Rockwell Automation Publication ICSTT-RM447M-EN-P - July 2019 79
AADvance System Architectures Chapter 4
Figure 16 - Increased I/O System
The T9852 dual termination assembly can be used with both 8 channel and 16
channel input modules.
Triple Modular Redundant Architecture
A SIL 3 TMR architecture offers the highest level of fault tolerance for an
AADvance controller and consists of triple input modules, triple processors
and dual output modules.
If a failure occurs in an element of a channel, the channel processor will still
supply a satisfactory output which could be voted on because of the coupling
between the channels. This is why the triple modular redundant
implementation has a configuration that is inherently better than a typical
2oo3 voting system.
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