The Home Position Deviates At The Homing; The Position Deviates During Operation After The Homing - Mitsubishi Electric MR-JET- G Series User Manual

The home position deviates at the homing

• The home position deviates at the homing.
Possible cause
1.
When performing the dog type homing, the
point where the proximity dog turns off is close
to the point where a Z-phase pulse is detected
(CR input position).
2.
The in-position range is too large.
3.
The proximity dog switch has malfunctioned or
the proximity dog switch is improperly
mounted.
4.
The program on the controller side is incorrect.

The position deviates during operation after the homing

• The position deviates during operation after the homing.
Possible cause
1.
The electronic gear or the feed length
multiplication is incorrect.
2.
The servo gain is too low or the response of
the auto tuning is too low.
3.
The proportional control (PID control) is
enabled.
4.
The in-position range is too large.
5.
Mechanical slippage occurred or the backlash
of the mechanical part is too large.
Check/action method
Check if a fixed amount (in one revolution) deviates. Adjust the position of the
proximity dog.
Set the value in [Pr. PA10 In-position range] for a narrower range than the
current setting.
Repair or replace the proximity dog switch. Adjust the mounting of the
proximity dog switch.
Review the program on the controller side, such as home position address
settings and sequence programs.
Check/action method
Review the setting of the electronic gear or the feed length multiplication.
Refer to "Command unit select function" and "Electronic gear function" in the
following manual.
MR-JET User's Manual (Function)
Check if the trouble is solved by increasing the auto tuning response ([Pr.
PA09]).
Adjust the servo gain.
Disable the proportional control (PID control).
Review the setting of [Pr. PA10 In-position range].
Check for a slip or backlash in the mechanical part.
1 SERVO AMPLIFIER TROUBLESHOOTING
1.4 Trouble which does not trigger an alarm/warning
1
Model
[JET-G]
Model
[JET-G]
101