Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 187)

Publication 1398-5.2 – PDF 1997
Maintenance and Troubleshooting 11-5
Bus Undervoltage 09 Low AC line/AC power input
(100 V AC minimum for safe
drive operation) Verify voltage level of the
incoming VAC power.
Check AC power source for
glitches or line drop (below 90
VAC).
Install an uninterruptible power
supply (UPS) on your VAC
input.
Bus Overvoltage 10 Excessive regeneration of
power
When the drive is driven by
an external mechanical
power source, it may regen-
erate too much peak energy
through the drive’s power
supply. The system faults to
save itself from an overload. Change the deceleration or
motion profile and/or reduce
the reflected inertia of your
mechanical system.
Use a larger system (motor
and drive).
Excessive AC input voltage Verify input is below 264 VAC.
Output short circuit Check for shorts.
Motor cabling wires shorted
together Check for shorts.
Internal motor winding short
circuit Check for shorts.
Illegal Hall State 11 Incorrect phasing
Bad connections
Check the Hall phasing.
Verify the Hall wiring.
RESERVED 12
RESERVED 13
RESERVED 14
RESERVED 15
RESERVED 16
Excessive Average Cur-
rent 17 Excessive time at peak cur-
rent Reduce acceleration rates
Reduce duty cycle (ON/OFF)
of commanded motion.
Increase time permitted for
motion.
Mechanical jam or excessive
frictional load.
User larger drive and motor.
Software parameter set too
low Increase Average Current
parameter to a less restrictive
setting.
Insufficient bus voltage Correct the under voltage con-
dition or intermittent AC power
or install a larger size trans-
former.
Motor Phasing is incorrect Check motor phasing.
Table 11.1: Troubleshooting Guide (continued)
Problem or Symptom Error
Code Possible Cause(s) Action/Solution