YASKAWA E-S Series User Manual

4.5 I/O Signal Connections
4.5.3 I/O Circuits
4-18
4.5.3 I/O Circuits
Sequence Input Circuits
 Photocoupler Input Circuits
This section describes CN1 connector terminals 3 to 16. Relay connections are made with
transistor circuits. Select a low-current relay. If you do not use a low-current relay, a faulty con-
tact may result.

Electrical Specifications
The SERVOPACK input circuits use bidirectional photocouplers. Select either a sink circuit or
source circuit according to the specifications required by the machine.
Example for Relay Circuit
Item Characteristics Remarks
External power
supply
24 VDC ± 10% A power supply capacity of at least 75 mA is required for all 13 points.
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 kΩ
E.g., /DEC
SERVOPACK
24 VDC
+24VIN
SERVOPACK input side
Switch
Photocoupler
Internal
signal
level
Internal
signal
level
Photocoupler
Switch
24 V
+
−
SERVOPACK input side
24 V
+
−
Switch
Photocoupler
Internal
signal
level
Internal
signal
level
Photocoupler
Switch

YASKAWA E-S Series Specifications

General

Brand	YASKAWA
Model	E-S Series
Category	Servo Drives
Language	English