Rockwell Automation 1398-DDM-xxx USE MNL/ULTRA 200 DIG.SERVO.DR - Manual (Page 198)

Publication 1398-5.0 – October 1998
11-10 Maintenance and Troubleshooting
Auxiliary Encoder state error 21 Auxiliary encoder encoun-
tered an illegal transition Use shielded cables with
twisted pair wires.
Route the encoder cable
away from potential noise
sources.
Bad encoder - replace
encoder
Check the ground connec-
tions
Motor Thermal Protection
Fault 22 Internal filter protecting the
motor from overheating has
tripped. Reduce acceleration rates
Reduce duty cycle (ON/
OFF) of commanded
motion.
Increase time permitted for
motion.
User larger drive and motor.
IPM Thermal Protection
Fault 23 Internal filter protecting the
IPM at slow speed has
tripped. Reduce acceleration rates
Reduce duty cycle (ON/
OFF) of commanded
motion.
Increase time permitted for
motion.
User larger drive and motor.
Velocity Error 24 Velocity error exceeded the
specified limit and time
parameters. Increase time or size of
allowable error.
Commutation Angle Error 25 Encoder index location is
inconsistent. Replace encoder.
Check encoder and motor
power wiring.
RESERVED 26
Axis not Homed 27 An absolute indexing move
was attempted without first
homing the axis. Home the drive before
attempting an absolute
indexing profile.
No Motor Selected 28 No motor was selected
when the drive was enabled. Select a motor before
enabling the drive.
Motor Information Missing 29 Motor number is referencing
a motor that is not currently
in the drive. Select a motor that is in the
drive.
Update the motor tables in
the drive (contact the fac-
tory).
RESERVED 30-53 Call the factory.
Personality EEPROM Read
Error 54 Personality EEPROM is
incompatible with the drive
firmware Upgrade firmware.
Hardware is malfunctioning. Call the factory.
RESERVED 55-82 Call the factory.
Personality EEPROM
Incompatibility 83 Personality EEPROM can-
not be used with an indexing
drive. Use a non-indexing drive.
Table 11.1: Troubleshooting Guide (continued)
Problem or Symptom Error Code Possible Cause(s) Action/Solution