Delta VP3000 Series - Page 504

Chapter 8 Troubleshooting｜VP3000
495
ID No.
Fault Name
Descriptions
4
Ground fault
(GFF)
When the AC motor drive detects that (one of) the output terminal(s) is
grounded and the grounding current is higher than Pr. H2-00 setting value, GFF
occurs.
NOTE: the short circuit protection is provided for AC motor drive protection, not
to protect the user.
Action and Reset
Action Condition
Pr. H2-00 (Default = 60%)
Action Time
No
Fault Treatment Parameter
No
Reset Method
Manual reset
Reset Condition
Reset in 5 sec. 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 carrier
frequency.
Take remedies to reduce stray capacitance.
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 degrees
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.