Chapter 6: Maintenance and Troubleshooting
6–4
DURAPULSE AC Drive User Manual
1st Ed. Rev. D 05/2013
Fault Messages
Fault Name/Description Corrective Actions
Parameter settings (P 6.07 to P 6.09)
An external condition has occurred to
cause an internal electronic or motor
thermal overload fault
If P 6.07 is set to ‘1’ to enable during steady state:
1. Check for possible motor overload.
2. Check electronic thermal overload relay setting (P 6.00)..
3. Increase motor capacity.
4. Reduce the current level so that the AC drive output current does
not exceed the value set by the Motor Rated Current P 0.01.
Parameter settings (P 6.07 to P 6.09)
An external condition has occurred to
cause an over-torque fault.
If P 6.07 is set to ‘2’ to enable detection during accel/decel:
1. Reduce the motor overload.
2. Adjust the over-torque detection setting to an appropriate level.
Over-current during acceleration:
1. Short-circuit at motor output.
2. Torque boost too high.
3. Acceleration time too short.
4. AC drive output capacity is too small.
1. Check for possible poor insulation at the output line.
2. Decrease the torque boost setting in P 2.02.
3. Increase the acceleration time P 1.01 and P 1.05.
4. Replace the AC drive with one that has a higher output capacity.
Over-current during deceleration:
1. Short-circuit at motor output.
2. Deceleration time too short.
3. AC drive output capacity is too small.
1. Check for possible poor insulation at the output line.
2. Increase the deceleration time P 1.02 and P 1.06.
3. Replace the AC drive with one that has a higher output capacity.
Over-current during steady state operation
1. Short-circuit at motor output.
2. Sudden increase in motor loading.
3. AC drive output capacity is too small.
1. Check for possible poor insulation at the output line.
2. Check for possible motor stall.
3. Replace the AC drive with one that has a higher output capacity.
Internal memory IC cannot be programmed
1. Switch off power supply.
2. Check whether the input voltage falls within the AC drive's rated
input voltage.
3. Switch the AC drive back on. If fault does not clear, contact ADC
Support for assistance.
Internal memory IC cannot be read.
1. Reset drive to factory defaults P 9.08 to 99.
2. Switch off power supply
3. Switch the AC drive back on. If fault does not clear, contact ADC
Support for assistance.
Internal memory IC failed to receive outputstatus
1. Check all connections at L1, L2 and L3.
2. Verify correct voltage at L1, L2,L3.
3. Contact ADC Support for assistance.
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