Delta VFD2A8MS21ANSAA User Manual

Chapter 14 Fault CodesMS300
552
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 Condition
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. It is recommended
to 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
Refer to the corrective actions for ocn.
Over-current during acceleration
Refer to the corrective actions for ocA.
Over-current during deceleration
Refer to the corrective actions for ocd.

Delta VFD2A8MS21ANSAA Specifications

General

Brand	Delta
Model	VFD2A8MS21ANSAA
Category	DC Drives
Language	English