3.6 Servo Section I/O Signal Connections
3.6.4 I/O Circuits
3
Wiring and Connection
s
3-39
3.6.4
I/O Circuits
Sequence Input Circuits
Photocoupler Input Circuits
This section describes CN1 connector terminals 1 and 3 to 14.
Note: The 24-VDC external power supply capacity must be 100 mA minimum.
The SERVOPACK input circuits use bidirectional photocouplers. Select either a sink circuit or
source circuit according to the specifications required by the machine.
Note: The connection examples in
3.6.3 I/O Signal Wiring Examples
on page 3-37 are for sink circuit connections.
Example for Relay Circuits
Examples for Open-Collector Circuits
Sink Circuits
Source Circuits
Input Signal Polarity
Input Signal Polarity
Photocoupler
Internal signal level
Photocoupler
Internal signal level
ON
Low level
ON
Low level
OFF
High level
OFF
High level
4.7 k
Ω
+24VIN
24 VDC
S
ERVOPACK
E.g., /DEC
4.7 k
Ω
+24VIN
S
ERVOPACK
E.g., /DEC
24 VDC
24 V
+
-
S
witch
Photocoupler
Internal
s
ignal
level
Internal
s
ignal
level
Photocoupler
S
witch
S
ERVOPACK input
s
ide
24 V
+
-
S
witch
Photocoupler
Internal
s
ignal
level
Internal
s
ignal
level
Photocoupler
S
witch
S
ERVOPACK input
s
ide