Fault Code E67 (Err67): AFE Rectifier/Regenerative Unit Functional Fault
In simple terms, this fault is related to the inverter base and is relatively uncommon. It typically appears during the installation or commissioning phase. If the elevator has been running normally for some time and then this fault occurs, it is most likely due to a malfunction in the inverter itself or an issue with the client’s power supply system.
| Err 67 | EFE Fault | Sub-code 01: Overcurrent Fault | Check for grounding or short circuit in the AFE or inverter. Check whether controller parameters are set correctly. Check for abnormalities in the power grid or oscillation in output. Check for internal machine faults. Contact the manufacturer. |
| Sub-code 02: AFE Overtemperature Sub-code 04: DC Bus Undervoltage | Check if the ambient temperature is too high. Check if the fan is faulty or the air duct is blocked. Check if any power modules are damaged. Check for circuit faults and contact the manufacturer. Check for overload and reduce the load if necessary. Check if the DC bus voltage detection is abnormal, and contact the manufacturer. | ||
| Sub-code 06: DC Bus Overvoltage | Install a braking resistor to the inverter. Check if the power supply voltage and wiring are normal. Verify if the model and working condition match the setup. Contact the manufacturer to check the circuit and voltage loop settings. | ||
| Sub-code 07: AFE Overload | Check if the machine power rating matches appropriately. | ||
| Sub-codes 08–11: 08: Power Grid Overvoltage 09: Power Grid Undervoltage 10: Power Grid Overfrequency 11: Power Grid Underfrequency | Check whether the power supply voltage is within the normal range. Contact the manufacturer to inspect the circuitry. | ||
| Sub-codes 12–13: 12: Power Grid Voltage Asymmetry 13: Power Grid Phase Lock Fault | Check if all three phases of the power supply are normal. Check if the input wiring is correct. Contact the manufacturer to inspect the circuitry. | ||
| Sub-codes 14–17: 14: AFE Current Asymmetry 15: Wave-by-Wave Current Limiting Fault 16: Zero-Sequence Current Fault 17: Current Zero Drift Fault | Check if the three-phase input is normal. Check for excessive load. Check for ground short circuits in the system. Contact the manufacturer to inspect the circuitry. | ||
| Sub-codes 19, 21, 201, 202: Communication Faults 19: CAN Communication Abnormal 21: Parallel 485 Communication Fault 201/202: CAN Communication Abnormal | Check if the main control board software supports AFE. Verify if the parameter F6-52 bit2 on the main control board is set correctly. | ||
| Sub-code 23: DC Bus Reversed Connection Fault | Check whether communication cables are disconnected or have poor contact. Check the DC bus wiring and reverse the polarity if necessary. |
