Common Problems And Solutions; Chapter 6 Fault Code Information And Maintenance - Delta VFD-VE User Manual

Chapter 6 Fault Code Information and Maintenance

6.1 Fault Code Information
The AC motor drive has a comprehensive fault diagnostic system that includes several different
alarms and fault messages. Once a fault is detected, the corresponding protective functions will be
activated. The following faults are displayed as shown on the AC motor drive digital keypad display.
The six most recent faults can be read from the digital keypad or communication.
NOTE
Wait 5 seconds after a fault has been cleared before performing reset via keypad of input terminal.

6.1.1 Common Problems and Solutions

Fault Name
Revision Apr. 2016, 07VE, SW V2.05
Fault Descriptions
Over-current during
acceleration
(Output current
exceeds triple rated
current during
acceleration.)
Over-current during
deceleration
(Output current
exceeds triple rated
current during
deceleration.)
Over-current during
steady state
operation
(Output current
exceeds triple rated
current during
constant speed.)
Hardware failure in
current detection
Corrective Actions
1. Short-circuit at motor output: Check for
possible poor insulation at the output
lines.
2. Acceleration Time too short: Increase the
Acceleration Time.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
1. Short-circuit at motor output: Check for
possible poor insulation at the output line.
2. Deceleration Time too short: Increase the
Deceleration Time.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
1. Short-circuit at motor output: Check for
possible poor insulation at the output line.
2. Sudden increase in motor loading: Check
for possible motor stall.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Return to the factory
6-1