User`s manual

7-18
(2) Connectable input device
The followings are sensors and switches, which can be connected as input. See below for selection
and connection of the input device.
- DC input device
- AC input device
In cases of 1, 2, 3, 4, and 5, use a transistor having current driving capacity lager than that of the
constant input current of the DC input module.
In cases of 1 and 7, pay attention to leakage current at OFF. (When leakage current is higher than
the OFF input current level of the input module, the proximity switch may not turn OFF.)
Be careful that voltage output type DC input
device shown in the right may not be
connected. (Driving capacity of an output
transistor should be higher than the ON level
of the input module).
DC 2-lines system
IN
COM
1
IN
COM
Contact point output type
DC input module
5
IN Output
0V
COM
NPN current output type
DC input module
3
+
Constant
current
circuit
IN Output
0V
COM
PNP current output type
DC input module
4
+
DC input module
IN Output
0V
COM
NPN open-collector output type
2
+
Sensor
power
supply
DC input module
Sensor
power
supply
Sensor
power
supply
Power switch
main circuit
IN
COM
Contact point output type
AC input module
6
IN
COM
AC open/close type
AC input module
7
~
~
Proximity
switch
main circuit
Output
0V
Voltage output type
Positive side
of power line