Mitsubishi Electric MELSEC Q Series Programming Manual page 411

6 POSITIONING CONTROL
(c) When the proximity dog is set in the home position return direction, the
proximity dog is turned OFF during travel to reverse direction of home
position return, and the zero point is not passed (zero pass signal:
M2406+20n OFF), it continues to travel in the reverse direction of home
position return with home position return speed until the zero point is passed.
The zero point is passed again during deceleration by zero point pass, the
home position becomes this side compared with the case to pass zero point
at the time of the proximity dog OFF.
Acceleration time Deceleration time
Home position
V
return direction
Home position
return start
4)
Home position
return speed
2)
1)
Creep speed
5)
Home position
return speed
Proximity dog
6 - 224
1) It travels to preset direction of home
position return with the home position
return speed.
2) A deceleration stop is made by the
proximity dog ON.
3) After a deceleration stop, it travels to
reverse direction of home position return
with the home position return speed.
4) After proximity dog OFF, it travels to
zero point and a deceleration stop is
made.
5) After a deceleration stop, it travels to
direction of home position return with the
creep speed, and the home position
return ends with first zero point after the
proximity dog ON.
Home position
3)
Zero point