Operating Instructions

Fault Codes
Digital Keypad
306 | 443
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
4
Ground fault (GFF)
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.
Action and Reset
Action level
N/A
Action time
N/A
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
Reset in five seconds after the fault is cleared
Record
Yes
Cause
Corrective Actions
Motor burnout or aging insulation occurred
● Check the motor insulation value with megger.
● Replace the motor if the insulation is poor.
Short circuit due to broken cable
● Troubleshoot the short circuit.
● Replace the cable.
Larger stray capacitance of the cable and
terminal
● If the motor cable length exceeds 100 m, decrease the setting value for the carrier frequency.
● Take remedies to reduce stray capacitance.
Malfunction caused by interference
Verify the grounding and wiring of the communication circuit. Separate the communication circuit
from the main circuit, or wire in 90 degree for effective anti-interference performance.
Hardware failure
Cycle the power after checking the status of motor, cable and cable length. If GFF still exists,
return to the factory for repair.
Over-current at constant speed
See the corrective actions for ocn.
Over-current during acceleration
See the corrective actions for ocA.
Over-current during deceleration
See the corrective actions for ocd.
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
6
Over-current at stop (ocS)
Over-current or hardware failure in current detection at stop.
Cycle the power after ocS occurs. If the hardware failure occurs, the
display shows cd1, cd2 or cd3.
Action and Reset
Action level
300% of the rated current
Action time
Immediately act
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
Reset in five seconds after the fault is cleared