Siemens SIRIUS 3RK3 Equipment Manual page 176

Operation
6.1 Response times
Figure 6-5
Reaction time "sensor - actuator"
(in error-free operation)
Fault reaction time "sensor - actuator"
Formula
S
IN
Q
A
t
RSA
t
FRSA
176
Reaction times "sensor - actuator" - Part 2
Explanation
Sensor (provides an OFF or ON signal)
Input terminal
Output terminal
Actuator
Reaction time of the system from a sensor (S) to an actuator (A)
(in error-free operation)
Fault reaction time of the system from a sensor (S) to an actuator (A)
t = t + t
RSA S
t = t + t
FRSA S
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
+ t + t + t
IN RL Q A
+ t + t + t
IN FRL Q A