Overview Of Redundancy Modes - Siemens SICAM AK Manual

Redundancy via SCA-RS
1.1.5

Overview of Redundancy Modes

Below the various redundancy modes are explained with the help of rough schematic
representations. Please note, that the representations are merely examples.
Example for CPU redundancy:
CPU redundancy with the predefined redundancy pair C-CPU 4 and 5 with fixed installed
HSL, the FUD runs for instance on both C-CPUs. The voting between both BSEs is performed
automatically by the M-CPU. The overview of a total system realized with CPU redundancy
can be found in section
Connected.
Example for AU redundancy with SCA-RS:
Global redundancy switchover: all SEs of an AU are switched active/passive.
Line-by-line redundancy switchover: the SEs of an AU are switched active/passive selectively.
Please note the distances between the AUs and SCA-RS, see detailed hardware
configurations in sections
20
1.2.1.3, SICAM AK - SICAM TM PE, Electrically and Optically
1.3.1.1 ff.
Unrestricted SICAM RTUs, SICAM AK Redundancy
Edition 10.2016, DC2-026-2.07