Interface Circuits - Omron OMNUC W Series Manual

4.3.4 Interface Circuits

The following diagram shows an example of connections between a host controller and the
I/O signal for a Servo Driver.
Sequence Input Circuit
The sequence input circuit interface connects through a relay or open-collector transistor cir-
cuit. Select a low-current relay, otherwise a faulty contact will result.
24 VDC
50 mA min.
Output Circuit
Any of the following two types of Servo Driver output circuits can be used. Form an input
circuit at the host controller that matches one of these types.
• Connecting to an Open-collector Output Circuit
Alarm code output are open-collector transistor output circuits.
Connect an open-collector output circuit through a photocoupler, relay, or line receiver
circuit.
Servo Driver end
0 V
Servo Driver end
0 V
Note The maximum allowable voltage and current capacities for open-collector output circuits are as
follows:
• Voltage: 30 V DC max.
• Current: 20 mA DC max.
Servo Driver
3.3 kΩ
+24 VIN
ORG, etc.
Relay
5 to 12 V DC
Photocoupler
Servo Driver end
P
0 V
Photocoupler
5 to 12 V DC
P
0 V
Line Receiver
4-9
4.3 Servo Driver I/O Signals
Servo Driver
24 VDC
3.3 kΩ
50 mA min.
+24 VIN
ORG, etc.
Open Collector
5 to 12 V DC
Relay
0 V
0 V
Relay
4