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6 POSITIONING CONTROL
(3) Dwell time setting at the home position return retry
Reverse operation by detection of the external upper/lower limit switch and dwell
time function at the home position return start after stop by proximity dog OFF
are possible with the dwell time at the home position return retry in the home
position return retry function.
Dwell time at the home position return retry becomes valid at the time of
deceleration stop of the following 2) and 4). (Dwell time operates with the same
value.)
The temporary stop is made during time
set in the "dwell time at the home
position return retry".
The temporary stop is made during time
set in the "dwell time at the home
position return retry".
Home position
return direction
Proximity
dog
Zero
point
3)
1)
2)
6)
5)
4)
External limit switch
Home position
return start
1) It travels to preset direction of home position return.
2) If the external upper/lower limit switch turns OFF
before the detection of proximity dog, a deceleration
is made and the temporary stop is made during time
set in the "dwell time at the home position return
retry".
3) After a stop, it travels to reverse direction of home
position return with the home position return speed.
4) A deceleration is made by the proximity dog OFF
and the temporary stop is made during time set in
the "dwell time at the home position return retry".
5) After a stop, it travels to direction of home position
return.
6) Home position return ends. At this time, the "dwell
time at the home position return retry" is invalid.
Home
position
Fig. 6.45 Dwell time setting at the home position return retry
[Cautions]
(1) Possible/not possible of home position return retry function by the home position
return method is shown below.
Home position return
methods
Possible/not possible of home position
return retry function
Proximity dog type
Count type
Data set type
Dog cradle type
Stopper type
Limit switch combined type
: Possible, : Not possible