Programmable T8448 driver module card mechanical protection device

Programmable T8448 driver module card mechanical protection device

Technical data of product parameters

In the event of a second processor board failure occurring, the Trusted TMR Processor is T8448
isolated automatically from the remaining system operation. External interfaces are held in
their default condition, except where the interface is used for fault and diagnostic
information. Where possible, information indicating the source/cause of failure is retained
in the non-volatile memory. A fault reset command can be initiated either by the Front T8448
Panel Reset push-button or from the Engineering Workstation.
In an active/standby configuration (Companion Slot), on the first processor slice board
failure an active/standby Trusted TMR Processor changeover will occur automatically
providing the prerequisites have been met as described in the next section.
The power fail signals provide early notification of an impending supply failure, if this arises
the Trusted TMR Processor goes into the ‘Power Off’ mode.
System data, fault information and user program data are retained in the Trusted TMR
Processor non-volatile memory during ‘Power Off’ mode. User program data (such as T8448
internal and plant status information) is available to the user programs in ‘Online’ and ‘Test
and Load’ modesThe user will define the primary processor location as part of the complex equipment
definition within the IEC 61131 TOOLSET. This will always be defined as chassis 1 slot 0,
secondary processor locations are never defined in either the Configuration Manager or the
IEC 61131 TOOLSET.

Product picture display

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reminder

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