Mitsubishi Electric MELSERVO MR-J5 Series User Manual page 529

Homing operation
Precautions
• To execute homing securely, move the linear servo motor to the opposite stroke limit with the JOG operation from the
controller or by other means, then start homing.
• Change the setting value of [Pr. PL01.2 Homing stop interval setting] in accordance with the linear encoder resolution.
Incremental linear encoder
• When the linear encoder home position (reference mark) exists in the homing direction
For a proximity dog type homing, the nearest reference home position after proximity dog off is the home position.
Set one linear encoder home position in the full stroke, and set it in the position to be passed after the homing start. LZ
(Encoder Z-phase pulse) cannot be used.
Linear servo motor speed
0 mm/s
ON
Proximity dog signal
OFF
Reference home position
Linear servo motor position
*1 This can be changed with [Pr. PL01].
• When the linear encoder home position does not exist in the homing direction
If homing is performed from a position where the linear encoder home position does not exist in the homing direction, a
homing error may occur in the controller depending on the homing method. Error details differ depending on the controller
being used. If an error occurs, move the linear servo motor to the stroke end on the opposite side of the homing direction with
operations such as the JOG operation from the controller, then start homing.
Linear servo motor speed
0 mm/s
ON
Proximity dog signal
OFF
Linear servo motor position
Homing direction
Homing speed
1048576 pulses
Linear encoder home position
Homing speed
JOG operation
Stroke limit Linear encoder home position
Home position returnable area
Creep speed
*1
1048576 pulses × n
Home position
Homing direction
Creep speed
Home position
Home position non-returnable area
11 USING A LINEAR SERVO MOTOR
527
11.4 Basic functions
11