2–12 Troubleshooting and Error Codes
Publication 1336 IMPACT-6.8 – November, 2002
Fault Code and
Text
Suggested ActionDescription
Fault
Type
LED Status
12016
Overvoltage
CP, Solid red Soft
The DC bus voltage has exceeded the
maximum value.
When this condition occurs, the drive
coasts to a stop regardless of the
selected stop type.
Monitor the AC line for high line voltage or
transient conditions.
Increase the deceleration time or install the
dynamic brake option because motor
regeneration can also cause bus overvoltages.
Refer to the user manual for a description of
Bus Options (parameter 13) for additional
information about bus overvoltages.
If you are using flux braking, refer to Chapter
9, Applications, in the user manual for
information about flux braking.
12017
Desaturation
CP, Solid red Soft
There was too much current in the
system.
When this condition occurs, the drive
coasts to a stop regardless of the
selected stop type.
Run the power structure diagnostics.
Check for a shorted motor or motor wiring.
Replace the drive.
12018
Ground Fault
CP, Solid red Soft
A current path to earth ground in excess
of drive rated current has been detected
at one or more of the drive output
terminals.
When this condition occurs, the drive
coasts to a stop regardless of the
selected stop type.
Run the power structure diagnostics.
Check the motor and external wiring to the
drive output terminals for a grounded
condition.
On the Precharge Board Mounting Frame,
check the power supply and relay R1.
Replace the drive.
12019
Overcurrent
CP, Solid red Soft
There was too much current in the
system.
When this condition occurs, the drive
coasts to a stop regardless of the
selected stop type.
Run the power structure diagnostics.
Check for shorted motor or motor wiring.
Replace drive.
12020 CP, Solid red Soft VP and CP have lost communication.
Cycle power to drive.
Reset defaults.
Replace Control Board.
12032
RidethruTime
CP, Flashing red Soft
There was a bus voltage drop of 150V
and power did not return within 2
seconds.
Check the incoming power and fuses.
Refer to the Understanding Precharge and
Ridethrough Faults section in the
troubleshooting chapter of the user manual for
more information.
If you do not want this condition to be reported
as a fault, change bit 0 in Fault Select 1
(parameter 20) to 0.
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