Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR - Manual (Page 196)

Publication 1398-5.0 – October 1998
11-8 Maintenance and Troubleshooting
Channel BM line 07 Bad connections Verify continuity of the
encoder cable and connec-
tors.
Verify continuity of the BM+
and BM- wiring signals.
Bad Encoder Replace the motor or the
encoder.
Channel AM line 08 Bad connections Verify continuity of the
encoder cable.
Verify continuity of the AM+
and AM- wiring signals.
Bad Encoder Replace the motor or the
encoder.
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 main VAC 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
Table 11.1: Troubleshooting Guide (continued)
Problem or Symptom Error Code Possible Cause(s) Action/Solution