Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 159

■Method 24 and Method 28 (Homing without index pulse)
The following figure shows the operation of Homing method 24. The operation direction of Homing method 28 is opposite to
that of Homing method 24.
ON
Statusword bit 10
Target reached
OFF
ON
Statusword bit 12
Homing attained
OFF
Acceleration time
constant
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
• When a home position return is started from the proximity dog
Home position
return direction
Forward
rotation
Servo motor speed
0 r/min
Reverse
rotation
Home position shift distance
+
Travel distance after proximity dog
• When the movement is returned at the stroke end
Forward
rotation
Servo motor speed
0 r/min
Reverse
rotation
Home position
shift distance
*1 This is not available with the software limit.
Home position return speed
3 ms or shorter
Proximity dog
Home position return start position
Home position
return direction
Proximity dog
Home position return
Home position return
position data
start position
Home position shift distance
Deceleration time
constant
Travel distance after proximity dog
Creep speed
Proximity dog
Home position
return position data
Stroke end
4.6 Home position return mode
+
Home position return
position data
*1
4 STARTUP
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