Rockwell Automation Publication ICSTT-RM446N-EN-P - April 2018
49
AADvance System Architectures
Chapter 3
module failure due to a dangerous fault has not been replaced within the
MTTR.
Table 7 - Modules for SIL 2 Fault Tolerant High demand Architecture
WARNING:
For High Demand mode applications you must use a minimum of
a dual processor configuration. High demand energize to action applications
will require dual output modules. (Analogue Output Modules where the
normal output current is less than 4mA are classed as energize to action
applications).
WARNING:
For Continuous Mode applications the measures defined in this
section for High Demand applications must be applied.
Position
Module Type
I/P A
2 × T9401/2 Digital Input Module, 24V dc, 8/16 C
T9802 Digital Input TA, 16 Channel, Dual
or
2 × T9431/2 Analogue Input Module, 8/16 channel
+ T9832 Analogue Input TA, 16 Channel, Dual
2 × T9300 I/O Base unit
CPU A & CPU B
2 x T9110 Processor,, T9100 Processor Base Unit
O/P A
2 × T9451 Digital Output Module, 24V dc, 8 Channel
+ T9852 Digital Output TA, 24V dc, 8 channel,
T9300 Base Unit
or
2 x T9481/T9842 Analogue Output Module, 3/8 Ch, Isolated
+ T9882 Analogue Output TA, 8 Ch, Dual
