Omron OMNUC W R88A-NCW152-DRT, Manual

Page: 43 / 292

4 Connectors
4.4.3 I/O Signal Interface Circuits
4-12
4
„ CN4 Connector Specifications
4.4.3 I/O Signal Interface Circuits
The following diagram shows an example of connections between a host controller and the
I/O signals for a DeviceNet Unit.
„ Sequence Input Circuit
The sequence input circuit connects through a relay or open-collector transistor circuit.
Select a low-current relay, otherwise a faulty contact will result
.
„ Sequence Output Circuit
Notch output signals are used for photocoupler output circuits. Connect the notch output
signals to relays or line receiver circuits.
Note
The maximum allowable voltage and current capacity for photocoupler output circuits are as follows
:
• Voltage: 30 V DC max.
• Current: 50 mA DC max.
Part Signal Manufacturer
Connector 10120-3000VE (20P) Sumitomo 3M Ltd.
Connector shell 10320-52A0-008
−
+24VIN
3.3 k
Ω
STOP
24 V DC
50 mA min.
DeviceNet Unit
+24VIN 3.3 k
Ω
STOP
24 V DC
50 mA min.
DeviceNet Unit
Relay Open Collector
0 V
5 to 24 V DC
Relay
DeviceNet
Unit end
P
0 V
Relay Line Receiver
DeviceNet
Unit end
5 to 12 V DC