Publication 2098-IN003E-EN-P — April 2004
Troubleshooting Status Indicators
4-7
E28
Motor Parameter Error
Parameter loaded from smart encoder or
received from SERCOS controller is
incompatible with the drive.
•
Select a different motor through the
SERCOS controller.
•
Select a different motor.
E29
Encoder Output Frequency Exceeded
Encoder output frequency exceeds the
maximum user specified value. This only
applies when the encoder output is
synthesized by the drive.
•
Increase the encoder output maximum
frequency parameter.
•
Decrease the encoder interpolation
parameter.
•
Increase the encoder output divider
parameter.
E30
Encoder Communication Fault
Communication was not established with
an intelligent encoder.
•
Verify motor selection.
•
Verify the motor supports automatic
identification.
•
Verify motor encoder wiring.
E31
Encoder Data
Encoder data is corrupted.
Replace the motor/encoder.
E32
Sine/Cosine Encoder Frequency Limit
Exceeded
Maximum frequency of the sine/cosine
circuitry has been exceeded.
•
Decrease velocity.
•
Use encoder with lower resolution
(before interpolation).
E33
Absolute Position Exceeds Position
Rollover
Motion is commanded to a position outside
the position rollover range.
•
An absolute index is initiated that
specifies a position outside the position
rollover range.
•
A homing cycle is initiated with the
home position outside the position
rollover range.
•
A define home is initiated with the
home position outside the position
rollover range.
•
A preset position is initiated that
specifies a position outside the position
rollover range.
Set motion command to a position within
the position rollover range.
E34
Ground Fault
Wiring error.
Check motor power wiring.
Motor internal ground short.
Replace motor.
Internal malfunction.
Disconnect motor power cable from drive
and enable drive with current limit set to 0.
If fault remains, call your A-B
representative. If fault clears, then a wiring
error or motor internal problem exists.
E35
Precharge Fault
Low AC input voltage.
Check input AC voltage on all phases.
Internal malfunction.
Call your A-B representative.
E36
Power Circuitry Overtemperature
Excessive heat exists in the power circuitry.
•
Reduce acceleration rates.
•
Reduce duty cycle (ON/OFF) of
commanded motion.
•
Increase time permitted for motion.
•
Use larger Ultra3000 and motor.
•
Check tuning.
E37
AC Line Loss
One or more phases of the input AC power
is missing.
Check input AC voltage on all phases.
E38
RESERVED
Call your local Allen-Bradley
representative.
Error
Code
Problem or Symptom
Possible Cause(s)
Action/Solution
