Rockwell Automation AADvance Controller Solutions Handbook - Manual (Page 65)

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Document: 553631
(ICSTT-RM447J_EN_P) Issue: 09:
3-1
The controller supports a range of architectures. This chapter describes how to build a
range of architectures configurations and includes selected examples that illustrate the
alternative options. The modular construction of the controller makes it easy to create
module arrangements and these can be tailored for a particular application.
In This Chapter
Fundamental Architectures .............................................................................. 3-1
Simplex I/O Architecture .................................................................................. 3-1
Dual Architecture for Fault Tolerant Applications..................................... 3-5
Triple Modular Redundant Architecture ...................................................... 3-7
Fundamental Architectures
The standard AADvance modules can be arranged to provide three fundamental
architectures based on simplex, dual and triple modular redundant processors
modules. To these can be added I/O modules for redundant and/or fault tolerant
configurations based on the following arrangements:
 Input modules in simplex, dual and triple modular redundant formations
 Output modules in simplex and dual arrangements
An AADvance system can mix different I/O architectures within one controller — for
example simplex and dual input modules with dual processor modules. The modular
construction of the controller enables you to create numerous other arrangements
that can be tailored for a particular application.
Once a system has been built and commissioned it can be expanded using any of the
architectures described in this chapter. However, this expansion can be carried out
with an on-line update.
Simplex I/O Architecture
A simplex configuration uses one input module for a field input, one output module for
a field output, and one processor module. Each module will fail safe on the first
detected fail danger fault and the process under control will shut down.
NOTE: To keep these examples simple the illustrations show only T9401 digital input
modules being used; however, T9431 analogue input modules or a mixture of the two
can be used instead.
Chapter 3
Building Architectures with TUV Approved Modules