6.5.7.5 Simulation of safety-related AS-i input slaves
An MSS 3RK3 with AS-i interface can simulate safety-related AS‑i input slaves on the AS‑i bus in
order to send safety-related signals to the AS-i bus:
• The MSS 3RK3 ASIsafe basic can simulate up to 8 safety-related AS‑i input slaves.
• The MSS 3RK3 ASIsafe extended can simulate up to 10 safety-related AS‑i input slaves.
• The MSS 3RK3 Advanced can simulate up to 12 safety-related AS‑i input slaves.
These signals can be monitored and evaluated by other safety monitors.
Note
Exchange of safety-related signals
If safety-related output slaves for controlling safety-related AS-i outputs are simulated
simultaneously, the number of simulated safety-related AS-i input slaves are reduced
accordingly.
Terminal designation in Safety ES
The input signals of the expansion modules of the MSS 3RK3 can be wired in the interconnection
logic in Safety ES to logical terminals, which provide their values as simulated safety-related AS-
i input slaves on the AS-i bus.
Terminal designation of the output cell Explanation
SLOT3_ASI#xx-F-S1&2 Sensor signal from MSS 3RK3 to AS‑i master that can be eval‐
uated by an AS-i safety monitor
xx: AS-i address
Operation
6.5 Connecting to the AS-i master via AS-Interface
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 219
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