3.6 Features and functions of the MSS 3RK3
Features of the 3RK3 central units MSS 3RK3
Basic Advanced
ASIsafe ba‐
sic
ASIsafe ex‐
tended
General characteristics
Certied acc. to
• SIL 3 per EN 61508
• PL e/Cat. 4 per EN ISO 13849-1
✓ ✓ ✓ ✓
Modularity / expansion capability with expansion modules ✓
(max. 7)
✓
(max. 9)
‑ ✓
(max. 2)
Very simple parameterization with extensive Safety ES parameteriza‐
tion software
✓ ✓ ✓ ✓
Low wiring eort and high connection depth using function combi‐
nations in the software
✓ ✓ ✓ ✓
Safety-related, freely parameterizable sensor inputs 8 8 2 4
Test outputs for sensor supply and monitoring 2 2 2 2
Standard inputs ‑ ‑ 6 4
Safety-related two-channel relay outputs 1 1 1 1
Safety-related two-channel semiconductor outputs 1 1 1 1
Communication
Data exchange with PROFINET
3)
with optional PROFINET interface - ✓ ✓ ✓
PROFINET IO Master independently of automation system with op‐
tional PROFINET interface
3)
- ✓ ✓ ✓
Data exchange over PROFIBUS with optional DP interface module ✓ ✓ ✓ ✓
Integration into the automation environment with a GSD on each
PROFIBUS-DP master irrespective of the automation system with op‐
tional DP interface module
✓ ✓ ✓ ✓
Access with Safety ES
Conguration and diagnostics through the device interface ✓ ✓ ✓ ✓
Conguration and diagnostics over PROFIBUS ✓ ✓ ✓ ✓
AS‑i functionality
• Simulation of non-safety-related AS‑i slaves
‑ ✓ ✓ ✓
• Simulation of safety-related AS-i input slaves
‑ ✓ ✓ ✓
• Control of safety-related AS-i outputs
‑ ✓ ✓ ✓
• Representation of safety-related AS-i outputs
‑ ✓ ✓ ✓
• Monitoring of non-safety-related AS‑i slaves
‑ ✓ ✓ ✓
• Monitoring of safety-related AS-i input slaves
‑ ✓ ✓ ✓
• AS-i Power24V suitable
‑ ✓ ✓ ✓
Diagnostics
Diagnostics using LEDs ✓ ✓ ✓ ✓
Diagnostics using Safety ES ✓ ✓ ✓ ✓
Diagnostics using PROFINET
3)
- ✓ ✓ ✓
Diagnostics using PROFIBUS ✓ ✓ ✓ ✓
Overview
3.6 Features and functions of the MSS 3RK3
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 47
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