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