Siemens SIRIUS 3RK3 Equipment Manual page 148

Description of the hardware
5.3 Connecting / wiring
①
Diagnostics display
②
Interface module
③
Central unit
④ ⑫
... Expansion modules:
• Maximum of 7 for MSS 3RK3 Basic
• Maximum of 9 for MSS 3RK3 Advanced
• 0 for MSS 3RK3 ASIsafe basic
• Maximum of 2 for MSS 3RK3 ASIsafe extended
⑬
Memory module
Figure 5-24 Maximum cable lengths of the MSS 3RK3
148
SIRIUS 3RK3
DEVICE
BF
SF
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006