Home Position Return - Mitsubishi Electric MR-J4 Instruction Manual

15. USING A LINEAR SERVO MOTOR
2) Specify the setting value that is an approximately 70% of the value set when [AL. 50 Overload 1],
[AL. 51 Overload 2], [AL. 33 Overvoltage], [AL. E1 Overload warning 1], and [AL. EC Overload
warning 2] occurred as the final setting value. However, if [AL. 27 Initial magnetic pole detection
error] occurs with this value, specify a value intermediate between the value set at [AL. 50
Overload 1], [AL. 51 Overload 2], [AL. 33 Overvoltage], [AL. E1 Overload warning 1], and [AL. EC
Overload warning 2] and the value set at the magnetic pole detection alarm as the final setting
value.
3) Perform the magnetic pole detection again with the final setting value to check there is no
problem.
(c) Setting example
Linear encoder magnetic
pole detection
[Pr. PL09] setting
Alarm
In this example, the final setting value of [Pr. PL09] is 49 (Setting value at the alarm occurrence = 70
× 0.7).

15.3.3 Home position return

30
Occurring
Not occurring
While increasing the setting value of [Pr. PL09], carry out the
magnetic pole detection repeatedly.
POINT
Change the third digit value of [Pr. PL01] according to the linear encoder
resolution.
The incremental linear encoder and the absolute position linear encoder have
different reference home positions at the home position return.
For the linear encoder, a home position (reference mark) of the linear encoder is
necessary in the home position return direction. In addition, install a dog so that
the mover passes the dog, decelerates to the creep speed, and passes the
home position (reference mark).
When you configure as follows, move the mover to LSN with JOG operation and
perform home position to perform it in safe.
Returnable area:
Home position return can be performed
when started from this area.
LSN
Home position return direction
35 40 45
Non-returnable area:
Home position return cannot be performed
when started from this area.
Dog
Home position of linear encoder (reference mark)
15 - 18
65 70
An alarm has occurred
when the setting value
of [Pr. PL09] is set to 70.
LSP