Formula Description
t
FRL
Fault reaction time of the logic of the MSS 3RK3; for AS-i output signal identical to t
RL
t
CYCLasi
AS-i cycle time, max. 5 ms
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Figure 6-15 Signal ow of example 3 for MSS 3RK3 Advanced No. 2
The reaction times of subsystem 2 are calculated as follows:
0665.
W
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W
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W
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Figure 6-16 Reaction times MSS 3RK3 Advanced No. 2 - example 3
Reaction time "sensor - actuator"
in error-free operation "sensor -
actuator"
(in error-free operation)
Subsystem 2
t
RSA_3-2
= (2x t
CYCLasi
) + t
RL_2
+ t
OUT
+ t
A
Fault reaction time "sensor - ac‐
tuator";
for two-channel actuator wiring
identical to t
RSA_1
Subsystem 2
t
FRSA_3-1
= t
RSA_3-1
t
RL
= t
FRL
Operation
6.1 Response times
SIRIUS 3RK3 Modular Safety System
184 Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
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