BrainChild C91

8/22/2019 BrainChild C91

1/78

BRAINCHILD

UM0C911A

DIN EN ISO 9001

Certificate: 01 100 98505


2/78

Warning Symbolarning Symbol

Use the Manualse the Manual

The Symbol calls attention to an operating procedure, practice, or thelike, which, if not correctly performed or adhered to, could result inpersonal injury or damage to or destruction of part or all of theproduct and system. Do not proceed beyond a warning symbol untilthe indicated conditions are fully understood and met.

Installers

System Designer

Expert User

Read Chapter 1, 2

Read All Chapters

Read Page 12

NOTE:It is strongly recommended that a process should incorporate aLIMIT CONTROL like L91 which will shut down the equipment ata preset process condition in order to preclude possibledamage to products or system.

I t is strongly recommended that a process should incorporate aLIMIT CONTROL l ike L91 which wil l shut down the equipment ata preset process condition in order to preclude possibledamage to products or system.Information in this user's manual is subject to change without notice.

Copyright April 2003, The Brainchild Corporation, all rightsreserved. No part of this publication may be reproduced, transmitted,transcribed or stored in a retrieval system, or translated into anylanguage in any form by any means without the written permission ofthe Brainchild Corporation.

a

UM0C911A2


3/78

UM0C911A 3

ContentsChapter 1 Overviewhapter 1 Overview1-1 General -------------------------51-2 Ordering Code ---------------81-3 Programming Port ------------91-4 Keys and Displays ---------101-5 Menu Overview -------------121-6 Parameter Descriptions ---13

Page No

Chapter 2 Installationhapter 2 Installation2-1 Unpaking ----------------------20

2-2 Mounting ----------------------202-3 Wiring precautions ----------222-4 Power Wiring -----------------252-5 Sensor Installation ----------

Guidlines----------------------252-6 Sensor Input Wiring --------262-7 Control Output Wiring -----262-8 Alarm Wiring -----------------302-9 Data Communication ------31

Chapter 3 Programminghapter 3 Programming3-1 Lockout -----------------------333-2 Signal Input ------------------333-3 Control Outputs --------------343-4 Alarm ---------------------------393-5 Configure Display ----------403-6 Ramp --------------------------413-7 Dwell Timer ------------------42

3-8 PV Shift -----------------------433-9 Digital Filter -------------------443-10 Failure Transfer -------------453-11 Auto-tuning ------------------463-12 Manual tuning --------------473-13 Manual Control -------------483-14 Data communication -----50

Chapter 4 Applicationshapter 4 Applications

Chapter 5 Calibration --------55hapter 5 Calibration

Chapter 6 Specifications ----60hapter 6 Specifications

Page No

4-1 Heat Only Control with --Dwell Timer ------------------51

4-2 Cool Only Control -----------524-3 Heat-Cool Control -----------53

AppendixA-1 Error Codes ------------------76A-2 Warranty ----------------------77

Chapter 7Modbus Communications---66Chapter 7Modbus Communications7-1 Functions Supported -------667-2 Exception Responses -----687-3 Parameter Table -------------697-4 Data Conversion ------------737-5 Communication Examples-73


4/78

Figures & Tablesigures & Tables Page NoFigure 1.1 Fuzzy Control Advantage ----------------------------------------------------------------6Figure 1.2 Programming Port Overview ------------------------------------------------------------9

Figure 1.4 Display of Initial Stage -------------------------------------------------------------------11Figure 2.1 Mounting Dimensions -------------------------------------------------------------------21Figure 2.2 Lead Termination for C91 and C92--------------------------------------------------23Figure 2.3 Lead Termination for C21---------------------------------------------------------------23Figure 2.4 Rear Terminal Connection for C21--------------------------------------------------23Figure 2.5 Rear Terminal Connection for C91----- --------------------------------------------24Figure 2.6 Rear Terminal Connection for C92----- --------------------------------------------24Figure 2.7 Power Supply Connections ------------------------------------------------------------25Figure 2.8 Sensor Input Wiring ----------------------------------------------------------------------26Figure 2.9 Output 1 Relay or Triac (SSR) to Drive Load ---------------------------------------26Figure 2.10 Output 1 Relay or Triac (SSR) to Drive Contactor -------------------------------27Figure 2.11 Output 1 Pulsed Voltage to Drive SSR ---------------------------------------------27

Figure 2.12 Output 1 Linear Current ---------------------------------------------------------------28Figure 2.13 Output 1 Linear Voltage ---------------------------------------------------------------28Figure 2.14 Output 2 Relay or Triac (SSR) to Drive Load -------------------------------------28Figure 2.15 Output 2 Relay or Triac (SSR) to Drive Contactor -------------------------------29Figure 2.16 Output 2 Pulsed Voltage to Drive SSR ---------------------------------------------29Figure 2.17 Output 2 Linear Current ---------------------------------------------------------------29Figure 2.18 Output 2 Linear Voltage --------------------------------------------------------------30Figure 2.19 Alarm Output to Drive Load ----------------------------------------------------------30Figure 2.20 Alarm Output to Drive Contactor ----------------------------------------------------30Figure 2.21 RS-485 Wiring ---------------------------------------------------------------------------31Figure 2.22 RS-232 Wiring ---------------------------------------------------------------------------32Figure 2.23 Configuration of RS-232 Cable ------------------------------------------------------32Figure 3.1 Conversion Curve for Linear Type Process Value ---------------------------------34Figure 3.2 Heat Only ON-OFF Control ------------------------------------------------------------35Figure 3.3 Output 2 Deviation High Alarm --------------------------------------------------------38Figure 3.4 Output 2 Process Low Alarm ----------------------------------------------------------38Figure 3.5 RAMP Function ---------------------------------------------------------------------------41Figure 3.6 Dwell Timer Function --------------------------------------------------------------------42Figure 3.7 PV Shift Application ----------------------------------------------------------------------43Figure 3.8 Filter Characteristics ---------------------------------------------------------------------44Figure 3.9 Effects of PID Adjustment -------------------------------------------------------------49Figure 4.1 Heat Control Example -------------------------------------------------------------------51Figure 4.2 Cooling Control Example ---------------------------------------------------------------52

Figure 4.3 Heat-Cool Control Example ------------------------------------------------------------53Figure 5.1 RTD Calibration ---------------------------------------------------------------------------57Figure 5.2 Cold Junction Calibration Setup ------------------------------------------------------58

Table 1.1 Display Form of Characters -------------------------------------------------------------11Table 3.1 Heat-Cool Control Setup Value ---------------------------------------------------------34Table 3.2 PID Adjustment Guide --------------------------------------------------------------------48Table A.1 Error Codes and Corrective Actions --------------------------------------------------66

Figure 1.3 Front Panel Description -----------------------------------------------------------------11

UM0C911A4


5/78

Chapter 1 Overviewhapter 1 Overview1-1 General-1 GeneralThe Fuzzy Logic plus PID microprocessor-based controller series,

incorporate a bright, easy to read 4-digit LED display, indicatingprocess value or set point value. The Fuzzy Logic technologyenables a process to reach a predetermined set point in theshortest time, with the minimum of overshoot during power-up orexternal load disturbance.

C21 is a 1/32 DIN size panel mount controller. C91 is a 1/16 DIN sizepanel mount controller. C92 is DIN rail mount controller. These units

are powered by 11-26 or 90-264 VDC/VAC supply, incorporating a 2amp. control relay output as standard. The second output can beused as cooling control, an alarm or dwell timer. Both outputs canselect triac, 5V logic output, linear current or linear voltage to driveexternal device. There are six types of alarm plus a dwell timercan be configured for the second output.The units are fullyprogrammable for PT100 and thermocouple types J,K, T, E, B, R, S,N, L with no need to modify the unit. The input signal is digitized by

using a 18-bit A to D converter. Its fast sampling rate allows the unitto control fast processes.

Digital communications RS-485 or RS-232 ( for C21, C91) areavailable as an additional option. These options allow the units to beintegrated with supervisory control system and software.

A programming port is available for automatic configuration,calibration and testing without the need to access the keys on front

panel.

By using proprietary Fuzzy modified PID technology, the controlloop will minimize the overshoot and undershoot in a shortesttime. The following diagram is a comparison of results with andwithout Fuzzy technology.

UM0C911A 5


6/78

UM0C911A6

PID control with properly tuned

PID + Fuzzy control

Warm Up Load Disturbance

Setpoint

Temperature

Time

High Accuracyigh AccuracyThe series are manufactured with custom designed ASIC(ApplicationSpecific Integrated Circuit ) technology which contains a 18-bit A toD converter for high resolution measurement ( true 0.1 F resolutionfor thermocouple and PT100 ) and a 15-bit D to A converter for linearcurrent or voltage control output. The ASIC technology providesimproved operating performance, low cost, enhanced reliability andhigher density.

B

Fast Sampling Rateast Sampling RateThe sampling rate of the input A to D converter reaches 5 times/second.The fast sampling rate allows this series to control fast processes.

Fuzzy Controluzzy ControlThe function of Fuzzy control is to adjust PID parameters from time totime in order to make manipulation output value more flexible andadaptive to various processes. The results is to enable a process to

reach a predetermined set point in the shortest time, with the minimumof overshoot and undershoot during power-up or external loaddisturbance.

Digital Communicationigital CommunicationThe units are equipped with RS-485 or RS-232 interface card toprovide digital communication. By using the twisted pair wires thereare at most 247 units can be connected together via RS-485 interfaceto a host computer.

Figure 1.1Fuzzy ControlAdvantage

Figure 1.1Fuzzy ControlAdvantage


7/78

Programming Portrogramming PortA programming port is used to connect the unit to a hand-heldprogrammer or a PC for quick configuration, also can be connectedto an ATE system for automatic testing & calibration.

Auto-tuneThe auto-tune function allows the user to simplify initial setup for anew system. A clever algorithm is provided to obtain an optimal setof control parameters for the process, and it can be applied either asthe process is warming up ( cold start ) or as the process has beenin steady state ( warm start ).

Lockout Protectionockout ProtectionAccording to actual security requirement, one of four lockout levelscan be selected to prevent the unit from being changed abnormally.

Bumpless Transferumpless TransferBumpless transfer allows the controller to continue to control byusing its previous value as the sensor breaks. Hence, the processcan be well controlled temporarily as if the sensor is normal.

Soft-start Rampoft-start RampThe ramping function is performed during power up as well as anytime the set point is changed. It can be ramping up or rampingdown. The process value will reach the set point with a predeterminedconstant rate.

Digital Filterigital FilterA first order low pass filter with a programmable time constant is used

to improve the stability of process value. This is particularly useful incertain application where the process value is too unstable to be read.

UM0C911A 7


8/78

UM0C911A8

Power Inputower Input4: 90 - 264 VAC, 50/60 HZ5: 11 - 26 VAC or VDC9: Special Order

4: 90 - 264 VAC, 50/60 HZ5: 11 - 26 VAC or VDC9: Special Order

0: None1: RS-485 interface (for C21, C92)2: RS-232 interface (for C21, C92)9: Special order

0: None1: RS-485 interface (for C21, C92)2: RS-232 interface (for C21, C92)9: Special order

Communications

1: Standard InputThermocouple: J, K, T, E, B,

R, S, N, LRTD: PT100 DIN, PT100 JIS

9: Special Order

1: Standard InputThermocouple: J, K, T, E, B,R, S, N, LRTD: PT100 DIN, PT100 JIS9: Special Order

Signal Inputignal Input

0: None1: Relay rated 2A/240VAC2: Pulsed voltage to drive SSR,

5V/30mA3: Isolated 4 - 20mA / 0 - 20mA4: Isolated 1 - 5V / 0 - 5V5: Isolated 0 - 10V6: Triac output 1A / 240VAC,SSR9: Special order

0: None1: Relay rated 2A/240VAC2: Pulsed voltage to drive SSR,5V/30mA3: Isolated 4 - 20mA / 0 - 20mA4: Isolated 1 - 5V / 0 - 5V5: Isolated 0 - 10V6: Triac output 1A / 240VAC,SSR9: Special order

Output 1utput 1

C21-C91-

C92-

C21-C91-C92-

0: None1: Form A relay 2A/240VAC2: Pulsed voltage to

drive SSR, 5V / 30mA3: Isolated 4 - 20mA / 0 - 20mA4: Isolated 1 - 5V / 0 - 5V5: Isolated 0 - 10V6: Triac output, 1A / 240VAC, SSR7: Isolated 20V/25mA transducer power

supply8: Isolated 12V/40mA transducer power

supply9: Isolated 5V/80mA transducer power

supplyA: RS-485 interface (for C91)B: Special order

0: None1: Form A relay 2A/240VAC2: Pulsed voltage todrive SSR, 5V / 30mA3: Isolated 4 - 20mA / 0 - 20mA4: Isolated 1 - 5V / 0 - 5V5: Isolated 0 - 10V6: Triac output, 1A / 240VAC, SSR7: Isolated 20V/25mA transducer powersupply8: Isolated 12V/40mA transducer powersupply9: Isolated 5V/80mA transducer powersupplyA: RS-485 interface (for C91)B: Special order

Output 2utput 2

OM94-6 = Isolated 1A / 240VACTriac Output Module ( SSR )

OM96-3 = Isolated 4 - 20 mA /0 - 20 mA Analog Output

ModuleOM96-4 = Isolated 1 - 5V / 0 - 5V

Analog Output ModuleOM96-5 =Isolated 0 -10V Analog

Output ModuleCM94-1 = Isolated RS-485

Interface Module forC21, C92.

CM94-2 = Isolated RS-232Interface Module forC21, C92

CM96-1 = Isolated RS-485Interface Module forC91

DC94-1 = Isolated 20V/25mA DCOutput Power Supply

DC94-2 = Isolated 12V/40mADC Output Power Supply

DC94-3 = Isolated 5V/80mA DC

Output Power SupplyCC94-1 = RS-232 InterfaceCable ( 2M )

OM94-6 = Isolated 1A / 240VACTriac Output Module ( SSR )OM96-3 = Isolated 4 - 20 mA /0 - 20 mA Analog OutputModuleOM96-4 = Isolated 1 - 5V / 0 - 5VAnalog Output ModuleOM96-5 =Isolated 0 -10V AnalogOutput ModuleCM94-1 = Isolated RS-485Interface Module forC21, C92.CM94-2 = Isolated RS-232Interface Module forC21, C92CM96-1 = Isolated RS-485Interface Module forC91DC94-1 = Isolated 20V/25mA DCOutput Power SupplyDC94-2 = Isolated 12V/40mADCOutput Power SupplyDC94-3 = Isolated 5V/80mA DC

Output Power SupplyCC94-1 = RS-232 InterfaceCable ( 2M )

Accessor ies

SNA10B = Smart NetworkAdaptor for BC-Net

software, which converts255 channels of RS-485 orRS-422 to RS-232 network.

SNA10B= Smart NetworkAdaptor for BC-Netsoftware, which converts255 channels of RS-485 orRS-422 to RS-232 network.

SNA10A = Smart NetworkAdaptor for third party

software, which converts255 channels of RS-485 or

RS-422 to RS-232 Network.

SNA10A= Smart NetworkAdaptor for third partysoftware, which converts255 channels of RS-485 orRS-422 to RS-232 Network.

Related Productse l ated P roduc ts

1-2 Ordering Code-2 Ordering Code

0: Red color1: Green color0: Red color1: Green color

Display Colorisplay Color


9/78

1-3 Programming Port-3 Programming Port

Figure 1.2 Programming Port Overviewigure 1.2 Programming Port Overview

A special connector can be used to touch the programming portwhich is connected to a PC for automatic configuration, also can beconnected to an ATE system for automatic calibration and testing.

The programming port is used for off-line automatic setup and testingprocedures only. Don't attempt to make any connection to these pinswhen the unit is used for a normal control purpose.

UM0C911A 9

FrontPanel

RearTerminal

Access Hole

1

34

6

2

5C21

Open the housingTop view of C91

CONT

ROLLER

C92

BRAIN

CHILD

C92

ProgrammingPort

pin 1

Programming Portcontrol board

Power board

pin 1


10/78

1- 4 Keys and Displays- 4 Keys and DisplaysKEYPAD OPERATIONEYPAD OPERATIONSCROLL KEY :

UP KEY :

DOWN KEY :

RESET KEY :

ENTER KEY :

This key is used to select a parameter to be viewed or adjusted.

This key is used to increase the value of selected parameter.

This key is used to decrease the value of selected parameter.

This key is used to:1. Revert the display to display the process value or set point value

(if DISP is set with SP1 for C21).2. Reset the latching alarm, once the alarm condition is

removed.3. Stop the manual control mode , auto-tuning mode and calibration

mode.4. Clear the message of communication error and auto-tuning error.5. Restart the dwell timer when the dwell timer has been time out.6. Enter the manual control menu during failure mode occurs.

Press for 3 seconds or longer .Press for 3 seconds to:1. Ener setup menu. The display shows .2. Enter manual control mode during manual control mode

or is selected.3. Enter auto-tuning mode during auto-tuning mode AT(for C91, C92)

or (for C21) is selected.4. Perform calibration to a selected parameter during the

calibration procedure.Press for 4.2 seconds to select calibration mode.

SCROLL KEY :

UP KEY :

DOWN KEY :

RESET KEY :

ENTER KEY :

R

UM0C911A10

press for C91 and C92, press for C21ress for C91 and C92, press for C21


11/78

: Confused CharacterConfused Character

Table 1.1 Display Form of Charactersable 1.1 Display Form of CharactersA E I N S X

B F J O T Y

C G K P U Z

c H L Q V ?

D h M R W =

Figure 1.3 Front Panel Descriptionigure 1.3 Front Panel Description

UM0C911A 11

The left diagram shows program no. 34for C91 with version 16.The program no. for C21 is 33,and for C92 is 35.

Display program code of the productfor 2.5 seconds.

Figure 1.4Display of Initial StageFigure 1.4Display of Initial Stage

PV MAN ATP2P1

F

C9 1

OP 1 OP2

R

Output 2IndicatorOutput 2IndicatorOutput 1IndicatorOutput 1Indicator

3 Silicone Rubber Buttonsfor ease of control setup

and set point adjustment.

3 Silicone Rubber Buttonsfor ease of control setupand set point adjustment.

C21

O1

O2

C

4 Buttons for ease ofcontrol setup andset point adjustment.

Output 2Indicator Process Unit Indicator

Manual Mode Indicator

Auto-tuning IndicatorV MAN ATP2P1

F

C9 1

OP 1 OP2

R

Output 1Indicator

Deviation Indicator


12/78

1- 5 Menu Overview- 5 Menu Overview

SP1

SP2

PV

ADLO

ADHI

RTDL

CJLO

RTDH

CJHI

5.4 sec.

User menu *1ser menu *1 Setup menu*1etup menu*1 Calibration Modealibration Mode

Press for3 seconds to

perform calibration.

UM0C911A

*2

H

C

PV

Apply these modes willbreak the control loopand change some of theprevious setting data.Make sure that if thesystem is allowable toapply these modes.

The flow chart shows acomplete listing of allparameters. For actualapplication the number ofavailable parametersdepends on setupconditions, and should beless than that shown inthe flow chart.

Release , pressagain for 2 seconds orlonger (but not longerthan 3 seconds), thenrelease to enter thecalibration menu.

*1:

*2:

2 sec.

LOCK

INPT

UNIT

DP

INLO

SP1L

INHI

SP1H

SHIF

FILT

DISP

OUT1

O1TY

O1FT

O1HY

CYC1

PB

TI

TD

OFST

RAMP

RR

OUT2

O2TY

O2FT

O2HY

CYC2

CPB

DB

ALMD

COMM

ADDR

BAUD

DATA

PARI

STOP

SEL1

SEL2

SEL3

SEL4

SEL5

SEL6

SEL7

SEL8

4.2 sec.

Value

Value

Value

Value

3 sec. ManualModeManualModeManualModeManualModeAuto-tuningModeAuto-tuningMode

PV

SP1

SP2

MAN

AT

MAN

C91C92C91C92

User Menu *1ser Menu *1(DISP=PV) (DISP=SP1)

SP1

SP2

H

C

A-T

ManualModeManualMode

3 sec. Auto-tuningModeAuto-tuningMode21

orPV SP1

Value

or PV Value

ManualModeManualMode3 sec.

3 sec.

3 sec.

3 sec.

INPT

UNIT

DPPB

TI

TD

CYC1

ADDR

Value

Value

INPT

UNIT

DP

PB

TI

TD

CYC1

ADDR

Value

Value

12

3 sec.


13/78

1-6 Parameter Descriptions-6 Parameter DescriptionsParameterNotation

DefaultValue

Select parameters to belocked

0 : No parameteris locked

1 : Setup data arelocked

2 : Setup data andUser data except Set

point are locked3 : All data are locked

LOCK 0

Parameter Description Range

0

1

2

3

4

5

6

:

:

:

:

:

:

:

T type thermocouple

E type thermocouple

B type thermocouple

R type thermocouple

S type thermocouple

J type thermocouple

K type thermocouple

7

13

8

14

9

10

11

12

N type thermocouple

L type thermocouple

PT 100 ohms DINcurve

PT 100 ohms JIScurve

4 - 20 mA linearcurrent input

0 - 20 mA linearcurrent input

0 - 1V linear voltageinput

:

:

:

:

:

:

:

: 0 - 60 mV linearmillivolt input

INPT Input sensor selection

UM0C911A 13

1(0)

SP2

Set point for output 2when output 2 performsalarm function or dwelltimer

Low: -19999 High :45536 10.0 C(18.0 F)B

B

SP1 Set point for output 1 Low: SP1L High :SP1H25.0 C

(77.0 F)

B

B

15

16

17




:

:

:


14/78

ParameterNotation

DefaultValue


UNIT Input unit selection

0

1

2

:

:

:

Degree C unit

Degree F unit

Process unit

0

(1)

DP Decimal point selection

0

1

2

3

1

:

:

:

:

No decimalpoint

1 decimal digit

2 decimal digits

3 decimal digits

INLO

INHI

Input low sale value

Input high scale value

-19999

INLO+50

45486

45536

Low:

Low:

High:

High:

-17.8 C( 0 F )

L

L

SHIF PV shift (offset) value-200.0 C

(-360.0 F)

L

L0.0Low:

200.0 C

( 360.0 F)

L

LHigh:

93.3 C(200.0 F)

L

L

0

1

2

3

4

5

6

7

8

9

FILT Filter damping timeconstant of PV

0 second timeconstant

0.2 second timeconstant

0.5 second timeconstant

1 second timeconstant

2 seconds time

constant5 seconds timeconstant

10 seconds timeconstant




:

:

:

:

:

:

:

:

:

:

2

UM0C911A14

SP1L Low limit of set pointvalue

-19999 High:-17.8 C

(0 F)L

L

SP1HHigh limit of set pointvalue SP1L

High: 537.8 C(1000 F)

L

L

45536Low:

45536Low:


15/78

ParameterNotation

DefaultValue


0O1TY Output 1 signal type

: Relay output

: Solid state relaydrive output

: Solid state relayoutput

: 4-20 mA currentmodule

0

1

2

3

4

5

6

7

0 - 20 mA currentmodule

0 - 1V voltagemodule



8 0 - 10V voltagemodule

:

:

:

:

:

O1FTOutput 1 failure transfermode

Select BPLS ( bumpless

transfer ) or 0.0 ~ 100.0 % tocontinue output 1 controlfunction as the unit fails, orselect OFF (0) or ON (1)for ON-OFF control.

0

O1HYOutput 1 ON-OFF controlhysteresis

Low: 0.1 High: 50.0 C(90.0 F)B B0.1 C

(0.2 F)L

L

CYC1 Output 1 cycle time Low: 0.1 High: 90.0 sec. 18.0

PB Proportional band value10.0 C

(18.0 F)L

LLow: 0

500.0 C(900.0 F)

L

LHigh:

TI

TD

Integral time value

Derivative time value

0

0

100

25.0

Low:

Low:

1000 sec

360.0 sec

High:

High:

OFST Offset value for P control Low: 0 High: 100.0 % 25.0

UM0C911A 15

Output 1 function 0OUT1

0

1

Reverse (heating )control action

Direct (cooling)

control action

:

:

DISP Normal display selection

: Display processvalue normally

0

: Display set point 1value normally1

0


16/78

RR Ramp rate 0.0Low: 0500.0 C

(900.0 F)L

LHigh:

ParameterNotation

DefaultValue


OUT2 Output 2 function

0 : Output 2 No Function

2 : Deviation High Alarm

3 : Deviation Low Alarm

6 : Process High Alarm

7 : Process Low Alarm

8 : Cooling PID Function

2

O2TY Output 2 signal type 0

0

1

2

3

Relay output

Solid state relaydrive output

Solid state relayoutput


:

:

:

:

4

5

6

7



0 - 5V voltage

module1 - 5V voltagemodule

8 0 - 10V voltagemodule

:

:

::

:

O2FT

Select BPLS ( bumpless transfer )or 0.0 ~ 100.0 % to continueoutput 2 control function as theunit fails, or select ON (0) orOFF (1) for alarm and dwell timerfunction.

Output 2 failuretransfer mode

0

UM0C911A16

RAMPRamp function

selection

0 : No Ramp Function

2 : Use unit/hour asRamp Rate

1 : Use unit/minute asRamp Rate 0

1 : Dwell timer action

4 : Deviation band out ofband Alarm

5 : Deviation band inband Alarm


17/78

ParameterNotation

DefaultValue


ALMD Alarm operation mode

:

:

:

:

1

2

3

0 Normal alarmaction

Latching alarmaction

Hold alarm action

Latching &action

Hold

0

COMMCommunicationfunction

0 : No communication

1 : Modbus RTU modeprotocol

1

UM0C911A 17

Heating-cooling deadband (negative value=overlap)

0Low: -36.0 High: 36.0 %DB

CPB Cooling proportionalband value 100Low: 50High: 300 %

CYC2 Output 2 cycle time Low: 0.1 High: 90.0 sec. 18.0

O2HY

Output 2 hysteresisvalue when output 2performs alarm

function

Low: 0.1 High:50.0 C

(90.0 F)L

L

0.1 C(0.2 F)

L

L

BAUD

:

:

:

:

:

:

:

Baud rate of digitalcommunication 2

0

1

2

3

4

5

6

2.4 Kbits/s baud rate







ADDR Address assignment ofdigital communication Low: 1 High: 255


18/78

ParameterNotation

DefaultValue


DATAData bit count of digitalcommunication

0 : 7 data bits

1 : 8 data bits1

PARIParity bit of digitalcommunication

0 : Even parity

1 : Odd parity

2 : No parity bit

0

STOPStop bit count of digitalcommunication

0 : One stop bit

1 : Two stop bits0

UM0C911A18

SEL1Select 1'st parameter foruser menu

:0

1

2

3

5

6

No parameter selected

2

:LOCK is put ahead

:INPT is put ahead

:UNIT is put ahead

:SHIF is put ahead

7

:PB is put ahead

:TI is put ahead

4 :DP is put ahead

16

10

11

12

13

14

15

8

9

17

:TD is put ahead

: OFST is put ahead

:RR is put ahead

:O2HY is put ahead

:CYC2 is put ahead

:CPB is put ahead

:DB is put ahead

:ADDR is put ahead

: O1HY is put ahead

: CYC1 is put ahead


19/78

ParameterNotation

DefaultValue


SEL2Select 2'nd parameterfor user menu

3Same as SEL1

SEL3 Select 3'rd parameterfor user menu 4Same as SEL1

SEL4Select 4'th parameterfor user menu

6Same as SEL1


7Same as SEL1


8Same as SEL1


10Same as SEL1

SEL8 Select 8'th parameterfor user menu

17Same as SEL1

UM0C911A 19


20/78

Chapter 2 Instal lationhapter 2 Instal la tionDangerous voltages capable of causing death are sometimes

present in this instrument. Before installation or beginning any

troubleshooting procedures the power to all equipment must beswitched off and isolated. Units suspected of being faulty must bedisconnected and removed to a properly equipped workshop fortesting and repair. Component replacement and internaladjustments must be made by a qualified maintenance person only.

Dangerous voltages capable of causing death are sometimespresent in this instrument. Before installation or beginning anytroubleshooting procedures the power to all equipment must beswitched off and isolated. Units suspected of being faulty must bedisconnected and removed to a properly equipped workshop fortesting and repair. Component replacement and internaladjustments must be made by a qualified maintenance person only.

To minimize the possibility of fire or shock hazards, do notexpose this instrument to rain or excessive moisture.

To minimize the possibility of fire or shock hazards, do notexpose this instrument to rain or excessive moisture.Do not use this instrument in areas under hazardous

conditions such as excessive shock, vibration, dirt, moisture,corrosive gases or oil. The ambient temperature of the areas shouldnot exceed the maximum rating specified in Chapter 6.

Do not use this instrument in areas under hazardousconditions such as excessive shock, vibration, dirt, moisture,corrosive gases or oil. The ambient temperature of the areas shouldnot exceed the maximum rating specified in Chapter 6.

2-2 Mounting-2 Mounting

2-1 Unpacking-1 UnpackingUpon receipt of the shipment remove the unit from the carton andinspect the unit for shipping damage.

If any damage due to transit , report and claim with the carrier.Write down the model number, serial number, and date code forfuture reference when corresponding with our service center. Theserial number (S/N) and date code (D/C) are labeled on the box andthe housing of control.

Upon receipt of the shipment remove the unit from the carton andinspect the unit for shipping damage.If any damage due to transit , report and claim with the carrier.Write down the model number, serial number, and date code forfuture reference when corresponding with our service center. Theserial number (S/N) and date code (D/C) are labeled on the box andthe housing of control.

Make panel cutout to dimension shown in Figure 2.1.ake panel cutout to dimension shown in Figure 2.1.Take the mounting clamp away and insert the cont roller into

panel cutout. Install the mounting clamp back.

Take the mounting clamp away and insert the control ler intopanel cutout. Install the mounting clamp back.

UM0C911A20


21/78

C21

C91

C92

Figure 2.1 Mounting Dimensionsigure 2.1 Mounting Dimensions

98.0mm

Panel

10.0mm

12.5mm

SCREW

MOUNTINGCLAMP

22.2+0.3

45 +0.5_ 0

_0

Panel

86 mm

94 mm

45 mm

45mm

CONTROLLER

BRAINCHILD

C92

OP2

SP1

OP1

PV SP2

LC

MAN

LF

AT

44.8mm

91.8mm

126.9mm

17.6

17.8

35.4

UM0C911A 21


22/78

2 - 3 Wiring Precautions- 3 Wiring PrecautionsBefore wiring, verify the label for correct model number andoptions. Switch off the power while checking.

Care must be taken to ensure that maximum voltage ratingspecified on the label are not exceeded.

It is recommended that power of these units to be protected byfuses or circuit breakers rated at the minimum value possible.

All units should be installed inside a suitably grounded metalenclosure to prevent live parts being accessible from humanhands and metal tools.

All wiring must conform to appropriate standards of good practiceand local codes and regulations. Wiring must be suitable forvoltage, current, and temperature rating of the system.

Beware not to over-tighten the terminal screws.

Unused control terminals should not be used as jumper points asthey may be internally connected, causing damage to the unit.

Verify that the ratings of the output devices and the inputs asspecified in Chapter 6 are not exceeded.

Before wiring, verify the label for correct model number andoptions. Switch off the power while checking.Care must be taken to ensure that maximum voltage ratingspecified on the label are not exceeded.It is recommended that power of these units to be protected byfuses or circuit breakers rated at the minimum value possible.All units should be installed inside a suitably grounded metalenclosure to prevent live parts being accessible from humanhands and metal tools.All wiring must conform to appropriate standards of good practiceand local codes and regulations. Wiring must be suitable forvoltage, current, and temperature rating of the system.Beware not to over-tighten the terminal screws.Unused control terminals should not be used as jumper points asthey may be internally connected, causing damage to the unit.Verify that the ratings of the output devices and the inputs asspecified in Chapter 6 are not exceeded.

*

***

*

**

*

UM0C911A22


23/78

Figure 2.3Lead Terminationfor C21

Figure 2.3Lead Terminationfor C21

7.0mm max.3.2mm min.

Figure 2.4Rear Terminal Connectionfor C21


Figure 2.2Lead Termination for

C91 and C92

Figure 2.2Lead Termination forC91 and C92

4.5 ~7.0 mm0.18" ~0.27"

2.0mm

0.08" max.

++ _

RT DA

+

+

COMTC+

_B

PTB

B

PTA TXD RXD

90-264 VAC

47-63 Hz,10VA

OP2

2A/240 VAC 2A/240 VAC

L N

OP1

CAT. I I

1

8 9 10 11 12 13 14

2 3 4 5 76

I

V

V+,mA+

PTB

_TCV ,mA_ _

TX1 TX2

RS-485

RS-232

_

UM0C911A 23


24/78

Figure 2.5

Rear Terminal Connectionfor C91


Figure 2.6Rear Terminal Connection for C92Figure 2.6Rear Terminal Connection for C92

90-264VAC

47-63Hz10VA

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

TX1TXDTX2RXD

CNO

RS-232

LN

POWER IN

AB RTDB

COM

OP2

+

+

RAIN+ININPUT

+ TC

V++

CAT. I IAT. I I

OP1

V

mA

RS-485

UM0C911A24

12345

TX2

TX1

VI

RTD

A

B

B

++

PTA

TC+

TC

6789

10

L

N

NC

NO

C2A240 VAC

+

OP2

OP1

2A240 VAC

CAT. I I

90-264VAC47-63Hz10VA

+


25/78

2 - 4 Power Wiring- 4 Power WiringThe controller is supplied to operate at 11-26 VAC / VDC or 90-264VAC. Check that the installation voltage corresponds with the power

rating indicated on the product label before connecting power to

the controller.

The controller is supplied to operate at 11-26 VAC / VDC or 90-264VAC. Check that the installation voltage corresponds with the powerrating indicated on the product label before connecting power tothe controller.

90 264 VAC or11 26 VAC / VDC~

~

Fuse

Figure 2.7 Power Supply Connectionsigure 2.7 Power Supply Connections

This equipment is designed for installation in an enclosurewhich provides adequate protection against electric shock. Theenclosure must be connected to earth ground.

Local requirements regarding electrical installation should be rigidlyobserved. Consideration should be given to prevent from

unauthorized person access to the power terminals.

This equipment is designed for installation in an enclosurewhich provides adequate protection against electric shock. Theenclosure must be connected to earth ground.Local requirements regarding electrical installation should be rigidlyobserved. Consideration should be given to prevent fromunauthorized person access to the power terminals.

1

2

L

N

20

19

2-5 Sensor Installation Guidelines-5 Sensor Installation GuidelinesProper sensor installation can eliminate many problems in a controlsystem. The probe should be placed so that it can detect anytemperature change with minimal thermal lag. In a process thatrequires fairly constant heat output, the probe should be placed

closed to the heater. In a process where the heat demand is variable,the probe should be closed to the work area. Some experiments withprobe location are often required to find this optimum position.

In a liquid process, addition of a stirrer will help to eliminate thermallag. Since the thermocouple is basically a point measuring device,placing more than one thermocouple in parallel can provide anaverage temperature readout and produce better results in mostair heated processes.

Proper sensor installation can eliminate many problems in a controlsystem. The probe should be placed so that it can detect anytemperature change with minimal thermal lag. In a process thatrequires fairly constant heat output, the probe should be placedclosed to the heater. In a process where the heat demand is variable,the probe should be closed to the work area. Some experiments withprobe location are often required to find this optimum position.In a liquid process, addition of a stirrer will help to eliminate thermallag. Since the thermocouple is basically a point measuring device,placing more than one thermocouple in parallel can provide anaverage temperature readout and produce better results in mostair heated processes.

C21 C926

7

C91

UM0C911A 25


26/78

Proper sensor type is also a very important factor to obtain precisemeasurements. The sensor must have the correct temperature rangeto meet the process requirements. In special processes the sensormight need to have different requirements such as leak-proof, anti-vibration, antiseptic, etc.

Standard sensor limits of error are 4 degrees F ( 2 degrees C )or 0.75% of sensed temperature (half that for special ) plus driftcaused by improper protection or an over-temperature occurrence.This error is far greater than controller error and cannot be correctedon the sensor except by proper selection and replacement.

A A

Proper sensor type is also a very important factor to obtain precisemeasurements. The sensor must have the correct temperature rangeto meet the process requirements. In special processes the sensormight need to have different requirements such as leak-proof, anti-vibration, antiseptic, etc.Standard sensor limits of error are 4 degrees F ( 2 degrees C )or 0.75% of sensed temperature (half that for special ) plus driftcaused by improper protection or an over-temperature occurrence.This error is far greater than controller error and cannot be correctedon the sensor except by proper selection and replacement.

A A

2-6 Sensor Input Wiring-6 Sensor Input Wiring

8 3 18

9 4 17

10 5 16

PTATC+, V+PTB, mA+TC+, V+PTB, mA+TC-, V-PTB, mA-TC-, V-PTB, mA- B

B

ARTD

_ _

+ +

V _+

TC V mA RTDFigure 2.8 Sensor Input Wiringigure 2.8 Sensor Input Wiring

2-7 Control Output Wiring-7 Control Output Wiring

56

109

1514_

+

LOAD 120V/240VACMains Supply120V/240VACMains Supply

Figure 2.9Output 1 Relay or Triac (SSR) to Drive LoadFigure 2.9Output 1 Relay or Triac (SSR) to Drive Load

C21 C91 C92

C21 C91 C92

UM0C911A26


27/78

120V /240V

Mains Supply

120V /240VMains Supply

No FuseBreakerNo FuseBreaker

ThreePhaseHeaterPower

ThreePhaseHeaterPowerThree PhaseDeltaHeater

Load

Three PhaseDeltaHeaterLoad

Contactor

5

6

10

9

15

14_

+

Figure 2.10Output 1 Relay or Triac (SSR) to Drive ContactorFigure 2.10Output 1 Relay or Triac (SSR) to Drive Contactor

Load120V /240V

Mains Supply


SSR

30mA / 5VPulsed

Volt ag e

30mA / 5VPulsedVoltage

Internal Circuitnternal Circuit

+

5V

0V

33

33

_

+

Figure 2.11 Output 1 Pulsed Voltage to Drive SSRigure 2.11 Output 1 Pulsed Voltage to Drive SSR

+

_

C21 C91 C92

5

6

10

9

15

14

C21 C91 C92

UM0C911A 27


28/78

0 - 1V, 0 - 5V1 - 5V, 0 - 10V0 - 1V, 0 - 5V1 - 5V, 0 - 10V

Maximum Load500 ohmsMaximum Load500 ohms

Minimum Load10 K ohmsMinimum Load10 K ohms

0 - 20mA,4 - 20mA0 - 20mA,4 - 20mA _

+

Load

_

+

Load

Figure 2.12 Output 1 Linear Currentigure 2.12 Output 1 Linear Current

Figure 2.13 Output 1 Linear Voltageigure 2.13 Output 1 Linear Voltage

_

+


Figure 2.14Output 2 Relay or Triac (SSR) to Drive LoadFigure 2.14Output 2 Relay or Triac (SSR) to Drive Load

56

109

1514

C21 C91 C92

5

6

10

9

15

14

C21 C91 C92

3

4

2

1

7

6

C21 C91 C92

UM0C911A28


29/78

120V /240V

Mains Supply120V /240VMains Supply



ThreePhaseHeaterPowerThree PhaseDeltaHeaterLoad

Three PhaseDeltaHeaterLoadContactor

Figure 2.15Output 2 Relay or Triac (SSR) to Drive ContactorFigure 2.15Output 2 Relay or Triac (SSR) to Drive Contactor

Load120V /240V

Mains Supply120V /240VMains Supply

SSR

30mA / 5VPulsed

Volt ag e

30mA / 5VPulsedVoltage

Internal Circuitnternal Circuit

+

5V

0V

33

33

_

+

Figure 2.16 Output 2 Pulsed Voltage to Drive SSRigure 2.16 Output 2 Pulsed Voltage to Drive SSR

+

_

Maximum Load500 ohmsMaximum Load500 ohms0 - 20mA,4 - 20mA0 - 20mA,4 - 20mA _

+

Load

Figure 2.17 Output 2 Linear Currentigure 2.17 Output 2 Linear Current

_

+

3

4

2

1

7

6

C21 C91 C92

_

+

3

4

2

1

7

6

C21 C91 C92

_

+

3

4

2

1

7

6

C21 C91 C92

UM0C911A 29


30/78

0 - 1V, 0 - 5V

1 - 5V, 0 - 10V

0 - 1V, 0 - 5V1 - 5V, 0 - 10V

Minimum Load

10 K ohms

Minimum Load10 K ohms_

+

Load

Figure 2.18 Output 2 Linear Voltageigure 2.18 Output 2 Linear Voltage

2-8 Alarm Wiring-8 Alarm Wiring


Figure 2.19 Alarm Output to Drive Loadigure 2.19 Alarm Output to Drive Load

Relay Output toDrive ContactorRelay Output toDrive Contactor

120V /240V

Mains Supply



ThreePhase

HeaterPower


Three PhaseDeltaHeaterLoad

Three PhaseDeltaHeaterLoadContactor

Figure 2.20 Alarm Output to Drive Contactorigure 2.20 Alarm Output to Drive Contactor

3

4

2

1

7

6

C21 C91 C92

3

4

2

1

7

6

C21 C91 C92

3

4

2

1

7

6

C21 C91 C92

UM0C911A30


31/78

2-9 Data Communication-9 Data Communication

TX1

TX1

TX1

TX1

TX2

TX2

TX2

TX2Terminator220 ohms / 0.5WTerminator220 ohms / 0.5W

Max. 247 units can be linkedax. 247 units can be linked

RS-232PC

SNA10A orSNA10BSNA10A orSNA10B

RS-485 to RS-232

network adaptor

RS-485 to RS-232network adaptor

Twisted-Pair Wirewisted-Pair Wire

Figure 2.21 RS-485 Wiringigure 2.21 RS-485 Wiring

12

13

2

1

10

9

C21 C91 C92 TX1TX2

TX1TX2

12

13 21 109

C21 C91 C92

TX1TX2

12

13

2

1

10

9

C21 C91 C92

UM0C911A 31


32/78

RS-232

PC

9-pinRS-232port

9-pinRS-232port

Figure 2.22RS-232 WiringFigure 2.22RS-232 Wiring

CC94-1

10

9

8

TXD

RXD

COM

If you use a conventional 9-pin RS-232 cable instead of CC94-1, the cable

must be modified according to the following circuit diagram.

If you use a conventional 9-pin RS-232 cable instead of CC94-1, the cablemust be modified according to the following circuit diagram.

1

2

3

4

5

6

7

8

9

TX1 RD

TX2 TD

COMGND

Female DB-9emale DB-9

To DTE ( PC ) RS-232 Porto DTE ( PC ) RS-232 Port

1 DCD2 RD3 TD4 DTR

5 GND6 DSR7 RTS8 CTS9 RI

1 DCD2 RD3 TD4 DTR5 GND6 DSR7 RTS8 CTS9 RI

Figure 2.23Configuration of RS-232 CableFigure 2.23Configuration of RS-232 Cable

C21 C9212

13

11

10

9

8

TXD

RXD

COM

C21 C9212

13

11

UM0C911A32


33/78

Chapter 3 Programminghapter 3 Programming

3-1 Lockout-1 Lockout

Press for 3 seconds and release to enter setup menu. Pressto select the desired parameter. The display indicates the parameter

symbol. Press or to view or adjust the value of the selectedparameter.

There are four security levels can be selected by using LOCKparameter.

If is selected for LOCK, then no parameter is locked.If is selected for LOCK, then all setup data are locked.If is selected for LOCK, then all setup data as well as user data(refer to ) except set point are locked to prevent from beingchanged.If is selected for LOCK, then all parameters are locked to preventfrom being changed.

NONESETUSER

section 1-5

ALL

NONESETUSER section 1-5ALL

3-2 Signal Input-2 Signal InputINPT:

Range:

UNIT:Range:

DP:Range:

INLO:

Selects the sensor type or signal type for signal input.( thermocouple ) J_TC, K_TC, T_TC, E_TC, B_TC, R_TC

S_TC, N_TC, L_TC( RTD ) PT.DN, PT.JS(linear ) 4-20, 0-20, 0-60, 0-1V, 0-5V, 1-5V, 0-10

Selects the process unitC, F, PU( process unit ). If the unit is neither C nor F,

then selects PU.Selects the resolution of process value.

( for T/C and RTD ) NO.DP, 1-DP(for linear ) NO.DP, 1-DP, 2-DP, 3-DP

L L L L

Selects the low scale value for the linear type input.INHI : Selects the high scale value for the linear type input.

INPT: Range:

UNIT: Range:DP: Range:INLO:INHI :How to use INLO and INHI :ow to use INLO and INHI :If 4 - 20 mA is selected for INPT,let SL specifies the input signal low (ie. 4 mA ), SH specifies the input signal high ( ie. 20 mA ), S specifiesthe current input signal value, the conversion curve of the processvalue is shown as follows :

UM0C911A 33


34/78

INHI

process value

PV

INLO

SL SHSinput signal

Figure 3.1

Conversion Curve forLinear Type Process Value

Figure 3.1Conversion Curve forLinear Type Process Value

Formula : PV = INLO + ( INHI INLO )ormula : PV = INLO + ( INHI INLO ) S SLSLSH SLH SL

Example : A 4-20 mA current loop pressure transducer with range

0 - 15 kg/cm is connected to input, then perform the

following setup :

Example : A 4-20 mA current loop pressure transducer with range0 - 15 kg/cm is connected to input, then perform thefollowing setup :

2

INPT = 4 - 20 INLO = 0.00INHI = 15.00 DP = 2-DPOf course, you may select other value for DP to alter theresolution.

INPT = 4 - 20 INLO = 0.00INHI = 15.00 DP = 2-DPOf course, you may select other value for DP to alter theresolution.

3-3 Control Outputs-3 Control OutputsThere are 4 kinds of control modes can be configured as shown inTable 3.1able 3.1Table 3.1 Heat-Cool Control Setup Valueable 3.1 Heat-Cool Control Setup Value

ControlModes

OUT1 OUT2 O1HY O2HY CPB DB

Heat only REVR

Cool only DIRT

Heat: PIDCool: ON-OFF

Heat: PIDCool: PID

REVR

REVR

DE.HI

COOL

: Don't care

:Adjust to met processrequirements

:Required if ON-OFF controlis configured

UM0C911A34


35/78

Heat Only ON-OFF Control : Select REVR for OUT1, Set PB to 0,O1HY is used to adjust dead band for ON-OFF control, The output 1hysteresis ( O1HY ) is enabled in case of PB = 0 . The heat onlyon-off control function is shown in the following diagram :

Heat Only ON-OFF Control : Select REVR for OUT1, Set PB to 0,O1HY is used to adjust dead band for ON-OFF control, The output 1hysteresis ( O1HY ) is enabled in case of PB = 0 . The heat onlyon-off control function is shown in the following diagram :

SP1

SP1 O1HY

ON

OFF

OUT1 Action

PV

Dead band = O1HY

Time

Time

Figure 3.2 Heat OnlyON-OFF Control

Figure 3.2 Heat OnlyON-OFF ControlThe ON-OFF control may introduce excessive process oscillation evenif hysteresis is minimized to the smallest. If ON-OFF control is set ( ie.PB = 0 ), TI, TD, CYC1, OFST, CYC2, CPB, DB will be hidden and have

no function to the system. The auto-tuning mode and bumplesstransfer will be disabled too.

Select REVR for OUT1, set TI to 0,OFST is used to adjust the control offset ( manual reset ).

if PB is not equal to 0. OFST is measured by% with range 0 - 100.0 %. In the steady state ( ie. process has been

stabilized ) if the process value is lower than the set point a definite

value, say 5 C, while 20 C is used for PB, that is lower 25 %,

Heat only P ( or PD ) control :O1HY is

hidden OFST Function :

L L

The ON-OFF control may introduce excessive process oscillation evenif hysteresis is minimized to the smallest. If ON-OFF control is set ( ie.PB = 0 ), TI, TD, CYC1, OFST, CYC2, CPB, DB will be hidden and haveno function to the system. The auto-tuning mode and bumplesstransfer will be disabled too.

Select REVR for OUT1, set TI to 0,OFST is used to adjust the control offset ( manual reset ).if PB is not equal to 0. OFST is measured by% with range 0 - 100.0 %. In the steady state ( ie. process has beenstabilized ) if the process value is lower than the set point a definitevalue, say 5 C, while 20 C is used for PB, that is lower 25 %,

Heat only P ( or PD ) control : O1HY ishidden OFST Function :

L LUM0C911A 35


36/78

then increase OFST 25 %, and vice versa. After adjusting OFST value,the process value will be varied and eventually, coincide with set point.Using the P control ( TI set to 0 ), the auto-tuning is disabled.Refer to section 3-12 " manual tuning " for the adjustment of PB and

TD. Manual reset ( adjust OFST ) is not practical because the load maychange from time to time and often need to adjust OFST repeatedly.The PID control can avoid this situation.

then increase OFST 25 %, and vice versa. After adjusting OFST value,the process value will be varied and eventually, coincide with set point.Using the P control ( TI set to 0 ), the auto-tuning is disabled.Refer to section 3-12 " manual tuning " for the adjustment of PB andTD. Manual reset ( adjust OFST ) is not practical because the load maychange from time to time and often need to adjust OFST repeatedly.The PID control can avoid this situation.

Cool only control:ON-OFF control, P ( PD ) control and PIDcontrol can be used for cool control. Set OUT1 to DIRT ( directaction ). The other functions for control,

control and control are same asdescriptions for heat only control except that the output variable( and action ) for the cool control is inver se to the heat control.

cool only ON-OFF coolonly P ( PD ) cool only PID

Cool only control:ON-OFF control, P ( PD ) control and PIDcontrol can be used for cool control . Set OUT1 to DIRT ( directaction ). The other functions for control,control and control are same asdescriptions for heat only control except that the output variable( and action ) for the cool control is inverse to the heat control.cool only ON-OFF coolonly P ( PD ) cool only PID

NOTE :

Other Setup Required :

The ON-OFF control may result excessive overshoot andundershoot problems in the process. The P ( or PD ) control will resultin a deviation process value from the set point. It is recommended touse PID control for the Heat-Cool control to produce a stable and zerooffset process value.

O1TY, CYC1, O2TY, CYC2, O1FT, O2FTO1TY & O2TY are set in accordance with the types of OUT1 & OUT2installed. CYC1 & CYC2 are selected according to the output 1 type (O1TY ) & output 2 type ( O2TY ). Generally, selects 0.5 ~ 2 sec. forCYC1, if SSRD or SSR is used for O1TY; 10 ~ 20 sec. if relay is usedfor O1TY, and CYC1 is ignored if linear output is used. Similar conditionis applied for CYC2 selection.

NOTE :

Other Setup Required :

The ON-OFF control may result excessive overshoot andundershoot problems in the process. The P ( or PD ) control will resultin a deviation process value from the set point. It is recommended touse PID control for the Heat-Cool control to produce a stable and zerooffset process value.O1TY, CYC1, O2TY, CYC2, O1FT, O2FTO1TY & O2TY are set in accordance with the types of OUT1 & OUT2installed. CYC1 & CYC2 are selected according to the output 1 type (O1TY ) & output 2 type ( O2TY ). Generally, selects 0.5 ~ 2 sec. forCYC1, if SSRD or SSR is used for O1TY; 10 ~ 20 sec. if relay is usedfor O1TY, and CYC1 is ignored if linear output is used. Similar conditionis applied for CYC2 selection.

Heat only PID control :

very clever PID and Fuzzy verysmall overshoot and very quick response

Selecting REVR for OUT1, PB and TI shouldnot be zero. Operate auto-tuning for the new process, or set PB, TIand TD with historical values. See section 3-11 for auto-tuningoperation. If the control result is still unsatisfactory, then use manualtuning to improve the control . See section 3-12 for manual tuning. Theunit contains a algorithm to achieve a

to the process if it is properlytuned.

Heat only PID control :

very clever PID and Fuzzy verysmall overshoot and very quick response

Selecting REVR for OUT1, PB and TI shouldnot be zero. Operate auto-tuning for the new process, or set PB, TIand TD with historical values. See section 3-11 for auto-tuningoperation. If the control result is still unsatisfactory, then use manualtuning to improve the control . See section 3-12 for manual tuning. Theunit contains a algorithm to achieve ato the process if it is properlytuned.

UM0C911A36


37/78

You can use the program for the new process or directlyset the appropriate values for PB, TI & TD according to the historicalrecords for the repeated systems. If the control behavior is stillinadequate, then use to improve the control. See

for manual tuning.

auto-tuning

manual tuning

section 3-12

auto-tuning

manual tuningsection 3-12CPB Programming : The cooling proportional band is measured by %of PB with range 50~300. Initially set 100% for CPB and examine thecooling effect. If cooling action should be enhanced then decreaseCPB, if cooling action is too strong then increase CPB. The value ofCPB is related to PB and its value remains unchanged throughout theauto-tuning procedures.

CPB Programming :

Adjustment of CPB is related to the cooling media used. For air isused as cooling media, adjust CPB at 100(%).For oil is used ascooling media, adjust CPB at 125(%). For water is used as coolingmedia, adjust CPB at 250(%).

DB Programming: Adjustment of DB is dependent on the systemrequirements. If more positive value of DB ( greater dead band ) isused, an unwanted cooling action can be avoided but an excessiveovershoot over the set point will occur. If more negative value of DB (

greater overlap ) is used, an excessive overshoot over the set pointcan be minimized but an unwanted cooling action will occur. It isadjustable in the range -36.0% to 36.0 % of PB. A negative DB valueshows an overlap area over which both outputs are active. A positiveDB value shows a dead band area over which neither output is active.

DB Programming:

Output 2 ON-OFF Control ( Alarm function ):

DE.HIDE.LO DB.HI

DB.LO PV.HIPV.LO Figure 3.3 Figure 3.4

The output 2 can also beconfigured as alarm function. There are 6 kinds of alarm functions canbe selected for output 2, these are: (deviation high alarm ),

(deviation low alarm ), (deviation band out of band alarm), (deviation band in band alarm), (process high alarm )and ( process low alarm ). Refer to and forthe description of deviation alarm and process alarm with normalalarm mode ( NORM is set for ALMD ).

Output 2 ON-OFF Control ( Alarm function ):DE.HIDE.LO DB.HIDB.LO PV.HIPV.LO Figure 3.3 Figure 3.4

UM0C911A 37


38/78

SV+SP2

SV+SP2-O2HY

ON

OFF

OUT2 Action

PV

Time

TimeFigure 3.3 Output 2 DeviationHigh Alarm

Figure 3.3 Output 2 DeviationHigh Alarm

SP2+O2HY

SP2

ON

OFF

OUT2 Action

PV

Time

TimeFigure 3.4 Output 2 ProcessLow Alarm

Figure 3.4 Output 2 ProcessLow Alarm

OUT2=DE.HI

UM0C911A38


39/78

3-4 Alarm-4 AlarmThe output 2 can be selected as alarm output. There are 6 types of

alarm functions and one dwell timer can be selected, and four kinds of

alarm modes ( ALMD ) are available for each alarm function.

A sets two absolute trigger levels. When the process ishigher than SP2, a process high alarm occurs, and the alarmis off as the process is lower than SP2-O2HY. When the process islower than SP2, a process low alarm occurs and the alarm isoff as the process is higher than SP2+O2HY. A process alarm isindependent of set point.

process alarm( PV.HI )

( PV.LO )

A sets two absolute trigger levels. When the process ishigher than SP2, a process high alarm occurs, and the alarmis off as the process is lower than SP2-O2HY. When the process islower than SP2, a process low alarm occurs and the alarm isoff as the process is higher than SP2+O2HY. A process alarm isindependent of set point.

process alarm ( PV.HI )( PV.LO )

A alerts the user when the process deviates too far

from set point. When the process is higher than SV+SP2, a deviationhigh alarm occurs and the alarm is off as the process is lowerthan SV+SP2-O2HY. When the process is lower than SV+SP2, adeviation low alarm occurs and the alarm is off as the processis higher than SV+SP2+O2HY. Trigger level of deviation alarm ismoving with set point.

deviation alarm

(DE.HI)

(DE.LO)

A alerts the user when the process deviates too farfrom set point. When the process is higher than SV+SP2, a deviationhigh alarm occurs and the alarm is off as the process is lowerthan SV+SP2-O2HY. When the process is lower than SV+SP2, adeviation low alarm occurs and the alarm is off as the processis higher than SV+SP2+O2HY. Trigger level of deviation alarm ismoving with set point.

deviation alarm(DE.HI)

(DE.LO)

A presets two trigger levels relative to set point.The two trigger levels are and for alarm. When the

process is higher than ( SV+SP2 ) or lower than ( SV - SP2 ), adeviation band high alarm occurs. When the process is withinthe trigger levels, a deviation band low alarm occurs.

deviation band alarmSV+SP2 SV - SP2

( DB.HI )(DB.LO)

A presets two trigger levels relative to set point.The two trigger levels are and for alarm. When theprocess is higher than ( SV+SP2 ) or lower than ( SV - SP2 ), adeviation band high alarm occurs. When the process is withinthe trigger levels, a deviation band low alarm occurs.

deviation band alarm SV+SP2 SV - SP2( DB.HI ) (DB.LO)

There are four types of alarm modes available for each alarm function,these are: Normal alarm, Latching alarm, Holding alarm and Latching/

Holding alarm. They are described as follows:

There are four types of alarm modes available for each alarm function,these are: Normal alarm, Latching alarm, Holding alarm and Latching/Holding alarm. They are described as follows:

UM0C911A 39

Latching Alarm : ALMD = LTCHIf a latching alarm is selected, once the alarm output is energized, itwill remain unchanged even if the alarm condition is cleared. Thelatching alarm is reset when the RESET key is pressed, once the alarm

condition is removed.

Latching Alarm : ALMD = LTCH

Normal Alarm : ALMD = NORMWhen a normal alarm is selected, the alarm output is de-energizedin the non-alarm condition and energized in an alarm condition.

Normal Alarm : ALMD = NORM

In the above descriptions denotes the current set point value forcontrol which is different from SP1 as the ramp function is performed.

SVn the above descriptions denotes the current set point value forcontrol which is different from SP1 as the ramp function is performed.SV


40/78

PV

Holding Alarm : ALMD = HOLDA holding alarm prevents an alarm from power up. The alarm isenabled only when the process reaches the set point value. Afterwards, the alarm performs same function as normal alarm.

Holding Alarm : ALMD = HOLD

Latching / Holding Alarm : ALMD = LT.HOA latching / holding alarm performs both holding and latching function.The latching alarm is reset when the RESET key is pressed, once thealarm condition is removed.

Latching / Holding Alarm : ALMD = LT.HO

Alarm Failure Transfer failure modeON O2FT OFF

O2FT

is activated as the unit enters .Alarm will go on if is set for and go off if isset for . The unit will enter failure mode when sensor breakoccurs or if the A-D converter of the unit fails.

Alarm Failure Transfer failure modeON O2FT OFFO2FT

3-5 Configure Display-5 Configure DisplayC21 can be configured to display the process value by selecting PVfor DISP or to display the set point value by selecting SP1 for DISP inthe normal condition.

Examples:If LOCK is set with NONE, OUT2 is set with DEHI, DISP is set with PV,set SEL1=SHIF, SEL2=ADDR. SEL3=PB, SEL4~SEL8=NONE,then the display scrolling for C21 becomes:

UM0C911A40

If LOCK is set with NONE, OUT1 is set with REVR,nonzero value is set

for PB and TI, OUT2 is set with COOL, DISP is set with SP1, setSEL1=INPT, SEL2=PB, SEL3=TI, SEL4~SEL8=NONE, then thedisplay scrolling for C21 becomes:

SP1


41/78

3 - 6 Ramp- 6 RampThe ramping function is performed during power up as well as anytime the set point is changed. Choose MINR or HRR for RAMP, theunit will perform the ramping function. The ramp rate is programmedby adjusting RR. The ramping function is disabled as soon as thefailure mode, the manual control mode, the auto-tuning mode or thecalibration mode occurs.

The ramping function is performed during power up as well as anytime the set point is changed. Choose MINR or HRR for RAMP theunit will perform the ramping function. The ramp rate is programmedby adjusting RR. The ramping function is disabled as soon as thefailure mode, the manual control mode, the auto-tuning mode or thecalibration mode occurs.Example without Dwell Timerxample without Dwell TimerSelect MINR for RAMP, selects C for UNIT, selects 1-DP for DP, Set

RR= 10.0. SV is set to 200 C initially, and changed to 100 C after 30minutes since power up. The starting temperature is 30 C. Afterpower up the process is running like the curve shown below:

L

L LL

Select MINR for RAMP selects C for UNIT, selects 1-DP for DP SetRR= 10.0. SV is set to 200 C initially, and changed to 100 C after 30minutes since power up. The starting temperature is 30 C. Afterpower up the process is running like the curve shown below:

LL LL

200C

200C100

C100C30

C30C

17 30 40 Time(minutes)Time(minutes)

PV

0

Note: When the ramp function is used, the display will show thecurrent ramping value. However it will revert to show the set pointvalue as soon as the up or down key is touched for adjustment. Theramping value is initiated to process value either as power up or RRand /or set point are changed. Setting RR to zero means no ramp

function at all.

Note: When the ramp function is used, the display will show thecurrent ramping value. However it will revert to show the set pointvalue as soon as the up or down key is touched for adjustment. Theramping value is initiated to process value either as power up or RRand /or set point are changed. Setting RR to zero means no rampfunction at all.

Figure 3.5 RAMP Functionigure 3.5 RAMP Function

UM0C911A 41

Example for C91/C92:xample for C91/C92:Set OUT2=PVLO, LOCK=NONE, SEL1=INPT, SEL2=UNIT, SEL3=DP,SEL4~SEL8=NONE, then the display scrolling for C91 and C92becomes

PVPV SP1 SP2 ATMAN

SP1 SP2 PV


42/78

3-7 Dwell Timer-7 Dwell Timer

SP

PV

Time

Figure 3.6 Dwell Timer Functionigure 3.6 Dwell Timer FunctionIf output 2 is configured as dwell timer, ALMD will be hidden.f output 2 is configured as dwell timer, ALMD will be hidden.

Output 2 can be configured as dwell timer by selecting TIMR forOUT2. As the dwell timer is configured, the parameter SP2 is used

for dwell time adjustment. The dwell time is measured in minuteranging from 0.1 to 4553.6 minutes. Once the process reaches the setpoint the dwell timer starts to count down until zero ( time out ). Thetimer relay will remain unchanged until time out. The dwell timeroperation is shown as following diagram.

After time out the dwell timer will be restarted by pressing the RESETkey.

The timer stops to count during the manual control mode, failuremode, calibration period and auto-tuning period.

ON

OFF

ALM

Time

SP3

Timer starts

power off ortouch RESET key

UM0C911A42


43/78

3 - 8 PV Shift- 8 PV ShiftIn certain applications it is desirable to shift the controller displayvalue from its actual value. This can be easily accomplished by using

the PV shift function.

In certain applications it is desirable to shift the controller displayvalue from its actual value. This can be easily accomplished by usingthe PV shift function.

Here is an example. A process is equipped with a heater, a sensorand a subject to be warmed up. Due to the design and position of thecomponents in the system, the sensor could not be placed any closerto the part. Thermal gradient ( different temperature ) is common andnecessary to an extent in any thermal system for heat to be

transferred from one point to another. If the difference between thesensor and the subject is 35 C, and the desired temperature at thesubject to be heated is 200 C, the controlling value or thetemperature at the sensor should be 235 C. You should input -35 Cas to subtract 35 C from the actual process display. This in turn willcause the controller to energize the load and bring the processdisplay up to the set point value.

L

L

L L

L

Here is an example. A process is equipped with a heater, a sensorand a subject to be warmed up. Due to the design and position of thecomponents in the system, the sensor could not be placed any closerto the part. Thermal gradient ( different temperature ) is common andnecessary to an extent in any thermal system for heat to betransferred from one point to another. If the difference between thesensor and the subject is 35 C, and the desired temperature at thesubject to be heated is 200 C, the controlling value or thetemperature at the sensor should be 235 C. You should input -35 Cas to subtract 35 C from the actual process display. This in turn willcause the controller to energize the load and bring the processdisplay up to the set point value.

LL

L LL

The SHIF function will .alter PV onlyhe SHIF function will .lter PV only

165 C

C

Heat

Transfer

200 C

Sensor

SubjectHeater

35 C temperaturedifference is observedSHIF= 0

165 C

C

Heat

Transfer

200 C

Sensor

SubjectHeater

Adjust SHIFSHIF= -35 CSupply more heat

200 C

C

Heat

Transfer

23 5 C

Sensor

SubjectHeater

Display is stableSHIF= -35 CPV=SV

Figure 3.7PV Shift ApplicationFigure 3.7PV Shift Application

UM0C911A 43


44/78

3- 9 Digital Filter- 9 Digital FilterIn certain application the process value is too unstable to be read. To

improve this a programmable low pass filter incorporated in the

controller can be used. This is a first order filter with time constant

specified by parameter . The default value of FILT is 0.5 sec.

before shipping. Adjust FILT to change the time constant from 0 to 60

seconds. 0 second represents no filter is applied to the input signal.

The filter is characterized by the following diagram.

FILT

Time

PV

1 secsec

1 secsecILT=30

FILT=0FILT=1

Figure 3.8Filter CharacteristicsFigure 3.8Filter Characteristics

The Filter is available only for PV, and is performed for the displayed

value only. The controller is designed to use unfiltered signal for

control even if Filter is applied. A lagged ( filtered ) signal, if used forcontrol, may produce an unstable process.

The Filter is available only for PV, and is performed for the displayedvalue only. The controller is designed to use unfiltered signal forcontrol even if Filter is applied. A lagged ( filtered ) signal, if used forcontrol, may produce an unstable process.

Note

UM0C911A44


45/78

3 -10 Failure Transfer-10 Failure TransferThe controller will enter as one of the following conditionsoccurs:1. occurs due to the input sensor break or input current below

1mA if 4-20 mA is selected or input voltage below 0.25V if 1-5 V isselected .

2. occurs due to the A-D converter of the controller fails.

failure mode

SBER

ADER

fa ilure modeSBER

ADERThe output 1 and output 2 will perform the function asthe controller enters failure mode.

failure transferailure transfer

Output 1 Failure Transfer, if activated, will perform :

1. If output 1 is configured as proportional control ( PB=0 ), and BPLSis selected for O1FT, then output 1 will perform bumpless transfer.Thereafter the previous averaging value of MV1 will be used forcontrolling output 1.

2. If output 1 is configured as proportional control ( PB=0 ), and avalue of 0 to 100.0 % is set for O1FT, then output 1 will performfailure transfer. Thereafter the value of O1FT will be used forcontrolling output 1.

3. If output 1 is configured as ON-OFF control ( PB=0 ), then output 1will transfer to off state if OFF is set for O1FT and transfer to onstate if ON is set for O1FT.

Output 1 Failure Transfer

Output 2 Failure Transfer, if activated, will perform :1. If OUT2 is configured as COOL, and BPLS is selected for O2FT,

then output 2 will perform bumpless transfer. Thereafter the previousaveraging value of MV2 will be used for controlling output 2.

2. If OUT2 is configured as COOL, and a value of 0 to 100.0 % is set

for O2FT, then output 2 will perform failure transfer. Thereafter thevalue of O2FT will be used for controlling output 2.

3. If OUT2 is configured as alarm function, and OFF is set for O2FT,then output 2 will transfer to off state, otherwise, output 2 will transferto on state if ON is set for O2FT.

Output 2 Failure Transfer, if activated, will perform :1. If OUT2 is configured as COOL, and BPLS is selected for O2FT,then output 2 will perform bumpless transfer. Thereafter the previousaveraging value of MV2 will be used for controlling output 2.2. If OUT2 is configured as COOL, and a value of 0 to 100.0 % is setfor O2FT, then output 2 will perform failure transfer. Thereafter thevalue of O2FT will be used for controlling output 2.3. If OUT2 is configured as alarm function, and OFF is set for O2FT,then output 2 will transfer to off state, otherwise, output 2 will transferto on state if ON is set for O2FT.

UM0C911A 45


46/78

4. Press several times until appears on thedisplay.( for C21) or AT indicator is lit (for C91 and C92).

5. Press for at least 3 seconds. The AT indicator ( for C91and C92 ) or the display ( for C21 )will begin to flash and theauto-tuning procedure is beginning.

3 -11 Auto-tuning-11 Auto-tuningThe auto-tuning process is performed at set point.The process will oscillate around the set point during tuningprocess. Set a set point to a lower value if overshooting beyondthe normal process value is likely to cause damage.

The auto-tuning process is performed at set point.The process will oscillate around the set point during tuningprocess. Set a set point to a lower value if overshooting beyondthe normal process value is likely to cause damage.The auto-tuning is applied in cases of :Initial setup for a new processThe set point is changed substantially from the previous auto-tuning valueThe control result is unsatisfactory

The auto-tuning is applied in cases of :Initial setup for a new processThe set point is changed substantially from the previous auto-tuning valueThe control result is unsatisfactory***

Operation :peration :2. Set the correct values for the setup menu of the unit.

But don't use a zero value for PB and TI , otherwise, theauto-tuning program will be disabled. The LOCK parametershould be set at NONE.

3. Set the set point to a normal operating value or a lower value ifovershooting beyond the normal process value is likely tocause damage.

NOTE :OTE :The ramping function, if used, will be disabled once auto-tuningis proceeding.

The auto-tuning mode is disabled as soon as either failure modeor manual control mode occurs.

1. The system has been installed normally.

UM0C911A46


47/78

Procedures:The auto-tuning can be applied either as the process is warmingup ( Cold Start ) or as the process has been in steady state (Warm Start ).

After the auto-tuning procedures are completed, the AT indicatorwill cease to flash and the unit revert to PID control by using itsnew PID values. The PID values obtained are stored in thenonvolatile memory.

Auto-Tuning Erroruto-Tuning ErrorIf auto-tuning fails an ATER message will appear on the display in

cases of :

If auto-tuning fails an ATER message will appear on the display incases of :

Solutions toolutions to1. Try auto-tuning once again.2. Don't change set point value during auto-tuning procedure.

3. Don't set zero value for PB and TI.4. Use manual tuning instead of auto-tuning. ( See section 3-12 ).5. Touch RESET key to reset message.

1. Try auto-tuning once again.2. Don't change set point value during auto-tuning procedure.3. Don't set zero value for PB and TI.4. Use manual tuning instead of auto-tuning. ( See section 3-12 ).5. Touch RESET key to reset message.

If PB exceeds 9000 ( 9000 PU, 900.0 F or 500.0 C ).or if TI exceeds 1000 seconds.or if set point is changed during auto-tuning procedure.

L Lf PB exceeds 9000 ( 9000 PU, 900.0 F or 500.0 C ).or if TI exceeds 1000 seconds.or if set point is changed during auto-tuning procedure.L L

3 - 12 Manual Tuning- 12 Manual TuningIn certain applications ( very few ) using auto-tuning to tune a process

may be inadequate for the control requirement, then you can trymanual tuning.

If the control performance by using auto- tuning is still unsatisfactory,the following rules can be applied for further adjustment of PID values :

UM0C911A 47


48/78

ADJUSTMENT SEQUENCEDJUSTMENT SEQUENCE SYMPTOM SOLUTION(1) Proportional Band ( PB )1) Proportional Band ( PB )

(2) Integral Time ( TI )2) Integral Time ( TI )

(3) Derivative Time ( TD )3) Derivative Time ( TD )

Slow Responselow ResponseHigh overshoot orOscillationsHigh overshoot orOscillationsSlow Responselow Response

Slow Response orOscillationsSlow Response orOscillations

Instability orOscillationsInstability orOscillations

High Overshootigh Overshoot

Decrease PBecrease PBIncrease PBncrease PBDecrease TIecrease TIIncrease TIncrease TI

Decrease TDecrease TDIncrease TDncrease TD

Table 3.2 PID Adjustment Guideable 3.2 PID Adjustment GuideFigure 3.9 shows the effects of PID adjustment on process response.igure 3.9 shows the effects of PID adjustment on process response.

3 -13 Manual Control-13 Manual ControlOperation:To enable manual control the LOCK parameter should be set with

NONE , then press for several times then (Heating output)

or (Cool ing out put ) wi ll appear on t he di spl ay. Press for 3

seconds then the MAN indicator (for C91 and C92) or the displ ay (for

C21) will begin to flash. The controller now enters th e manual control

mode. indicates output control var iable for output 1, and

indicates control variable for output 2 . Now you can use up-

down key to adjust the percentage values for the heating or coolingoutput.

The controller performs open loop control as long as it stay s in manual

control mode.

To enable manual control the LOCK parameter should be set withNONE, then press for several t imes then (Heating output)or (Cooling output) will appear on the display. Press for 3seconds then the MAN indicator ( for C91 and C92) or the display ( forC21) wil l begin to f lash. The control ler now enters the manual controlmode. indicates output control variable for output 1, and

indicates control var iable for output 2. Now you can use up-down key to adjust the percentage values for the heating or coolingoutput.The control ler performs open loop control as long as it stays in manualcontrol mode.Exit Manual Controlxit Manual ControlTo press key the controller will revert to its normal display mode.o press key the controller will revert to its normal display mode.R

UM0C911A48


49/78

Figure 3.9 Effects of PID Adjustmentigure 3.9 Effects of PID Adjustment

PV

Time

Perfect

PB too highB too high

PB too lowB too low

Set pointet pointP actionaction

I actionaction

PV

Time

PerfectTI too lowI too low

TI too highI too high

Set pointet point

D actionaction

PV

Time

Perfect

TD too highD too high

TD too lowD too low

Set pointet point

UM0C911A 49


50/78

Two types of interface are available for Data Communication. These areand interface. Since RS-485 uses a differential architecture to

drive and sense signal instead of a single ended architecture which is used

for RS-232, RS-485 is less sensitive to the noise and suitable for a longer

distance communication. RS-485 can communicate without error over 1 km

distance while RS-232 is not recommended for a distance over 20 meters.

RS-485 RS-232Two types of interface are available for Data Communication. These areand interface. Since RS-485 uses a differential architecture todrive and sense signal instead of a single ended architecture which is usedfor RS-232, RS-485 is less sensitive to the noise and suitable for a longerdistance communication. RS-485 can communicate without error over 1 kmdistance while RS-232 is not recommended for a distance over 20 meters.

RS-485 RS-232

Using a PC for data communication is the most economic way. The signal

is transmitted and received through the PC communication Port ( generally

RS-232 ). Since a standard PC can't support RS-485 port, a networkadaptor ( such as ) has to be used to convert RS-485 to

RS-232 for a PC if RS-485 is required for the data communication. But there

is no need to be sad. Many RS-485 units ( up to 247 units ) can be

connected to one RS-232 port, therefore a PC with 4 comm ports can

communicate with 988 units. It is quite economic.

SNA10A SNA10B,

Using a PC for data communication is the most economic way. The signalis transmitted and received through the PC communication Port ( generallyRS-232 ). Since a standard PC can't support RS-485 port, a networkadaptor ( such as ) has to be used to convert RS-485 toRS-232 for a PC if RS-485 is required for the data communication. But thereis no need to be sad. Many RS-485 units ( up to 247 units ) can beconnected to one RS-232 port, therefore a PC with 4 comm ports cancommunicate with 988 units. It is quite economic.

SNA10A SNA10B

SetupEnters the setup menu.Select RTU for COMM . Set individual address as for those units which are

connected to the same port.Set the Baud Rate ( ), Data Bit ( ), Parity Bit ( ) and Stop

Bit ( ) such that these values are accordant with PC setup conditions.

BAUD DATA PARI

STOP

Enters the setup menu.Select RTU for COMM . Set individual address as for those units which areconnected to the same port.Set the Baud Rate ( ), Data Bit ( ), Parity Bit ( ) and StopBit ( ) such that these values are accordant with PC setup conditions.

BAUD DATA PARISTOP

If you use a conventional 9-pin RS-232 cable instead of CC94-1, the cable

should be modified for proper operation of RS-232 communication

according to Section 2-9.

If you use a conventional 9-pin RS-232 cable instead of CC94-1, the cableshould be modified for proper operation of RS-232 communicationaccording to

3 - 14 Data Communication- 14 Data CommunicationThe controllers support mode of protocol for the datacommunication. Other protocols are not available for the series.

RTU Modbus

UM0C911A50


51/78

To achieve this function set the following parameters in the setupmenu.To achieve this function set the following parameters in the setupmenu.

Auto-Tuning is performed at 150 C for a new oven.Luto-Tuning is performed at 150 C for a new oven.

INPT=K_TC UNIT= C DP=1_DP

OUT1=REVR O1TY=RELY CYC1=18.0

O1FT=BPLS OUT2=TIMR O2FT=ON

LNPT=K_TC UNIT= C DP=1_DPOUT1=REVR O1TY=RELY CYC1=18.0O1FT=BPLS OUT2=TIMR O2FT=ON

L

Figure 4.1

Heat Control

Example

Figure 4.1Heat ControlExample

MainsSupplyMainsSupply

ON

OFFTimer ( ALM )imer ( ALM )

Heater

T/C

Oven

90

OUT1

SetSP1=150.0SP2 =30.0SP1=150.0SP2 =30.0

4 - 1 Heat Only Control with Dwell Timer- 1 Heat Only Control with Dwell TimerAn oven is designed to dry the products at 150 C for 30 minutes andthen stay unpowered for another batch. A C91 equipped with

is used for this purpose. The system diagram is shown as

follows :

B

dwell

timer

dwelltimer

Chapter 4 Applicationshapter 4 Applications

C

4 5

PV MAN ATP2P1

F

C9 1

OP 1 OP2

R

UM0C911A 51


52/78

4 - 2 Cool Only Control- 2 Cool Only ControlA C91 is used to control a refrigerator at temperature below 0 C. The

temperature is lower than the ambient, a cooling action is required.

Hence select DIRT for OUT1. Since output 1 is used to drive amagnetic contactor, O1TY selects RELY. A small temperature

oscillation is tolerable, hence use ON-OFF control to reduce the over-

all cost. To achieve ON-OFF control, PB is set with zero and O1HY is

set at 0.1 C.

B

B

Setup Summary:etup Summary:INPT=PT.DNUNIT= C

DP=1-DP

OUT1=DIRT

O1TY=RELY

LINPT=PT.DNUNIT= CDP=1-DPOUT1=DIRTO1TY=RELY

L

User Menu:ser Menu:PB = 0 ( C )O1HY=0.1 ( C )

L

L

PB = 0 ( C )O1HY=0.1 ( C )L L

Figure 4.2Cooling Control ExampleFigure 4.2Cooling Control Example

RTD

Refrigeratorefrigerator

34 5 9

10

MainsSupplyMainsSupply

PV

Date post:	08-Aug-2018
Category:	Documents
Upload:	santiago-jimenez
View:	217 times
Download:	0 times

BrainChild C91

Documents