Rockwell Automation AADvance Controller Solutions Handbook - Manual (Page 66)

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3-2 Document: 553631
(ICSTT-RM447J_EN_P) Issue: 09:
Solutions Handbook (AADvance Controller)
Low Demand SIL2 Architecture
This is an example of a SIL2 controller which is suited to low demand mode
applications with de-energize and energize to action outputs. The T9801 and T9851
illustrated are the associated simplex termination assemblies that mate with the T9401
and T9451 I/O modules. This arrangement is also suitable for non-safety applications.
This example supports 8 field inputs and 8 outputs. There is space for two more
processor modules and one more I/O module. To further expand the I/O capacity you
would need to add I/O base units then the required number of I/O modules and
termination assemblies.