Inovance CS710 Drive Fault Codes List

A comprehensive guide to Inovance CS710 crane drive fault codes. Troubleshoot brake logic errors, master-slave sync issues, and hoist faults using InoDriveShop.

Inovance CS710 Fault Codes Reference Table

Below is the complete list of fault codes, brake logic errors, and troubleshooting actions associated with the CS710 crane series.

Inovance CS710 Drive Fault Codes List

Inovance CS710 Drive Fault Codes List

Fault Code and Meaning Cause and Remedy
Er102

Overcurrent during acceleration		 Cause:
  • 1. The output circuit is grounded or short circuited.
  • 2. The control mode is vector control but motor auto-tuning is not performed.
  • 3. The acceleration time is too short.
  • 4. Customized torque boost or V/F curve is not appropriate.
  • 5. The voltage is too low.
  • 6. A start command is sent to the rotating motor.
  • 7. A load is added during acceleration.
  • 8. The power rating of the drive is too low.

Remedy:
  • 1. Eliminate faults of peripheral devices.
  • 2. Perform motor auto-tuning.
  • 3. Increase the acceleration time.
  • 4. Adjust the customized torque boost or V/F curve.
  • 5. Adjust the voltage to the normal range.
  • 6. Select rotational speed tracking restart or start the motor after it stops.
  • 7. Remove the added load.
  • 8. Select a drive model of higher power rating.
Er103

Overvoltage during deceleration		 Cause:
  • 1. The output circuit is grounded or short circuited.
  • 2. The control mode is vector control but motor auto-tuning is not performed.
  • 3. The deceleration time is too short.
  • 4. The voltage is too low.
  • 5. A load is added during deceleration.
  • 6. No braking unit and braking resistor are installed.

Remedy:
  • 1. Eliminate faults of peripheral devices.
  • 2. Perform motor auto-tuning.
  • 3. Increase the deceleration time.
  • 4. Adjust the voltage to the normal range.
  • 5. Remove the added load.
  • 6. Install the braking unit and braking resistor.
Er104

Overvoltage at constant speed		 Cause:
  • 1. The output circuit is grounded or short circuited.
  • 2. The control mode is vector control but motor auto-tuning is not performed.
  • 3. The voltage is too low.
  • 4. A load is added when the motor is running.
  • 5. The power rating of the drive is too low.

Remedy:
  • 1. Eliminate faults of peripheral devices.
  • 2. Perform motor auto-tuning.
  • 3. Adjust the voltage to the normal range.
  • 4. Remove the added load.
  • 5. Select a drive model of higher power rating.
Er105

Overcurrent during acceleration		 Cause:
  • 1. The input voltage is too high.
  • 2. An external force drives the motor during acceleration.
  • 3. The acceleration time is too short.
  • 4. No braking unit and braking resistor are installed.

Remedy:
  • 1. Adjust the voltage to the normal range.
  • 2. Cancel the external force or install a braking resistor.
  • 3. Increase the acceleration time.
  • 4. Install the braking unit and braking resistor.
Er106

Overvoltage during deceleration		 Cause:
  • 1. The input voltage is too high.
  • 2. An external force drives the motor during deceleration.
  • 3. The deceleration time is too short.
  • 4. No braking unit and braking resistor are installed.

Remedy:
  • 1. Adjust the voltage to the normal range.
  • 2. Cancel the external force or install a braking resistor.
  • 3. Increase the deceleration time.
  • 4. Install the braking unit and braking resistor.
Er107

Overvoltage at constant speed		 Cause:
  • 1. The input voltage is too high.
  • 2. An external force drives the motor during acceleration.

Remedy:
  • 1. Adjust the voltage to the normal range.
  • 2. Cancel the external force or install a braking resistor.
Er108

Control power fault		 Cause:
  • The input voltage is out of the specified range.

Remedy:
  • Adjust the input voltage to the specified range.
Er109

Undervoltage fault		 Cause:
  • 1. Instantaneous power failure occurs.
  • 2. The input voltage is out of the allowable range.
  • 3. The bus voltage is abnormal.
  • 4. The rectifier bridge and pre-charge resistor are faulty.
  • 5. The drive board is faulty.
  • 6. The control board is faulty.

Remedy:
  • 1. Reset the drive.
  • 2. Adjust the voltage to the normal range.
  • 3-6. Contact the agent or Inovance.
Er110

Drive overload		 Cause:
  • 1. The load is too heavy or rotors of the motor are blocked.
  • 2. The power rating of the drive is too low.

Remedy:
  • 1. Reduce the load and check the motor and mechanical conditions.
  • 2. Select a drive model of higher power rating.
Er111

Motor overload		 Cause:
  • 1. The motor protection parameter bE.01 is not set properly.
  • 2. The load is too heavy or rotors of the motor are blocked.
  • 3. The power rating of the drive is too low.

Remedy:
  • 1. Set the bE.01 properly.
  • 2. Reduce the load and check the motor and mechanical conditions.
  • 3. Select a drive model of higher power rating.
Er112

Input phase loss		 Cause:
  • 1. The three-phase power input is abnormal.
  • 2. The drive board, lightning protection board, control board, or rectifier bridge is abnormal.

Remedy:
  • 1. Check and eliminate wiring problems.
  • 2. Contact the agent or Inovance.
Er114

IGBT overheat		 Cause:
  • 1. The ambient temperature is too high.
  • 2. The cooling air channel is blocked.
  • 3. The fan is damaged.
  • 4. The thermistor of the module is damaged.
  • 5. The IGBT module is faulty.

Remedy:
  • 1. Lower the ambient temperature.
  • 2. Clean the cooling air channel.
  • 3. Replace the fan.
  • 4. Replace the thermistor.
  • 5. Replace the IGBT module.
Er115

Built-in braking unit overloaded		 Cause:
  • 1. The resistance of the braking resistor is too small.
  • 2. The braking resistor is short circuited.
  • 3. The built-in braking unit is damaged.
  • 4. The power of the load is too high.

Remedy:
  • 1. Use a braking resistor of larger resistance.
  • 2. Check the cable connection between the drive and braking resistor.
  • 3. Contact the agent or Inovance.
Er117

Contactor fault		 Cause:
  • 1. The drive board or power supply is faulty.
  • 2. The contactor is faulty.

Remedy:
  • 1. Replace the drive board or power supply board.
  • 2. Replace the contactor.
Er118

Current detection fault		 Cause:
  • 1. The hall is faulty.
  • 2. The drive board is faulty.

Remedy:
  • 1. Replace the hall.
  • 2. Replace the drive board.
Er119

Motor auto-tuning fault		 Cause:
  • 1. The motor parameter settings are inconsistent with those on the motor nameplate.
  • 2. Motor auto-tuning times out.

Remedy:
  • 1. Set the motor parameters according to values on the motor nameplate.
  • 2. Check the cable connections between the drive and the motor.
Er120

Encoder fault		 Cause:
  • 1. The encoder type does not match the drive.
  • 2. The encoder is connected incorrectly.
  • 3. The encoder is damaged.
  • 4. The PG card is faulty.

Remedy:
  • 1. Set the encoder type correctly.
  • 2. Eliminate wiring problems.
  • 3. Replace the encoder.
  • 4. Replace the PG card.
Er123

Short circuit to ground		 Cause:
  • 1. The motor is short circuited to the ground.

Remedy:
  • 1. Replace the cable or motor.
Er125
Output phase loss		 Cause:
1. The cables connecting the drive and the motor are abnormal.
2. The three-phase outputs of the drive are unbalanced when the motor is running.
3. The drive board is faulty.
4. The IGBT module is faulty.

Remedy:
  • 1. Eliminate faults of peripheral devices.
  • 2. Check whether the motor three-phase winding is normal. If not, rectify the fault.
  • 3. Contact the agent or Inovance.
  • 4. Contact the agent or Inovance.
Er137
Abnormal frequency direction		 Cause:
The direction of the frequency reference is reverse to the direction of the motor feedback frequency.

Remedy:
  • 1. Check that motor parameters are set correctly.
  • 2. Check whether the load is heavy. If so, reduce the load.
  • 3. Modify setting of bC.02.
Er138
Abnormal frequency following		 Cause:
There is large deviation between the frequency reference and the motor feedback frequency.

Remedy:
  • 1. Check that motor parameters are set correctly.
  • 2. Check whether the load is heavy. If so, reduce the load.
  • 3. Modify settings of bC.03 and bC.04.
Er140
Pulse-by-pulse current limiting fault		 Cause:
1. The load is too heavy or rotors of the motor are blocked.
2. The power rating of the drive is too low.

Remedy:
  • 1. Reduce the load and check the motor and mechanical conditions.
  • 2. Select a drive model of higher power rating.
Er*41
Brake release fault		 Cause:
The input brake release feedback signal is incorrect. For details, see description of b6.08.

Remedy:
  • 1. Check the brake circuit.
  • 2. Check the brake release feedback input option (input function 11) of the control board.
Er*42
Brake applying fault		 Cause:
The input brake applying feedback signal is incorrect. For details, see description of b6.08.

Remedy:
  • 1. Check the brake circuit.
  • 2. Check the brake applying feedback input option (input function 12) of the control board.
Er*43
Shaft-cooling motor low-speed running timeout		 Cause:
For details, see description of b0.00 and b0.01.

Remedy:
  • 1. Adjust settings of b0.00 and b0.01.
  • 2. Take protection measures to prevent the motor from overheating.
Er*44
Forward and reverse RUN commands valid simultaneously		 Cause:
The drive detects forward and reverse RUN commands simultaneously.

Remedy:
  • 1. Check peripheral circuits of the forward and reverse RUN command input channels.
  • 2. Increase the DI filter time properly.
Er*45
Joystick not reset		 Cause:
The drive detects the RUN command or input frequency reference signal at power-on.

Remedy:
  • 1. Ensure that all NO inputs are disabled during power-on.
  • 2. Enter the RUN command after system initialization is completed.
Er*46
Process card communication fault		 Cause:
Communication between the drive and process card (CS70CF*) is abnormal.

Remedy:
  • 1. Check that bF.18 is set correctly.
  • 2. Contact the agent or Inovance.
Er*47
CANlink communication fault		 Cause:
1. The CANlink extension card does not work normally.
2. The communication cable does not work normally.

Remedy:
  • 1. Check that communication cables between extension cards are securely connected.
  • 2. Check that the extension card interfaces are securely connected.
  • 3. Shorten the distances between communication nodes.
Er*48
Communication error		 Cause:
1. The computer does not work normally.
2. The communication cable does not work normally.
3. Communication parameters in group bd are not set properly.

Remedy:
  • 1. Check the cable connected to the computer.
  • 2. Check the communication cable connection.
  • 3. Set the extension card correctly.
  • 4. Set communication parameters correctly.
Er*49
Parameter read-write error		 Cause:
The EEPROM chip is damaged.

Remedy:
  • Replace the control board.
Er*50
External input fault		 Cause:
DI function 6 is valid.

Remedy:
  • Reset the drive.
Er*51
Function code error		 Cause:
1. A function parameter is not set properly.
2. The EEPROM storage chip is faulty.

Remedy:
  • 1. Use the parameter self-check function to find the abnormal function parameter and modify it.
  • 2. Replace the control board.
 

How to Read CS710 Faults via InoDriveShop

Troubleshooting crane drives requires precision, especially regarding brake timing and torque handling. In 2026, using the InoDriveShop PC software is the safest way to diagnose the CS710.

  • Brake Logic Analysis: The most common issues with crane drives relate to brake opening/closing timing (Err40/Err41). InoDriveShop allows you to trace the “Brake Release” signal against the “Output Current” and “Motor Speed.” This visual confirmation helps you adjust the brake release frequency to prevent load slip (rollback).
  • Torque Verification: For lifting applications, the drive must hold the load at zero speed before the brake releases. The software’s oscilloscope function lets you verify if the drive is generating sufficient holding torque before releasing the mechanical brake, preventing dangerous load drops.
  • Safety I/O Status: Cranes rely heavily on limit switches and anti-collision sensors. Through the software or the U0 parameter group, you can check the status of Digital Inputs in real-time to see if a loose wire on an “Emergency Limit” or “Slow Down” switch is causing the trip.

Frequently Asked Questions (FAQ)

Q: What is the difference between an Alarm and a Fault?

A: An Alarm (displayed as ‘A’ or ‘ALm’) warns of conditions like “Brake Wear” or “Inverter Overload Pre-warning,” usually allowing the operator to lower the load safely. A Fault (displayed as ‘Err’) immediately disables the output and engages the mechanical brake to secure the load.

Q: How do I reset an Inovance CS710 fault?

A: You can reset the drive using the following methods:

  1. Pressing the STOP/RESET button on the keypad (ensure the load is secured first).
  2. Triggering a remote Digital Input (DI) from the crane cabin or radio remote controller.
  3. Cycling the main power supply (required for critical hardware or safety circuit faults).

Q: Where is the fault history stored?

A: The CS710 stores the last 3 fault codes in parameters U0-00 (latest), U0-01, and U0-02. Crucially, it records the “Output Current” and “Bus Voltage” at the moment of the fault in parameters U0-03 through U0-17, which is vital for diagnosing heavy lifting overloads.

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