3.6 Servo Section I/O Signal Connections
3.6.4 I/O Circuits
3-40
Sequence Output Circuits
Photocoupler Output Circuits
Photocoupler output circuits are used for the ALM (Servo Alarm Output) signal, /S-RDY (Servo
Ready Output) signal, and other sequence output signals. Connect a photocoupler output cir-
cuit to a relay or line-receiver circuit.
Note: The maximum allowable voltage and current range for photocoupler output circuits are as follows:
•
Maximum allowable voltage: 30 VDC
•
Current range: 5 mA DC to 50 mA DC
Incorrect wiring or incorrect voltage application to the output circuits may cause short-circuit fail-
ures.
If a short-circuit failure occurs as a result of any of these causes, the holding brake will not work.
This could damage the machine or cause an accident that may result in death or injury.
Example for Relay Circuits
Example for Line Receiver Circuit
Important
0 V
S
ERVOPACK
5 VDC to
3
0 VDC
Relay
5 VDC to
3
0 VDC
S
ERVOPACK
