Rockwell Automation Allen-Bradley AADvance T9110, Solutions Handbook

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Rockwell Automation Publication ICSTT-RM447M-EN-P - July 2019 111
Chapter
7
Module Overview and Specifications
This chapter gives a brief technical overview and technical specification of each
module and related termination assemblies.
T9110 Processor Module
The T9110 processor module is the central processing unit of an AADvance
controller. It carries out the following process and safety controller tasks:
• Execution of the AADvance Safety Kernel to solve application logic
• Interfacing with the controller I/O modules, reading and processing
input data and writing output data
• Communication with other processor modules, both locally and across
the control network
• Initiation of periodic diagnostics for the controller
• Communication with other systems such as HMIs
• Message encapsulation and verification for secure channel
communication to other nodes
Each processor module is galvanically isolated from external power supplies
and data links so that any faults developed in the field cannot cause the module
to fail. The module will continue to operate if a failure occurs in one of its dual
redundant 24 Vdc power supplies. The module incorporates under- and over-
voltage protection for its internal power supplies, which show a 'power valid'
signal to the modules own diagnostics microprocessor.
The modules regularly initiates internal diagnostic tests which, together with a
watchdog circuit, monitor the processor performance. If the tests find a serious
fault, the processor module will shut down. A single processor system will fail-
safe. If a controller uses two or three processor modules and one processor
module develops a fault, you can fit a new processor module while the
controller is on-line without interrupting the operation of the other processors.
The new processor module automatically carries out self-education and
synchronizes with the other processors. Fault detection and fail-over in
redundant processor configurations is automatic and has no impact on
controller operation.