Delta C200 Drive

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Wiring Details

Below image show terminal details:

Faults & Alarms

Search from below list for C200 drive faults & alarms:

Fault CodeCause & Solution
uC
Under
current
warning		Meaning: Low current.

Cause & Solution:

1. Broken motor cable
– Exclude the connection issue of the motor and its load.

2. Improper setting for the low current protection
– Set the proper settings for Pr.06-71, Pr.06-72 and Pr.06-73.

3. Low load Check the loading status.
– Make sure the loading matches the motor capacity.

4. Warning setting parameter: Pr.06-73
– 0: No function
– 1: Fault and coast to stop
– 2: Fault and ramp to stop by the 2 nd deceleration time
– 3: Warn and continue operation

5. Reset method:
– Auto “Warning” occurs when Pr.06-73=3. The “Warning” automatically clears when the output current is larger than (Pr.06-71+0.1 A).
– Manual “Error” occurs when Pr.06-73=1 and 2. You must reset manually.
c.c
cc Warning		Meaning: cc (current clamp) hardware protection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
Sw cc
warning		Cause: Software CC occurred.

Soultion: There is an hardware or software issue in drive. Need to repair or replace drive.
GFF
Ground
fault		Cause: When (one of) the output terminal(s) is grounded, short circuit current is more than 75% of AC motor drive rated current, the AC motor drive power module may be damaged.
– When the drive detects grounding short circuit on the output terminals (U/V/W), the drive closes the gate of the output immediately, the motor runs freely, and the display shows a GFF error.

NOTE: The short circuit protection is provided for AC motor drive protection, not for protection of the user.

Soultion:

1. Check the wiring connections between the AC motor drive and motor for possible short circuits, also to ground.
2. Check whether the IGBT power module is damaged.
3. Check for possible poor insulation at the output line.
occ
Short
Circuit
Fault		Cause: Short-circuit is detected between upper bridge and lower bridge of the IGBT module.

Soultion: There is an hardware or software issue in drive. Need to repair or replace drive.
oL
Over load
Fault		Cause: Overload- The AC motor drive detects excessive drive output current.

NOTE: The AC motor drive can withstand up to 150% of the rated current for a maximum of 60 seconds.

Soultion:

1. Check whether the motor is overloaded.
2. Take the next higher power AC motor drive model.
uC
Under Ampere
Fault		Meaning: Low current detection.

Fault treatment parameter Pr.06-73
– 0: No function
– 1: Fault and coast to stop
– 2: Fault and ramp to stop by the 2nd deceleration time
– 3: Warn and continue operation

Cause & Solution:

1. Motor cable disconnection
– Troubleshoot the connection between the motor and the load.

2. Improper setting of low-current protection
– Reset Pr.06-71, Pr.06-72 and Pr.06-73 to proper settings.

3. The load is too low
– Check the load status.
– Check if the motor capacity matches the load.
EF
External
fault		Cause: External Fault- This is programmable fault, comes when drive received external signal for external fault.

Soultion:

1. Input EF (N.O.) on external terminal is closed to GND. Output U, V, W will be turned off.
2. Give RESET command after fault has been cleared.

Fault treatment parameter Pr.07-20
– 0: Coast to stop
– 1: Stop by the 1 st deceleration time
– 2: Stop by the 2 nd deceleration time
– 3: Stop by the 3 rd deceleration time
– 4: Stop by the 4 th deceleration time
– 5: System deceleration
– 6: Automatic deceleration (Pr.01-46)
bb
Base block
Fault		Cause: Base Block.

Soultion:

1. When the multi-function input terminals MI1 to MI8 are set to base block and the AC motor drive stops output.
2. Press RESET after fault has been cleared.
CE01
Communication
error 1
warning		Cause & Solution: (CE1 – RS-485 Modbus illegal function code)

1. Incorrect communication command from upper unit: Check if the communication command is correct.

2. Malfunction caused by interference: Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.

3. Different communication setting from the upper unit: Check if the setting for Pr.09-02 is the same as the setting for the upper unit.

4. Disconnection or bad connection of the cable: Check the cable and replace it if necessary.

Reset method: “Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The driven resets automatically when receiving the correct function code.
CE02
Communication
error 2
warning
Cause & Solution: (CE2 – RS-485 Modbus illegal data address: When the input data address is incorrect)

1. Incorrect communication command from upper unit: Check if the communication command is correct.
2. Malfunction caused by interference: Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
3. Different communication setting from the upper unit: Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
4. Disconnection or bad connection of the cable: Check the cable and replace it if necessary

Reset method: “Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive resets automatically when receiving the correct data address.
CE03
Communication
error 3
warning		Cause & Solution: (CE3 – RS-485 Modbus illegal data value: When the length of communication data is too long)

1. Incorrect communication command from upper unit: Check if the communication command is correct.
2. Malfunction caused by interference: Verify the wiring and grounding of the communication circuit. It is recommended
to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
3. Different communication setting from the upper unit: Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
4. Disconnection or bad connection of the cable: Check the cable and replace it if necessary.

Reset method: “Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive resets automatically when receiving the correct communication data value.
CE04
Communication
error 4
warning		Cause & Solution: (CE4 – RS-485 Modbus data is written to read-only address: When the data is written to read-only address.)

1. Incorrect communication command from upper unit: Check if the communication command is correct.
2. Malfunction caused by interference: Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
3. Different communication setting from the upper unit: Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
4. Disconnection or bad connection of the cable: Check the cable and replace it if is necessary.

Reset method: “Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive resets automatically when receiving the correct written address of communication data.
CE10
Communication
error 10
warning		Cause & Solution: (CE10- RS-485 Modbus transmission time-out: When the communication time exceeds the detection time of Pr.09-03 communication time-out)

1. The upper unit does not transmit the communication command within Pr.09-03 setting time: Check if the upper unit transmits the communication command within the setting time for Pr.09-03.
2. Malfunction caused by interference: Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
3. Different communication setting from the upper unit: Check if the setting for Pr.09-02 is the same as the setting for the upper unit.
4. Disconnection or bad connection of the cable: Check the cable and replace it if necessary.

Reset method: “Warning” occurs when Pr.09-02=0 and the motor drive keeps running. The drive resets automatically when receiving the next communication packet.
CP10
Keypad
time out
Warning		Cause: Keypad transmission time-out.

Soultion:

1. Check if the wiring for the communication is correct.
2. Check if there is any wrong with the keypad.
SE1
Save error 1
warning		Cause:

Keypad COPY error 1: Keypad copy time-out- “SE1” warning occurs when the keypad does not transmit the COPY command to the drive, and does not transmit any data to the drive again in 10 ms at the time you copy the parameters to the drive.
– Communication connection error
– Keypad error
– Control board error

Solution

1. The causes of error are mostly communication problems between the keypad and control board. Potential causes include communication signal interference and the unacceptable communication command to the Slave.
2. Check if the error occurs randomly, or only occurs when copying certain parameters (the error displays on the upper right corner of the copy page)
SE2
Save error 2
warning		Keypad COPY error 2: parameter writing error- “SE2” warning occurs when writing the parameters incorrectly at the time you copy parameters to the drive. For example, you copy the new firmware version with added parameters to the drive with old firmware version.

Cause:

– Add new parameters to the new firmware version.
– Malfunction caused by interference.

Solution:

1. In this stage, the copied data has been transmitted to the Slave.
2. The Slave compares and processes the copied data, and then saves the data to the Data ROM. During the process, the data error (should be attribution error) may occur, or the data cannot be saved to EEPROM. At this time, the warning occurs.
3. It is suggested to check the status of Data ROM and remove the error causes first.
4. Verify the wiring and grounding of the main circuit, control circuit and the encoder for effective anti-interference performance.
oH1
IGBT
over-heating
warning		The AC motor drive detects IGBT overheating and exceeds the protection level of oH1 warning. (When Pr.06-15 is higher than the IGBT overheating protection level, the drive shows oH1 error without displaying oH1 warning.)
– “oH1” warning occurs when IGBT temperature is higher than Pr.06-15 setting value.

Cause & Solution:

1. Check if the ambient temperature or temperature inside the cabinet is too high, or if there is obstruction in the ventilation hole of the control cabinet.
– Check the ambient temperature.
– Regularly inspect the ventilation hole of the control cabinet.
– Change the installed place if there are heating objects, such as brake resistors, in the surroundings.
– Install/ add cooling fan or air conditioner to lower the temperature inside the cabinet.

2. Check if there is any obstruction on the heat sink or if the fan is running
-Remove the obstruction or replace the cooling fan.

3. Insufficient ventilation space
– Increase ventilation space of the drive.

4. Check if the drive matches the corresponded loading
– Decrease loading.
– Decrease the carrier wave.
– Replace with a drive with larger capacity.

5. The drive has run 100% or more of the rated output for a long time.
– Replace with a drive with larger capacity.
oH2
Over-heat 2
Warning		Cause: Heatsink overheating- Capacitance temperature exceeds cause heatsink overheating.

Soultion:

1. Ensure that the ambient temperature falls within the specified temperature range.
2. Make sure heat sink is not obstructed. Check if the fan is operating
3. Check if there is enough ventilation clearance for AC motor drive.
PID
PID feedback
error
warning		PID feedback loss (warning for analog feedback signal; works only when PID enables).
– When the analog input is lower than 4 mA (only detects analog input 4–20 mA)

Cause & Solution:

1. Loose or broken PID feedback wiring
– Tighten the terminals again.
– Replace with a new cable.

2. Feedback device malfunction
– Replace with a new feedback device.

3. Hardware error
– If the PID error still occurs after checking all the wiring, return to the factory for repair.

4. Warning setting parameter – Pr.08-09
– 0: Warn and continue operation
– 1: Fault and ramp to stop
– 2: Fault and coast to stop
– 3: Warn and operate at last frequency

5. Reset method
– Auto “Warning” occurs when Pr.08-09=0 or 3. The “Warning” automatically clears when the feedback signal is larger than 4 mA.
– Manual “Error” occurs when Pr.08-09=1 or 2. You must reset manually.
AnL
ACI analog
signal loss
warning		Analog input current loss (including all analog 4–20 mA signals)
– When the analog input is lower than 4 mA (only detects analog input 4–20 mA)

Cause & Solution:

1. Loose or broken ACI wiring
– Tighten the terminals again.
– Replace with a new cable.

2. External device error
– Replace with a new device.

3. Hardware error
– If the AnL error still occurs after checking all the wiring, return to the factory for repair.

4. Warning setting parameter: Pr.03-19
– 0: Disable
– 1: Continue operation at the last frequency (warning, keypad displays ANL)
– 2: Decelerate to 0 Hz (warning, keypad displays ANL)
– 3: Stop immediately and display “ACE”

5. Reset method
– Auto “Warning” occurs when Pr.03-19=1 or 2. The “Warning automatically clears when the analog input signal is larger than 4 mA.
– Manual “Error” occurs when Pr.03-19=3. You must reset manually.
uC
Under
current
warning		Meaning: Low current.

Cause & Solution:

1. Broken motor cable
– Exclude the connection issue of the motor and its load.

2. Improper setting for the low current protection
– Set the proper settings for Pr.06-71, Pr.06-72 and Pr.06-73.

3. Low load Check the loading status.
– Make sure the loading matches the motor capacity.

4. Warning setting parameter: Pr.06-73
– 0: No function
– 1: Fault and coast to stop
– 2: Fault and ramp to stop by the 2 nd deceleration time
– 3: Warn and continue operation

5. Reset method:
– Auto “Warning” occurs when Pr.06-73=3. The “Warning” automatically clears when the output current is larger than (Pr.06-71+0.1 A).
– Manual “Error” occurs when Pr.06-73=1 and 2. You must reset manually.
AUE
Auto-tune
error
warning		Meaning: Motor auto-tuning error.

Cause & Solution:

1. Press “STOP” key during auto-tuning
– Re-execute auto-tuning.

2. Incorrect motor capacity (too large or too small) and parameter setting
– Check motor capacity and related parameters.
– Set the correct parameters, that is Pr.01-01–Pr.01-02.
– Set Pr.01-00 larger than the motor rated frequency.

3. Incorrect motor wiring
– Check the wiring.

4. Motor shaft lock
– Remove the cause of motor shaft lock.
PGFB
PG FBK
Warning		Cause: PG feedback error.

Soultion:

1. Check if Pr.10-01 is not set to 0 when it is PG feedback control
PGL
PG Loss
Warning		Cause: PG feedback loss.

Soultion:

1. Check the wiring of the PG feedback.
oSPd
Over speed
warning		Meaning: Over speed warning.
– The encoder feedback speed > Pr.10-10.

Cause & Solution:

1. Improper setting for Pr.10-25 FOC bandwidth for speed observer.
– Decrease setting value for Pr.10-25.

2. Improper bandwidth setting for ASR speed controller.
– Increase the bandwidth setting for ASR speed controller.

3. Incorrect motor parameter setting.
– Reset motor parameter and run parameter tuning.

4. Malfunction caused by interference.
– Verify the wiring of the control circuit, and the wiring/grounding of the main circuit to prevent interference.
dAvE
Deviation
Warning		Meaning: Over speed deviation warning.

Cause & Solution:

1. Improper parameter setting for the slip error.
– Reset proper value for Pr.10-13 and Pr.10-14.

2. Improper setting for ASR parameter and acceleration/ deceleration.
– Reset ASR parameters. Set proper accel./ decel. time.

3. Accel./ Decel. time is too short.
– Reset proper accel./ decel. time.

4. Motor locked.
– Remove the causes of motor locked.

5. Mechanical brake is not released.
– Check the action timing of the system.

6. Warning setting parameter Pr.10-15
– Encoder Stall and Slip Error Action =0
0: Warn and continue operation

7. Reset method:
– “Warning” automatically clears when the drive stops
PHL
Phase loss
Warning		Meaning: Input phase loss warning.
– One of the phases outputs less than Pr.06-47

Cause & Solution:

1. Phase loss of the input power
– Verify the wiring of the main circuit.

2. Single phase power input on a three-phase model
– Use the model with voltage that matches the power.

3. The power voltage has changed
– If the power of main circuit works well, check if the MC of the main circuit is broken. Cycle the power after verifying the power is normal. If PHL still occurs, return to the factory for repair.

4. Loose wiring terminal of input power
– Tighten the terminal screws with the torque listed in the user manual.

5. Check if the input cable of three-phase power is broken Make sure the wiring is correct.
– Replace the broken part of the cable.

6. Unbalanced three-phase of the input power
– Check the status of three-phase power.

7. Warning setting parameter Pr.06-45
– Output Phase Loss Detection Action (OPHL) =0
0: Warn and continue operation
ot1
Over-torque 1
Warning		Meaning: Over-torque 1 warning.

Cause & Solution:

1. Incorrect parameter setting
– Configure the settings for Pr.06-07 and Pr.06-08 again.

2. Mechanical error (e.g. mechanical lock due to over-torque)
– Remove the causes of malfunction.

3. The load is too large
– Decrease the loading.
– Replace with a motor with larger capacity.

4. Accel./ Decel. time and working cycle is too short
– Increase the setting values for Pr.01-12–01-19 (accel./ decel. time)

5. V/F voltage is too high
– Adjust the V/F curve (Motor 1, Pr.01-01–01-08), especially the setting value for the mid-point voltage (if the mid-point voltage is set too small, the load capacity decreases at low-speed).

6. The motor capacity is too small
– Replace with a motor with larger capacity.

7. Overload during low-speed operation
– Decrease the loading during low-speed operation.
– Increase the motor capacity.

8. The torque compensation is too large
– Adjust the torque compensation value (Pr.07-26 torque compensation gain) until the output current decreases and the motor does not stall.

9. Improper parameter settings for the speed tracking function (including restart after momentary power loss and restart after fault)
– Correct the parameter settings for speed tracking.
– Start the speed tracking function.
– Adjust the maximum current for Pr.07-09 speed tracking.

10. Incorrect parameter setting
– Configure the settings for Pr.06-07 and Pr.06-08 again.

11. Warning setting parameter Pr.06-06 Over-torque Detection Selection (Motor 1) =1 or 3
– 0: No function
– 1: Continue operation after over-torque detection during constant speed operation
– 2: Stop after over-torque detection during constant speed operation
– 3: Continue operation after over-torque detection during RUN
– 4: Stop after over-torque detection during RUN
ot2
Over-torque 2
Warning		Meaning: Over-torque 2 warning.

Cause & Solution:

1. Incorrect parameter setting
– Configure the settings for Pr.06-10 and Pr.06-11

2. Mechanical error (e.g. mechanical lock due to over-torque)
– Remove the causes of malfunction.

3. The load is too large
– Decrease the loading.
– Replace with a motor with larger capacity.

4. Accel./ Decel. time and working cycle is too short
– Increase the setting values for Pr.01-12–01-19 (accel./ decel. time)

5. V/F voltage is too high
– Adjust the V/F curve (Motor 2, Pr.01-35–01-42), especially the setting value for the mid-point voltage (if the mid-point voltage is set too small, the load capacity decreases at low-speed).

6. Warning setting parameter Pr.06-09 Over-torque Detection Selection (Motor 2) =1 or 3
– 0: No function
– 1: Continue operation after over-torque detection during constant speed operation
– 2: Stop after over-torque detection during constant speed operation
– 3: Continue operation after over-torque detection during RUN
– 4: Stop after over-torque detection during RUN
oH3
Motor
over-heating
Warning		Cause: Motor overheating – The AC motor drive detects that the internal temperature exceeds Pr.06-30 (PTC level)

Soultion:

1. Make sure that the motor is not obstructed.
2. Ensure that the ambient temperature falls within the specified temperature range.
3. Take the next higher power AC motor drive model.
c.c
cc Warning		Meaning: cc (current clamp) hardware protection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
oSL
Over slip
warning		Meaning: Over slip warning- By using the maximum slip (Pr.10-29) as the base, when the drive outputs at constant speed, and the F>H or F – When the drive outputs at constant speed, and F>H or F

Cause & Solution:

1. Check if the motor parameter is correct
– Check the motor parameter.

2. The load is too large
– Decrease the loading.

3. Check if the settings for Pr.07-29, Pr.07-30 and Pr.10-29 are properly set
– Check the parameter settings for oSL protection.

4. Warning setting parameter Pr.07-31=0 Warning
– 0: Warn and continue operation
– 1: Fault and ramp to stop
– 2: Fault and coast to stop
– 3: No warning

5. Reset method: When Pr.07-31=0 and when the drive outputs at constant speed, and F>H or F
tUn
Auto tuning
Warning		Meaning: Parameter auto-tuning is processing. When running auto-tuning, the keypad displays “tUn”.
– When running Pr.05-00 motor parameter auto-tuning, the keypad displays “tUn”.

Cause & Solution:

1. The motor parameter is running auto-tuning
– When the auto-tuning is finished, the warning automatically clears.

2. Reset method: When auto-tuning is finished and no error occurs, the warning automatically clears.
AHSP
Auto/Hand
STOP		Cause: Auto/Hand on switching STOP.
PGrE
PG Ref input
Error
warning		Cause: PG Ref input error.
oPHL
Output
phase loss
warning		Meaning: Output phase loss of the drive. This fault also comes when you run drive without motor or one of phase is not connected.

Cause & Solution:

1. Unbalanced three-phase impedance of the motor Replace the motor.

2. Check if the wiring is incorrect Check the cable.
– Replace the cable.

3. Check if the motor is a single-phase motor
– Choose a three-phase motor.

4. Check if the current sensor is broken
– Check if the control board cable is loose. If yes, reconnect the cable and run the drive to test. If the error still occurs, return to the factory for repair.
– Check if the three-phase current is balanced with a current clamp meter. If the current is balanced and the oPHL error still shows on the display, then need to repair or replace drive.

5. Check if capacity of the drive is larger than the motor
– Choose a drive’s capacity matches a motor’s.

6. Warning setting parameter Pr.06-45
– 0: Warn and continue operation
– 1: Fault and ramp to stop
– 2: Fault and coast to stop
– 3: No warning
Sw cc
warning		Cause: Software CC occurred.

Soultion: There is an hardware or software issue in drive. Need to repair or replace drive.
SE3
Copy model
error 3
warning		Meaning– Keypad COPY error 3: copy model error
– “SE3” warning occurs when different drive identity codes are found during copying parameters.
– Keypad copy between different power range drive

Cause & Solution:

1. Keypad copy between different power range drives.
– It is mainly to prevent parameter copies between different HP/models.
CGdn
CANopen
guarding
time-out
warning		Meaning: CANopen guarding time-out 1 – When CANopen Node Guarding detects that one of the slaves does not respond, the CGdn error displays. The upper unit sets the factor and time during configuration.

Cause & Solution:

1. The guarding time is too short, or less detection times
– Increase the guarding time (Index 100C) and detection times.

2. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– Make sure the communication circuit is wired in series.
– Use CANopen cable or add terminating resistance.
CHbn
CANopen
heartbeat
t-out warning		Meaning: CANopen heartbeat error- When CANopen Heartbeat detects that one of the slaves does not response, the CHbn error shows. The upper unit sets the confirming time of producer and consumer during configuration.

Cause & Solution(Heartbeat T-out):

1. The heartbeat time is too short
– Increase heartbeat time (Index 1016).

2. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– Make sure the communication circuit is wired in series.
– Use CANopen cable or add terminating resistance.

3. Communication cable is broken or bad connected
– Check or replace the communication cable.
CSYn
SYNC T-out
warning		Cause: CAN synchrony time-out.

Solution:

1. Check wiring and connection.
CbFn
CANopen
bus off
warning		Meaning: CANopen BUS off error

1. Hardware
– When CANopen card is not installed, the CbFn warning occurs.
2. Software
– When the master receives wrong communication package, the CbFn warning occurs.
– Too much interference on BUS
– The master receives wrong package when the CAN_H and CAN_L communication cables are short, CbFn warning occurs.

Cause & Solution:

1. Check if the CANopen card is installed
– Make sure the CANopen card is installed.

2. Check if the CANopen speed is correct
– Reset CANopen speed (Pr.09-37)

3. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– Make sure the communication circuit is wired in series.
– Use CANopen cable or add terminating resistance.

4. Communication cable is broken or bad connected
– Check or replace the communication cable.
CIdn
CAN/S Idx
exceed
Warning		Meaning: CANopen index error- CANopen communication Index error.

Cause & Solution:

1. Incorrect setting of CANopen index- reset index
CAN/S
FRAM fail
warning		Meaning: CANopen memory error (CFrn CANopen memory error)- When you update the firmware version of the control board, the FRAM internal data does not change, then CFrn warning occurs.

Cause & Solution:

– CANopen internal memory error
1. Disable CANopen (Pr.09-36=0)
2. Reset CANopen (Pr.00-20=7)
3. Reset CANopen station address (Pr.09-36)
CSdn
SDO T-out
warning		Meaning: CAN SDO transmission time-out (only shows on master station)- When the CANopen master transmits a SDO command, and the slave response “times-out”, CSdn warning occurs.

Cause & Solution:

1. Slave is not connected
– Connect the slave and CANopen BUS.

2. The synchronous cycle is set too short
– Increase the synchronous time (Index 1006)

3. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– Make sure the communication circuit is wired in series.
– Use CANopen cable or add terminating resistance.

4. Disconnection or bad connection of the communication cable
– Check the status of the cable, or replace the cable

Reset method: When the master resends a SDO command and receives the response, the warning automatically clears.
CSbn
Buf Overflow
warning		Meaning: CANopen SDO receives register overflow- The upper unit sends too much SDO at one time and causes buffer overflow.

Cause & Solution:

1. Too much SDO from the upper unit at one time
– Check if the master sends too much SDO command. Make sure the master sends the SDO command according to the command format.

2. Reset method: The upper unit sends a reset package to clear the warning.
Cbtn
Boot up
fault
warning		Meaning: CANopen start-up error warning(CAN boot up error)- When the amount of sent error messages reach 255.

Cause & Solution:

1. Serious interference on hardware
– Verify if the grounding, terminating resistance and bus line are properly installed.
2. Incorrect setting for communication speed
– Verify the setting for communication speed.
3. The communication card is not connected, or the card is loose
– Make sure the communication card is connected to the drive.
CPtn
Error
Protocol
warning		Meaning: CANopen protocol format error- The slave detects that communication data from the upper unit cannot be recognized, and then CPtn warning occurs.

Cause & Solution:

1. The upper unit sends incorrect communication packet
– Make sure the master sends the packet based on CANopen DS301 standard command format.
Plra
RTC Adjust
warning		Adjust RTC
PLiC
Inner COM Error
warning		InnerCOM Error.
Plrt
Keypad RTC
time out
warning		Keypad RTC time out.
PLod
PLC opposite
defect
warning		Meaning: PLC download error warning(Opposite data defect)- During PLC downloading, the program source code detects incorrect address (e.g. the address exceeds the range), then the PLod warning occurs.

Cause & Solution:

1. Incorrect data number is found when downloading the PLC program
– Use the correct data number.

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLSv
Save memory
defect
warning		Meaning: Data error during PLC operation(Saving memory is incorrect)- The program detects incorrect written address (e.g. the address exceeds the range) during PLC operation, then the PLSv warning occurs.

Cause & Solution:

1. An incorrect written address is detected during PLC operation
– Make sure the written address is correct and download the program again.

2. Reset method:
– Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLdA
Data defect
warning		Meaning: Data error during PLC operation(Data code defect)- The program detects incorrect written address when translating the program source code (e.g. the address exceeds the range) during PLC downloading, then PLdA warning occurs.

Cause & Solution:

1. During PLC operation, the external Modbus has written/read incorrect data to internal PLC program
– Check if the upper unit transmits the correct command

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLFn
Function
defect
warning		Meaning: PLC download function code error- The program detects incorrect command (unsupported command) during PLC downloading, then PLFn warning occurs.

Cause & Solution:

1. Unsupported command has used while downloading the program
– Check if the firmware of the drive is the old version

2. Reset method– Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLor
PLC buffer
overflow
warning		Meaning: PLC register overflow- When PLC runs the last command and the command exceeds the maximum capacity of the program, then PLor warning occurs.

Cause & Solution:

1. The program detects internal source code error during PLC operation
– 1. Disable PLC
– 2. Reset the PLC program (Pr.00-02=6)
– 3. Enable PLC
– 4. Re-download the PLC program

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLFF
Function
defect
warning		Meaning: Function code error during PLC operation- The program detects incorrect command (unsupported command) during PLC operation, then PLFF warning occurs.

Cause & Solution:

1. The PLC runs an incorrect command during operation
– When starting the PLC function and there is no program in the PLC, the PLFF warning occurs. This is a normal warning, please download the program.

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLSn
Check sum
error
warning		Meaning: PLC checksum error- PLC checksum error is detected after the drive is powered on, then PLSn warning occurs.

Cause & Solution:

1. The program detects checksum error during PLC operation
– 1. Disable PLC
– 2. Reset the PLC program (Pr.00-02=6)
– 3. Enable PLC
– 4. Re-download the PLC program

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLEd
No end
command
warning		Meaning: PLC end command is missing- The “End” command is missing until the last command is executed, the PLEd warning occurs.

Cause & Solution:

1. There is no “END” command during PLC operation
– 1. Disable PLC
– 2. Reset the PLC program (Pr.00-02=6)
– 3. Enable PLC
– 4. Re-download the PLC program

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLCr
PLC MCR
error
warning		Meaning: PLC MCR command error- The MC command is detected during PLC operation, but there is no corresponding MCR command, then the PLCr warning occurs.

Cause & Solution:

1. The MC command is continuously used for more than 9 times
– The MC command cannot be used continuously for 9 times.
– Check and reset the program, then re-download the program.

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLdF
PLC download
fail
warning		Meaning: PLC download failure- PLC download failure due to momentary power loss during the downloading. After the power is ON again, the PLdF warning occurs.

Cause & Solution:

1. PLC download is forced to stop, so the written program is incomplete.
– Check if there is any error in the program and re-download the PLC program.

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PLSF
PLC scan
time fail
warning		Meaning: PLC scan time exceeds the maximum allowable time- When the PLC scan time exceeds the maximum allowable time (400 ms), the PLSF warning occurs.

Cause & Solution:

1. The PLC scan time exceeds the maximum allowable time (400 ms).
– Check if the source code is correct and re-download the program.

2. Reset method: Check if the program is correct and download the program again. If the fault does not exist, the warning automatically clears.
PCGd
CAN/M Guard
error
Warning		PLC CAN Master CANopen Guarding Tome Out
PCbF
CAN/M bus off
Warning		PLC CAN Master Can Bus off
PCnL
CAN/M Node
Lack
Warning		PLC CAN Master node lack
PCCt
CAN/M Cycle
time
warning		PLC CAN Master cycle time
PCSF
CAN/M SDO
over
Warning		PLC CAN Master TX buffer overflow SDO, NMT, GUD
PCSd
CAN/M Sdo
Tout
Warning		PLC CAN Master SDO transfer time out
PCAd
CAN/M Addres
set
Warning		CAN Master Slave address set fail
ECid
ExCom ID
fail
warning		Meaning:
– Duplicate MAC ID error
– Node address setting error

Cause & Solution:

1. The setting address exceeds the range (0–63)
– Check the address setting of the communication card (Pr.09-70)

2. The speed setting exceeds the range
– Standard: 0–2; non-standard: 0–7

3. The address is duplicated with other nodes on the
– BUS Reset the address
ECLv
ExCom pwr
loss
warning		Meaning: Low voltage of the communication card- The 5V power that the drive provides to the communication card is too low.

Cause & Solution:

1. The 5V power that the drive provides to the communication card is too low
– Use the same communication card for other MS300 drives to check if the ECLv warning still occurs. If yes, replace with a new communication card; if not, replace the drive.
– Use another communication card to test if the ECLv warning still occurs on the same drive. If not, replace the card; if yes, replace the drive.

2. The card is loose.
– Make sure the communication card is well inserted
ECtt
ExCom test
mode
warning		Meaning: The communication card is in the test mode- The communication card is in the test mode.

Cause & Solution:

1. Communication command error.
– Cycle the power

2. Reset method
– Cycle the power and enter the normal mode
ECbF
ExCom Bus
off
warning		Meaning: The communication card detects too many errors in the BUS, then enters the BUS-OFF status and stop communicating.
– When the drive detects BUS-off (for DeviceNet)

Cause & Solution:

1. Poor connection of the cable
– Re-connect the cable

2. Bad quality of the cable
– Replace the cable
ECnP
ExCom no
power
warning		Meaning: There is no power supply of the DeviceNet- When there is no power supply of the DeviceNet.

Cause & Solution:

1. The drive detects that DeviceNet has no power
– Check if the cable and power is normal.

2. Reset method
– Cycle the power.
ECFF
ExCom factory
defect
warning		Meaning: Factory default setting error.

Cause & Solution:

1. Factory default setting error
– Use DCISoft to reset to the default value.

2. Reset method
– Cycle the power.
ECiF
ExCom inner
error
warning		Meaning: Serious internal error- Internal memory saving error.

Cause & Solution:

1. Noise interference
– Verify the wiring of the control circuit, and the wiring/grounding of the main circuit to prevent interference.
– Cycle the power.

2. The memory is broken
– Reset to the default value and check if the error still exists.
– If yes, replace the communication card.
ECio
ExCom IONet
brk
warning		IO connection break off- check connection
ECPP
ExCom Pr
data
warning		Profibus parameter data error – Check communication parameter
ECPi
ExCom Conf
data
warning		Meaning: Profibus configuration data error.

Cause & Solution:

1. Incorrect GSD file
– Get the correct GSD file from the software
ECEF
ExCom Link
fail
warning		Meaning: The Ethernet cable is not connected.

Cause & Solution:

1. The Ethernet cable is loose
– Re-connect the cable

2. Bad quality of the Ethernet cable
– Replace the cable
ECto
ExCom Inr
T-out
warning		Meaning: Communication time-out for the communication card and the upper unit.

Cause & Solution:

1. Communication card is not connected with the upper unit
– Check if the connection of the communication cable is correct

2. Communication error of the upper unit
– Check if the communication of the upper unit is normal

3. Reset condition CMC-EC01: auto-resets when the communication with the upper unit is back to normal
ECCS
ExCom Inr
CRC
warning		Meaning: Checksum error for the communication card and the drive.

Cause & Solution:

1. Noise interference
– Verify the wiring of the control circuit, and the wiring/grounding of the main circuit to prevent interference.
ECrF
ExCom Return
defect
warning		Meaning: Communication card returns to the default setting- Communication card returns to the default setting.

Cause & Solution:

1. Communication card is returning to default setting
– No actions required.
ECo0
ExCom MTC
P over
warning		Meaning: Modbus TCP exceeds the maximum communication value.

Cause & Solution:

1. The Master communication value exceeds the allowable number of the communication cards
– Decrease the Master communication value

2. Connection occupied due to not disconnecting the Modbus TPC while the upper unit is connected without communicating.
– Revise the program of the upper unit to disconnect the connection while the communication is not used for a long time.

3. A new Modbus TCP connection is built whenever the upper unit is connected to the communication card, which causes connection occupied.
– Revise the program of the upper unit to use the same Modbus TCP connection when connecting to the same communication card.
ECo1
ExCom EIP
over
warning		Meaning: Ethernet/IP exceeds the maximum communication value.

Cause & Solution:

1. The Master communication value exceeds the allowable number of the communication cards
– Decrease the Master communication value

2. Connection occupied due to not disconnecting the Modbus TPC while the upper unit is connected without communicating.
– Revise the program of the upper unit to disconnect the connection while the communication is not used for a long time.

3. A new Modbus TCP connection is built whenever the upper unit is connected to the communication card, which causes connection occupied.
– Revise the program of the upper unit to use the same Modbus TCP connection when connecting to the same communication card.
ECiP
ExCom IP
fail
warning		Meaning: IP setting error.

Cause & Solution:

1. IP conflict
– Reset IP

2. DHCP IP configuration error
– Contact MIS to check if DHCP Server works normally
EC3F
ExCom Mail
fail
warning		Meaning– Mail warning: Alarm mail is sent when the condition that the alarm set for the communication card was met.
– When the condition that the alarm set for the communication card was met.

Cause & Solution:

1. Communication card establishes alarm conditions
– No actions required
Ecby
ExCom Busy
warning		Meaning– Communication card busy: too many packets are received.

Cause & Solution:

1. Too many communication packets for the communication card to process
– Decrease communication packets
CP LP
Copy PLC
PassWord
warning		Meaning: Copy PLC password error. When processing PLC copy and the PLC password is incorrect, the CPLP warning occurs.
– PLC password is incorrect.

Cause & Solution:

1. PLC password is incorrect
– Reset and enter the correct PLC password
CPL0
Copy PLC
Mode Rd
warning		Meaning: Copy PLC read mode error- Incorrect process when copying the PLC read mode.

Cause & Solution:

1. Using incorrect process to copy the PLC read mode
– Cycle the power and copy the PLC read mode again
CPL1
Copy PLC
Mode Wt
warning		Meaning: Copy PLC write mode error- Incorrect process when copying the PLC write mode.

Cause & Solution:

1. Using incorrect process to copy the PLC write mode
– Cycle the power and copy the PLC write mode again
CPLv
Copy PLC
Version
warning		Meaning: Copy PLC version error- When a C200 built-in PLC is copied to the C200 drive, the CPLv warning occurs.

Cause & Solution:

1. A non-MS300 PLC program is copied to C200
– Check if the copied PLC program is for C200.
– Use the correct C200 PLC program.
CPLS
Copy PLC:
size
warning		Meaning: Copy PLC capacity error.

Cause & Solution:

1. The PLC program copied to C200 exceeds the allowable capacity
– Check if the copied PLC program is for C200
– Use the correct capacity for the C200 PLC program
CPLF
Copy PLC:
PLC function
warning		Meaning: Copy PLC function must be executed when PLC is disabled.

Cause & Solution:

1. PLC function is enabled when it running PLC copy
– Disable the PLC function first, and then run the PLC copy function again.
CPLt
Copy PLC:
time-out
warning		Copy PLC time out
ictn
InrCOM
time-out		Meaning: Internal communication time-out- When Pr.09-31= (-1) – (-10) (no -9) and the internal communication between Master and Slave is abnormal, the ictn warning occurs.

Cause & Solution:


1. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.

2. Different communication setting from the upper unit
– Check if the setting for Pr.09-02 is the same as the setting for the upper unit

3. Disconnection or bad connection of the cable
– Check the cable and replace it if necessary.
ocA
Oc at accel
Fault		Cause: Output current exceeds three times of the rated current during acceleration.(Over-current during acceleration)
– When ocA occurs, the drive closes the gate of the output immediately, the motor runs freely, and the display shows an ocA error.

Cause & Solution:

1. Acceleration time is too short
– Increase the acceleration time
– Increase the acceleration time of S-curve
– Set auto-acceleration and auto-deceleration parameter (Pr.01-44)
– Set over-current stall prevention function (Pr.06-03)
– Replace the drive with a larger capacity model.

2. Short circuit at motor output due to poor insulation wiring
– Check the motor cable and remove causes of the short circuits, or replace the cable before turning on the power.

3. Check for possible burnout or aging insulation of the motor
– Check the motor insulation value with megger. Replace the motor if the insulation is poor.

4. The load is too large.
– Check if the output current during the whole working process exceeds the AC motor drive’s rated current. If yes, replace the AC motor drive with a larger capacity model.

5. Impulsive change of the load
– Reduce the load or increase the capacity of AC motor drive.

6. Use special motor or motor with larger capacity than the drive
– Check the motor capacity (the rated current on the motor’s nameplate should ≤ the rated current of the drive)

7. Use ON/OFF controller of an electromagnetic contactor at the output (U/V/W) of the drive
– Check the action timing of the contactor and make sure it is not turned ON/OFF when the drive outputs the voltage.

8. V/F curve setting error
– Adjust the V/F curve setting and frequency/voltage. When the fault occurs, and the frequency voltage is too high, reduce the voltage.

9. Torque compensation is too large
– Adjust the torque compensation (refer to Pr.07-26 torque compensation gain) until the output current reduces and the motor does not stall.

10. Malfunction caused by interference
– Verify the wiring of the control circuit and the wiring/grounding of the main circuit to prevent interference.

11. The motor starts when in free run Enable the speed tracking during start-up of Pr.07-12. Improper parameter settings for the speed tracking function (including restart after momentary power loss and restart after fault)
Correct the parameter settings for speed tracking.
– 1. Start the speed tracking function.
– 2. Adjust the maximum current for Pr.07-09 speed tracking.

12. Incorrect combination of control mode and used motor
– Check the settings for Pr.00-11 control mode:
– 1. For IM, Pr.00-11=0, 1, 2, 3, 5
– 2. For PM, Pr.00-11=4, 6, or 7

13 The length of motor cable is too long
– Increase the AC motor drive’s capacity.
– Install AC reactor(s) on the output side (U/V/W).

14 Hardware failure
– The ocA occurs due to the short circuit or ground fault at the output side of the drive.
– Check for possible short circuits between terminals with the electric meter: B1 corresponds to U, V and W; DC- corresponds to U, V and W; corresponds to U, V and W.
– If short circuit occurs, return to the factory for repair.

15. Check if the setting for stall prevention is correct
– Set the stall prevention to the proper value.
ocd
Oc at
decel		Cause: Over-current during deceleration (Output current exceeds triple rated current during deceleration.)

Soultion:

1. Short-circuit at motor output: Check for possible poor insulation at the output line.
2. Deceleration Time too short: Increase the Deceleration Time.
3. AC motor drive output power is too small: Replace the AC motor drive with the next higher power model.
ocn
Oc at
normal SPD		Cause: Over-current during steady state operation (Output current exceeds triple rated current during constant speed.)

Soultion:

1. Short-circuit at motor output: Check for possible poor insulation at the output line.
2. Sudden increase in motor loading: Check for possible motor stall.
3. AC motor drive output power is too small: Replace the AC motor drive with the next higher power model.
GFF
Ground
fault		Cause: When (one of) the output terminal(s) is grounded, short circuit current is more than 75% of AC motor drive rated current, the AC motor drive power module may be damaged.
– When the drive detects grounding short circuit on the output terminals (U/V/W), the drive closes the gate of the output immediately, the motor runs freely, and the display shows a GFF error.

NOTE: The short circuit protection is provided for AC motor drive protection, not for protection of the user.

Soultion:

1. Check the wiring connections between the AC motor drive and motor for possible short circuits, also to ground.
2. Check whether the IGBT power module is damaged.
3. Check for possible poor insulation at the output line.
occ
Short
Circuit
Fault		Cause: Short-circuit is detected between upper bridge and lower bridge of the IGBT module.

Soultion: There is an hardware or software issue in drive. Need to repair or replace drive.
ocS
Over-current
OC at stop
Fault		Meaning: Over-current or hardware failure in current detection at stop.

Cause & Solution:

1. Malfunction caused by interference
– Verify the wiring of the control circuit and the wiring/grounding of the main circuit to prevent interference.

2. Hardware failure: There is an hardware or software issue in drive. Need to repair or replace drive.
ovA/ouA
Ov at accel
Fault		Cause: DC BUS over-voltage during acceleration
(230V: DC 450V; 460V: DC 900V)

Soultion:

1. Check if the input voltage falls within the rated AC motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please increase the Deceleration Time or add an optional brake resistor.
ovd/oud
Ov at decel
Fault		Cause: DC BUS over-voltage during deceleration (230V: DC 450V; 460V: DC 900V)

Soultion:

1. Check if the input voltage falls within the rated AC motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please increase the Deceleration Time or add an optional brake resistor.
ovn/oun
Ov at
normal SPD
Fault		Cause: DC BUS over-voltage during constant speed (230V: DC 450V; 460V: DC 900V)

Soultion:

1. Check if the input voltage falls within the rated AC motor drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please increase the Deceleration Time or add an optional brake resistor.
ovS/ouS
Ov at stop
Fault		Cause: DC BUS over-voltage at stop

Soultion:

1. Check if the input voltage falls within the rated AC motor drive input voltage range.
2. Check for possible voltage transients.
LvA/LuA
Lv at accel
Fault		Cause: DC BUS voltage is less than Pr.06-00 during acceleration.

Soultion:

1. Check if the input voltage is normal
2. Check for possible sudden load
Lvd/Lud
Lv at decel
Fault		Cause: DC BUS voltage is less than Pr.06-00 during deceleration.

Soultion:

1. Check if the input voltage is normal
2. Check for possible sudden load
Lvn/Lun
Lv at
normal SPD
Fault		Cause: DC BUS voltage is less than Pr.06-00 during constant speed.

Soultion:

1. Check if the input voltage is normal
2. Check for possible sudden load
LvS/Lus
Lv at stop
fault		Cause: Low voltage at stop

Soultion:

1. Check if the input voltage is normal
2. Check for possible sudden load
OrP
Phase
lacked
fault		Meaning: Phase loss of power input- When DC bus ripple is higher than the protection level, and the output current exceeds 50% of the rated current, the drive starts counting. When the counting value reaches the upper limit, an orP error occurs.

Cause & Solution:

1. Phase loss of input power
– Correctly install the wiring of the main circuit power.

2. Single phase power input to three-phase model
– Choose the model whose power matches the voltage.

3. Power voltage changes
– If the main circuit power works normally, verify the main circuit.
– Cycle the power after checking the power, if orP error still exists, then need to repair drive.

4. Loose wiring terminal of input power
– Tighten the terminal screws according to the torque described in the user manual.

5. The input cable of three-phase power is cut off Wire correctly.
– Replace the cut off cable.

6. Input power voltage changes too much
– Verify the setting value for Pr.06-50 Time for Input Phase Loss Detection and Pr.06-52 Ripple of Input Phase Loss

7. Unbalanced three-phase of input power
– Check the power three-phase status.
oH1
IGBT over
heat fault		Cause: IGBT overheating- IGBT temperature exceeds protection level 40 to100HP: 100 oC

Soultion:

1. Ensure that the ambient temperature falls within the specified temperature range.
2. Make sure that the ventilation holes are not obstructed.
3. Remove any foreign objects from the heatsinks and check for possible dirty heat sink fins.
4. Check the fan and clean it.
5. Provide enough spacing for adequate ventilation.
oH2
CAP over
heat fault		Cause: Heatsink overheating- Capacitance temperature exceeds cause heatsink overheating.

Soultion:

1. Ensure that the ambient temperature falls within the specified temperature range.
2. Make sure heat sink is not obstructed. Check if the fan is operating
3. Check if there is enough ventilation clearance for AC motor drive.
tH1o
Thermo 1
open Fault		Cause: Motor 1 overload.

Soultion:

1. Check whether the motor is overloaded.
2. Check whether the rated current of motor (Pr.05-01) is suitable
3. Take the next higher power AC motor drive model.
tH2o
Thermo 2
open Fault		Cause: Motor overheating The AC motor drive detects that the internal temperature exceeds Pr.06-30 (PTC level)

Soultion:

1. Make sure that the motor is not obstructed.
2. Ensure that the ambient temperature falls within the specified temperature range.
3. Take the next higher power AC motor drive model.
oL
Over load
Fault		Cause: Overload- The AC motor drive detects excessive drive output current.

NOTE: The AC motor drive can withstand up to 150% of the rated current for a maximum of 60 seconds.

Soultion:

1. Check whether the motor is overloaded.
2. Take the next higher power AC motor drive model.
EoL1
Thermal
relay 1
Fault		Cause: Electronic Thermal Relay 1 Protection.

Soultion:

1. Check whether the motor is overloaded.
2. Check whether motor rated current setting (Pr.05-01) is suitable
3. Check electronic thermal relay function
4. Take the next higher power AC motor drive model.
EoL2
Thermal
relay 2
Fault		Cause: Electronic Thermal Relay 2 Protection.

Soultion:

1. Check whether the motor is overloaded.
2. Check whether motor rated current setting (Pr.05-01) is suitable
3. Check electronic thermal relay function
4. Take the next higher power AC motor drive model.
oH3
Motor over
heat Fault		Cause: Motor overheating- The AC motor drive detecting internal temperature exceeds the setting of Pr.06-30 (PTC level).

Soultion:

1. Make sure that the motor is not obstructed.
2. Ensure that the ambient temperature falls within the specified temperature range.
3. Take the next higher power AC motor drive model.
ot1
Over
torque 1
Fault		Cause: When output current exceeds the over-torque detection level (Pr.06-07 or Pr.06-10) and exceeds over-torque detection (Pr.06-08 or Pr.06-11) and it is set to 2 or 4 in Pr.06-06 or Pr.06-09.

Soultion:

1. Check whether the motor is overloaded.
2. Check whether motor rated current setting (Pr.05-01) is suitable
3. Take the next higher power AC motor drive model.
ot2
Over
torque 2
Fault		Cause: When output current exceeds the over-torque detection level (Pr.06-07 or Pr.06-10) and exceeds over-torque detection (Pr.06-08 or Pr.06-11) and it is set to 2 or 4 in Pr.06-06 or Pr.06-09.

Soultion:

1. Check whether the motor is overloaded.
2. Check whether motor rated current setting (Pr.05-01) is suitable
3. Take the next higher power AC motor drive model.
uC
Under Ampere
Fault		Meaning: Low current detection.

Fault treatment parameter Pr.06-73
– 0: No function
– 1: Fault and coast to stop
– 2: Fault and ramp to stop by the 2nd deceleration time
– 3: Warn and continue operation

Cause & Solution:

1. Motor cable disconnection
– Troubleshoot the connection between the motor and the load.

2. Improper setting of low-current protection
– Reset Pr.06-71, Pr.06-72 and Pr.06-73 to proper settings.

3. The load is too low
– Check the load status.
– Check if the motor capacity matches the load.
LMIT
Limit Error
Fault		Limit switching error
cF1
EEPROM
write error
Fault		Cause: Internal EEPROM can not be programmed.

Soultion:

1. Press “RESET” key to the factory setting.
2. There is an hardware or software issue in drive. Need to repair or replace drive.
cF2
EEPROM read
error
Fault		Cause: Internal EEPROM can not be read.

Soultion:

1. Press “RESET” key to the factory setting.
2. There is an hardware or software issue in drive. Need to repair or replace drive.
cd1
Ias sensor
error
Fault		Meaning: U-phase current detection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. Check drive IGBT using multimeter.

3. If fault not reset then there is hardware issue in drive need to repair or replace drive.
cd2
Ibs sensor
error
Fault		Meaning: V-phase current detection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. Check drive IGBT using multimeter.

3. If fault not reset then there is hardware issue in drive need to repair or replace drive.
cd3
Ics sensor
error
Fault		Meaning: W-phase current detection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. Check drive IGBT using multimeter.

3. If fault not reset then there is hardware issue in drive need to repair or replace drive.
Hd0
cc HW
error
Fault		Meaning: cc (current clamp) hardware protection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
Hd1
Oc HW error
Fault		Meaning: oc hardware protection error when power is ON.

Cause & Solution:

1. Hardware failure
– Cycle the power.

2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
Hd2
Ov HW error
Fault		Cause: OV hardware error

Soultion:

1. Re-power on to try it.
2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
Hd3
occ HW
error
Fault		Cause: Occ hardware error

Soultion:

1. Reboots the power.
2. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
AUE
Auto tuning
error
Fault		Meaning: Motor auto-tuning error.

Cause & Solution:

1. Press “STOP” key during auto-tuning
– Re-execute auto-tuning.

2. Incorrect motor capacity (too large or too small) and parameter setting
– Check motor capacity and related parameters.

3. Incorrect motor wiring
– Check the wiring.

4. Motor shaft lock
– Remove the cause of motor shaft lock.
AFE
PID Fbk
error
Fault		Cause: PID loss (ACI)- PID feedback loss (analog feedback signal is only valid when the PID function is enabled).
– When the analog input < 4 mA (only detects 4–20 mA analog input).

Soultion:

1. Check the wiring of the PID feedback
2. Check the PID parameters settings
PGF1
PG Fbk
error
Fault 		Cause: PG feedback error.

Soultion:

1. Check if Pr.10-01 is not set to 0 when it is PG feedback control.
PGF2
PG Fbk
loss
Fault 		Cause: PG feedback loss.

Soultion:

1. Check the wiring of the PG feedback.
PGF3
PG Fbk
over SPD
Fault		Cause: PG feedback stall- Under PG mode, when the motor frequency exceeds the encoder observer stall level and starts to count, the fault time is longer than the detection time of encoder observer stall, then PGF3 fault occurs.

Soultion:

1. Check the wiring of the PG feedback
2. Check if the setting of PI gain and deceleration is suitable
3. After this same fault comes then there is an hardware issue in drive need to repair or replace drive.
PGF4
PG Fbk
deviate
Fault		Cause: PG slip error- Under PG mode, when the motor frequency exceeds encoder observer slip range (Pr.10-13) and starts to count, the fault time is longer than the detection time of encoder observer slip (Pr.10-14), PGF4 fault occurs.

Soultion:

1. Check the wiring of the PG feedback
2. Check if the setting of PI gain and deceleration is suitable
3. Return to the factory

Fault treatment parameter Pr.10-15
– 0: Warn and continue operation
– 1: Fault and ramp to stop
– 2: Fault and coast to stop
ACE
ACI loss
Fault		Cause: ACI loss- Analog input loss (including all the 4–20 mA analog signal)
– When the analog input is < 4 mA (only detects 4–20 mA analog input)

Soultion:

1. Check the ACI wiring
2. Check if the ACI signal is less than 4mA

Fault treatment parameter Pr.03-19
– 0: Disable
– 1: Continue operation at the last frequency (warning, ANL is displayed on the keypad)
– 2: Decelerate to stop (warning, ANL is displayed on the keypad)
– 3: Stop immediately and display ACE
EF
External
fault		Cause: External Fault- This is programmable fault, comes when drive received external signal for external fault.

Soultion:

1. Input EF (N.O.) on external terminal is closed to GND. Output U, V, W will be turned off.
2. Give RESET command after fault has been cleared.

Fault treatment parameter Pr.07-20
– 0: Coast to stop
– 1: Stop by the 1 st deceleration time
– 2: Stop by the 2 nd deceleration time
– 3: Stop by the 3 rd deceleration time
– 4: Stop by the 4 th deceleration time
– 5: System deceleration
– 6: Automatic deceleration (Pr.01-46)
EF1
Emergency
stop
Fault		Cause: Emergency stop.

Soultion:

1. When the multi-function input terminals MI1 to MI8 are set to emergency stop and the AC motor drive stops output.
2. Press RESET after fault has been cleared.
bb
Base block
Fault		Cause: Base Block.

Soultion:

1. When the multi-function input terminals MI1 to MI8 are set to base block and the AC motor drive stops output.
2. Press RESET after fault has been cleared.
Pcod
Password
error
Fault		Cause: Password is locked- Entering the wrong password three consecutive times.
– Entering the wrong password three consecutive times.

Soultion:

1. Keypad will be locked. Turn the power ON after power OFF to re-enter the correct password. See Pr.00-07 and 00-08.

Check this also:

Incorrect password input through Pr.00-07
1. Input the correct password after rebooting the motor drive.
2. If you forget the password, do the following steps:
Step 1: Input 9999 and press ENTER.
Step 2: Repeat step 1. Input 9999 and press ENTER.
(You need to finish step 1 and step 2 within 10 seconds. If you don’t finish the two steps in 10 seconds, try again.)
3. The parameter settings return to the default when the “Input 9999” process is finished.
ccod
SW Code
Error
Fault		Cause: SW code error.

Soultion: There is an hardware or software issue in drive. Need to repair or replace drive.
CE1
PC error
command
Fault		Cause: Illegal function code

Soultion:

1. Check if the function code is correct (function code must be 03, 06, 10, 63)
CE2
PC err
address
Fault 		Cause: Illegal data length

Soultion:

1. Check if the communication data length is correct.
CE3
PC error
data
Fault 		Cause: Illegal data value

Soultion:

1. Check if the data value exceeds max./min. value.
CE4
PC slave
fault		Cause: Fault illegal communication address

Soultion:

1. Check if the communication address is correct.
CE10
PC time
out Fault		Cause: Communication time-out

Soultion:

1. Check if the wiring for the communication is correct.
CP10
Keypad
timeout
Fault		Cause: Keypad communication error (time out)
ydc
Y-delta
connect
Fault		Cause: Y-connection/∆-connection switch error

Soultion:

1. Check the wiring of the Y-connection/∆-connection
2. Check the parameters settings
dEb
Dec. Energy
back
Fault		Cause: When Pr.07-13 is not set to 0 and momentary power off or power cut, it will display dEb during accel./decel. stop.

Soultion:

1. Set Pr.07-13 to 0
2. Check if input power is stable
oSL
Over slip
error
Fault		Cause: It will be displayed when slip exceeds Pr.07-29 setting and time exceeds Pr.07-30 setting.

Soultion:

1. Check if motor parameter is correct (please decrease the load if overload
2. Check the settings of Pr.07-29 and Pr.07-30
ovU
Unknow
OverAmp
Fault		Unknow Over Amp
ovU
Unknow Over
Vol
Fault		Unknow Over Vol
SdRv
SpdFbk
Dir Rev
Fault 		Estimated speed is not in the same direction with speed command
SdOr
SpdFbk
over SPD
Fault		Estimated speed is greater than speed command
SdDe
SpdFbk
device
Fault		Estimated speed has great speed deviation
S1
S1-emergy
stop
Fault		Safety protection error
Uoc
U phase
oc Fault		Cause: U phase short circuit- U-phase short circuit detected when the output wiring detection is performed before the drive runs.

Soultion:

1. Incorrect wiring for the motor
– Check if the motor’s internal wiring and the UVW wiring of the drive output terminal are correct.

2. Short-circuit at motor output due to poor insulation wiring
– Check the motor cable and remove causes of the short circuits, or replace the cable before turning on the power.

3. Check for possible burnout or aging insulation of the motor
– Check the motor insulation value with megger. Replace the motor if the insulation is poor.

4. Malfunction caused by interference
– Verify the wiring of the control circuit and the wiring/grounding of the main circuit to prevent interference.

5. The length of motor cable is too long
– Increase the AC motor drive’s capacity.
– Install AC reactor(s) on the output side (U/V/W).

6. Hardware failure
– The Aoc occurs due to the short circuit or ground fault at the output side of the drive. Check for possible short circuits between terminals with the electric meter: B1 corresponds to U, V and W; DC- corresponds to U, V and W; corresponds to U, V and W.
Voc
V phase
oc Fault		Cause: V phase short circuit: V-phase short circuit detected when the output wiring detection is performed before the drive runs.

Soultion:

1. Incorrect wiring for the motor
– Check if the motor’s internal wiring and the UVW wiring of the drive output terminal are correct.

2. Short-circuit at motor output due to poor insulation wiring
– Check the motor cable and remove causes of the short circuits, or replace the cable before turning on the power.

3. Check for possible burnout or aging insulation of the motor
– Check the motor insulation value with megger. Replace the motor if the insulation is poor.

4. Malfunction caused by interference
– Verify the wiring of the control circuit and the wiring/grounding of the main circuit to prevent interference.

5. The length of motor cable is too long
– Increase the AC motor drive’s capacity.
– Install AC reactor(s) on the output side (U/V/W).

6. Hardware failure
– The Aoc occurs due to the short circuit or ground fault at the output side of the drive. Check for possible short circuits between terminals with the electric meter: B1 corresponds to U, V and W; DC- corresponds to U, V and W; corresponds to U, V and W.
Woc
W phase
oc Fault		Cause: W phase short circuit: W-phase short circuit detected when the output wiring detection is performed before the drive runs.

Soultion:

1. Incorrect wiring for the motor
– Check if the motor’s internal wiring and the UVW wiring of the drive output terminal are correct.

2. Short-circuit at motor output due to poor insulation wiring
– Check the motor cable and remove causes of the short circuits, or replace the cable before turning on the power.

3. Check for possible burnout or aging insulation of the motor
– Check the motor insulation value with megger. Replace the motor if the insulation is poor.

4. Malfunction caused by interference
– Verify the wiring of the control circuit and the wiring/grounding of the main circuit to prevent interference.

5. The length of motor cable is too long
– Increase the AC motor drive’s capacity.
– Install AC reactor(s) on the output side (U/V/W).

6. Hardware failure
– The Aoc occurs due to the short circuit or ground fault at the output side of the drive. Check for possible short circuits between terminals with the electric meter: B1 corresponds to U, V and W; DC- corresponds to U, V and W; corresponds to U, V and W.
OPHL
U phase
lacked
Fault		Meaning: Output phase loss (Phase U).
OPHL
V phase
lacked
Fault		Meaning: Output phase loss (Phase V).

OPHL
W phase
lacked
Fault		Meaning: Output phase loss (Phase W).

CGdE
Guarding
T-out
Fault		Meaning: CANopen guarding fail.
– When CANopen Node Guarding detects that one of the slaves does not respond, the CgdE fault occurs.
– The upper unit sets the factor and time during configuration.

Cause & Solution:

1. The guarding time is too short, or less detection times
– Increase the guarding time (Index 100C) and detection times

2. Malfunction caused by interference
– 1. Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– 2. Make sure the communication circuit is wired in series.
– 3. Use CANopen cable or add terminating resistance.

3. Communication cable is broken or bad connected
– Check or replace the communication cable.
CHbE
Heartbeat
T-out
Fault		Meaning: CANopen heartbeat fail.
– When CANopen Heartbeat detects that one of the slaves does not respond, the ChbE fault occurs.
– The upper unit sets the confirming time of producer and consumer during configuration.

Cause & Solution:

1. The heartbeat time is too short Increase heartbeat time (Index 100C)

2. Malfunction caused by interference
– 1. Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– 2. Make sure the communication circuit is wired in series.
– 3. Use CANopen cable or add terminating resistance.

3. Communication cable is broken or bad connected
– Check or replace the communication cable.
CSYE
SYNC T-out
Fault		CANopen sync fail
CbFE
CAN/S Bus
Off Fault		Meaning: CANopen bus off fail.

1. Hardware
– When CANopen card is not installed, the CbFE fault occurs.

2. Software
– When the master receives wrong communication package, the CbFE fault occurs.
– Too much interference on BUS
– The master receives wrong package when the CAN_H and CAN_L communication cables are short, CbFE fault occurs.

Cause & Solution:

1. Check if the CANopen card is installed
– Make sure the CANopen card is installed.

2. Check if the CANopen speed is correct
– Reset CANopen speed (Pr.09-37)

3. Malfunction caused by interference
– 1. Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.
– 2. Make sure the communication circuit is wired in series.
– 3. Use CANopen cable or add terminating resistance.

4. Communication cable is broken or bad connected
– Check or replace the communication cable.
CIdE
CAN/S Idx
exceed
Fault		Meaning: CANopen index error.

Cause & Solution:

1. Incorrect setting of CANopen index
– Reset CANopen Index (Pr.00-02=7)

2. Reset condition: The upper unit sends a reset package to clear this fault.
CAdE
CAN/S Addres
set Fault		Meaning: CANopen station address fail (only supports 1–127).

Cause & Solution:

Incorrect setting of CANopen station address
1. Disable CANopen (Pr.09-36=0)
2. Reset CANopen (Pr.00-02=7)
3. Reset CANopen station address (Pr.09-36)
CFrE
CAN/S FRAM
fail Fault		Meaning: CANopen memory fail- When you update the firmware version of the control board, the FRAM internal data does not change, then CFrE fault occurs.

Cause & Solution:

CANopen internal memory error
1. Disable CANopen (Pr.09-36=0)
2. Reset CANopen (Pr.00-02=7)
3. Reset CANopen station address (Pr.09-36)
ictE
Inner Com
Time Out
Fault		Meaning: Internal communication overtime fail.

Cause & Solution:

1. Malfunction caused by interference
– Verify the wiring and grounding of the communication circuit. It is recommended to separate the communication circuit from the main circuit, or wire in 90 degree for effective anti-interference performance.

2. Different communication setting from the upper unit
– Check if the setting for Pr.09-02 is the same as the setting for the upper unit.

3. Disconnection or bad connection of the cable
– Check the cable and replace it if necessary.