YASKAWA Sigma-V Series - Page 87

3.5 Examples of Connection to Host Controller
3-39
3
Wiring and Connection
(2) Safety Input Circuit
As for wiring input signals for safety function, input signals make common 0 V. It is necessary to make an
input signal redundant.
Sink Circuit Source Circuit
Input Signal Polarities Input Signal Polarities
Signal Level
Voltage
Level
Contact Signal Level
Voltage
Level
Contact
ON
Low (L)
level
0 V Close ON
High (H)
level
24 V Close
OFF
High (H)
level
24 V Open OFF
Low (L)
level
0 V Open
24 V
+
−
SERVOPACK input
24 V
+
−
SERVOPACK input
Input Signal Connection Example
24-V power supply
Switch
Fuse
/HWBB1+
4
3
/HWBB1-
/HWBB2+
/HWBB2-
3.3 kΩ
CN8
3.3 kΩ
SERVOPACK
6
5
3.3 kΩ
3.3 kΩ