Important Safety Information .................................... 2 QUALIFIED PERSONNEL ONLY ........................ 2 ELECTRICAL SHOCK HAZARD ......................... 2 FIRE HAZARD – NOT FOR USE WITH FLAMMABLE REFRIGERANTS .......................... 2
Signal Word Definition ............................................ 2
Drive Handling .......................................................... 3 Handle and store the drive correctly to prevent damage. ................................................................... 3 Mounting .................................................................. 3 Drive Accessories and Dimensions ......................... 3 Wiring Diagram ........................................................ 3
OPERATION & FUNCTION ........................................ 3
Hi-pot Procedure / Set-up ........................................ 3 Temperature, Humidity and Altitude ........................ 3 Pre-operation Checks .............................................. 4 Power On/Off ........................................................... 4 Communication Setting ............................................ 4
Input Voltage and Input Current ............................... 4 Speed Control ........................................................... 4 Start-up ..................................................................... 4 Shutdown .................................................................. 4 Fault Clearing ........................................................... 4 Lockout Faults .......................................................... 4 Stator Heat Control ................................................... 4 Status Indication ....................................................... 5
LED for COMMS .................................................. 5 Operation Indicating LED (Green LED605) .......... 5 Protection Indicating LED (Yellow LED604) ......... 5 Hardware Fault Indicating LED (Red LED603) .... 5 LED for Drive Control (Green LED602) ................ 5 LED for Power Factor Correction (Green LED601) .............................................................................. 5
This bulletin includes important safety information. OEMs integrating the Copeland Scroll™ variable speed drive into a system should ensure that their own employees follow this bulletin and provide any necessary safety information to those involved in manufacturing/installing the drive, purchasers of systems, and service personnel who may need to maintain and repair the systems.
Important Safety Information
Failure to follow these warnings could result in serious personal injury or death.
QUALIFIED PERSONNEL ONLY
• OEMs are responsible for system design, selection of appropriate components, integration of this component into the system, and testing the system. OEMs must ensure that staff involved in these activities are competent and qualified.
• Only qualified and authorized HVAC or refrigeration personnel are permitted to install, commission, troubleshoot and maintain this equipment. Electrical connections must be made by qualified electrical personnel.
• Observe all applicable standards and codes for installing, servicing, and maintaining electrical and refrigeration equipment.
ELECTRICAL SHOCK HAZARD
• Before servicing, disconnect and lock out power, and discharge all capacitors for a minimum of two minutes.
• Molded electrical plug must be used when required.
FIRE HAZARD – NOT FOR USE WITH FLAMMABLE REFRIGERANTS
• This drive is not for use in systems with flammable refrigerants. In the event of a refrigerant leak, the drive may ignite the refrigerant resulting in fire and explosion.
Signal Word Definition
The signal word explained below is used throughout the document to indicate safety messages.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
WARNING
These commodities, technology or software, are subject to the U.S. Export Administration Regulations (EAR). Diversion contrary to U.S. law is prohibited. ECCN: EAR99
The inverter drive has been developed specifically for variable speed compressors utilizing non-flammable refrigerants. The drive will power the compressor, control the compressor running speed, provide compressor and drive protection and communicate with the master controller. The drive requires cooling and is typically installed in a system near the compressor.
Theory of Drive Operation
The primary purpose of the drive is to convert the 50/60 Hz AC input voltage into a variable frequency, variable voltage output to power the variable speed scroll compressor. The drive conditions the AC input voltage through a series of conditioning processes to arrive at the desired output. The drive first converts the AC input voltage into a DC voltage. The DC voltage is then pulse-width modulated to replicate a sinusoidal current at the desired frequency and voltage.
Agency Recognition
UL 60730-1, IEC 60335-1, IEC 60335-2-34
Nomenclature
The model number of the drive includes the power rating and nominal voltage input to the drive. See Applications Engineering for a complete explanation of all of the alpha and numeric characters in the drive model number.
INSTALLATION
Drive Handling
Handle and store the drive correctly to prevent damage.
• Never cut across the drive with anything sharp. Do not use a sharp blade to open the protection bag.
• Hold the drive only by the tray or edges of the heatsink. Do not hold by the components on the drive or drive accessories.
• Once opened do not stack the drives on each other.
• Use electrostatic discharge control wristbands and anti-static mats when touching the drive.
• Torque all screw terminals to 18-20 lb-in (2.0-3 N-m) to prevent any damaged to the inverter and filter board.
Mounting
The drive should be located as close to the compressor as possible, preferably within 5 feet, since the wiring between the drive and the compressor is unshielded.
Air-cooled drives are supported inside the HVAC system by an extended heatsink plate. The plate mounts through an opening in the cabinet sheet metal to expose the heatsink to the condenser fan air stream. The flange contains a gasket surface to prevent water from entering the electronics side of the control box.
The flat plate option accommodates installation to systems using the mating gas or liquid cooled cold plate heat exchanger. The cold coupling plate is designed by OEM to accommodate the system design.
There are holes in the drive mounting flange for mounting purposes. These holes will accommodate an M5 sized screw for mounting.
Drive Accessories and Dimensions
Refer to Addendum for accessories. Contact Application Engineering for detailed dimensions with tolerance and drawings.
Wiring Diagram
Refer to Figure 1 for a detailed description of the drive wiring diagrams. Refer to Table 1 and Table 2 for a detailed description of the connector pin definition.
OPERATION & FUNCTION
Hi-pot Procedure / Set-up
Refer to Addendum for hi-pot procedure and setup. Please call your Application Engineer for additional details.
Temperature, Humidity and Altitude
Drive operating temperature range: -25°C to 65°C Drive storage temperature range: -40°C to 85°C Humidity: Maximum relative humidity 95%
The drive is designed to meet creepage and clearance requirements for a maximum altitude of 2000 meters.
Before operating, make sure that all the wires are correctly and tightly connected. Improper connections may cause fire or electric shock.
Power On/Off
The drive should use rated AC power supply: 50/60Hz,200~240V. Use of incorrect power supply may damage the drive. Make sure that the correct combination of a power supply, drive and accessories are used.
When powering off the drive, wait for at least 2 minutes to ensure that the drive is completely turned off.
Communication Setting
The drive is designed to be used in a master-slave configuration where the master is a system controller. Two standard Modbus® protocols are available: RTU and ASCII.
Users can select RTU Mode or ASCII Mode by writing the value of related register according to the Modbus Map. For example, to choose the RTU Mode under ASCII Mode, write 0x2345 passwords to Register 200 to get Modbus Map Access first, and then write 0002H to the register 201. Power off the drive and repower on again, and then the communication mode will be changed to RTU mode.
Users can also change the slave ID, baud rate, parity and stop bit method. Detailed parameters and default values are in the Modbus Map (refer to Addendum).
Modbus uses a three-layer protocol – physical, data link, and application. Refer to Addendum for additional details.
Input Voltage and Input Current
The drives are designed for an input power supply of 200 to 240 volts 50/60 Hz. Published performance of the drive and compressor combination will have a performance tolerance specified on the compressor performance data sheet when the drive input voltage is in the range of 200 to 240 volts.
Drive Max AC Input Current
EV2080M 36A RMS
EV2055M 24A RMS
EV2037M 18A RMS
Power Factor Correction
The drive has active power factor correction. The drive is capable of correcting the AC input current to maximize system efficiency.
Speed Control
The speed range of EV2 is from 900 RPM to 7200 RPM. If the speed set by system controller is less than 900 RPM but not zero, then the compressor will work at 900 RPM. Similarly, if the speed set by system controller is greater than 7200 RPM, then the compressor will operate at 7200 RPM.
Start-up
Refer to Addendum for start-up procedures and requirements.
Shutdown
Refer to Addendum for shutdown procedures and requirements.
Fault Clearing
Faults will not clear unless they are commanded by system control.
To clear faults, use the following method:
1. The compressor has been shut down for at least 35 seconds.
2. The fault condition no longer exists (registers 78-85).
3. The drive has received a zero speed command (register 101 = 0).
4. The drive has been disabled (register 100 = 0).
5. Write '1' to register 103.
Faults will not clear unless all items above are true.
Lockout Faults
There are specific faults that will cause the drive to 'lockout' after 10 consecutive occurrences. These faults are noted in the Addendum.
These faults will not clear unless the power to the drive is fully cycled.
Stator Heat Control
In actual use, the system controller may decide whether to preheat or not according to the environment. When preheating is needed, the system controller sends register 100 a compressor enable
command and register 102 a stator heating power value. The drive transmits up to 50W DC power to warm up the compressor.
The stator heating is on if the following are true:
1. There are no active errors.
2. Compressor enabled.
3. Compressor speed is set zero.
4. Stator heater power setting is from 10~50.
If the system sends a speed demand to the drive while the stator is heating; the drive will stop stator heating and start the compressor. While running, if the system sends a zero-speed command, the drive will shut down the compressor automatically, and then resume the stator heating to the value saved in Stator Heater Power Memory Register (a value or zero = off).
Status Indication
There are three control chips on the drive board and all of them have their own LED status display, COMMS, DSP and power factor correction.
LED for COMMS
Operation Indicating LED (Green LED605)
When the drive is in a normal state (no protection and fault), the drive is in a standby state, and the compressor is not running; the LED will blink at 0.5Hz frequency. If the compressor is running, the LED will always be on.
Protection Indicating LED (Yellow LED604)
When the drive is under protection, the yellow LED will blink 'N' times. Refer to the Troubleshooting section within the Addendum for more information.
Hardware Fault Indicating LED (Red LED603)
When the drive is under hardware fault, the red LED will blink 'N' times. Refer to the Troubleshooting section within the Addendum for more information.
LED for Drive Control (Green LED602)
When the drive is in normal state, whether the compressor is running or standby, the LED will blink at 1Hz frequency. When the drive is under protection or hardware fault, the LED will blink at 8Hz frequency.
N - Yellow LED = PROTECTION N - Red LED = FAULT
LED for Power Factor Correction (Green LED601)
PFC control circuit has a LED indicator (Green). The status of the LED is only related with PFC.
When the drive PFC is not in operation, the LED will blink at 1Hz frequency. When the PFC is in operation, the LED will be on.
Power Interrupt
Power interrupts can result in a drive trip that won't harm the drive. The drive can withstand interrupts of a short duration (<=10 ms), but will trip on anything longer.
Drive Configuration
Another feature available on the drive is the option to change communication parameters, configure the drive to use different types of compressors and sensors. Modbus registers 200 - 208 and 210 -212 serve this function (refer to Modbus Map within the Addendum for details).
These options are password protected. Register 200 must have the correct password written before any parameters can be changed. All register functions and default values are located in the Modbus Map.
• Registers 201-204 are for communication parameters.
• Registers 203 and 204 are automatically configured by the drive, based on baud rate and parity information from the system controller.
• Register 205 is for compressor model type.
• Registers 206 & 207 are for sensor type configurations.
• Register 208 designates US or EU Power Factor Correction thresholds.
• Register 210 is controlled shutdown rate configuration.
• Register 211 and 212 are configured for speed ramp up and ramp down rate configuration.
• Register 213 is configured for ramp-up speed level at start-up.
• Reg.214 is configured for auto communication detection.
Once configured only changes to registers 201-204 will require power cycle for the changes to be implemented.
Refer to Addendum for configuration process flow and communication settings process flow.
High Pressure Cut Out
CN610 is a 2-port connector. The output is a 3.3VDC signal. The high-pressure cutout switch must be normally closed. If the switch is open, the drive will not operate. The output current range for the high-pressure contact will range from 5mA – 10mA.To ensure correct functionality of the high-pressure switch for the system’s lifetime, typically gold-plated contacts are recommended. Refer Table-2 for detailed pinout.
This port is hardware Protected Electronic Circuit (PEC) according to IEC 60335-1 and software is Class-B.
Drive Cooling
Because of the power electronics used in the drive and the associated heat generation, drive cooling is required to keep the drive components in their design temperature range. The allowable temperature range of the drive (the ambient air surrounding the drive) is -13°F to 150°F. Drive temperature should be monitored during system development at system extreme conditions to ensure that the maximum allowable drive temperature isn’t exceeded. The highest drive temperature will typically occur during high load conditions or during high drive ambient.
The minimum recommended thermal capacity removal should be approximately 270 Watts and a maximum components temperature of 85˚C.
Drive Over Temperature Protection
The drive is self-protected against high internal temperatures. There are different modes of protection (temperature high and foldback). For temperature high refer to Troubleshooting Table within Addendum. For foldback protection refer to Addendum for more information.
Air Cooled Heat Exchanger
Drives cooled by the aluminum air cooled heat exchanger are designed to be in the air flow stream of the condenser. The air-cooled heat exchanger must be installed so that the heat exchanger fins are parallel to the cooling air flow. The airflow must be a minimum of 3 meters/secs measured at the outlet of the heatsink in the direction of airflow.
Cold Plate Heat Exchanger
The cold plate design can be used when another cooling source is available – suction gas from the evaporator coil, subcooled liquid refrigerant, glycol
solution from a geothermal loop, water from a cooling tower, etc. When refrigerant is used for drive cooling, the heat given up by the drive is transferred into the refrigeration system. This can be a net gain for heating applications and a net loss for cooling applications.
There must be thermal grease between flat plate cold plate.
There is no standard for the thickness requirement of thermal grease; normally, it's between 0.2mm-0.4mm. The entire surface of the flat plate must be covered. Dow Corning 340 silicone heat sink compound or similar product is recommended. Contact Application Engineering for cold plate details.
The soldering/brazing that is required to connect the cooling source to the cold plate should be performed before the cold plate is attached to the drive, to prevent overheating drive components with the torch.
Foldback
To protect the drive components and the compressor; the compressor speed will 'foldback' or slow down to help reduce risk to components. The foldback event(s) will be flagged in the drive's Modbus registers. This will allow the operating system to respond and mitigate the conditions causing foldback.
For further information refer to Addendum.
Troubleshooting
The drive may indicate fault or protection for various reasons. If fault or protection occurs, users should power down the drive, check the drive, and check the drive running condition carefully. For the description, check and handling of these faults or protections, please refer to the Troubleshooting – Fault and Protection within Addendum
EMC Guidelines:
Mount the EMI filter as close as possible to the drive.
Install the star earth (ground) connection as close as possible to the drive. A non-coating screw is recommended for installation on the service panel to maintain a good ground connection. The star connection includes:
• System Input ground
• Drive Heat-sink ground
• EMI filter ground
The use of additional ferrites and numbers of turns in the input power supply cables, compressor cables,
sensor cables are optional but preferred based on system application and noise level.
Any of the input power supply cables, sensor cables, compressor cables and communication cables should not cross or touch each other to avoid noise coupling.
Use of shielded cable is optional depending on system application, but if used it’s mandatory to have correct connections on both sides of the cable.
Table 1 – CN603 (Modbus) Communication Connector Pin Definition
Pin Number
Description Figure
1 RS485 (+)
2 Not Used
3 Not Used
4 RS485 (-)
5 Common
6 EMI Drain Wire
Description Part Number
6-pIn Connector Housing Molex 0039012065
or Equivalent
Connector Pins Molex 0039000038
or Equivalent
Table 2 – Sensor Connector Pin Definition
Pin Number
Description Figure
1 Sensor Pin
2 3.3VDC
3 Not Used
4 Not Used
A1 High Pressure Signal
A2 3.3VDC
CN602 (DLT Sensor) Connector (Pin -1 to 4) P/N Information
Description Part Number
4-Pin Connector Housing Molex 39-01-2045 or Equivalent
Connector Pins Molex 39-00-0428 or Equivalent
CN610 (HPS) Connector (A1/A2) P/N Information
Description Part Number
2-Pin Connector Housing JST Sales America XLP-02V or
Equivalent
Connector Pins JST Sales America SXF-41T-P0.7
or Equivalent
The contents of this publication are presented for informational purposes only and are not to be construed as warranties or guarantees, express or implied, regarding
the products or services described herein or their use or applicability. Emerson Climate Technologies, Inc. and/or its affiliates (collectively "Emerson"), as applicable,
reserve the right to modify the design or specifications of such products at any time without notice. Emerson does not assume responsibility for the selection, use or
maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson product remains solely with the purchaser or end user.
TABLE OF CONTENTS
1 Start-up and Shutdown Sequence Of The Compressor ............................................................... 2
2 Drive Foldback Information ............................................................................................................... 3
1 START-UP AND SHUTDOWN SEQUENCE OF THE COMPRESSOR
Table 1 - Start-up Sequence
Stage Description Target Speed (rpm) Ramp Up Rate (rpm/s) Duration (s)
I Compressor command started 1200 600 2
II Compressor continues to ramp up 1500 60 5
III Compressor remains at the platform speed
1500 (Configurable) - 10
IV Compressor reaches commanded speed
Commanded Default = 60 -
Table 2 - Shutdown Sequence
Stage Description Target Frequency (rpm)
Ramp Down Rate (rpm/s)
I Compressor Shutdown requested - -
II Compressor gets to minimum speed
900 Default = 150
III Compressor Stop - -
Figure 1 – Start-up Sequence
Speed
Time
1500-3500RPM (Reg.213) Customer configured
1200 RPM
2 S 7 S 17 S
15S
600 RPM / S
60 RPM / S
60-360RPM/S (Reg.211)
60-360RPM/S (Reg.212)
Ramp Up/Down rate is
Customer configured
Figure 2 – Shutdown Sequence
2 DRIVE FOLDBACK INFORMATION
Table 3 – Input Current Foldback
Condition Action taken by the Drive
1 Input Current >= Foldback Current Will reduce the speed at the rate of 20 rpm/s
2 Recovering Current <= Input Current < Foldback Current
Will remain in the current speed
3 Input Current < Recovering Current Speed will be recovered to commanded speed
4
If the compressor load is not recovered and continue to exceed the foldback limit in one of the conditions below:
• After compressor running speed has reached to 2100rpm and then stay at 2100rpm for >= 30sec. OR
• If the original running speed was already < 2100rpm for >= 30sec
Compressor will be tripped
Stop
Shutdown Initiated
60-360RPM/S (Reg.210)
900RPM (Minimum Speed)
Shutdown Down rate is
Customer configured
Table 4 – Output Current Foldback
Condition Action taken by the Drive
1 Output Current >= Foldback Limit of operating speed range
Will reduce the speed at the rate of 20 rpm/s
2 Recovering Current <= Output Current < Foldback Limit of operating speed range
Will remain in the current speed
3 Output Current < Recovering Current Speed will be recovered to commanded speed
4
If the compressor load is not recovered and continue to exceed the foldback limit in one of the conditions below:
• After compressor running speed has reached to 2100rpm and then stay at 2100rpm for >= 30sec. OR
• If the original running speed was already < 2100rpm for >= 30sec
Compressor will be tripped
Table 5 – Inverter Temperature Foldback
Condition Action taken by the Drive
1 Inverter Temperature >= Foldback Temperature Will reduce the speed at the rate of 20 rpm/s
2 Recovering Temperature <= Inverter Temperature < Foldback Temperature
Will remain in the current speed
3 Inverter Temperature < Recovering Temperature Speed will be recovered to commanded speed
4
If the compressor load is not recovered and continue to exceed the foldback limit in one of the conditions below:
• After compressor running speed has reached to 2100rpm and then stay at 2100rpm for >= 30sec. OR
• If the original running speed was already < 2100rpm for >= 30sec
Compressor will be tripped
3 MODBUS MAP
Modbus Register
Register Type Description Fault Shutdown
Units Bytes Data Format
0
Serial and Model Numbers
(Read)
Drive Model Number
N/A N/A 32 bytes ASCII
character
string
EV20XXM-C1-19X/89X 0XX:power Ex. 055 = 5.5kW max capacity
1
Drive Serial Number
N/A N/A 32 bytes ASCII
character
string
ADXXXXXXX Ex. AD13K0001 AD: Production Code 13:2013,production year. K: Month Code, A=Jan, B=Feb,…,L=Dec. 0001: Product Serial Number.
3
Configuration and Status Parameter
(Read)
Allowed maximum Speed (for speed limit
protection)
N/A Hz 2 Bytes Value: 0~120 = 0~120Hz Ex. : If value = 100, then maximum allowed running speed = 100Hz
4
Allowed minimum Speed (for speed limit
protection)
N/A Hz 2 Bytes Value: 0~120 = 0~120Hz Ex. : If value = 100, then minimum allowed running speed = 100Hz
5
Drive status
N/A
N/A
2 Bytes
Bit0: PFC Chip Reset 0 = Normal Working 1= PFC Chip Reset Bit1: DSP Chip Reset 0 = Normal Working 1= DSP Chip Reset Bit2: Drive Running Status 0 = Normal 1= Under Faults Bit3: PFC Status 0 = OFF 1 = ON Bit4: Compressor Status 0 = OFF 1 = ON Bit5: Compressor Parameters Update 0 = No Update 1 = Updating Bit6: Frequency Descending Protection 0 = Normal Working 1 = Under Protection Bit7: Protection State 0 = Normal State 1 = Under Protection Bit8: Frequency Stable Flag 0 = Stable 1 = Not Stable Bit9: Frequency Increase Flag 0 = No Increase 1= Frequency Increase Bit10: Frequency Decrease Flag 0 = No Decrease 1= Frequency Decrease Bit11: Frequency Set Outsize 0 = Set OK 1= Set Value Outsize Bit12: Compressor Starting Flag 0 = Not Starting 1= Compressor Starting
0 When configured to “100”, the DLT limit at Reg.38 is not applicable, it is only for lab usage.
208
Customer Configuration
Parameter (Read/Write)
PFC Config Option
2 Bytes
0 = PFC Threshold for US 100 = PFC Thresholds for EU
0
210
Controlled Shutdown Rate Config Option
2 Bytes
16.0 0 = Not Configured Can be configured in increments of "20" (20 to 120). Decimal value of 20 = 60rpm/sec Ex. If Value = 50, then it's 150rpm/sec
50
These values need to be re-configured only if different shutdown, ramp up &
ramp down rates are required.
211
Speed Ramp-up Rate Config Option
2 Bytes
16.0 0 = Not Configured Can be configured in increments of "20" (20 to 120). Decimal value of 20 = 60rpm/sec Ex. If Value = 20, then it's 60rpm/sec
20
212
Speed Ramp-down Rate Config Option
2 Bytes 16.0 0 = Not Configured Can be configured in increments of "20" (20 to 120). Decimal value of 20 = 60rpm/sec Ex. If Value = 20, then it's 60rpm/sec
20
213
Ramp-up Speed Level Config Option during
Start-up
2 Bytes 16.0 100RPM/bit 0 = Default Ramp-up profile at start-up Ex. 15 = 1500RPM Range: 1500RPM to 3500RPM in 100RPM increments
0
214
Auto-Comm Configuration
Selection
2 Bytes 0 = Auto Detection Enabled Bit1 =1 Auto Detection Disabled
0
Auto Communication Detection Enable/Disable option.
When Bit1 = 1 (Manually baud rate and parity configured at registers Reg.203 & 204)
*Note: After 10 occurrences of a particular lockout related fault within 10hours time period, the drive will go into hard
lockout and need to be power cycled to clear the fault.
4 DRIVE CONFIGURATION FLOW CHARTS
Apply Power to Drive
Write Password “0x2345” to Register 200.
Read Registers 201 to 214(203 & 204 are
autoconfigured by the drive)
Do values match spec?
Faults?Query fault status
Write values according to Modbus Map to Registers
205 to 214Operate drive
Troubleshoot according to the fault
YES
YES
NO
NO
5 TROUBLESHOOTING GUIDE
Item Fault/Protection Check and Handling Registers Bit Blink Code LED603 = RED,
LED604=YELLOW
1
Compressor Phase Over Current
1. Check the U/V/W connections on drive side
78 80 0 1 or 3
2. Check the compressor motor windings
3. Check the compressor is operating with in specified limits.
Sensor on Drive not reading properly - Replace Drive
4
2 Compressor Phase Current Fold Back
Timeout
Check if the compressor is operating outside the specified speed range.
79 81 2 16
3
AC Input Over Current
1. Check the line voltage if it is < 187VAC.
78
80
1
11
2. Check the line voltage for noise. 3. Check the compressor is operating with in specified limits. 4. If the problem still persists, then it's possibly a drive component issue. Replace the drive
14
15
AC Input Current Sampling Fault
Sensor on Drive not reading properly 5
4
DC Bus Over Voltage
1. Check the line voltage if it is > 265VAC. 2. Check the DC bus voltage if it is >385VDC 3. Check the compressor is operating with in specified limits.
78
80
2
7
5
DC Bus Under Voltage
1. Check the line voltage if it is < 187VAC. 2. Check the DC bus voltage if it is < 385VDC 3. Check the compressor is operating with in specified limits.
78
80
3
8
6
AC Input Over Voltage
1. Check the line voltage if it is > 265VAC. 2. Check the DC bus voltage if it is > 385VDC 3. Check the compressor is operating with in specified limits.
78
80
4
10
7
AC Input Under Voltage
1. Check the line voltage if it is < 187VAC. 2. Check the DC bus voltage if it is < 385VDC 3. Check the compressor is operating with in specified limits.
78
80
5
9
8
Power Module Over Temp
Verify proper airflow over the heat-sink of the drive. Remove any obstructions. Check that the compressor is operating within specified limits. Check the mounting screws on the drive, make sure they are tight. If the problem, still persists replace the drive.
78
80
11
4
9 PFC-IGBT Over Temp
78 80 12 5
10
Lost Rotor Position 1. Check the U/V/W connections on drive
side & compressor side.
2. Check the compressor motor windings
78
80
13
2
11 Compressor Phase
Current Imbalance 82 84 0 14
12
Microelectronic Fault 1. DSP self-check error, restart the drive and fault should go away. 2. If problem persists, replace the drive.
82
84
2
13
EEPROM fault 12
13 Power Module Temp Low or Sensor Open
fault
Temperature sensing device on the drive are possibly defective. If problem persists, replace the drive.
83 85 5 2
14
DC Bus Voltage Low
1. Check the line voltage if it is < 187VAC. 2. Check the DC bus voltage if it is < 385VDC. 3. Check the compressor is operating with in specified limits.
79 81 0 17
15
AC Input Current
Fold Back Timeout.
1. Check the line voltage if it is < 187VAC. 2. Check the compressor is operating with in specified limits. 3. If problem persists, replace the drive.
79 81 4 15
16
Modbus Communication Lost
1. Check mod-bus communication cable connections. 2. Check the communication parameters are set right. 3. Power cycle the drive. 4. If problem persists, replace the drive.
79
81
7
11
17 Sensor 2 (Thermistor, DLT)
High Temp
1. Check the DLT/Scroll Thermistor connection. 2. Check the compressor is operating with in specified limits.
79 81 8 6
18
Power Module Temp High
Verify proper airflow over the heat-sink of the drive. Remove any obstructions. Check that the compressor is operating within specified limits. Check the mounting screws on the drive, make sure they are tight. If the problem, still persists replace the drive.
79
81
11
18
19 PFC-IGBT High Temp
79 81 12 19
20 PFC MCU and DSP Communication Lost
1. Check mod-bus communication cable connections. 2. Check the communication parameters are set right. 3. Power cycle the drive. 4. If problem persists, replace the drive.
79 81 13 9
21 COM MCU and DSP Communication Lost
79 81 14 8
22 PFC-IGBT Temp Low or Sensor Open
fault
Verify proper airflow over the heat-sink of the drive. Remove any obstructions. Check that the compressor is operating within specified limits. Check the mounting screws on the drive, make sure they are tight. If the problem, still persists replace the drive.
83 85 6 1
23 Power Module Temp. Fold Back
Timeout
79 81 3 21
24 Sensor 1 (High Pressure Switch
Open)
Condensing Pressure beyond limit, system issue.
78 80 8 20
25 Sensor 1 (High Pressure Sensor)
Low or Open
Condensing Pressure below limit, system issue.
82 84 5 N/A
26 Compressor Model Configuration Error
Compressor model and configuration code do not match
82 84 6 22
27 High Pressure Sensor Type
Configuration Error
Pressure sensor and configuration code do not match
82 84 7 23
28 Sensor 2 (Thermistor, DLT)
Low Temp or Open
1. Check the DLT/Scroll Thermistor connection. 2. Check the resistance of the sensor to ensure values are with in specified limits.
83 85 2 3
29 AC Input Voltage Sampling Fault
Sensor on Drive not reading properly N/A N/A N/A 6
30 DC BUS Voltage Sampling Fault”
Sensor on Drive not reading properly N/A N/A N/A 7
31 Fault Limit Lockout Certain faults have a trip limit, see modbus map for details
82 84 15 N/A
32 Auto Config Communication Fault Timeout
Baud rate or Parity of the system controller not matching with drive. Check whether system controller is working, then Power Cycle the drive.
79 81 6 17
6 HI-POT TESTING
There many different types of dielectric testers available. When selecting one to use ensure it
has the following features:
• Can test to voltages up to 3000VDC or higher.
• Can read leakage currents less than 10µA.
• Has Arc Detection available.
Recommended test settings:
• APPLIED VOLTAGE: 2500 VDC
• MAXIMUM LEAKAGE CURRENT: Contact Applications Engineer
• RAMP UP TIME: 8 Seconds
• DWELL TIME: 5 Seconds
• RAMP DOWN: 8 Seconds
Please call your Application Engineer for additional details.
