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Revision August 2008, 03VE, SW V2.04 6-1
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 Fault Descriptions Corrective Actions
Over-current during
acceleration
(Output current
exceeds triple rated
current during
acceleration.)
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.
Over-current during
deceleration
(Output current
exceeds triple rated
current during
deceleration.)
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.
Over-current during
steady state
operation
(Output current
exceeds triple rated
current during
constant speed.)
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.
Hardware failure in
current detection
Return to the factory