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pLAN application program

pLAN

1/4 compressor modular Chiller-HP for ALCO Driver

Manual version: 1.2 - July 22, 2000

Program code: EPSTDEMCHC

Ref.: 110EM

Technical manual pCO pLAN compressor modular standard chiller

Release 1.2 July 22, 2000 page 2

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APPLICATIONS AND FUNCTIONS CARRIED OUT BY THE SYSTEM.............................................................................................................................................3

MASTER/SLAVE SYSTEM ARCHITECTURE...................................................................................................................................................................................4

FAST CONFIGURATION..................................................................................................................................................................................................................5

WHAT THE ALCO-DRIVER MODULAR CHILLER IS ................................................................................................................................................................................5 STEP 1 - PLAN CONFIGURATION......................................................................................................................................................................................................6 STEP 2 - MASK TREE (DRIVER MASK LOCALISATION) ...........................................................................................................................................................................7 STEP 3 - DEFAULT VALUE INSTALLATION...........................................................................................................................................................................................8 STEP 4 - DRIVER PARAMETER CONFIGURATION..................................................................................................................................................................................9 STEP 5 - INPUT/OUTPUT DRIVER MASKS.......................................................................................................................................................................................... 12 STEP 6 – SYSTEM STARTING ......................................................................................................................................................................................................... 13 STEP 7 – TYPICAL PROBLEMS WHEN STARTING THE SYSTEM ............................................................................................................................................................ 13

INPUT/OUTPUT LIST..................................................................................................................................................................................................................... 15

AIR/WATER UNIT WITH MAX. 8 SEMIHERMETIC COMPRESSORS (1 COMPRESSOR CAPACITY CONTROLLER) ........................................................................................... 15 AIR/WATER UNIT WITH MAX. 8 SEMIHERMETIC COMPRESSORS (UP TO 3 CAP. CONTROLS PER COMP.) ................................................................................................. 16 AIR/WATER UNIT WITH MAX. 8 SEMIHERMETIC COMPRESSORS (UP TO 3 CAP. CONTROLS PER COMP.) ................................................................................................. 17

REGULATION................................................................................................................................................................................................................................ 18

INPUT TEMPERATURE REGULATION................................................................................................................................................................................................. 18 OUTPUT TEMPERATURE REGULATION ............................................................................................................................................................................................. 18 COMPRESSOR ROTATION.............................................................................................................................................................................................................. 19 VALVE PRE-POSITIONING MANAGEMENT .......................................................................................................................................................................................... 20 CONDENSATION REGULATION ........................................................................................................................................................................................................ 21 DEFROSTING REGULATION FOR WATER/AIR MACHINES...................................................................................................................................................................... 22 RECOVERY UNIT REGULATION........................................................................................................................................................................................................ 24 FREECOOLING REGULATION UNIT ................................................................................................................................................................................................... 25

Freecooling regulation with inverter fan management ............................................................................................................................................................. 25 ANTIFREEZE REGULATION ............................................................................................................................................................................................................. 26

ALARMS........................................................................................................................................................................................................................................ 27

GENERAL DESCRIPTION ................................................................................................................................................................................................................ 27 ALARM HISTORICAL ...................................................................................................................................................................................................................... 27 ALARM TABLE .............................................................................................................................................................................................................................. 28 DRIVER ALARMS.............................................................................................................................................................................................................................1

PLAN NETWORK........................................................................................................................................................................................................................... 30

I/O card address.................................................................................................................................................................................................................... 30 Terminal address................................................................................................................................................................................................................... 31

TERMINAL MANAGEMENT............................................................................................................................................................................................................... 31 Terminal configuration procedure ........................................................................................................................................................................................... 32 Display of the terminal connection state ................................................................................................................................................................................. 33

DRIVER SOFTWARE CONFIGURATION ....................................................................................................................................................................................... 34

Configuration branches.......................................................................................................................................................................................................... 34 USER INTERFACE (DRIVER) ........................................................................................................................................................................................................... 34

Password masks ................................................................................................................................................................................................................... 34 Manufacturer parameters....................................................................................................................................................................................................... 35 CAREL parameters ............................................................................................................................................................................................................... 36 Maintenance parameter ......................................................................................................................................................................................................... 36 Special function: “Go Ahead” ................................................................................................................................................................................................. 37 Valve operation according to the “Chiller” and “Head pump” modes ........................................................................................................................................ 37

DRIVER REGULATION.................................................................................................................................................................................................................... 38 “Capacity” parameter request management............................................................................................................................................................................ 38 Regulation algorithm.............................................................................................................................................................................................................. 38

SUPERVISORY SYSTEM................................................................................................................................................................................................................. 39 KEYPAD...................................................................................................................................................................................................................................... 43

LIST OF MASKS............................................................................................................................................................................................................................ 45



$SSOLFDWLRQV DQG IXQFWLRQV FDUULHG RXW E\ WKH V\VWHP Type of controlled units air / water only chiller air / water chiller + freecooling air / water total recovery air / water chiller + heat pump Compressor maximum number Max. 1 compressor with max. 3 pCO card capacity controls Max. 2 compressors with max. 1 pCO card capacity control Compressor type Semihermetic compressors with 1 capacity control Semihermetic compressors with 3 capacity controls Compressor call rotation Rotation of all the compressors with FIFO logic Electronic expansion valve management (EXV) Management of the EX7 and EX8 Alco valve. Defrosting type Global defrosting of all the pCO units connected to the network: Independent/simultaneous/separated. Local defrosting of the single pCO unit: separated/ simultaneous Security for each refrigeration circuit High pressure (pressure controller) Low pressure (pressure controller) Oil differential pressure controller Compressor thermal Condensation fan thermal System security A serious alarm input (stops the whole unit) , available both in the MASTER and SLAVE unit from the 2.002 version A flow controller input (stops the whole unit) , available both in the MASTER and SLAVE unit from the 2.002 version A pump thermal input (stops the whole unit) Remote on/off input without alarm signalling Regulation type Proportional or proportional + integral regulation on the evaporator input probe. Neutral band regulation on the evaporator output probe (compressor insertion according to a band and a time) Condensation The condensation can be carried out according to temperature or pressure The fans can be managed according to ON/OFF mode Or with a 0/10 V modulating signal Accessories Supervision with RS422/RS485 serial card. Alarm historical with clock card. EVD driver for the EXV valve driving. EVD driver backup EVBAT battery module.



0DVWHU�VODYH V\VWHP DUFKLWHFWXUH The system is composed of two pCOs connected to the local network of which the first acts as master and the second acts as slave. Master function Temperature regulation All compressor call Manages the system alarms Management of max 2 refrigeration circuits (start, stop, alarms, EXV) Communication possibility with an external supervisor Slave function Management of max 2 refrigeration circuits (start, stop, alarms, EXV) for each card Common functions Both master and slave manage (configuration and regulation) max 2 EVD drivers and consequently max 2 EXV valve each. Regulation probe The thermoregulation probe will have to connected only to the master pCO. Each pCO card, driver card and terminal are identified with an address. The terminal address is selected via the dip-switches situated on the back of the terminals themselves whereas the address in he I/O cards is always selected via dipswitches placed on a card with PCOADR0000 code (without clock option) or PCOCLKMEM0 (with clock option); this card has to be inserted in the clock plug-in connector. The address dip-switches of the EVD driver are on the back of the front-cover (removable) of the driver itself. The master pCO must have address 1 The pCO slave must have address 2 The driver 1 must have address 3 The driver 2 must have address 4 The driver 3 must have address 5 The driver 4 must have address 6 The local terminal must have address 8 Note : when the unit is ON, all the pCO cards and the drivers must be ON (LED On/Off on the terminal ON for all the units).

• The master unit starts/stops all the units • The slave unit starts/stops itself only. If the slave unit is OFF and master is ON, the slave does not starts. If the slave is ON and t

master is OFF, the slave does not start. • The drivers have no start enabling (are always ON : this does not mean that the driver begins immediately to control because, as

long as the pCO units do not cause at least one compressor to start, the driver continues to receive a 0% request and consequently the valve is kept closed).

Thermoregulation of the whole system

Driver 4

Driver 3

Driver 2

Driver 1

pCO 2 (Slave)

Terminal LCD (4x20)

pCO 1

(Master)

EXV 4 EXV 3 EXV 2 EXV 1



)DVW FRQILJXUDWLRQThis chapter is about the hardware and software minimum configuration to be carried out in order to start the installation. It is recommended to read carefully this chapter because it explains (in short) the main software and hardware characteristics. For further detailed information on the topics discussed in this chapter (prepositioning, pLAN, etc...) refer to the relevant chapters (see summary).

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This software permits the management of different chiller types of and of the ALCO driver for ALCO solenoid valve. This software manages 6 different machine types: • machine type 0 Æ CHILLER air/water, max. 4 semihermetic compressors, max 1 capacity control per compressor • machine type 1 Æ CHILLER with air/water FREECOOLING, max 4 with air/water, max 1 capacity control per compressor • machine type 2 Æ CHILLER air/water, max 2 semihermetic compressors, max 3 capacity controls per compressor • machine type 3 Æ CHILLER with air/water FREECOOLING, max 2 semihermetic compressors, max 3 capacity controls per compressor • machine type 4 Æ CHILLER / HEAT PUMP with air/water, max 2 semihermetic compressors, max 3 capacity controls per compressor • machine type 5 Æ CHILLER / HEAT PUMP with air/water TOTAL RECOVERY, max 2 semihermetic compressors, max 3 capacity controls per

compressor The integration of the ALCO driver consists of: • the opportunity to set all the operation parameters of the drivers present • the opportunity to carry out the prepositioning of the valve connected to each driver according to number of compressors ON and the number of

the capacity controls • the opportunity to monitor all the alarms coming from the driver cards (that can be configured in order to switch off, possibly, the compressors

of the relevant circuit) and all the readings of the probes connected to the drivers

CAUTION ! Any reference to pCO1 and pCO2 in this manual must be understood as pCO card with pLAN address equal to 1 (pCO MASTER card) and pCO card with pLAN address equal to 2 ( pCO SLAVE card).



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De-energise both the pCO cards and the driver cards if powered. After you have carried out the electrical connections between the pCO cards (see the CAREL pCO installation manual) and between the pCO cards and the drivers (see the CAREL instruction sheet enclosed in the driver card) it is necessary to configure the pLAN network. To do this, you have to set the dip-switches of the pCO addressing cards (card placed at the centre of the pCO card, perpendicular to the last one), the dip-switches placed on the back of the terminal/s and the dip-switches present below the driver protection plastic (the block where the LEDs indicating the valve opening/closure, pLAN, etc.. are located). The removal is not difficult : simply exert a gentle pressure at the sides with your fingers. The maximum configuration includes 2 pCO cards, 4 drivers and 4 terminals ; the addresses to be assigned are as follows : pCO1 Æaddress 1 pCO2 Æ address 2 Driver 1 Æ address 3 Driver 2 Æ address 4 Driver 3 Æ address 5 Driver 4 Æ address 6 Terminal LCD 1 Æ address 7 (shared, both pCO1 and pCO2) Terminal LCD 2 Æ address 8 (shared, both pCO1 and pCO2) Terminal LCD 3 Æ address 9 (private, only pCO1) Terminal LCD 4 Æ address 10 (private, only pCO2) Whatever the number and configuration of terminals being utilised, they can be connected indifferently to the pCO 1 card or to the pCO 2 card (they are anyway present in the pLAN network) max 3 in number for each pCO card. NB : the terminals can not be connected to the driver cards since they do not manage any typo of terminal. The dip-switch configuration provides each terminal with an address so as it can be identified by the pLAN network. The address, furthermore, establishes the terminal sharing type (private or shared) as shown in the list above. Example 1 : with dip-switch=8, the terminal is considered to be shared between the two cards. In this mode it is possible to utilise the terminal to access the masks of both the pCO cards (via the “INFO” button of the terminal itself). Example 2 : with dip-switch=9, the terminal is considered to be private of the pCO1 card. It is namely possible to access only the masks of the pCO1 card.

Address 1

Address 2

Address 3 Address 4

pCO1 pCO2

Driver 1 Driver 2

Address 5 Address 6

Driver 3 Driver 4

Address 7

LCD Terminal 1

Address 8

LCD Terminal 2

Address 9

LCD Terminal 3

Address 10

LCD Terminal 4



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The following diagram illustrates the configuration branch structure and the driver mask position. The diagram shows the structure with one driver : in the case of two drivers, the driver masks should be simply duplicated.

CAUTION ! for completeness, also the “ Carel branch” has been reported DO NOT MODIFY ANY PARAMETER INSIDE THE CAREL BRANCH WITHOUT PRECISE

INDICATIONS FROM CAREL OR ALCO This diagram is simply a “map” to better take one’s bearings among the configuration and display branches where driver parameters are present.

menu prog+

Manufacturer Branch/Carel

Maintenance branch

I/O

Input/Output branch Hint : by pressing the “MENU” button inside a driver configuration branch (“manufacturer branch”, “maintenance branch”, “carel branch”) you return to the password mask that permits the access to the branch itself. Hint : always refer to this section to better understand where you are and where are the configuration/display parameters which will be examined later on.

Enabl./ Driver alarm delays

Password for Manufact. branch

Manufact. branch

Password for Maintenancebranch

Maintenance branch

I/O driver-parameter resumptivemasks

Password for Carel branch Carel branch

Æ chiller loop mask

Æ driver loop mask



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After you have verified the connections between the various cards and terminals, energise the pCO card/s. At the machine start, the software installs automatically the default values chosen by CAREL for all the chiller and driver configuration parameters. This section explains how to reset the default values to return to the initial conditions. At the first start it is not consequently necessary to execute this operation : jump therefore directly to the “step 4”. The following procedure is used for resetting all the configuration parameters to the manufacturer values chosen by CAREL. CAUTION ! this procedure deletes, irreversibly, the possible programming carried out by the user. Since the default value reset of an operation concerns each pCO card, in the case of two cards, it must be repeated for the second one. The procedure is identical for both cards. The necessary steps as follows : • press the ”menu” and “prog” buttons of the LCD terminal simultaneously (once pressed, both the LED placed above the “menu” button and the

one placed above the “prog” button must light up). • Insert the password by utilising the “arrow” buttons and press enter : in this way you enter the “manufacturer” configuration branch: M_Pw_Manuf +--------------------+ ¦Manufacturer ¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+ • Press four times the arrow button up so as to reach immediately the default installation mask : m_manuf_300 +--------------------+ ¦Reset all parameters¦ ¦to default values N¦ ¦ ¦ ¦ ¦ +--------------------+ • Press the “enter” button in such a way as to position the cursor above the letter “N” and using the arrow buttons move it to “S” ; immediately the

writing “please wait...” appears ; after a few seconds it disappears : at this point the defaults have been completely installed.



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IMPORTANT !

Before going on with the ENERGISE AND DEENERGISE the pCO card configuration. This section is not intended to explain the meaning of all the driver parameter meaning, but only the fundamental and more interesting ones for the for the driver setting up. For further and more detailed information, see the chapter “ driver software configuration ”. Each pCO card manages max. two drivers. Since both have the same configuration, this section will illustrate only one. • press the menu button to go to the main mask • press the “INFO” button so as to reach the pCO unit to be configured : the writing “U :01” below left indicates that you are in the pCO 1 unit,

whereas the writing “U :02” indicates that you are in the pCO 2 unit M_MainMask +--------------------+ ¦13:10 05/11/00¦ ¦Inlet Water 14.1°C ¦ ¦Outlet Water 13.9°C ¦ ¦U:01 OFF FROM KEYB. ¦ +--------------------+

• once you have selected the pCO unit to be configured, press the “menu” and “prog” buttons simultaneously (as seen previously) and insert the

password • Scroll the masks by using the “down arrow’” button until you reach the first configuration mask relevant to the driver : m_manuf_50 +--------------------+ ¦General pLAN config ¦ ¦ ¦ ¦Local drivers 1¦ ¦ ¦ +--------------------+ In this mask, the number of drivers connected to the pCO card being configured is set up. • Scroll the masks using the “down arrow’” button until the driver alarm configuration masks are reached : m_manuf_244_D1 +--------------------+ ¦Driver 1 Alarms ¦ ¦Delay on ¦ ¦High pressure 0000s¦ ¦Super-heat 0000s¦ +--------------------+ m_manuf_244A_D1 +--------------------+ ¦Driver 1 Alarms ¦ ¦Switch off Drv1 comp¦ ¦if probe error ¦ ¦Delay ----sec¦ +--------------------+ m_manuf_244C_D1 +--------------------+ ¦Driver 1 Alarms ¦ ¦Switch off Drv1 comp¦ ¦if eeprom error ¦ ¦Delay ----sec¦ +--------------------+ m_manuf_244D_D1 +--------------------+ ¦Driver 1 Alarms ¦ ¦Switch off Drv1 comp¦ ¦if battery error N¦ ¦Delay ----sec¦ +--------------------+



m_manuf_244E_D1 +--------------------+ ¦Driver 1 Alarms ¦ ¦Switch off Drv1 comp¦ ¦if low pressure N¦ ¦Delay ----sec¦ +--------------------+ In these masks it is possible to enable and delay the alarms coming from the driver that stop the compressors of the relevant circuit. As you can see from the mask text itself, the only two alarms that do not stop the compressor are “high pressure” and “super-heat”. The delay is particularly useful at the unit start because, initially, the system oscillate considerably for several seconds. It is therefore recommended to insert delays according to the machine adaptation rate so as to ignore(at the start) all the alarms that stop the compressors. (Going down with the “down arrow’” button, after the driver 1 masks those of the 2° driver appear if present). • Scroll the masks by utilising the “down arrow” button until you reach the driver configuration masks : There are two configuration masks : “manufacturer” and “Carel”. Both of them are accessed via password : m_manuf_PW_C1 +--------------------+ ¦Manufacturer D:1 U:1¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+

In this section we do not consider the “Carel” branch because it contains parameters that do not concern the programming. DO NOT MODIFIE ANY PARAMETER IN THE CAREL BRANCH IN THE ABSENCE OF PRECISE CAREL OR ALCO INDICATIONS

Before inserting the password, check that the “U : u” and “D : d” texts indicate the correct pCO card and driver (that are namely those to be configured). U : u Æ “U” is (pCO), whereas “u” may be “1” or “2”, that is pCO 1 card and pCO 2 card respectively. D : d Æ “D” is per Driver, whereas “d” may be “1”, “2”, “3” or “4”, that is driver 1, 2, 3 and 4 respectively. For example : if the mask shows the indication “U : 2 D : 3”, you are entering the configuration branch of the pCO 2 card driver 1 ; since it is possible to connect up to four drivers (two for pCO card); those connected to the pCO 1 card are considered no.1 and no.2 drivers, whereas those connected to the pCO 2 card are considered no.3 and no.4 drivers. This type of indication is found in all the driver configuration and display masks : in this way it is possible to know rapidly which one is the driver and which pCO unit it is connected to. Once inserted the password, you enter the “manufacturer” configuration branch : m_Manuf_C1 +--------------------+ |Manufacturer D:1 U:1| |Regulation mode | |REGULATION OFF | |Present Stages 004| +--------------------+

In this first mask, the type of regulation and the number of stages present are set. Initially “ regulation type ” is “NONE (OFF)”, i.e. “OFF” valve (the valve is kept closed in any case). The other available modes are: “SELF-ADAPTIVE”, “TO BE CONFIG.USER” and “FORCED OPENING” described in detail below. Set the type of regulation in “SELF-ADAPTATIVE”. The number of stages present, on the contrary, depends on the chiller configuration: by “stages” we mean the number of steps (to be intended as number of compressors + (number of capacity controls per compressor)*number of compressors) of the circuit where the valve is positioned. Example : if you connect a driver to the pCO card no.1, chiller configured as “ machine type ” no. 2 with 1 compressor and 3 capacity controls, the number of stages being present will be : 1 compressor + (3 capacity controls) * 1 compressor = 1 + 3 = 4 stages m_Manuf_C1_10 +--------------------+ |Manufacturer D:1 U:1| |Gas type R22 | |Used valve type | |EX-7 OR LOWER CAP. | +--------------------+



The successive mask enables you to select the type of gas being utilised the unit and the valve model (EX-6/7/8). NB : “LOWER CAP.” simply indicates that the regulation can be carried out on the selected valve or on one with lower capacity (this allows you to configure future valves different from those supported at present (that is Ex6, Ex7 and Ex8)). Therefore, set the parameter at : “EX-6 or lower cap.” Æ if you possess an EX-6 valve “EX-7 or lower cap.” Æ if you possess an EX-7 valve “EX-8 or lower cap.” Æ if you possess an EX-8 valve m_Manuf_C1_15 +--------------------+ |Manufacturer D:1 U:1| |Comp.capacity 0330KW| |Super-Heat | |Setpoint 06.0°K| +--------------------+ This mask allows you to set the refrigerating capacity of the circuit compressor where the valve is positioned. For example, by selecting the Ex7 valve, the software recommends a 330KW compressor. Leave the superheat setpoint at the default value. Usually this value is right for all the systems : how and why to change it will be discussed below. Skip the successive masks up to the following one : m_Manuf_C1_100 +--------------------+ |Manufacturer D:1 U:1| |Pressure probe conf.| |4mA -00.8barg| |20mA 07.0barg| +--------------------+ If the default values do not correspond with those of the pressure probe being utilised, modify them by setting the values supplied by the manufacturer. Skip the successive masks until you reach the following one : m_Manuf_C1_180 +--------------------+ |Manufacturer D:3 U: | |Press.probe 4-20mA | |Temp.probe type | |NTC 103-AT (CAREL) | +--------------------+ If the default values do not agree with those of the pressure and temperature probe being utilised, modify them by setting the values supplied by the manufacturer. The basic driver configuration has come to an end. For further information and explanations on the parameters not being discussed inn this section, refer to the chapter “ driver software configuration”.



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Before starting the system, it is recommended to know the position of a handy mask displaying the fundamental information coming from the driver which allows you to know in real time : • the valve position (expressed in “steps”) • la super-heat temperature (calculated by the driver) • the suction temperature (temperature probe) • the suction pressure (pressure probe) m_InOut60 +--------------------+ |D1 valve Pos. 0000 | |Super-heat 00.0°C| |Suction temp. 00.0°C| |Suct.press. 00.0barg| +--------------------+ If you utilise two drivers, pay attention to the indication “D1” or “D2” present above left that indicates respectively the “driver1” or the “driver2”. If you utilise the battery module, it is possible to check the operation state by entering the maintenance branch: press the “MANUT” button (see “keyboard” chapter for further information) and, scrolling the masks, the following one is reached : m_Maint18 +--------------------+ |Maintenance D:1 U:1| | | |Battery state | |DISCONNECTED | +--------------------+

At the first start, the battery will probably turn out to be DISCHARGED because it takes several hours for recharge (about 48 hours for the first recharge; for further information, see the instruction sheet enclosed in the battery form). The possible states are: • DISCONNECTED • HIGH INT. RESISTANCE • NOT RECHARGEABLE • DOWN • FUNCTIONING See the chapter “ driver software configuration ” for a detailed explanation of the various states.



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IMPORTANT !

Before starting the system ENERGIZE AND DEENERGIZE the pCO cards. After you have energised the pCO cards, wait until the writing “please wait ...” disappears, then press the “ON-OFF” button. The green LED of the button will lighten after a few seconds. CAUTION ! If two pCO cards are being utilised, you have to press the ON-OFF button also in the second card : then move to the second unit’ by pressing the “INFO” button and press the ON-OFF button. The complete start of the machine is obtained when the green LED of the ON-OFF button is ON both in the pCO 1 unit and in the pCO 2 unit and when the pCO units report the writing “U :01 ON” and “U :02 ON” respectively for the pCO 1 and 2 units.

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Problem : The alarm red LED is ON and the power green LED blinks. Make sure that the driver power is supplied properly as indicated in the instruction sheet enclosed in the driver card. Check that the battery module (if utilised) is connected correctly. Problem : the “pLAN” green LED blinks. Make sure that the pLAN connection is carried out as indicated in the instruction sheet enclosed in the driver card. Make sure that the ili “RxTx+” and “RxTx-“ wires are not reversed. Make sure that dip-switches of the pCO cards, of the Driver cards and of the LCD terminals have been set up as explained in the “Step 1 - pLAN configuration “. Energise and de-energise first the drivers and then the pCO cards (even if the dip-switch selections have not been changed). Problem : the pCO shows alarms that can not be deleted or the driver signals alarms whereas the pCO signals no alarms At the first start, alarms of the type “I wait for valve reopening”, “I wait for battery recharge”, etc.. will be surely signalled; these signals are not real alarms, but “warnings”, that is signals indicating possible anomaly presence. Actually, it is not a matter of anomalies, but of situations that occurs because the battery is down. To ignore these signals, simply enter the “maintenance” branch by pressing the “MANUT” button. First move to the mask m_Maint_C1_PW +--------------------+ |Maintenance D:1 U:1| |Insert password | | | | 0000 | +--------------------+

then insert the password, and finally enter the driver “maintenance” branch. Scroll the masks up to the following one : m_Maint_C1_90 +--------------------+ |WARNING! U:1 D:1 | |System waiting for | |VALVE REOPENING | |Ignore? N | +--------------------+

Besides “valve reopening”, the mask can signal that the system is waiting for “ eeprom restart ” or “ battery recharge ” (for further information see the paragraph “ special function ignore”). Move with the cursor in the field “N”, set it at “S” and confirm by pressing enter. After a few seconds the mask ought to change to : m_Maint_C1_80 +--------------------+ |Maintenance U:1 D:1 | | | |NO PROBLEM | | | +--------------------+

If none of the signals (“eeprom restart ”, “ battery recharge ”, etc...) appears, this mask is immediately displayed (obviously, since there is no alarm to be ignored).



Press the “alarm” button repeatedly to see if alarms have been left in queue. To scroll the alarms, use the arrow buttons. Problem : the valve does not open Ensure that other problems discussed in this chapter are absent: in that case solve such problems before going on with reading. There are typical cases that prevent valve opening : • the pCO cards have not been set at “ON” • the valve regulation has not been set at “self-adaptive” • check type of gas, valve, compressor capacity (KW) and mainly the number of “stages present” (all these parameters are in the driver

“manufacturer” branch) • super-heat alarm • broken probe alarm • high pressure alarm Caution ! The alarm masks show above right the indication of the driver that has generated the alarm and of the pCO unit to which it is connected. Afterwards check the driver and the card involved in the alarm. If you do not succeed in starting the unit due to the high/low pressure alarms and/or super-heat, insert some compressor-stop delays in the dedicated masks (see “Step 3 - driver parameter configuration ”). Furthermore, verify with an instrument that the temperature measurement (it is used to calculate the super-heat) corresponds to the one being measured by the driver temperature probe. Check that the super-heat is at 0°K when the unit is OFF and at ambient temperature. In the driver “manufacturer” branch it is moreover possible to increase (also at 10-15°K) the super-heat required in the mask : +--------------------+ |Manufacturer D:1 U:1| |Comp.capacity 0330KW| |Super-Heat | |Setpoint 03.0°K| +--------------------+

in this way the system becomes less sensitive and so is more stable at the inevitable start oscillations. Furthermore, it is possible to extend the working range of the “ operating pressure ” by increasing the max. value and reducing the minimo value of the operative pressure in the following mask : m_Manuf_C1_70 +--------------------+ |Manufacturer D:1 U:1| |Operating pressure | |Min. Set 02.0barg| |Max. Set 08.5barg| +--------------------+

also in this way the stability of the system is improved.



,QSXW�RXWSXW OLVWBelow the inputs and outputs are listed as a function of the unit type; a number has been associated to each type of machine. This number is the principal parameter of the program as it identifies the input and output configuration. In this way the configuration of the machine is made very easy because you need only choose the requested input and output list and select the associated number in the program configuration masks. Each of the following pages contains 2 unit types and for each unit the pCO inputs/outputs from master and the inputs/outputs of one of the slave pCOs are described.

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Digital inputs

Only Chiller unit MACHINE TYPE “0” Chiller unit with Freecooling MACHINE TYPE “1” n Master Slave no. 1-3 Master Slave no. 1-3 1 Serious alarm Serious alarm (enabling) Serious alarm Serious alarm (enabling) 2 Evaporator flow controller Evaporator flow controller (enabling) Evaporator flow controller Evaporator flow controller (enabling) 3 Remote On/Off Remote On/Off 4 Pump thermal Pump thermal 5 Low pressure pressurestat 1 Low pressure pressurestat 3 Low pressure pressurestat 1 Low pressure pressurestat 3 6 Oil differential 1 Oil differential 3 Oil differential 1 Oil differential 3 7 Fan thermal 1 Fan thermal 3 Fan thermal 1 Fan thermal 3 8 Low pressure pressurestat 2 Low pressure pressurestat 4 Low pressure pressurestat 2 Low pressure pressurestat 4 9 Oil differential 2 Oil differential 4 Oil differential 2 Oil differential 4 10 Fan thermal 2 Fan thermal 4 Fan thermal 2 Fan thermal 4 11 High pressure pressurestat 1 /

Comp.thermal 1 High pressure pressurestat 3 / Comp.thermal 3

High pressure pressurestat 1 / Comp.thermal 1

High pressure pressurestat 3 / Comp. thermal 3

12 High pressure pressurestat 2 / Comp.thermal 2




Analog inputs

Only Chiller unit Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Entering water temp. Entering water temp. 2 Leaving water temp. 1 Leaving water temp. 2 Leaving water temp. 1 Leaving water temp. 2 3 Circuit 1 condens. temp. Circuit 3 condens. temp. Circuit 1 condens. temp. Circuit 3 condens. temp. 4 Circuit 2 condens. temp. Circuit 4 condens. temp. Circuit 2 condens. temp. Circuit 4 condens. temp. 5 External Set-Point External temperature 6 Freecooling temperature 7 Circuit 1 high pressure transducers Circuit 3 high pressure transducers Circuit 1 high pressure transducers Circuit 3 high pressure transducers 8 Circuit 2 high pressure transducers Circuit 4 high pressure transducers Circuit 2 high pressure transducers Circuit 4 high pressure transducers Digital outputs

Only Chiller unit Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Circulation pump Circulation pump 2 Comp.1 winding A Comp. 3 winding A Comp.1 winding A Comp. 3 winding A 3 Comp.1 winding B Comp. 3 winding B Comp.1 winding B Comp.3 winding B 4 Circuit 1 liquid solenoid Circuit 3 liquid solenoid Circuit 1 liquid solenoid Circuit 3 liquid solenoid 5 Comp. 1 capacity control Comp. 3 capacity control Comp. 1 capacity control Comp. 3 capacity control 6 Comp. 2 winding A Comp. 4 winding A Comp. 2 winding A Comp. 4 winding A 7 Comp. 2 winding B Comp. 4 winding B Comp. 2 winding B Comp. 4 winding B 8 Circuit 2 liquid solenoid Circuit 4 liquid solenoid Circuit 2 liquid solenoid Circuit 4 liquid solenoid 9 Comp. 2 capacity control Comp. 4 capacity control Comp. 2 capacity control Comp. 4 capacity control 10 Antifreeze heater 1 Antifreeze heater 2 Circuit 2 condens. Fan Antifreeze heater 2 11 General alarm cumulat. General alarm cumulat. General alarm cumulat. General alarm cumulat. 12 Circuit 1 condens. fan Circuit 3 condens. fan Circuit 1 condens. Fan Circuit 3 condens. fan 13 Circuit 2 condens. fan Circuit 4 condens. fan Freecooling On/Off Circuit 4 condens. fan Analog outputs

Only Chiller unit Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Condens. 1 fan-speed reg. Condens. 3 fan-speed reg. Condens. 1 fan-speed reg. Condens. 3 fan-speed reg. 2 Condens. 2 fan-speed reg Condens. 4 fan-speed reg Freecooling modulating valve Condens. 4 fan-speed reg



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Digital inputs

Only Chiller unit MACHINE TYPE “2” Chiller unit with Freecooling MACHINE TYPE“3” n Master Slave no. 1-3 Master Slave no. 1-3 1 Serious alarm Serious alarm (enabling) Serious alarm Serious alarm (enabling) 2 Evaporator flow controller Evaporator flow controller (enabling) Evaporator flow controller Evaporator flow controller (enabling) 3 Remote On/off Remote On/off 4 Pump thermal Pump thermal 5 Low pressure pressurestat 1 Low pressure pressurestat 2 Low pressure pressurestat 1 Low pressure pressurestat 2 6 Oil differential 1 Oil differential 2 Oil differential 1 Oil differential 2 7 Circuit 1 fan thermal 1 Circuit 2 fan thermal 1 Circuit 1 fan thermal 1 Circuit 2 fan thermal 1 8 Circuit 1 fan thermal 2 Circuit 2 fan thermal 2 Circuit 1 fan thermal 2 Circuit 2 fan thermal 2 9 Circuit 1 fan thermal 3 Circuit 2 fan thermal 3 Circuit 1 fan thermal 3 Circuit 2 fan thermal 3 10 11 High pressure pressurestat 1 High pressure pressurestat 2 High pressure pressurestat 1 High pressure pressurestat 2 12 Comp. 1 thermal Comp. 3 thermal Comp.1 thermal Comp. 3 thermal Analog inputs

Only Chiller unit Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Entering water temp. Entering water temp. 2 Leaving water temp.1 Leaving water temp.2. Leaving water temp.1. Leaving water temp.2 3 Circuit 1 condens. temp. Circuit 2 condens. temp Circuit 1 condens. temp Circuit 2 condens. temp 4 External temperature 5 External Set-Point External Set-Point 6 Freecooling temperature 7 Circuit 1 high pressure transducers Circuit 2 high pressure transducers Circuit 1 high pressure transducers Circuit 2 high pressure transducers 8 Digital output

OnlyChiller unit Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Circulation pump . Circulation Pump 2 Comp. 1 winding A Comp. 2 winding A Comp. 1 winding A Comp. 2 winding A 3 Comp. 1 winding B Comp. 2 winding B Comp. 1 winding B Comp. 2 winding B 4 Circuit 1 liquid solenoid Circuit 2 liquid solenoid Circuit 1 liquid solenoid Circuit 2 liquid solenoid 5 Circ. 1 condens. fan 3 Circ. 2 condens. fan 3 Circ. 1 condens. fan 3 Circ. 2 condens. fan 3 6 Comp. 1 capacity control 1 Comp. 2 capacity control 1 Comp. 1 capacity control 1 Comp. 2 capacity control 1 7 Comp. 1 capacity control 2 Comp. 2 capacity control 2 Comp. 1 capacity control 2 Comp. 2 capacity control 2 8 Comp. 1 capacity control 3 Comp. 2 capacity control 3 Comp. 1 capacity control 3 Comp. 2 capacity control 3 9 Circuit 1 condens. fan 2 Circuit 2 condens. fan 2 Circuit 1 condens. fan 2 Circuit 2 condens. fan 2 10 Antifreeze heater 1 Antifreeze heater 2 Antifreeze heater 1 Antifreeze heater 2 11 General alarm cumulat. General alarm cumulat. General alarm cumulat. General alarm cumulat. 12 Circ.1 condens. fan 1 Circ 2 condens. fan 1 Circ.1 condens. Fan 1 Circ.2 condens. fan 1 13 Freecooling On/Off Analog outputs

Only Chiller units Chiller unit with Freecooling n Master Slave no. 1-3 Master Slave no. 1-3 1 Condens.1 fan speed reg. Condens.2 fan speed reg. Condens.1 fan speed reg. Condens.2 fan speed reg. 2 Freecooling modulating valve



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Digital inputs

Chiller unit with heat pump MACHINE TYPE “4” Chiller unit with total recovery heat pump MACHINE TYPE “5” n Master Slave no. 1-3 Master Slave no. 1-3 1 Serious alarm Serious alarm (enabling) Serious alarm Serious alarm (enabling) 2 Evaporator flow controller Evaporator flow controller (enabling) Evaporator flow controller Evaporator flow controller (enabling) 3 Remote On/Off Remote On/Off 4 Summer/winter switch Summer/winter switch 5 Low pressure pressurestat 1 Low pressure pressurestat 2 Low pressure pressurestat 1 Low pressure pressurestat 2 6 Oil differential 1 Oil differential 2 Oil differential 1 Oil differential 2 7 Circuit 1 fan 1 thermal Circuit 2 fan 1 thermal Circuit 1 fan 1 thermal Circuit 2 fan 1 thermal 8 Circuit 1 fan 2 thermal Circuit 2 fan 2 thermal Circuit 1 fan 2 thermal Circuit 2 fan 2 thermal 9 Circuit 1 fan 3 thermal Circuit 2 fan 3 thermal Circuit 1 fan 3 thermal Circuit 2 fan 3 thermal 10 Pump thermal Pump thermal 11 High pressure pressurestat 1 High pressure pressurestat 2 High pressure pressurestat 1 High pressure pressurestat 2 12 Comp. 1 thermal Comp. 2 thermal Comp. 1 thermal Comp. 2 thermal Analog inputs

Chiller unit with heat pump Chiller unit with total recovery heat pump n Master Slave no. 1-3 Master Slave no. 1-3 1 Entering water temp. Entering water temp. 2 Leaving water temp. 1 Leaving water temp. 2 Leaving water temp. 1 Leaving water temp. 2 3 Circ. 1 condens. temp. Circ. 2 condens. temp. Circ. 1 condens. temp. Circ. 2 condens. temp. 4 Input recovery boiler temp. 5 External Set-Point External Set-Point 6 Output recovery boiler temp. 7 Circuit 1 high pressure transducers Circuit 2 high pressure transducers Circuit 1 high pressure transducers Circuit 2 high pressure transducers 8 Digital outputs

Chiller unit with heat pump Chiller unit with total recovery heat pump n Master Slave no. 1-3 Master Slave no. 1-3 1 Circulation pump Circulation pump 2 Comp.1 winding A Comp. 2 winding A Comp.1 winding A Comp. 2 winding A 3 Comp.1 winding B Comp. 2 winding B Comp.1 winding B Comp. 2 winding B 4 Circuit 1 liquid solenoid Circuit. 2 liquid solenoid Circuit 1 liquid solenoid Circuit 2 liquid solenoid 5 Circuit 1 4-way valve Circuit 2 4-way valve Valve A 6 comp.1 cap. control 1 comp.2 cap. control 1 comp.1 cap. control 1 comp. 2 cap. control 1 7 comp.1 cap. control 2 comp.2 cap. control 2 comp.1 cap. control 2 comp. 2 cap. control 2 8 comp.1 cap. control 3 comp.2 cap. control 3 comp.1 cap. control 3 comp. 2 cap. control 3 9 Circ. 1 condens. fan 2 Circ. 2 condens. fan 2 Valve B 10 Antifreeze heater 1 Antifreeze heater 2 Antifreeze heater 1 Antifreeze heater 2 11 General alarm cumulat. General alarm cumulat. General alarm cumulat. General alarm cumulat. 12 Circ. 1 condens. fan 1 Circ. 2 condens. fan 1 Circ. 1 condens. fan 1 Circ. 2 condens. fan 1 13 Circ. 1 condens. fan 3 Circ. 2 condens. fan 3 Valve C Analog outputs

Chiller unit with heat pump Chiller unit with total recovery heat pump n Master Slave no. 1-3 Master Slave no. 1-3 1 Condens 1 fan speed reg. Condens 2 fan speed reg. Condens 1 fan speed reg. Condens 2 fan speed reg. 2



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Utilised inputs • Input temperature Utilised outputs • All the compressors and their capacity controls Utilised parameters • Regulation setpoint • Input regulation proportional band • Regulation type (proportional or proportional + integral) • Integration time (if the proportional + integral regulation is enabled) • Unit type • Total compressor number • Capacity control number Example : regulation diagram for machines equipped with max 2 semihermetic compressors possessing max three capacity controls All the network compressors will be proportionally positioned in the band .

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Utilised inputs • Output temperature Utilised outputs • All the compressors and the capacity controls Utilised parameters • Regulation Setpoint • Output regulation neutral band • Step activation time • Step deactivation time • Output temperature minimum limit (stops all the compressors independently of the deactivation time) • Output temperature maximum limit (stops all the compressors independently of the deactivation time)

setpoint

Regulation band

C1 P1 P2 P3 C2 P1 P2 P3

Temperatura (°C)

C1 Æ compressor 1 P1 Æ cap. control 1 P2 Æ cap. control 2 P3 Æ cap. control 3 C2 Æ compressor 2 P1 Æ cap. control 1 P2 Æ cap. control 2 P3 Æ cap. control 3



As long as temperature remains within the neutral zone, no compressor is activated or deactivated (output temperature included between the point A and the point B) Compressor activation request (output temperature exceeding the point B): As long as temperature exceeds the point B the compressors are activated with a delay between one activation and the other equivalent to the parameter “delay between neutral zone ON”. Deenergization of the energised devices : As long as the temperature is lower than point A the compressors are deenergized with a delay between one deenergization and the other equal to the “delay between neutral band stops” parameter. If temperature goes down below the minimum limit the compressors are stopped even in the absence of time fulfilment (this control is introduced to prevent the unit from entering the antifreeze alarm).

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The compressor-call rotation causes the hour number and the start-stop number of different compressors to be equivalent. Rotation is carried out according to a FIFO-type logic; this means that the first compressor to start will be the first to stop. As a consequence of this behaviour, remarkable differences could occur in the initial phase as regards the working hours of the various compressors, but at full working such differences will increasingly attenuate. The rotation only involves the compressors , not the capacity controls. Compressor rotation can be disabled using the appropriate parameter. Management without rotation: • Start: C1,C2,C3,C4,C5,C6,...,C16. • Stop : C16,C15,C14,C13,C12,C11,...,C1. Management with FIFO rotation (the first compressor to start will be the first to stop): • Start: C1,C2,C3,C4,C5,C6,....C16. • Stop: C1,C2,C3,C4,C5,.....C16.

Output temperature

Output temperature

Point B

Point A

Time

Time

Time

Time

P3-1

P3-2

P2-1

P3-1

P2-2 P1-2 P1-1

P1-2 P2-1 P1-1 P2-2

C2

C2

C1

Delay between differentON

OFF-delay at neutral zone

Off compressor minimum limit



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The EXV regulation algorithm bases itself on the pre-positioning of the valve according to the function of the active compressors. The value of the parameters to be set depends on the selected unit type. Only chiller unit • Unit compressor total number • pCO card (local) compressor number (N) • Compressor capacity control number (P) • pCO card stage number =N*P+N • Driver stage number =1/2*(N*P+N)

Example : Type of machine no. 0 : 4 circuit chiller unit, 4 compressors with 1 capacity control each. 2 pCO cards and 4 drivers (2 driver per pCO)are used. You must configure 4 total compressors, 2 local ones , 1 capacity control per compressor and 2 stages per driver. On the pCO : Compressor configuration m_manuf_00 +--------------------+ ¦Machine type no. 0¦ ¦Total comp. 4 ¦ = compressor total no. in the unit ¦Local comp. 2 ¦= N = no. of compressors per pCO card ¦Comp.cap.contr.per 1¦ = P = no. of stages per per pCO card +--------------------+ On the Driver #1 : driver 1 configuration m_Manuf_C1 +--------------------+ ¦Mnufacturer D:1 U:1¦ ¦Type of regulation ¦ ¦NONE (OFF) ¦ ¦Stages present 002¦ = (N*P+N) = no. of stages per driver +--------------------+

Similarly proceed as for the configuration of the driver #2 connected to the pCO 1 card and of the other two connected to the pCO 2 card. Supposing therefore the start of the first full-load compressor and of the capacity-controlled second compressor, 2 stages to the driver 1 and 1 stage to the driver 2 will be respectively forwarded.

Chiller unit + heat pump In the EX7 and EX8 valves the flow is unidirectional and so, in case of chiller+ heat pumps, 2 valves are required (and consequently 2 drivers) per circuit. In this case, the number of stages per driver is calculated differently. The system always consists of two driver cards per circuit and the same request is forwarded to both of them because the presence of two valves only serves for permitting the reverse of the cycle. Example: Type of machine no.1 : chiller + heat pump unit with 2 circuits, 4 compressors with 1 capacity control each. 2 pCO cards and 4 drivers (2

drivers per pCO card) are used. Consequently, 2 drivers per circuit are required. You must configure 4 total compressors, 2 local ones, 1 capacity control per compressor and 4 stages per driver.

On the pCO : Compressor configuration m_manuf_00 +--------------------+ ¦Machine type no. 0¦ ¦Total comp. 4¦ = total no. of compressors in the unit ¦Local comp. 2¦= N = no. of compressors per pCO card ¦Comp. cap. co. per 1¦ = P = no. of stages per per pCO card +--------------------+ On the Driver #1 : driver 1 configuration m_Manuf_C1 +--------------------+ ¦Manufacturer D:1 U:1¦ ¦Type of regulation ¦ ¦NONE (OFF) ¦ ¦Stages present 004¦ = (N*P+N) = no. of stages per driver +--------------------+

Similarly proceed as for the configuration of the driver #2 connected to the pCO 1 card and the other two connected to the pCO card 2. If the first full-load compressor and the second capacity-controlled one are started, the total number of “ON” stages is 3 (comp.1 + cap. contr.1 + comp.2). Both the drivers of the first circuit will receive a request equal to 3 stages and both of them will activate their respective valve (but obviously only one EXV of the two will act on the refrigerant lamination).



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Condensation can be carried out as follows: • on/off bound to the compressor working ( without the pressure transducers) • on/off or modulating bound to the reading of the presssure transducer (if the high-pressure transducers have been enabled) • on/off or modulating bound to the reading of the battery 1 and 2 temperature probes 1 e 2 (if the battery temperature probes have been

enabled) Utilised inputs: • high pressure probe C1 B7 • high pressure probe C2 B8 • battery temperature probe C1 B3 • battery temperature probe C2 B4 Utilised outputs: • Fan 1 • Fan 2 • Fan 3 • C1 AOUT1 fan speed regulation • C2 AOUT2 fan speed regulation Utilised parameters: • Condensation control selection: none/pressure/temperature • Type of condensation battery (Single / Separated) • Condensation Set-Point • Condensation Band • Number of fans per battery • Prevent function enabling • Prevent threshold • Prevent differential • Output voltage relevant to the inverter minimum speed • Output voltage relevant to the inverter maximum speed • Speed-up time inverter On/off condensation connected to the compressor working: With this type of condensation the fan working will be subordinated solely to the compressor working: Stopped compressor = stopped fan Started compressor = started fan On/off condensation connected to the temperature or pressure sensor: With this type of condensation the fan working will be subordinated solely to the compressor working and to the value read by the pressure or temperature sensors as a function of a set and of a band. When the pressure/temperature will be lower or equal to the set, all the fans will be stopped; when the pressure/temperature increases up to set + band, all the fans will be started. It will be possible to select condensation with single battery or with separated battery; with the single-battery condensation, the fans will be controlled by the higher pressure/temperature; with the separated -battery condensation, each sensor of pressure/temperature controls its own fan. Modulating condensation connected to the pressure or temperature sensor: With this type of condensation the fan control will be carried out through a 0/10 V analog output proportional to the request of the pressure/ temperature sensors. Also in this case it will be possible to select condensation with single battery or with separated batteries. Control will be identical with the above one. If the lower limit of the ramp is greater than 0V, we will not have a proportional straight line but, as in the first part of the graph, one step below the dif. Set-Point.

Setpoint high pressure batt. temperature

0 Volt

10 Volt

Prevent Threshold

Alarm band 1bar



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Utilised inputs: • battery 1 temperature (utilizable as pressure control) • battery 2 temperature (utilizable as pressure control)) • defrosting pressure control 1 input • defrosting pressure control 2 input Utilised parameters: • Inputs utilised for defrosting • Type of global defrosting (simultaneous / separated) • Type of local defrosting (simultaneous / separated) • set start defrosting • set stop defrosting • Defrosting delay time • Defrosting maximum time • compressor switch off time Utilised outputs: • Compressor 1 • Compressor 2 • Compressor 3 • Compressor 4 • Cycle 1 inversion electrovalve • Cycle 2 inversion electrovalve • Circuit no. 1 fan • Circuit no. 2 fan Defrosting type 1: global simultaneous/ local simultaneous It is sufficient that only one circuit claims to enter the defrosting cycle to force all circuits to defrosting; the circuits that do not require defrosting (temperature higher than defrosting set stop) stop and await; as soon as all circuits stop defrosting, the compressors can start again in heat pump functioning. Defrosting type 2: global separated / local simultaneous With this type of defrosting, a separate defrosting between the different pCO units and a simultaneous defrosting inside the same pCO unit takes place: The first pCO unit that claims defrosting enters defrosting (simultaneous inside the unit); the other units, even if they claim defrosting, they remain awaiting (they keep on operating in heat pump) until the first one stop defrosting; when the first one stops defrosting, the next one requiring defrosting enters it (simultaneous inside the unit) and the others await. Defrosting type 3: global separated / local separated With this defrosting type each refrigeration circuit enters defrosting separately; the first circuit requesting defrosting enters it, the other circuits , even though they claim defrosting, they stay awaiting until the first one stops defrosting; when they first one stops defrosting, the next one that requires defrosting enters it and the others await. +--------------------+ ¦Defrost config. ¦ ¦Probe TEMPERATURE ¦ ¦Global SIMULTANEOUS¦ ¦Local SIMULTANEOUS¦ +--------------------+



Defrosting of a circuit with time/temperature control: If the battery temperature/pressure remains below the defrosting set start for an overall time equal to a defrosting delay time, the circuit involved enters a defrosting cycle: • the refrigeration capacity of the system goes to the maximum • the refrigeration circuit refrigeration reverses through a 4-way valve • the involved fan stops (if the pressure probes are present, the fan will reach a certain threshold in order to prevent the circuit from entering high

pressure) The circuit leaves the temperature/pressure defrosting cycle (if the battery temperature exceeds the defrosting set stop) or maximum time defrosting cycle if the defrosting cycle exceeds the maximum time selected. Defrosting of a circuit with time/pressure control: the regulation is exactly the same , except for the fact that the pressure control state is calculated and not the temperature/pressure.

time t1 t2 t3 Defrosting cycle

temperature

set.start

set.stop



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Utilised inputs : • B1 evaporator entering water t. • B2 evaporator leaving water t. • Recovery entering water t. • Recovery leaving water t. Utilised outputs • A valve • B valve • C valve Utilised parameters • Recovery/use priority • Recovery Set-Point • Recovery band Recovery priority Summer operation: With use thermoregulator not fulfilled and recovery thermoregulator fulfilled, the machine will be working only chiller. The compressors are regulated by the evaporator water temperature. With use thermoregulator not fulfilled and recovery thermoregulator not fulfilled, the machine will be working chiller + recovery . The compressors are regulated by the recovery water temperature With use thermoregulator fulfilled and recovery thermoregulator not fulfilled, the machine will be working only recovery . The compressors are regulated by the recovery water temperature.. Winter working: With use thermoregulator not fulfilled and recovery thermoregulator fulfilled, the machine will be working heat pump. The compressors are regulated by the evaporator water temperature. With use thermoregulator not fulfilled and recovery thermoregulator not fulfilled, the machine will be working only recovery. The compressors are regulated by the recovery water temperature With use thermoregulator fulfilled and recovery thermoregulator not fulfilled, the machine will be working only recovery . The compressors are regulated by the recovery water temperature.. If the unit requests to carry out the defrosting, the machine is working defrosting Use priority: Summer operation: With use thermoregulator not fulfilled and recovery thermoregulator fulfilled, the machine will be working only chiller. The compressors are regulated by the evaporator water temperature. With use thermoregulator not fulfilled and recovery thermoregulator not fulfilled, the machine will be working chiller + reovery . The compressors are regulated by the evaporator water temperature. With use thermoregulator fulfilled and recovery thermoregulator not fulfilled, the machine will be working only recovery . The compressors are regulated by the recovery water temperature. Winter working: With use thermoregulator not fulfilled and recovery thermoregulator fulfilled, the machine will be working heat pump. The compressors are regulated by the evaporator water temperature. With use thermoregulator not fulfilled and recovery thermoregulator not fulfilled, the machine will be working heat pump. The compressors are regulated by the evaporator water temperature With use thermoregulator fulfilled and recovery thermoregulator not fulfilled, the machine will be working only recovery . The compressors are regulated by the recovery water temperature.. If the unit requests to carry out the defrosting, the machine is working defrosting The condensation fans are ON in all working modes excepting chiller + recovery and defrosting. The various working modes are selected by the control though three relays according to the following table Summer working: valve A (recovery) Valve B (use) Valve C (summer/winter) Only chiller OFF ON OFF Chiller + recovery ON ON OFF Only recovery ON OFF OFF Winter working : valve A (recovery) Valve B (use) Valve C (summer/winter) Heat pump OFF ON ON Only recovery ON OFF ON Defrosting OFF OFF ON



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The freecooling permits exploiting the extreme temperature conditions to cool the use water. Utilised inputs : • B1 evaporator entering water t. • B2 evaporator leaving water t. • External water t. • Freecooling battery entering water t. Utilised outputs • condensation fans • freecooling on/off valve • freecooling modulating valve Utilised parameters • type of valve being utilised - on/off or modulating • temperature delta for freecooling working activation • freecooling differential for the fan regulation Working description: The working in freecooling is activated when the following conditions are verified:

External T. < (freecooling battery input T. - Freecooling delta) When the freecooling is energised, the condensation fan working of the entire chiller (master pCO and slave pCO) is being subordinated to the input temperature of the freecooling battery. The reference Set-Point remains the Set-Point of the compressors whereas the differential must be set up in the masks dedicated to the freecooling parameters. The compressors keep on following the standard regulation. Below the fan regulation graph is illustrated as a function of the freecooling input temperature: It is possible to select from mask, the type of freecooling valve : On/Off or modulating (0/10V) When valve type is On/Off, the freecooling valve will be completely closed at setpoint and completely open at setpoint + 8% of the differential. When valve type is modulating, the freecooling valve will be completely closed at setpoint and completely open at setpoint +(differential/no. of fans).

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It’s possible to regulate fans, in freecooling mode, also when fans are driven by inverter. When inverter mode is set, there is nothing else to do. Instead of calculating steps for each of the present fans, software calculates the right output for inverter.

Freecooling differential

Set-Point

Freecooling Valve

Freecooling input temperature



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Utilised inputs • Output temperature probe Utilised parameters: • output probe enabling • antifreeze heater Set-Point • antifreeze heater differential • antifreeze alarm Set-Point • antifreeze alarm differential Utilised outputs: • antifreeze heater Each pCO unit can manage the antifreeze regulation provided that the output temperature probe is connected and enabled. The antifreeze regulation is always energised also when the machine is OFF, both summer working and winter working. Note : the antifreeze alarm on any pCO unit stops the entire machine.

Antifreeze set

Antifreeze diff.

Heater Set

Heater diff.

Antifreeze alarm activation Antifreeze heater activation



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The alarms will be divided into three categories : • Only signalling alarms (only display and buzzer signalling, signalling on display, buzzer, alarm relay) • Circuit alarms (deactivate only the relative circuit, signalling on display, buzzer, alarm relay) • Serious alarm (deactivates the entire system , signalling on display, buzzer, alarm relay) Only signalling alarms • Unit maintenance alarm • Compressor maintenance alarm • Damaged or disconnected clock card alarm • Mains-disconnected unit alarm • Driver alarms: driver high pressure, super-heat and absence of valve closing during the last stop (“not closed valve during stop”) Circuit alarm • High pressure/press. contr. alarm immediate compressor stop with manual reset • Lowe pressure alarm delayed at the compressor start immediate full function manual reset • Compressor thermal alarm immediate compressor stop with manual reset • Oil differential alarm delayed at the acquisition with manual reset • Fan thermal alarm immediate fan stop with manual reset • Driver – probe error alarm stop compressor/s of the relative circuit • Driver - motor error alarm stop compressor/s of the relative circuit • Driver - eeprom error alarm stop compressor/s of the relative circuit • Driver - battery malfunct. alarm stop compressor/s of the relative circuit (can be enabled) • Driver – low pressure alarm stop compressor/s of the relative circuit (can be enabled and delayed) Serious alarms • Water flow failure alarm digital outlet delayed at the start and at full function • Evaporator antifreeze alarm probe function in evaporator outlet with operation set and reset differential, with manual reset • Digital input serious alarm unit immediate stop with manual reset The reset of the alarms is executed by pressing twice the alarm button. No driver alarm is of the serious type.

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If you use the clock card having the PCOCLKMEM0 code with eeprom 32K, it will be possible to have a historical of the last 900 alarms being occurred. There are two masks of the alarm historical : one which displays the chiller parameters (setpoint, band, inlet temperature and outlet temperature) stored when an alarm occurs and another one that displays the driver parameters (superheat, pressure, temperature and valve position) stored as soon as an alarm takes place. For each alarm it is possible to store Mask 1 (CHILLER): • Code of the activated alarm • Date and hour of the activation • Regulation setpoint • Regulation band • Inlet temperature • Outlet temperature Mask 2 (DRIVER): • Code of the activated alarm • Date and hour of the activation • Super-heat temperature • Valve position (in “steps”) • Pressure from driver • Temperature from driver The data of this historical remain stored in the eeprom of the above mentioned card.



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Code Alarm Description Compressor

Off Fan Off

Pump Off

System Off

Reset (auto/man)

Delay Enabling

CHILLER AL01 Severe alarm * * * * man no enabling both on

master and slave AL02 Antifreeze alarm * * * man or

auto. (default is “manual”)

no resetting mode can be set by user

AL03 Evaporator pump thermal * * * * man no AL04 Condenser pump thermal * * * * man no AL05 Evaporator flow control * * * man selectable enabling both on

master and slave AL06 Condenser flow control * * * man selectable AL10 Low-pressure pressurestat 1 *Circuit 1 man selectable AL11 Low-pressure pressurestat 2 *Circuit 2 man selectable AL12 High-pressure pressurestat 1 *Circuit 1 man no AL13 High-pressure pressurestat 2 *Circuit 2 man no AL14 Oil-differential pressurestat 1 *Circuit 1 man selectable AL15 Oil-differential pressurestat 2 *Circuit 2 man selectable AL16 Compressor 1 thermal *Comp. 1 man no AL17 Compressor 2 thermal *Comp. 2 man no AL20 Fan 1 thermal * man no AL21 Fan 2 thermal * man no AL22 Fan 3 thermal * man no AL23 High press. transducer 1 *Circuit 1 * man no AL24 High press. transducer 2 *Circuit 2 * man no AL30 Damaged probe B1 * * * * auto. 60 sec. AL31 Damaged probe B2 * * * * auto. 60 sec. AL32 Damaged probe B3 auto. 60 sec. AL33 Damaged probe B4 auto. 60 sec. AL34 Damaged probe B5 auto. 60 sec. AL35 Damaged probe B6 auto. 60 sec. AL36 Damaged probe B7 auto. 60 sec. AL37 Damaged probe B8 auto. 60 sec. AL40 Pump maintenance man AL41 Compressor 1 maintenance man.. AL42 Compressor 2 maintenance man. AL50 Offline unit 1 auto. 30 sec. AL51 Offline unit 2 auto. 30 sec. AL54 Evaporator fan thermal man. AL55 Damaged 32k clock card man. DRIVER 1 AL60 Driver1 – Probe error * Circuit man. selectable AL61 Driver1 – Step motor error * Circuit man. AL62 Driver1 – Eeprom error * Circuit man. selectable AL63 Driver1 – Battery error * Circuit man. selectable Enabling AL64 Driver1 – High pressure man. selectable AL65 Driver1 – Low pressure * Circuit man. selectable Enabling AL66 Driver1 – Super-Heat man. selectable AL67 Driver1 – Valve not closed during stop man. AL68 Driver1 – wait for valve reopening man. AL69 Driver1 – wait for battery recharge man. AL70 Driver1 – wait for eeprom restart man. DRIVER 2 AL80 Driver2 – Probe error * Circuit man. selectable AL81 Driver2 – Step motor error * Circuit man. AL82 Driver2 – Eeprom error * Circuit man. selectable AL83 Driver2 – Battery error * Circuit man. selectable Enabling AL84 Driver2 – High pressure man. selectable AL85 Driver2 – Low pressure * Circuit man. selectable Enabling AL86 Driver2 – Super-Heat man. selectable AL87 Driver2 – Valve not closed during stop man. AL88 Driver2 - wait for valve reopening man. AL89 Driver2 - wait for battery recharge man. AL90 Driver2 - wait for eeprom restart man.



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The alarms coming from the driver cards also report the indication of the driver that has generated the alarm (in the example : “D:3”) Example: m_Drv_AL60 +--------------------+ ¦AL:066 D:3 U:2¦ ¦ Superheat alarm ¦ ¦ ¦ ¦ ¦ +--------------------+

When an alarm mask appears relative to the driver card, above left the writing “Driver” appears, furthermore, on the right “D :” indicates the driver whilst “U :” indicates the pCO card connected to the driver indicated. In the example, the alarm comes from the driver no. 3 which is connected via pLAN to the pCO card no. 2. This numeration is relative to the allo connection diagram explained above and successively proposed again. Short summary of the driver card alarms • probe error (malfunctioning or failure of the temperature and/or pressure probe) • step motor error (valve motor connection damage) • eeprom error (writing or reading eeprom malfunction) • battery error (battery malfunction) • high pressure on the EXV driver (the operating pressure has exceeded the MOP max. threshold) • low pressure on the EXV driver (the operating pressure has exceeded the LOP min. threshold) • superheat alarm • valve not closed during stop (valve not completely closed after the last blackout) • I wait for valve reopening (warning! I wait for valve complete closing in order to restart correctly) • I wait for battery recharge (warning! I wait for battery recharge) • I wait for eeprom restart (warning! I wait for eeprom restart) (See the mask list at the end of the manual for more information). Furthermore, it is possible to stop the circuit compressor/s when the relative driver reports the alarm “battery error” and/or “low pressure mode for EXV driver” (LOP mode). It is also possible to enter a delay for the last alarm (the default is : alarm enabled with a 0 second delay). m_manuf_246_Drv +--------------------+ ¦Driver alarms ¦ ¦Stop driver 2 ¦ ¦compressors if in ¦ ¦err. of battery N¦ +--------------------+

thermoregulation probe of all the system

Driver 4

Driver 3

Driver 2

Driver 1

pCO 2 (Slave)

Terminal LCD (4x20)

pCO 1

(Master)

EXV 4 EXV 3 EXV 2 EXV 1



S/$1 QHWZRUN All the devices connected to the pLAN network are identified through their own address. If the same address is assigned to several units, the network can not operate. Since terminals and pCO I/O cards utilise the same type of addressing, terminals and pCO cards with the same identifier cannot exist. The values selectable for the address range from 1 to 16 as to the terminals and from 1 to 16 with regard to the I/O cards. The overall number of peripherals that can be connected t the network is 16. Actually, maximum combinations can be: 8 terminals + 8 I/O cards 1 terminal + 15 I/O cards etc. The addresses are set up for the terminals through the dipswitches placed on the back, whereas for the I/O cards the network-option card is required.

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Network-option card (PCOADR0000 / PCOCLKMEM0) The network-option card is available in two versions: only dipswitch and LED Cod.: PCOADR0000 dipswitch, LED and calendar clock Cod.: PCOCLKMEM0 Such card is indispensable for the network operation of the pCO I/O cards, also if only one pCO board is used. The following table reports dipswitch codify for pLAN address from 1 to 16.

Adr Sw1 Sw2 Sw3 Sw4 Sw5 1 ON off off off off 2 off ON off off off 3 ON ON off off off 4 off off ON off off 5 ON off ON off off 6 off ON ON off off 7 ON ON ON off off 8 off off off ON off 9 ON off off ON off 10 off ON off ON off 11 ON ON off ON off 12 off off ON ON off 13 ON off ON ON off 14 off ON ON ON off 15 ON ON ON ON off 16 off off off off ON

Sw1Sw2Sw3Sw4Sw5

OnOff R G V

In the standard application EPSTDEMCHA modular chiller addresses for the pCO units: Unit no.1

Unit no.2 Unit no.3 Unit no.4

1 2 3 4



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Terminal card viewed from behind

1 2 3 4 5

On

Off6 7 8

Conn.rete locale

Conn.stampante

Microprocessore

Dip-switch

The address of the terminals is set up through the dipswitch bench found on the back . The address is selectable in the 1-16 range by utilising the 1-5 dipswitch. The address value is obtained via the following table (see also previous paragraph): The terminal of the 4 relay pCO units must have an address greater than 5.

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• Each pCO card, connected to the network, can manage several terminals (max. 3). The display on them occurs simultaneously and not independently, it the same thing as having keypads and displays connected in parallel.

• Each terminal associated to a certain card can be private or shared. • A terminal is said to be private if it displays exclusively the output of an I/O card. • A terminal is said to be shared if, automatically or through keypad, may be switched between several control cards. • Each pCO keeps constantly updated the display of the private terminals; on the contrary, if a shared terminal exists, the latter will be updated

only if the involved pCO have presently its control. From the logical point of view the following diagram is valid:

Privato

Privato

Condiviso

PcO

PcO

PcO

PcO

Privato

Privato

1

2

3

4

• In the example the shared terminal is associated with 4 I/O cards but, in the example, only the 2 can display data and receive keypad commands from it . The switching between cards takes place, in a cyclic sequence (1→2→3→4→1....), by pressing the button (or a combination of two) to which this function has been assigned.

• The communication can also occur automatically upon direct request of the program. For instance, a I/O card can request the control of the shared to display alarms or, on the contrary, give it to the following one at a precise established time (cyclic rotation).

PRIVATE PRIVATE

PRIVATE PRIVATE

SHARED

pCO 1

pCO 2

pCO 4

pCO 3

Unit terminal n.: 1,2,3,4.

5

Address 5 dip-switches



The number and type of terminals is established during the initial network configuration. The relevant data are stored in the EEPROM memory of each single I/O card.

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• The first operation to be performed, when for the fist time a pLAN network is to be started or an I/O is replaced, is the activation of the terminal configuration procedure.

• Before beginning such procedure make sure that each I/O card and each terminal has been given the correct address during the network design. It is important to remember that the address being set up through the dipswitches is received only if a reset of the device is carried out. Furthermore, you should to carry out a global resetting of all the network devices if you realise that you have chosen the wrong configuration of the addresses (several cards with the same address).

• The configuration procedure has to be activated for each I/O card and must involve all the network terminals. Such procedure can be activated from any terminal, which can also have been temporarily connected only to carry out the configuration operations and removed when finished.

• The operations to be done are the following: Step 1: I/O card selection • The procedure is activated by pressing simultaneously the 0-1-2 buttons for at least 5 sec. (for compatibility, also the ��-Enter buttons carry

out the same function):

T 0 T 1 T 2 T 3 T 4 T 6 T 5

T 8 T 9 T 10 T11 T12 T13T14 T15 On-Off Alarm Enter Up Down

• If the display is of the LCD type, the following mask is displayed:

Terminal Adr: nn I/O Board Adr: 12

• The Terminal Adr field fixed and represents the address of the terminal on which you are operating, set up through the posterior dipswitch. • The I/O Board Adr field at first displays the address of the pCO card actually connected to the terminal. If the terminal is not connected to any

pCO card the '--' characters are shown. Through the arrow-buttons it is possible to modify such selection in order to force the connection to another controller. The values displayed during the selection are the addresses of the pCO cards actually being connected to network. If no pCO at the moment is active, it is not possible to change the '--' display.

• By pressing the Enter button you get out of the first phase of the procedure, which resides in the terminal, and you enter the real terminal configuration mask, see step 2.

• If the terminal remains inactive (no button pressed) for more than 15 seconds, it automatically leaves the configuration procedure. Step 2: selection of the associated terminals For LCD displays the displayed masks are:

Terminal Config Press ENTER to continue

Enter

⇓

P:12 Adr Priv/Shared Trm1 02 Sh Trm2 03 Pr Trm3 None -- Ok? No

• In this mask the Enter button moves the cursor from one field to another whereas the arrow-buttons change the current value of the field. The

P:12 symbol in this case indicates that the I/O address-12 card has been selected .



• To leave the configuration procedure and store, select the 'Ok ? no' field and with the cursor buttons until 'Yes' appears and then press Enter. To get out without storing, it is necessary to wait for 30 sec without pressing any button.

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• If the terminal shows the state of inactivity of the CPU card of which it is displaying the output, clears completely the display and shows the message:

I/O Board xx fault

• If the terminal does not receive the message of network synchronisation (token) for more than 10 sec, it clears completely the display and

scows the message:

NO LINK

• this is equivalent to the condition of OFF green LED for the I/O cards. Display of the network state: NetSTAT • In the program there is a procedure, can be activated only in the LCD version, that allows the display in real time the state and type of the

peripherals actually being connected. • Such procedure is activated by the simultaneous pressure of the 0-1-2 buttons (or else Up-Down-Enter) for at least 10 sec. (after the elapse of

the first 5 sec you obviously enter the terminal configuration procedure). The mask displayed is the following:

NetSTATT: xx Enter To Exit

8162432

19

1725

• The number after T: indicates the address of the terminal on which the procedure is activated, the symbols indicate the type of peripheral (terminal/pCO) and the respective address.

• In the example the network turns out to be composed of pCO cards with address 1, 2, and of 3 terminals with address 3, 4, 15.



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The software has numerous configuration / display branches so subdivided (the left column reports the branch mask titles, whereas the right column describes briefly the function of the branch itself) : • EXV manufacturer C1 Æ Driver 1 configuration (manufacturer parameters) • EXV manufacturer C2 Æ Driver 2 configuration (manufacturer parameters) • EXV Carel C1 Æ Driver 1 configuration (CAREL parameters) • EXV Carel C2 Æ Driver 2 configuration (CAREL parameters) • EXV maintenance C1 Æ Driver 1 configuration (maintenance parameters) • EXV maintenance C2 Æ Driver 2 configuration (maintenance parameters)

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The password masks which allow the access to the configuration branches are reported below.

m_manuf_PW_C1 +--------------------+ ¦Manufacturer D:1 U:1¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+

After password insertion, the software jumps to the driver 1 “manufacturer” configuration branch. Once entered the branch, by pressing the MENU button, it is possible to return to this mask. m_CAREL_PW_C1 +--------------------+ ¦CAREL D:1 U:1¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+

After password insertion, the software jumps to the driver 1 “CAREL” configuration branch. Once entered the branch, by pressing the MENU button, it is possible to return to this mask. m_manuf_PW_C2 +--------------------+ ¦Manufacturer D:2 U:1¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+

After password insertion, the software jumps to the driver 2 “manufacturer” configuration branch. Once entered the branch, by pressing the MENU button, it is possible to return to this mask. m_CAREL_PW_C2 +--------------------+ ¦CAREL D:2 U:1¦ ¦Insert password ¦ ¦ ¦ ¦ 0000 ¦ +--------------------+

After password insertion, the software jumps to the driver 2 “CAREL” configuration branch. Once entered the branch, by pressing the MENU button, it is possible to return to this mask.



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6SHFLDO IXQFWLRQ� ´*R $KHDGµ +--------------------+ ¦Maintenance D:1 U:1¦ ¦System’s waiting for¦ ¦VALVE OPEN RESTART ¦ ¦Go Ahead ? N ¦ +--------------------+

There are three alarm conditions that prevent the driver from executing the normal regulation : • valve reopening Æ during the last blackout the valve has not been completely closed • battery recharge Æ the battery does not operate correctly or is discharged or else disconnected • restart eeprom Æ eeprom malfunctioning Thanks to the “Ignore” function, these alarms may be ignored so as to permit the valve regulation by the driver (which otherwise would continue to keep it closed) up to the alarm stop. CAUTION ! alarm deletion means to ignore them; it is therefore advisable to check carefully that the system does not undergo damages or malfunctioning or that it becomes unreliable (e.g. : if “recharge battery” is signalled, probably this means that the battery is not charged or that it is not connected, etc. This, in case of blackout can allow the valve closing. The valve would thus remain open also at the unit restart). If none of the three above mentioned alarms is present, the mask changes to the following one : +--------------------+ ¦Maintenance D:1 U:1 ¦ ¦ ¦ ¦NO PROBLEM ¦ ¦ ¦ +--------------------+

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The “heat pump” mode possesses a different hardware configuration according to the type of valve being utilised. As for EX-7 and EX-8 valves, the configuration involves max. 1 operating valve per pCO card. In fact, there are two connected valves, but they are never utilised simultaneously : in chiller mode, the valve 1 is operating, while the valve 2 is kept closed ; in heat pump mode, the valve 2 is operating, while the valve 1 is kept closed . No problem as for the EX-6 valve which is bidirectional to the refrigerating gas flow. Each pCO card can therefore drive max. 2 EX-6 valves also in heat pump configuration.

Valve type N. max. of circuits pCO card in mode ONLY CHILLER

N. max. of circuits pCO card in mode CHILLER / Heat Pump

EX6 2 2 EX7 2 1 EX8 2 1



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The regulation algorithm offers the following functions: • superheat control (super-heat mode), in unit normal operating conditions the superheating is maintained constant and equal to the set-point

value being set ; • suction pressure control (Pressure mode), in overload or underload conditions. These conditions are detected when the pressure exceeds the

MOP (Maximum Operating Pressure) or LOP (Lowest Operating Pressure) set limits. In these conditions, the driver tries to bring back the pressure within the MOP and LOP limits.

In these circumstances the superheat is in any case controlled. • Diagnostics, alarms. The driver can recognise various alarm situations (see relative paragraph). According to the regulation algorithm, the pCO card that manages the circuit communicate to the driver the state of the compressor capacity controls whenever they are changed. In this way the driver can know the active refrigerating capacity and so it preposition the valve in the position that as regards the rating it corresponds to such power (according to a curve characteristic of the valve itself). In this way algorithm is can face promptly to abrupt variations (=insertion of compressor capacity control) of the refrigerating capacity. Once pre-positioned, the valve is regulated automatically according to the measurements carried out by the regulation probes. For further details, see the next paragraphs. All the parameters that will be mentioned below are described in the driver parameter table.

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“Capacity’” is the parameter with which the pCO card that manages the circuit communicates to the driver the number of active stages of the compressor active stage every time that they are changed. This information is given as percentage :

Capacity = number of active stages / “stages present” * 100 “Stages present” is the total number of stages present in the refrigeration circuit is a driver configuration parameter. NB : if the “Capacity’” is zero, the valve is closed. The regulation of the valve is influenced by the “Capacity’” only in the initial phase of pre-positioning. Successively the opening/closing of the valve takes place according to the super-heat or pressure measured values.

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After the pre-positioning, the aim of the regulation algorithm is to ensure a super-heat value as constant as possible. The desired value is set with “super-heat setpoint” parameter. The correction on the error occurred during the operation takes place thanks to a combined algorithm of PID type (proportional + integral + differential). The values of the three parameters (“P”, “I”, “D”) can be set manually by the user (parameter “ Type of regulation ”= manual reg.; in this case the regulation will maintain constant the PID values being set) or real time adjusted by the software (“Type of regulation” = “self-adaptive” parameter; in this case the regulation is self-adaptive). Beside the super-heat value, there exists another fundamental parameter during the regulation: the gas pressure. There are two parameters (“Operating pressure - min. set ” and “ Operating pressure - max. set ”) that characterise the operating pressure range, inside which the regulation is carried out by bringing the super heat back to the set-point value (Super-heat mode). Except the range of the values measured by “ Operating pressure - min. set “ and “ Operating pressure - max. set”, the operating conditions voro are considered critical and the regulation priority shifts from the super heat to the pressure itself. In other words, the main quantity being regulated turns out to be the pressure (Pressure mode) and the valve is managed so as to bring the pressure back inside the operating range. During this phase, the regulation evaluates in any case the superheat in order to prevent it from taking values critical for the unit. “ Superheat hysteresis after high pressure alarm” is the parameter that enable you to set the security range that must be met to stop the high or low pressure alarm and to return to the “normal” regulation. In other words : • If the high pressure alarm takes place, the alarm stops when the super-heat value goes below “ Super-heat setpoint ”-“ Super-heat hysteresis

after high pressure alarm”. • If the low pressure alarm takes place, the alarm stops when the super-heat value goes above “ Super-heat setpoint ”+“ Super-heat hysteresis

after high pressure alarm ”. Other interesting parameters utilised during the regulation are : • “Close valv. At pos. min. when super-heat lower than” : permits the setting of a minimum threshold below which the valve is closed at minima

minimum position (see parameter : “No. of steps below which the valve is considered closed”). • “ System stability ” : provides a system stability index. The values that represent the system stability are range from “ Syst. stab. sup. lim.” and “

Syst. stab. inf. lim.”. External values inform that the regulation has not yet reached an equilibrium point. • “ valve posit. ”, “super-heat, evaporator”, “temperature, evaporator” and ”suction, pressure”: these are parameters of only display that

respectively inform on the valve position (expressed in steps), super-heat, evaporation temperature and suction pressure. All these values are collected in a mask (one per each driver) placed at the end of the I/O branch.



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This is the full list of variables managed by the supervisory system. Digital Variables Stream Direction

Type Index Variable Name

Description

OUT D 1 SYSON_S Unit On/Off. See “Architecture of the master/slave system” (page 4) for more informations. OUT D 10 DOUT_1 Digital Out 1 OUT D 11 DOUT_2 Digital Out 2 OUT D 12 DOUT_3 Digital Out 3 OUT D 13 DOUT_4 Digital Out 4 OUT D 14 DOUT_5 Digital Out 5 OUT D 15 DOUT_6 Digital Out 6 OUT D 16 DOUT_7 Digital Out 7 OUT D 17 DOUT_8 Digital Out 8 OUT D 18 DOUT_9 Digital Out 9 OUT D 19 DOUT_10 Digital Out 10 OUT D 20 DOUT_11 Digital Out 11 OUT D 21 DOUT_12 Digital Out 12 OUT D 22 DOUT_13 Digital Out 13 OUT D 28 master Unit is Master OUT D 29 slave Unit is Slave OUT D 40 Main_Pump Main pump or Main Fan (if Air/Air unit is selected) OUT D 41 Cond_Pump Condensator pump IN/OUT D 42 SuperV_OnOff Supervisor On/Off IN/OUT D 44 Sum_Win_Sup Chiller / Heat Pump selection from supervisor OUT D 46 En_Freecooling Freecooling enabling from selected configuration OUT D 47 En_AA_Unit Air/air Unit selected (“Main Pump” becomes “Main Fun”) OUT D 48 En_WW_Unit Water/Water unit selected OUT D 49 Sum_Win_Sel Chiller / Heat Pump selection from digital input OUT D 50 En_Sum_Win Chiller / Heat Pump selection from digital input enabling OUT D 51 Cooling_Heating 0=chiller mode, 1=heat pump mode IN/OUT D 53 Cond_Config Kind of condensator : 0=single, 1=double IN/OUT D 56 Inverter_Steps Fan regulation:

0 = inverter ; 1 = steps OUT D 57 Inverter Fan regulation:

1 = inverter ; 0 = steps IN/OUT D 58 FC_Valve_Type Freecooling valve type: 0 = On / Off, 1 = 0 / 10V OUT D 59 Not_FC_Vlv_Type Freecooling valve type: 1 = On / Off, 0 = 0 / 10V IN/OUT D 60 Unloads_Logic Unloads logic:

0 = normally closed, 1 = normally open IN/OUT D 61 Valve4way_Logic 4 way valve logic :

0 = normally closed, 1 = normally open IN/OUT D 30 En_B1 B1 probe enabling IN/OUT D 31 En_B2 B2 probe enabling IN/OUT D 32 En_B3 B3 probe enabling IN/OUT D 33 En_B4 B4 probe enabling IN/OUT D 34 En_B5 B5 probe enabling IN/OUT D 35 En_B6 B6 probe enabling IN/OUT D 36 En_B7 B7 probe enabling IN/OUT D 37 En_B8 B8 probe enabling OUT D 70 GLB_AL General Alarm OUT D 71 MAN_FREEZE Antifreeze Alarm OUT D 72 mAL_OV1 Compressor 1 Thermal OUT D 73 mAL_OV2 Compressor 2 Thermal OUT D 74 mAL_OV3 Compressor 3 Thermal OUT D 75 mAL_OV4 Compressor 4 Thermal OUT D 76 mAL_CFLOW Condensator flow alarm OUT D 77 mAL_EFLOW Evaporator flow alarm OUT D 78 mAL_HP1 Circuit 1 High pressure alarm (pressurestat) OUT D 79 mAL_HP2 Circuit 2 High pressure alarm (pressurestat) OUT D 80 mAL_OD1 Circuit 1 Oil differential alarm OUT D 81 mAL_OD2 Circuit 2 Oil differential alarm OUT D 82 mAL_LP1 Circuit 1 Low Pressure alarm OUT D 83 mAL_LP2 Circuit 2 Low Pressure alarm OUT D 84 mAL_HPT1 Transducer 1 High Pressure alarm OUT D 85 mAL_HPT2 Transducer 2 High Pressure alarm OUT D 86 mAL_SERIOUS Serious alarm from digital input OUT D 87 mAL_F1_OVERLOAD Condensator Fan 1 thermal OUT D 88 mAL_F2_OVERLOAD Condensator Fan 2 thermal OUT D 89 mAL_F3_OVERLOAD Condensator Fan 3 thermal OUT D 90 mAL_FAN Main fan thermal OUT D 91 mAL_CPUMP Condensator Pump thermal OUT D 92 mAL_PUMP Evaporator Pump thermal OUT D 93 mAL_UNIT1_OFFL Unit 1 offline OUT D 94 mAL_UNIT2_OFFL Unit 2 offline OUT D 95 mAL_UNIT3_OFFL Unit 3 offline OUT D 96 mAL_UNIT4_OFFL Unit 4 offline OUT D 97 mAL_B1 B1 probe broken or not connected OUT D 98 mAL_B2 B2 probe broken or not connected OUT D 99 mAL_B3 B3 probe broken or not connected OUT D 100 mAL_B4 B4 probe broken or not connected OUT D 101 mAL_B5 B5 probe broken or not connected OUT D 102 mAL_B6 B6 probe broken or not connected OUT D 103 mAL_B7 B7 probe broken or not connected OUT D 104 mAL_B8 B8 probe broken or not connected OUT D 105 mAL_H_MAIN_PUMP Main fun or Main pump maintenance alarm OUT D 106 mAL_H_COMP1 Compressor 1 maintenance alarm



OUT D 107 mAL_H_COMP2 Compressor 2 maintenance alarm OUT D 108 mAL_H_COMP3 Compressor 3 maintenance alarm OUT D 109 mAL_H_COMP4 Compressor 4 maintenance alarm OUT D 110 mAL_CLOCK32 32k clock board broken or not connected OUT D 111 SupV_Dev1 Device 1 state (compressor or capacity control). If it is a capacity

control, the state is independent of the selected logic (N.A./N.C.) OUT D 112 SupV_Dev2 Device 2 state (compressor or capacity controls). If it is a capacity

control, the state is independent of the logic being seleced (N.A./N.C.)

OUT D 113 SupV_Dev3 Device 3 state (compressor or capacity control). If it is a capacity control, the state is independent of the selected logic (N.A./N.C.)

OUT D 114 SupV_Dev4 Device 4 state (compressor or capacity control). If it is a capacity control, the state is independent of the selected logic (N.A./N.C.)

OUT 115 No_Press_Defr Defrosting not terminated by the pressure controller/controllers OUT 116 Not_En_WW_Unit Non water/water machine OUT 117 En_Recover Enabled recovery OUT 118 Not_En_Ext_SetP External setpoint disabled OUT 119 Unit_is_HP Unit in heat pump mode OUT 132 Not_SysON_S Unit OFF OUT 155 Drv2_Enabled Driver 2 enabled (present) OUT 156 OFF_C1_By_Drv Circuit 1 compressor stop due to alarm/s coming from the driver (or

the drivers) which are connected to the circuit 1 OUT 157 OFF_C2_By_Drv Circuit 2 compressor stop due to alarm/alarms coming from the driver

(or the drivers) are connected to the circuit 2 IN/OUT 124 En_Compr1 Compressor 1 enabling IN/OUT 125 En_Compr2 Compressor 2 enabling IN/OUT 126 En_Compr3 Compressor 3 enabling IN/OUT 127 En_Compr4 Compressor 4 enabling OUT D 133 mAL_ALCO_67_R DRIVER 1 alarm – broken or disconnected probe OUT D 134 mAL_ALCO_68_R DRIVER 1 alarm - broken or disconnected step-motor OUT D 135 mAL_ALCO_69_R DRIVER 1 alarm – malfunctioning Eeprom OUT D 136 mAL_ALCO_70_R DRIVER 1 alarm - broken or disconnected battery OUT D 137 mAL_ALCO_71_R DRIVER 1 alarm – high pressure OUT D 138 mAL_ALCO_72_R DRIVER 1 alarm – low pressure OUT D 139 mAL_ALCO_73_R DRIVER 1 alarm – super-heat OUT D 140 mAL_ALCO_74_R DRIVER 1 alarm – not closed valve (after the last stop) OUT D 141 mAL_ALCO_75_R DRIVER 1 alarm – wait for valve re-initialisation OUT D 142 mAL_ALCO_76_R DRIVER 1 alarm - wait for battery re-initialisation OUT D 143 mAL_ALCO_77_R DRIVER 1 alarm - wait for eeprom re-initialisation OUT D 144 mAL_ALCO2_67_R DRIVER 2 alarm - broken or disconnected probe OUT D 145 mAL_ALCO2_68_R DRIVER 2 alarm broken or disconnected step-motor OUT D 146 mAL_ALCO2_69_R DRIVER 2 alarm - malfunctioning Eeprom OUT D 147 mAL_ALCO2_70_R DRIVER 2 alarm - broken or disconnected battery OUT D 148 mAL_ALCO2_71_R DRIVER 2 alarm - high pressure OUT D 149 mAL_ALCO2_72_R DRIVER 2 alarm - high pressure OUT D 150 mAL_ALCO2_73_R DRIVER 2 alarm - super-heat OUT D 151 mAL_ALCO2_74_R DRIVER 2 alarm - not closed valve (after the last stop) OUT D 152 mAL_ALCO2_75_R DRIVER 2 alarm - wait for valve re-initialisation OUT D 153 mAL_ALCO2_76_R DRIVER 2 alarm - wait for battery re-initialisation OUT D 154 mAL_ALCO2_77_R DRIVER 2 alarm - wait for eeprom re-initialisation OUT D 158 Go_Ahead_En Driver 1 - “ignore alarms” option enabling (only if at least one of

the three alarms “ wait for re-initialisation...” is present) OUT D 159 Go_Ahead_En2 Driver 2 - “ignore alarms” option enabling (only if at least one of

the three alarms “ wait for re-initialisation...” is present)

Analog Variables Stream Direction


Description

OUT A 1 AIN_1 Analog input 1 OUT A 2 AIN_2 Analog input 2 OUT A 3 AIN_3 Analog input 3 OUT A 4 AIN_4 Analog input 4 OUT A 5 AIN_5 Analog input 5 OUT A 6 AIN_6 Analog input 6 OUT A 7 AIN_7 Analog input 7 OUT A 8 AIN_8 Analog input 8 OUT A 9 Analog_Out_1 Analog output 1 OUT A 10 Analog_Out_2 Analog output 2 IN/OUT A 11 S_Temp_Setpoint Summer setpoint (evaporator setpoint) IN/OUT A 12 W_Temp_Setpoint Winter setpoint (condensator setpoint) IN/OUT A 13 Cond_Setpoint Condensation setpoint OUT A 14 In_Temp_Setp Actual setpoint



Integer Variables Stream Direction


Description

OUT I 1 STAEFA supervisor OUT I 2 STAEFA supervisor OUT I 3 STAEFA supervisor OUT I 4 STAEFA supervisor OUT I 5 STAEFA supervisor OUT I 6 STAEFA supervisor OUT I 7 STAEFA supervisor OUT I 8 STAEFA supervisor UT I 9 STAEFA supervisor OUT I 10 CU_Remote_Ctrl Remote compressor control (0-10V) OUT I 11 Recover_Mode Recover mode :

1 = recover only 2 = chiller 3 = chiller + recover 4 = defrost 5 = recover only 6 = heat pump

OUT I 12 Unit_Status Unit status : 0 = unit On 1 = Off by alarm 2 = Off by supervisor 3 = Off by time zones 4 = Off by digital input (DIN3) 5 = Off by terminal (On / Off button) 6 = manual

IN/OUT I 13 Cond_Fans_Mng Condensator fan management : 0 = none 1 = pressure 2 = temperature

OUT I 20 X_H_Main_Pump Main pump hour meter (high byte) OUT I 21 X_L_Main_Pump Main pump hour meter (low byte) OUT I 22 X_H_Comp1 Compressor 1 hour meter (high byte) OUT I 23 X_L_Comp1 Compressor 1 hour meter (low byte) OUT I 24 X_H_Comp2 Compressor 2 hour meter (high byte) OUT I 25 X_L_Comp2 Compressor 2 hour meter (low byte) OUT I 26 X_H_Comp3 Compressor 3 hour meter (high byte) OUT I 27 X_L_Comp3 Compressor 3 hour meter (low byte) OUT I 28 X_H_Comp4 Compressor 4 hour meter (high byte) OUT I 29 X_L_Comp4 Compressor 4 hour meter (low byte) OUT I 30 Config_Unit Unit configuration:

0 = CCCC 1 = CUCU 2 = CUUU [C = compressor ; P = unload]

IN/OUT I 31 Config_Type Unit number: 0 ÷ 23 (see configuration tables) OUT I 32 Ph_Circ_Type Physical kind of circuit =

0 = water / air 1 = air / air 2 = water / water

IN/OUT I 33 N_Comps Total number of compressors IN/OUT I 34 Comps_x_Unit Local number of compressor (same of all units) IN/OUT I 35 N_Unloaders Number of unloads per compressor (same of all units) IN/OUT I 36 Cond_Fans Number of condensation fan (1÷3 with single condensator, 1÷2 double condensator) OUT I 37 Fan1_Speed_Reg Circuit 1 inverter regulation speed OUT I 38 Fan2_Speed_Reg Circuit 2 inverter regulation speed OUT I 39 Freecool_Valve Freecooling valve opening IN/OUT I 51 Go_Ahead Driver 1 - Ignores “wait for re-initialisation...” alarms and goes on

with the regulation IN/OUT I 52 Go_Ahead2 Driver 1 - Ignores “wait for re-initialisation...” alarms and goes on

with the regulation OUT I 47 Off_or_Manual Driver 1 :

0 = closed valve 1 = manual positioning

OUT I 48 Off_or_Manual2 Driver 2 : 0 = closed valve 1 = manual positioning

OUT I 49 Regulation Driver 1 – Regulation type : 0 = none (OFF) 2 = self-adaptive 3 = from user configuration 5 = forced opening

OUT I 50 Regulation2 Driver 1 – Regulation type : 0 = none (OFF) 2 = self-adaptive 3 = from user configuration 5 = forced opening

OUT I 79 Go_Ahead_Err Driver 1 : 0 = no problem 1 = valve restart 2 = battery restart 3 = eeprom restart

OUT I 80 Go_Ahead_Err2 Driver 2 : 0 = no problem 1 = valve restart 2 = battery restart 3 = eeprom restart

OUT I 81 Gas_Type Driver 1 : 0 = ---- 1 = R134A 2 = R22 3 = R404A 4 = R410A 5 = R407C

OUT I 82 Gas_Type2 Driver 2 :



0 = ---- 1 = R134A 2 = R22 3 = R404A 4 = R410A 5 = R407C

OUT I 83 Valve_Type Driver 1 : 0 = EX7 or lower capacity 1 = EX8 or lower capacity 2 = EX6 or lower capacity

OUT I 84 Valve_Type2 Driver 2 : 0 = EX7 or lower capacity 1 = EX8 or lower capacity 2 = EX6 or lower capacity

OUT I 85 Super_Heat_Set Driver 1 – Superheat setpoint OUT I 86 Super_Heat_Set2 Driver 2 – Superheat setpoint OUT I 87 Drv1_Req_Stages Requested stages forwarded to the driver 1 for the pre-positioning OUT I 88 Drv2_Req_Stages Requested stages forwarded to the driver 2 for the pre-positioning OUT I 53 ALCO_5_R Driver 1 – Requested capacity OUT I 54 ALCO_6_R Driver 1 - Valve position (in steps) OUT I 55 ALCO_7_R Driver 1 - Valve position (in steps) calculated according to the

superheating value OUT I 56 ALCO_8_R Driver 1 – Sampling time OUT I 57 ALCO_9_R Driver 1 – System stability index OUT I 58 ALCO_11_R Driver 1 – Suction temperature OUT I 59 ALCO_12_R Driver 1 - Suction pressure OUT I 60 ALCO_13_R Driver 1 – Calculated saturation temperature OUT I 61 ALCO_14_R Driver 1 – Current superheat OUT I 62 ALCO_22_R Driver 1 – Battery internal resistance OUT I 63 ALCO_23_R Driver 1 – Time elapsed from the last battery test (in hours) OUT I 64 ALCO_24_R Driver 1 - Time elapsed from the last battery use (in hours) OUT I 53 ALCO2_5_R Driver 2 – Required capacity OUT I 54 ALCO2_6_R Driver 2 - Valve position (in steps) OUT I 55 ALCO2_7_R Driver 2 - Valve position (in steps) calculated according superheat

value OUT I 56 ALCO2_8_R Driver 2 – Sampling time OUT I 57 ALCO2_9_R Driver 2 - System stability index OUT I 58 ALCO2_11_R Driver 2 - Suction temperature OUT I 59 ALCO2_12_R Driver 2 - Suction pressure OUT I 60 ALCO2_13_R Driver 2 - Calculated saturation temperature OUT I 61 ALCO2_14_R Driver 2 – Current superheat OUT I 62 ALCO2_22_R Driver 2 - Battery internal resistance OUT I 63 ALCO2_23_R Driver 2 - Time elapsed from the last battery test (in hours) OUT I 64 ALCO2_24_R Driver 2 - Time elapsed from the last battery use (in hours)

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The figure below shows the control board terminal with open front panel. The microprocessor-controlled terminal features a 4 line x 20 column LCD display, keypad and LED, allowing the user to set the control parameters (Set-Point, differential band, alarm thresholds) and carry out basic operations. It is not essential for the terminal to be connected to the base board for the normal control operation.

menu I/O set prog

info? on-off alarm enter

The terminal is used for the initial setting of parameters and the display of operating data, and in fact allows: • the initial setting of the machine with security password • the possibility to modify in run-time the essential operating parameters • the display and acoustic signalling (buzzer) of any active alarms. • the display of all measured values Technical characteristics Power is supplied through the base board using a 6-way connector. Correct operation requires a temperature range comprised between 0 and 50 °C, whereas the storing ones may range between - 20 and 50 °C. Buttons are: 10 on polycarbonate 5 with translucid-silicone-rubber keyboard. LEDs are: 3 under the rubber buttons 10 under the polycarbonate The buzzer is electromagnetic auto-oscillating about 2 KHz , with continuous operation. The electronic board consists of the LED and button support and is positioned inside a standard plastic case, as well as the display. The installation can be both wall and panel mounted. As shown in the figure on page. 4, the casing has a door opening on the front with a maximum slant 150 degrees. When the door is closed, you can only access 5 silicone rubber buttons, therefore the relevant 3 LEDs that back light them. The pCO keypad is equipped with a 15 buttons that along with the liquid crystal display represents the interface between the operator and the system.

menu I/O set prog

info? on-off alarm enter

I is possible to access directly from the keypad the main parameters or parameter loops, subdivided as follows:

ON / OFF button on-off

Energises or inhibits the controlled devices.

ALARM button alarm

Goes to the first active alarm mask and stops the alarm buzzer. When you are on an alarm mask, a second pressure determines the alarm reset and displays the first mask. If no alarm is present it goes to the NO ACTIVE ALARM mask

The alarm-mask sequence is obtained by pressing the � / � arrow buttons.



Buttons When the cursor is positioned in HOME (cursor in the 0,0 position of the display) these buttons function is to scroll the masks of a group. From the last one it is possible to access the first one and vice versa. If the cursor

is inside a numerical field, the buttons increase or decrease the value on which the cursor is positioned. If it is a choice field, by pressing the σ /τ buttons the available options are displayed ( e. g. Yes / No).

ENTER button In the value-selection masks, by pressing the button the first time, the cursor moves to the first introduction field. At the successive pressures, the selected value is confirmed and the cursor moves to the successive one. Afterwards, from the last field you come back again to the HOME position.

MENU button menu

Go to the M_MAINMASK mask

INFO button info?

Switches the terminal control from one pCO card to another pCO card.

MANUT button Goes to the M_MAINT5 mask

PRINT button NOT SUPPLIED

I/O button I/O

Goes to the M_INOUT5 mask

HOUR button Goes to the m_CLOCK5 mask

SET button set

Goes to the M_SETPOINT5 mask

PROG button prog

Password is requested . If correctly introduced , you go to the M_PW_USER mask

MENU+PROG buttons menu prog+

The buttons must be pressed and released simultaneously. Password is requested. If correctly introduced, you go to the M_PW_MANUFAT mask.

LED Beside each button a green LED is found that lights up when the associated button is pressed and indicates in which group of masks the user is. When you enter the machine-configuration mask group, by pressing the MENU+PROG buttons the LED of the PROG button lights. Three other LEDs are placed under the rubber buttons and indicate respectively: 1. ON / OFF button green LED indicates that the instrument is ON and working. 2. ALARM button red LED indicates the presence of an alarm situation. 3. ENTER button yellow LED

Indicates that the instrument is correctly powered.



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M_Alarm160 UQQQQQQQQQQQQQQQQQQQQX R$/�� 8� R R %� SUREH IDXOW R R RU QRW FRQQHFWHG R R R [QQQQQQQQQQQQQQQQQQQQ^ M_Alarm165 UQQQQQQQQQQQQQQQQQQQQX RAL:037 U: R R %� SUREH IDXOW R R RU QRW FRQQHFWHG R R R [QQQQQQQQQQQQQQQQQQQQ^ M_Alarm170 UQQQQQQQQQQQQQQQQQQQQX R$/�� 8: R R 0DLQ SXPS R R PDLQWHQDQFH R R R [QQQQQQQQQQQQQQQQQQQQ^ M_Alarm175 UQQQQQQQQQQQQQQQQQQQQX R$/�� 8� R R Compressor 1 R R PDLQWHQDQFH R R R [QQQQQQQQQQQQQQQQQQQQ^ M_Alarm180 UQQQQQQQQQQQQQQQQQQQQX R$/�� 8� R R &RPSUHVVRU � R R PDLQWHQDQFH R R R [QQQQQQQQQQQQQQQQQQQQ^ M_Alarm195 UQQQQQQQQQQQQQQQQQQQQX R$/�� 8� R R ��N FORFN ERDUG R R fault or not R R FRQQHFWHG R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL00 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 3UREH HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL10 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 6WHS PRWRU HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL20 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R (HSURP HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL30 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R %DWWHU\ HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL40 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R High pressure mode R R IRU (;9 GULYHU R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL50 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R /RZ SUHVVXUH PRGH R R IRU (;9 GULYHU R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL60 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 6XSHU KHDW DODUP R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL70 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 9DOYH QRW FORVHG R R GXULQJ SRZHU 2)) R R R [QQQQQQQQQQQQQQQQQQQQ^

m_Drv_AL80 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R :DLWLQJ IRU YDOYH R R RSHQ UHVWDUW R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL90 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R:Diting for battery R R FKDUJHG UHVWDUW R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv_AL100 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R :DLWLQJ IRU HHSURP R R HUURU UHVWDUW R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL00 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 3UREH HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL10 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 6WHS PRWRU HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL20 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R (HSURP HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL30 UQQQQQQQQQQQQQQQQQQQQX R$L:083 Driver:4 U: R R %DWWHU\ HUURU R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL40 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R +LJK SUHVVXUH PRGH R R IRU (;9 GULYHU R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL50 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R Low pressure mode R R IRU (;9 GULYHU R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL60 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 6XSHU KHDW DODUP R R R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL70 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R 9DOYH QRW FORVHG R R during power OFF R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL80 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R :DLWLQJ IRU YDOYH R R RSHQ UHVWDUW R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL90 UQQQQQQQQQQQQQQQQQQQQX R$/�� 'ULYHU�� 8� R R:DLWLQJ IRU EDWWHU\ R R FKDUJHG UHVWDUW R R R [QQQQQQQQQQQQQQQQQQQQ^ m_Drv2_AL100 UQQQQQQQQQQQQQQQQQQQQXR$/�� 'ULYHU�� 8� R R :DLWLQJ IRU HHSURP RR HUURU UHVWDUW RR R[QQQQQQQQQQQQQQQQQQQQ^

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Date post:	26-Jul-2018
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