Eaton ATC-900 Operation And Maintenance Manual

Also see for ATC-900: Instruction booklet Operation and maintenance manual Manual Instruction booklet Operation and maintenance manual

Instructional BookletPage 32 Effective: March 2021 Operation and Maintenance Manual,Automatic Transfer Switch Controller, ATC-900For more information visit: www.eaton.com IB140012ENSection 7: Historical & Event DisplayThe ATC-900 event and data logging history can be read on theATC-900's display or downloaded to a USB thumb drive. EveryATC-900 transfer switch includes a front panel mounted NEMA4X rated USB port for use in uploading downloading setpoints andevent data. Downloading event data provides the ability to morethoroughly analyze information using a PC. It also allows data tobe quickly e-mailed when off site troubleshooting support isrequired.The information is time-stamped and has detailed resolution. Anexample of a usage of this timing is with the 10 second rule forcritical applications. One could see the events and timing fromwhen power was removed to when the switch transferred includ-ing engine start and source available.Historical DataFigure 15. Historical Data ScreenThe Historical Data display indicates historical and cumulativecounter values as follows:• Source 1 Available• Source 1 Connected• Source 1 Engine Run• Source 2 Available• Source 2 Connected• Source 2 Engine Run• Tier 4 Timer•· Load Energized• Number of TransfersHistorical counter resets are date and time stamped events thatare captured in the event log.Event SummaryFigure 16. Event Summary ScreenThe ATC-900 controller stores a maximum of 500 time-stampedevents.Events include:1. Actions of the transfer sequence2. Alarms3. Changes to the setpoints4. Changes to the time/date5. Resetting a historical counter6. Engine Run test7. I/O State changesFor event details, the time-stamping resolution is 0.01 secondsEvents DetailsFigure 17. Event Summary Detail ScreenEach transfer event can be expanded to view a step-by-step, timestamped, sequence of operation. All metered values are alsologged and can be viewed on the Event Data Screen.