Rockwell Automation 8000 Series TMR System - Manual (Page 29)

OPERATOR AND MAINTENANCE MANUAL
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7.3 TMR INTERFACE MODULE REPLACEMENT
This procedure is only applicable when the TMR Interface module has failed (faulty
slice) and no standby module is configured in the 8000 Series Controller.
1. Insert the replacement module in the adjacent slot.
2. After the replacement module has been educated, remove the faulty module.
3. Restart the system using the ‘START APPLICATION’ procedure from the
Workbench.
Note: If a catastrophic failure of the TMR Interface module has occurred, the replacement
module may be fitted in the same slot as the failed module and the system re-
started as described above.
7.4 ACTIVE/STANDBY CHANGEOVER
8000 Series Expander Interfaces, 8000 Series Expander Processors and 8000
Series TMR Interface operate in the active/standby mode when a spare module is
fitted in the adjacent slot. Fitted spare modules are not required to achieve fault
tolerant operation of the system.
Failures occurring in any of these modules automatically initiate an active/standby
changeover, if a spare module is fitted. If no spare is fitted, insert a module of the
same type, with compatible firmware and hardware, into the adjacent slot. Once the
previously standby module has been educated, indicated by the Educated LED
adopting the steady green state, the faulty module may be removed for repair.
Please refer to ICS Triplex Technology for advice on compatibility.
8000 Series TMR Processor: If the system.ini file in the replacement module is
identical to the installed module then a changeover occurs as above. If the
replacement TMR Processor has a different system.ini file then the replacement
module is educated with the system.ini file and application. At this stage, the
replacement module has not yet initialised and to indicate this, the faulty module
stage indicates Inhibit. The replacement module must be removed from the chassis
power and then plugged back in to initialise the ‘boot’ file. When this has been
done, the changeover occurs and the faulty module can be removed from the
system.