Communication; Stability; Operation - Galil Motion Control CDS-3310 User Manual

Communication

SYMPTOM
Using terminal emulator, cannot
communicate with controller.
Same as above

Stability

SYMPTOM
Motor runs away when the loop is
closed.
Motor oscillates.

Operation

SYMPTOM
Controller rejects command.
Responded with a ?
Motor does not complete move.
During a periodic operation, motor
drifts slowly.
Same as above.
CDS-3310
CAUSE
Selected comm. port incorrect
Selected baud rate incorrect
CAUSE
Wrong feedback polarity.
Too high gain or too little
damping.
CAUSE
Anything.
Noise on limit switches stops the
motor.
Encoder noise
Programming error.
REMEDY
Try another comport
Check to be sure that baud rate
same as jumper settings on
controller, change as necessary.
REMEDY
Invert the polarity of the loop by
inverting the motor leads (brush type)
or the encoder.
Decrease KI and KP. Increase KD.
REMEDY
Interrogate the cause with TC or
TC1.
To verify cause, check the stop
code (SC). If caused by limit
switch noise, reduce noise.
Interrogate the position
periodically. If controller states
that the position is the same at
different locations it implies
encoder noise. Reduce noise. Use
differential encoder inputs.
Avoid resetting position error at
end of move with SH command.
Chapter 9 Troubleshooting
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