Mitsubishi Electric MELSERVO-J4 MR-J4-TM Instruction Manual page 71

6. CONTROL MODE
6) Method 20 and Method 22 (Homing without index pulse)
The following figure shows the operation of Homing method 20. The operation direction of
Homing method 22 is opposite to that of Homing method 20.
ON
Statusword bit 10
Target reached
OFF
ON
Statusword bit 12
Homing attained
OFF
Forward
rotation
Servo motor speed 0 r/min
Reverse
rotation
ON
Z-phase
OFF
ON
DOG (Proximity dog)
OFF
ON
Controlword bit 4
Homing operation start
OFF
Acceleration time
constant
Home position return speed
3 ms or shorter
Forward
rotation
Servo motor speed
Reverse
rotation
Home position shift distance
Travel distance after proximity dog
When a home position return is started from the proximity dog
Servo motor speed
Deceleration time constant
Home position
return direction
0 r/min
+
Home position
return direction
Forward
rotation
0 r/min
Home position return start position
When the stroke end is detected
6 - 28
Home position shift distance
+
Travel distance after proximity dog
Creep speed
Home position return
position data
Proximity dog
Proximity dog
Home position
return position data
Home position return start position
Stroke end
The servo motor stops due to
the occurrence of [AL. 90].