Mitsubishi Melsec-A Series User Manual page 35

3. SPECIFICATIONS
/MELSEC
1 turn
of PG
-
+
~
(b) Stop and dwell timer time-out
The sequence of events is as follows (See Fig. 3.13-1
1:
0
Zeroing signal received
-
move in appropriate direction.
0
"Zeroing dog" on
-
start decceleration to creep speed and
0
Work is stopped by mechanical stopper.
0
Dwell timer times out
-
zeroing complete.
start dwell timer.
(c) Stop and signal from drive unit
The sequence of events is as follows (See Fig. 3.13-2):
0
Zeroing signal received- move in appropriate direction.
0
"Zeroing dog" on
-
start decceleration to creep speed.
0
Work is stopped by mechanical stopper.
0
Feedback signal from drive unit (e.g. torque limit exceeded),
zeroing complete. (The feedback signal is fed into the zero-
phase signal input).
Zeroing speed
Actuator signal starts deceleration.
Creep speed
Mechanical stop
1
Fig. 3.13
Home
Positioning Using Stop Signal
(3)
Zeroing address
0
This address is set as the present value of the home position
0
S e t
the zeroing address to either the upper or lower stroke
upon completion of zeroing.
limit set in the parameters.
(4) Zeroing speed
0
Sets the zeroing speed. (Refer to Fig. 3.14.)
3-20
IB INAI 66101-C