Allen-Bradley 1756-OBV8S User Manual

122 Rockwell Automation Publication 1756-UM013B-EN-P - October 2019
Appendix C Application and Wiring Examples for Safety Modules
When the module is wired as shown, it is suitable for applications that are rated
up to, and including, Category 4 and PLe as defined in ISO 13849-1. To achieve
that suitability rating, you may have to perform diagnostic testing of the safety
function.
One diagnostic test method is to configure the safety input channel for Safety
Pulse Test to test the circuit for short circuits to 24V DC. Safety input pairs must
be associated with different Test Output sources.
TO-1
TO-2
TO-3
TO-4
TO-5
TO-6
TO-7
IN-1
IN-2
IN-3
IN-4
IN-5
IN-6
IN-7
IN-8
IN-9
IN-10
IN-11
IN-12
IN-13
IN-14
IN-15
DC(+)
DC(+)
DC(-)
DC(-)
TO-0
TO-1
TO-2
TO-3
TO-4
TO-5
TO-6
TO-7
IN-0
TO-0
+
-
24V DC
SELV/PELV-listed
power supply
Channel Connections
This diagram shows devices that are connected to safety
input channels O and 1; and to test outputs 0 and 1.
You can connect devices to all 16 channels.

Allen-Bradley 1756-OBV8S Specifications

General

Brand	Allen-Bradley
Model	1756-OBV8S
Category	Control Unit
Language	English