Rockwell Automation AADvance Controller Safety Manual - Manual (Page 13)

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Document: 553630
ICSTT-RM446K-EN-P Issue: 10
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1-3
 Redundant operation is when modules within the different stages
(input, logic solving and output) are configured as dual or triple
modules.
Internal diagnostics enhance the fault tolerance capability. The AADvance
system has comprehensive internal diagnostics that detect and reveal both
covert and overt failures. These diagnostics will alert users to hidden
faults so that users can repair the system within the MTTR (used for the
PFD calculations) and maintain the system's fault tolerance and integrity
level.
The AADvance Controller
The AADvance controller is specifically designed for functional safety and
critical control applications, it provides a flexible solution for smaller scale
requirements. The system can be used for safety implemented functions
as well as applications that are non-safety but still critical to a business
process. This controller offers you the ability to create a cost-effective
system to suit any of the following applications:
 Critical process control
 Fire and gas protection systems
 Rotating machinery control systems
 Burner management
 Boiler and furnace control
 Distributed process monitoring and control
The AADvance controller is a logic solver and I/O processing device that
consists of processor modules, I/O modules and field termination
assemblies that can easily be assembled and configured. A system is built
up from one or more controllers, a combination of I/O modules, power
sources, communications networks and user workstations. How you
configure the system determines the type of application it can be used for.
An AADvance controller is particularly well suited to emergency shut
down and fire and gas detection protection applications by providing a
system solution with integrated and distributed fault tolerance. It is
designed and validated to international standards and is certified by TÜV
for functional safety control installations.
A Frequency Input Module (not yet released) will provide the functionality
to meet the requirements of turbo machinery governor control and
overspeed protection.
The significant benefits of the AADvance controller are its performance
and flexibility. Being designed to IEC 61508 it meets both SIL2 and SIL3
application requirements from the basic range of modules and mixed SIL
rated applications can be covered by this range of modules.