User manual

Publication 1756-RM093F-EN-P - January 2010 89
Appendix C
Reaction Times
Introduction
System Reaction Time
To determine the system reaction time of any control chain, you must
add up the reaction times of all of components of the safety chain.
System Reaction Time = Sensor Reaction Time + Logix System
Reaction Time + Actuator Reaction Time
System Reaction Time
Logix System Reaction Time
The following sections provide information on calculating the Logix
System Reaction Time for a simple input-logic-output chain and for a
more complex application using produced/consumed safety tags in
the logic chain.
Topic Page
System Reaction Time 89
Logix System Reaction Time 89
System Reaction Time
Sensor
Reaction Time
Input Reaction
Time
Safety Task
Reaction Time
Output
Reaction Time
Actuator
Reaction Time
Logix System Reaction Time
Input Module
Input Connection
Logic
Output
Connection
Output
Module