15
Rev. 1.0
0006302011
SSM23C User Manual
+86-400-820-9661
3.3 Inputs and Outputs
The SSM23C has three optically isolated inputs that use 5 to 24V volts logict
3.3.1 Connector Pin Diagram
3.3.2 IN1 & IN2 Inputs
IN1 and IN2 digital inputs are designed for high speed digital input operation between 5 and 24
volts. The diagrams below show how to connect them to various commonly used devices like
sensors, switches, relays, PLCs, etc.
SSM23
Programmable
digital inputs
Output 2
Output 1
IN1+
IN2+
IN2-
+5v to +24v out
IN1-
IN3+
IN3-
Output 3
Connecting to Indexer with Sinking Outputs
Indexer
With
Sourcing
Outputs
Indexer
With
Sinking
Outputs
SSM23
5-24V
High
Speed
Inputs
Output 1
IN1+
Output 2
Output 3
COM
IN1-
IN2+
IN2-
IN3+
IN3-
Connecting to Indexer with Sourcing Outputs
SSM23
5-24V
High
Speed
Inputs
Output 1+
Output 1-
IN1+
IN1-
IN2+
IN2-
Output 2+
Output 2-
Output 3+
Output 3-
IN3+
IN3-
5 to 24
volt
Power
Supply
SSM23
Connecting the Input to a Switch or Relay
Switch or Relay
(closed = logic low)
+
-
IN-
IN+
Connecting to Indexer with Differential Outputs
(Many high speed indexers have differential outputs)
5 to 24
volt
Power
Supply
SSM23
Connecting an NPN type Proximity Sensor to an input
(when prox sensor activates, input goes low)
+
-
IN+
IN-
out
put
+
NPN
Proximity
Sensor
−
5 to 24
volt
Power
Supply
SSM23
Connecting an PNP type Proximity Sensor to an input
(when prox sensor activates, input goes low)
out
put
+
PNP
Proximity
Sensor
-
+
-
IN+
IN+
Indexer
With
Differential
Outputs
Inside drive
RES
IN1+
IN1-
IN2+
IN2-
IN3+
IN3-
OUT+
OUT-
I/O
Connector
