Fault Reaction Time Of The Logic (Single-Channel Actuator Circuit); Fault Reaction Time Of The Logic (Two-Channel Actuator Circuit) - Siemens SIRIUS 3RK3 Equipment Manual

6.1.3

Fault reaction time of the logic (single-channel actuator circuit)

Calculation
Figure 6-2
Fault reaction time of the logic
(for a single-channel actuator circuit)
For‐
mula
t
FRL1
t
CYCL
t
DELAY
t
TIMER
t
FB
6.1.4

Fault reaction time of the logic (two-channel actuator circuit)

Calculation
Figure 6-3
Fault reaction time of the logic (two-
channel actuator circuit)
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006
Fault reaction time of the logic for a single-channel actuator circuit
Description
Fault reaction time of the logic for a single-channel shutdown
Program cycle time of the MSS 3RK3
Input delay for monitoring functions and input cells at the inputs
Timer functions in the logic (timer)
Max. read-back time of the safety-related outputs:
• MSS central units (Basic / Advanced)
• 2/4 F-DI 2F-DO expansion module
• 4F-DO expansion module
Fault reaction time of the logic for a two-channel actuator circuit
t = (2 x t ) + t + t
FRL1 CYCL DELAY
1 ms
1 ms
5 ms
t = (2 x t ) + t + t
FRL2 CYCL DELAY
6.1 Response times
+ t
TIMER FB
TIMER
Operation
173