Omron OMNUC W R88A-NCW152-DRT, Manual

Page: 40 / 292

4.3 Servo Driver I/O Signals
4-9
4
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.
„ 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.
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.
3.3 k
Ω
+24 VIN
Servo Driver
50 mA min.
3.3 k Ω
+24 VIN
Servo Driver
50 mA min.
ORG, etc.
Relay
ORG, etc.
Open Collector
24 VDC
24 VDC
0 V
P
Servo Driver end
Servo Driver end
Servo Driver end
0 V
Photocoupler
Relay
0 V
P
0 V
0 V
0 V
Photocoupler
Line Receiver
Relay
5 to 12 V DC
5 to 12 V DC
5 to 12 V DC