Other Fault Diagnosis and Solutions

Code No.:  E056

Slave Unit Error (Non-Resettable)
- Confirm whether the slave unit is functioning properly and meets the operational requirements.
- Verify the status of the inter-unit fiber-optic cable and ensure that the communication of slave unit 1 is normal; use the method of powering on individual units for troubleshooting before combining them into parallel operation; check for any obvious breaks in the connecting ribbon cable between the mainboard and the fiber-optic board of the slave unit; power off and then repower the slave unit.

Code No.:  E100

Overvoltage Error
- Power off and confirm the resistance value of the braking resistor.
- Verify that the wiring of the VFD, the terminals of the braking unit, external cables, and the braking resistor are free from short circuits to ground.
- Check for the presence of surge voltages in the input power supply and whether the supply voltage is excessively high.
- Ensure that the encoder is securely fastened and its wiring is normal, and observe the operational performance with open-loop operation under no-load or light-load conditions and rule out issues such as encoder malfunction, line interference or PG card problems. 
- Check for motor lifetime and insulation; confirm whether the motor has a short circuit to ground; measure the motor insulation resistance; verify that the motor current values are normal.
- Inspect the insulation to ground of the power cables and terminals, and confirm that the motor and its wiring are normal.
- Power on the VFD, confirm and adjust parameter P8.35 (deceleration time 1); verify the appropriateness of parameter P7.12 (bus overvoltage).
- Check if the moment of inertia self-tuning is functioning properly.
- For systems without a braking unit, ensure that the stopping method is set to free coasting stop (P8.3).
- When two or more VFD are operating in master-slave parallel mode, poor synchronization between the master and slave units may occasionally trigger an overvoltage fault.
- Consider adjusting the slip and overvoltage suppression settings simultaneously; if overvoltage persists, consider adding a braking unit and braking resistor (e.g., for fans or conveyor belts, etc.). 
- Enable the common DC lifting function by setting P2.11.

Code No.:  E105

Undervoltage Error
- The bus voltage drops to its limit value due to a decrease in the input voltage or a phase loss in the input voltage. 
- Verify the input voltage and check that the power supply conditions on the input side of the VFD are normal (e.g. contactors, leakage protectors and circuit breakers). 
- Confirm parameter P7.13 (bus undervoltage). 
- Check the status of the internal starting resistors and the engagement of the bypass contactors in the VFD.

Code No.:  E106 & E107

Brake Feedback Abnormality 1 & 2
- Verify the wiring of DI terminals.
- Confirm whether the motor brake control is functioning properly.

Code No.:  E108

DC Contactor Error
- Cut off the power supply and inspect the connecting wires of the DC contactor.
- Verify whether the coil and contacts of the DC contactor are functioning normally.

Code No.:  E160 

Slave Unit Error
- Verify that the slave unit is functioning properly and meets the operational requirements. 
- Check the parallel-connection optical fibre cable to ensure normal communication with Slave Unit 1. 
- Employ the method of powering up the individual unit for troubleshooting before establishing a parallel connection. 
- Inspect the connecting ribbon cable between the control board and the optical fibre board of the slave unit for any obvious breaks. 
- Power off the slave unit and then power it on again.

Code No.:  E161

Slave Unit Not Ready
- Verify that the slave unit is functioning properly and meets the operational requirements. 
- Check the parallel-connection optical fibre cable to ensure normal communication with Slave Unit 1. 
- Employ the method of powering up the individual unit for troubleshooting before establishing a parallel connection. 
- Inspect the connecting ribbon cable between the control board and the optical fibre board of the slave unit for any obvious breaks. 
- Power off the slave unit and then power it on again.

Code No.:  E171

Anti-sway Equivalent Rope Length Error
- Check if the zero-point calibration is functioning correctly.
- Manually trigger the upper anti-sway limit switch.

Code No.:  E200

Local Terminal Error
- Verify the digital input parameters in parameter group P3, as well as the associated external relays and wiring.

Code No.:  E201

Remote Terminal Error 
- Verify the digital input parameters in parameter group P3, as well as the associated external relays and wiring.

Code No.:  E204

DI Function Setting  Error 
- Verify whether there is any duplication in the DI (Digital Input) terminal configuration functions within Parameter Group 3.

Code No.:  E210

Operation Panel Error  
- Verify whether the operation panel and its connections are functioning properly.

Code No.:  E220

CRC Verify Error  
- Power cycle the device.
- Reconfigure the parameters.
- Replace the control board.

Code No.:  E221

Parameter Error 
- Verify whether the parameter settings meet the requirements.

Code No.:  E191

Smooth Lifiting Conflict
- Prohibit smooth lifting operation for parameter P12.38