Mitsubishi Electric MR-J4 Instruction Manual page 586

15. USING A LINEAR SERVO MOTOR
(1) Incremental linear encoder
CAUTION
(a) When the linear encoder home position (reference mark) exists in the home position return direction
When you use an incremental linear encoder, LZ (Encoder Z-phase pulse) from the servo amplifier
will be the home position (reference mark) of the linear encoder.
(b) When the linear encoder home position (reference mark) does not exist in the home position return
direction
The home position return cannot be performed from the position which the home position of the
linear encoder does not exist in the home position return direction. Move the mover to the stroke end
on the opposite side of the home position return direction with the JOG operation from the controller
and others, and then perform a home position return.
Servo motor
speed
0 r/min
Proximity dog signal
LZ
(Encoder Z-phase pulse)
Machine position
If the resolution or the stop interval (the third digit of [Pr. PL01]) of the linear
encoder is large, it is very dangerous since the linear servo motor may crash into
the stroke end.
Servo motor
speed
0 r/min
ON
Proximity dog signal
OFF
ON
LZ
OFF
(Encoder Z-phase pulse)
Machine position
Home position return speed
ON
OFF
ON
OFF
Stroke end
Home position returnable area
Home position return direction
Home position return speed
Home position return direction
Creep speed
JOG operation
Linear encoder home position
15 - 19
Creep speed
Home position
Linear encoder home position
Home position Home position start position
Home position non-returnable area
Stroke end