T9110 ICS TRIPLEX 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

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.