Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 80)

80 Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
Chapter 10 Logic Levels A and B
Figure 99 - Logic of the Restart Function with Two Input OR
The timing diagram shows how the output of the Logic block responds to the
input signals and the Restart signal. Either or both inputs can be HI when the
Restart signal occurs for the output to go HI. If all inputs go LO, the output goes
LO.
Figure 100 - OR with Restart Timing Diagram
Restart
Input 1
Input 2
>
Input 1
Restart
Input 2
Output
HI
LO
HI
LO
HI
LO
HI
LO
OR