Mitsubishi Electric MELSERVO-J3 Series Instruction Manual page 683

16. INDEXER POSITIONING OPERATION
Description
The position 1. If the servo motor can be driven
deviates during safely, repeat acceleration and
operation after deceleration three or four times
the home to complete auto tuning.
position return. 2. Increase the auto tuning
response (parameter
No.PA09). (Except for manual
mode)
For geared servo motor, check
the setting of the electronic gear
(parameter No.PA06 and PA07).
Check the point table setting,
selection, start timing, etc.
The input value from the manual
pulse generator MR-HDP01 and
the command position (mm) do
not match.
The command from the controller
and the command position of the
servo amplifier do not match.
Check the in-position range
(parameter No.PA10).
Check method
The auto tuning response is low.
The reduction ratio is not calculated
correctly.
The setting of point tables and start
timing is incorrect.
Wiring or multiplication setting
(parameter No.PA05, manual pulse
generator multiplication 1 (TP1) and
manual pulse generator multiplication 2
(TP2)) of the manual pulse generator is
incorrect.
1. Command input pulses are
miscounted by noises.
2. Shielding the command cable is
faulty.
3. The command cable has a contact
failure or disconnected.
Communication command error
(An unintended command is inputted.)
The in-position range is too large.
Possible cause
16 - 128
Action
Increase the auto tuning response, and
readjust the gain. (Refer to chapter 9.)
Review the setting of the reduction
ratio.
1. Review the point table setting.
2. Review the controller programs.
1. Check the wiring.
2. Check if the multiplication is set
correctly.
Check the shield procedure of the
command cable.
Review the controller programs and
protocol.
(Refer to chapter 3.)
Set a narrower in-position range.