Rockwell Automation AADvance Controller Safety Manual - Manual (Page 38)

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3-4 Document: 553630
ICSTT-RM446K-EN-P Issue: 10 _C
Safety Manual (AADvance Controller)
CPU A 1 x T9110 Processor Module, T9100 Base Unit
O/P A T9451 Digital Output Module, 24V dc, 8 Channel +
T9851 Digital Output TA, 24V dc, 8 Channel, Simplex
T9300 I/O Base Unit or
1 x T9481/T9842 Analogue Output Module, 3/8 Ch, Isolated +
T9881 Analogue Output TA, 8 Ch, Simplex
SIL2 Output Architecture
A SIL2 output architecture has a single output module with single
processor and single or redundant input modules.
The illustration shows a SIL2 single output arrangement where the output
and processor modules operate in 1oo1D under no fault conditions and
will fail-safe on the first detected fault.
Digital Output
For Digital Output Modules the following applies:
 For energize to action high demand applications you must use dual
digital output modules.
Analogue Output
For Analogue Output the Following applies:
 The fail-safe state current of the Analogue Output module is less than
2mA.
 For energize to action high demand applications you must use dual
analogue output modules.
Table 5: Modules for SIL2 Fault Tolerant Output Architecture
Position Module Type
I/P A T9401/2 Digital Input Module, 24V dc, 8/16 Channel. +
T9801 Digital Input TA, 16 Channel, Simplex
or
T9431/2 Analogue Input Module, 8/16 Channel +
T9831 Analogue Input TA, 16 Channel, Simplex