Eaton SC200 Operation Handbook

Also see for SC200: Installation and operation guide Installation and operation guide

MaintenanceCopyright © 2007-2011 Eaton Corporation. All Rights Reserved.IPN 997-00012-50H November 2011 103USB communicationsproblemIncorrect, disconnected or faultycable.Check a USB A/B cable is plugged intothe USB port and a PC USB port.Replace faulty cable.SC200 serial communicationsare disabled.Check S3P Access is enabled. See detailson page 95.DCTools not installed on PC orwrong version.Install latest version of DCTools.Download fromdcpower.eaton.com/downloads.Password required to changesettings.See Write Access Password on page 95.SC200 time/date is incorrect Time/date is different on SC200compared to DCTools/Web.None. Time shown on SC200 is UTC.Time on PC running DCTools/Web islocal time.Time needs to be set. See SC200 Internal Clock on page 14.SC200 time can be set, but isincorrect when SC200 restarts.Internal battery is dead. Return SC200 forservice. (If removed, the battery must bedisposed of according to themanufacturer's instructions.)String Fail Alarm The Battery Mid-pointMonitoring system has detecteda voltage imbalance in one ofthe battery strings.See Battery Mid-point Monitoring in thedc power system Installation andOperation Guide.A Battery Mid-point Monitoringsense wire is disconnected.Check the sense wires.I/O board Power/CommsOK LED is offI/O board is not powered orfaulty.Check connection to YH3 on I/O board.See Connections on page 3.Replace I/O board if faulty.I/O board Power/CommsOK LED is flashing.I/O board is responding to anIdentify command from theSC200.None, this is normal operation. Seedetails on page 70.LVD Status LED(s) (on I/Oboard) are on.LVD contactor is energized. None, this is normal operation.LVD Status LED(s) are off(I/O board Power On LED ison).LVD contactor is de-energized. None, this is normal operation.LVD Status LED(s) flashing. The contactor is in the wrongstate (SC200 internal state doesnot match signal from contactorauxiliary switch).Check the electrical and mechanicaloperation of the contactor and auxiliaryswitch.Check all wiring and connectors. SeeConnections on page 3.LVD Type setting is incorrect. Check LVD Type setting.