Rockwell Automation GV3000/SE 230VAC 1-20 HP GP & Vector Drive Ver. 6.04 Software Start-Up and Ref. - Manual (Page 182)

5-4 GV3000/SE 230 VAC Drive, Software Reference Version 6.04
Table 5.2 – List of Fault Codes (Continued)
Fault
Description
Low DC bus voltage
Network comm loss
Identification
Request not yet
performed (V/Hz
only)
Overcurrent (steady
state).
Trips at 137% load
(based on inverter
type current) check
Power Module rating.
Drive
overtemperature.
Overcurrent (at
acceleration)
Overcurrent (at
DC Braking)
Overcurrent (at
deceleration)
Code
LU
nCL
nId
OC
OCA
OCb
OCd
Fault Cause
DC bus voltage too low. Line dip too
long (P.042).
Input rectifier diodes defective.
Communications with the AutoMax
network have been lost.
Drive started but Identification
Result = Zero.
Output phase-to-phase short.
Bus voltage line-to-line.
Ground fault.
Momentary overload.
Bad motor.
Torque boost/ V/Hz too high (V/Hz).
Motor unknown to regulator (V/Hz).
Parameter settings (Vector).
Encoder wired incorrectly, wrong PPR.
Cooling fan failure.
Acceleration time too short.
DC voltage too high.
Deceleration time too short.
Corrective Action
Check input voltage, line fuses. If
necessary, add transformer. Check value
of Ride-Through Time (P.042), Line
Voltage (H.021, U.018).
Check DC Bus voltage. If incorrect,
replace diode set.
Check network cabling from network
master to network option board. Check
that network master is operating
properly.
Reset fault. Perform Identification
Request. Restart drive.
Check isolation between each output line.
Check transistor modules for correct
output. If incorrect, possible board
defect; replace. Possible Hall effect
current sensor defective; replace.
Check isolation between ground and
output terminals. Possible leakage
current sensor defect; replace sensor.
Check for motor overload; reduce load on
motor.
Check motor for correct operation.
Check parameters H.001, H.002, and/or
H.003. Enable Identification Request
(H.020)
Check that regulator was updated with
actual motor characteristics via
Identification Request (H.020).
Check Encoder PPR (U.001), Motor
Poles (U.002), Base Frequency (U.003),
Motor Nameplate Amps (U.004),
Magnetizing Current (U.006), Speed
Regulator Prop. Gain (U.012).
Check encoder wiring. Perform vector
self-tuning.
Check ambient temperature, cooling fan,
minimum clearances around drive.
Increase acceleration time (P.001, P.017,
P.021).
Check parameters H.006, H.007.
Increase deceleration time (P.002, P.018,
P.022).