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battery back-up

Dear Expert

in a project , it is needed to have  Integral Power Back-Up to maintain power for the controllers, I/O signal conditioning devices and two-wire field instruments for a minimum period of 20 minutes upon loss of all DCS power. At this state the DCS should conduct the plant to a safe state. RAM battery Backup to be provided for CPU with capacity to maintain for at least 72 hours. Control system shall be capable to test back up battery every 8 hours. DCS should automatically receive the alarm & functionality of integral power backup.can you suggest any solution?

Thanks in advance

Amir
  • Andre Dicaire

    In reply to Prasenjit Dasgupta:

    the downloaded configuration is stored in NonVolatile Memory. there is a Cold Restart setting that must be configured that allows the controller to restart and load its configuration. Max window is 30 days.

    the controller indicates its restart location that can be local or workstation. during partial downloads the location will be workstation. cold restart download will update the NVM file and set location to the controller.

    in both cases the controller will restart if configured to do so. the download file may need to come from the proplus if restart location is Workstation.

    Andre Dicaire

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