Siemens SIRIUS 3RK3 Equipment Manual page 183

Figure 6-13
The reaction times of subsystem 1 are calculated as follows:
Figure 6-14
Reaction time "sensor - actuator"
(in error-free operation)
Subsystem 1
Fault reaction time "sensor - actuator";
for AS-i output signal identical to t
Subsystem 1
Formula
t
RSA_3-1
t
FRSA_3-1
t
S
t
CYCL_1
t
RL
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
4
Signal flow of example 3 for MSS 3RK3 Advanced No. 1
Reaction times MSS 3RK3 Advanced No. 1 - example 3
Description
Reaction time "sensor - actuator" in error-free operation; only subsystem 1 is considered.
Fault reaction time "sensor - actuator"; only subsystem 1 is considered; for AS-i output
signal identical to t
Reaction time of the sensor (EMERGENCY STOP), see the documentation of the sensor.
Set cycle time of MSS 3RK3 Advanced No. 1
When AS-i is used, values between 15 ms and 60 ms can be set.
Reaction time of the logic of the MSS 3RK3 in error-free operation
t
RSA_3-1
RSA_1
RSA_3-1
6.1 Response times
= t + t + t + (2x t
S CYCL_1 RL_1 CYCLasi
t = t
FRSA_3-1 RSA_3-1
t = t
RL FRL
Operation
)
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