Communication; Stability; Operation - Galil Motion Control DMC-1600 Series User Manual

Communication

SYMPTOM
Using the Galil provided terminal,
cannot communicate with
controller.

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.
DMC-1600
CAUSE
Address selection in
communication does not match
jumpers.
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
Check address jumper positions,
and change if necessary. The
addresses 1000 or 816 are
recommended. Note -- for address
1000, jumper A2 and A4 . For
address 816, jumper A7, A6, A3,
A2.
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 • 163