Allen-Bradley 1336 IMPACT - Page 46

2–11Troubleshooting and Error Codes
Publication 1336 IMPACT-6.2 – March 1998
Fault Code and
Text
Suggested ActionDescription
Fault
Type
LED Information
06079
SP Error
VP, Flashing green Warning
SCANport communications have been
interrupted.
If the adapter was not intentionally
disconnected:
• Check the amount of noise on the system.
• Check the wiring to the SCANport adapters.
• Replace wiring, SCANport expander,
SCANport adapters, and main control board.
• Replace drive, if required.
If you do not want this condition to be
reported as a warning, change bit 15 in
Warning Select 1 (parameter 21) to 0.
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.
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.
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.
12033
Prechrg Time
CP, Flashing red Soft
The precharge function could not complete
within 30 seconds.
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 1 in Fault
Select 1 (parameter 20) to 0.