Allen-Bradley 1734-OBV2S

28 Rockwell Automation Publication 1734-UM013N-EN-P - September 2017
Chapter 2 Safety Inputs, Safety Outputs and Safety Data
Single-channel Mode
If an error is detected, safety input data and safety input status turn off.
Figure 7 - Normal Operation and Fault Detection (Not to Scale)
24V
0V
Test Output 0
Input Terminal 0
External Device
Fault Detected
ON
OFF
ON
OFF
ON
OFF
ON
OFF
24V
0V
ON
OFF
Safety Input 0
Status
Fault Detection
ON
OFF
ON
OFF
ON
OFF
Safety Input 0
Status
Safety Input 0
Data
Safety Input 0
Data
Input Terminal 0
Normal Operation
External Device
Test Output 0
Safety
I/O
Network
Data Sent
to the
Controller
Safety
I/O
Network
Data Sent
to the
Controller