Connection To Host Controller; Sequence Input Circuits - YASKAWA Σ-V Series User Manual

3 Wiring and Connection

3.4.1 Sequence Input Circuits

3.4

Connection to Host Controller

This section shows examples of SERVOPACK I/O signal connection to the host controller.

3.4.1 Sequence Input Circuits

(1) Photocoupler Input Circuit
CN1 connector terminals 6 to 13 are explained below.
The sequence input circuit interface connects through a relay or open-collector transistor circuit. Select a low-
current relay if a relay is used. Otherwise, a faulty contact will result.
Note: The 24 VDC external power supply capacity must be 50 mA minimum.
The SERVOPACK's I/O circuit uses bidirectional photocoupler. Select either the sink circuit or the source cir-
cuit according to the specifications required for each machine.
Note: • The connection example in section 3.2.3 shows the connection using the sink circuit.
• The polarity for turning the input signal ON or OFF differs between the sink circuit and the source circuit.
Signal
ON
OFF
3-24
Relay Circuit Example
SERVOPACK
+24 VIN 3.3 kΩ
24 VDC
/SI3
Sink Circuit
24 V
– SERVOPACK input
+
Input Signal Polarities
Voltage
Level
Level
Low (L) level 0 V
High (H) level 24 V
Open-collector Circuit Example
24 VDC
24 V
–
+
Input Signal Polarities
Contact Signal
Close ON High (H) level
Open OFF Low (L) level
SERVOPACK
+24 VIN 3.3 kΩ
/SI3
Source Circuit
SERVOPACK input
Voltage
Level Contact
Level
24 V
0 V
Close
Open