Troubleshooting
MultiFlex PCI 1000 Series User's Manual
205
Troubleshooting - Tuning a Servo Motor
Does the
axis reach the
target?
Yes
Increase the Proportional
gain and/or Integral gain
Does motion
occur without
errors?
Yes
No
The servo motor is moving
but the performance is
not acceptable
No
Either:
1) Increase Derivative gain
2) Decrease the
proportional gain.
3) Decrease Integral gain
Does the axis
oscillate?
No
Derivative gain may be
gain too high. Either:
1) Decrease derivative
gain
2) Increase the derivative
sampling period
If the problem persists contact
PMC technical support.
If the axis errors out, either:
1) Velocity is too high
2) Accel / decel too high
2) Proportional gain too
low
3) Following error too low
Yes
Do you hear a
grinding noise?
Yes
No
Near but not
at target?
Increase the Integral gain /
Integral limit.
Yes
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