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
Article number
3BSE072270R1
Redundancy
Yes
High Integrity
Yes
Clock Frequency
133 Mhz
Performance
-
Memory
64 MB
RAM available for application
-
Flash memory for storage
No
Detailed data
Processor type
MPC866
Switch over time in red. conf.
Max 10 ms
Flash PROM for firmware storage
4 MB
Power supply
24 V DC (19.2-30 V DC)
Power consumption +24 V typ/max
160 / 250 mA
Power dissipation
3.8 W
Dimensions
Width
59 mm (2.9 in.)
Height
186 mm (7.3 in.)
Depth
127.5 (5.0 in.)
Weight (including base)
0.7 kg (1.5 lbs)
