Instruction manual

12
External operation function
Program control run/stop can be performed externally. See (Fig. 4.1-3) and (Fig. 4.1-4).
• External operation input terminals
External operation comprises 2 input types as follows.
Open collector input Contact (pulse) input
(Fig. 4.1-3)
• Program control run
As soon as terminals 14 and 17 change from Open to Closed, program control is performed.
• Program control stop
As soon as terminals 14 and 17 change from Closed to Open, program control stops.
If pattern end output is turned ON after program control ends, pattern end output stops
by changing terminals 14 and 17 from Closed to Open.
(Fig.4.1-4)
4.2 Wiring examples
[PCD-33A-R/M]
* For the relay contact output type (PCD-33A-R/M), it is recommended that
a surge absorber be installed between the electromagnetic switch coils to
prevent the unit from harmful effects of unexpected high level noise.
(Fig.4.2-1)
14
15
16
17
14
15
16
17
Electro-
magnetic
switch
Heater
Thermocouple
Electric furnace
Alarm unit
3-phase
Alarm unit
100 to 240V AC
or 24V AC/DC
*
Performs program control.
Program control RUN
Standby mode
Controller status
Contact
Closed
Contact Open
Standby mode
Contact Closed
Contact Open
Stops program control.
Contact
Open
Program control STOP
Program control is performed
when the contact is changed
from Open to Closed.
Program control stops when
the contact is changed from
Closed to Open.
Caution
For a 24V AC/DC power source,
do not confuse polarity when using
direct current (DC).