ABB AC 800M Controllers SM812 (HI controllers)

ABB AC 800M ControllersSM812 (HI controllers)

The prime function of SM812. is to provide intelligent supervision of a controller during non-SIL and SIL1-2 operations, and together with a PM867 form a 1oo2 diverse structure for SIL3 applications.

For high availability applications it is possible to have redundant SM812´s that work together with any of the two redundant CPUs. SM812 has a dedicated synchronization link to synchronize active and redundant SM for hot-insert and online upgrade. It is needed during hot-insert and online upgrade situations to copy data between two SM812s in a redundant setup.

The SM812 has a connector with three digital inputs and two digital outputs that can be used for safety-related digital I/O (not process I/O).

Features and benefits

• MPC866 Microprocessor running at 133 Mhz

• 64 MB RAM

• Provides supervision of the PM857. PM863 and PM867 controller during SIL1-2 operations and together with the PM857. PM863 and PM867 forms a 1oo2 diverse architecture for SIL3 applications

• Over voltage monitoring

• Internal voltage monitoring

• Supports hot swap

• Supports redundancy

• SM Link for synchronization of redundant pair

General info