Eaton SC300 Operation Handbook

Contents

SC300 Handbook122 Copyright © 2007-2018 Eaton Corporation. All Rights Reserved.IPN 997-00012-03 B2 Issue B2 July 2018TroubleshootingUse the table to troubleshoot minor installation and operational problems. For additionalassistance see contact details on page 153. Return items for replacement or repair with acompleted Equipment Incident Report on page 150.Problem Possible Cause Required ActionSC300 displays a dc powersystem alarm message.See Alarm Descriptions on page 133.SC300 LCD is blank andgreen Power On LED is off.RXP/power cable isdisconnected from the SC300.Connect cable from connector YS11 to thedc power system voltage feed module(see Connections on page 5). Wait forstart-up to complete.The ac supply is off and thebatteries are not connectedbecause the Low VoltageDisconnect (LVD) hasdisconnected.None. The power system including theSC300 will return to normal operationwhen the ac supply is within its specifiedvoltage range.Faulty Voltage Feed Module(VFM) or faulty SC300.Replace faulty unit.SC300 LCD is blank andgreen Power On LED is on.SC300 is in start-up mode Wait for start-up to complete. SeeStarting the SC300 on page 8.Faulty SC300 Replace faulty SC300.SC300 Red LED or YellowLED is on.An alarm is active. Check the type of alarm on the LCD orwith Web or PowerManagerII. See AlarmDescriptions on page 133.Unable to change settingsfrom SC300 keypad.Keypad access is set to ReadOnly or PIN Protected.See Keypad Access Security on page 13.Rectifier does not shutdownwhen LBRS is enabled.Load Based Rectifier Shutdownis not available with APR48-3G(prior to PR5), EPR48-3G,APR24-3G and CR48-3Grectifiers.See Load Based Rectifier Shutdown onpage 44.Monitor OK relay (RY6) isde-energized.An active alarm, digital input oranalog input is mapped to thisrelay.Check relay mapping. See DigitalOutputs on page 90.Problem with power orcommunications to I/O board.Check all connections (see Connectionson page 5).SC300 or I/O board softwarecorrupt or hardware fault.Replace faulty unit.Incorrect battery or loadcurrent readings.Bus voltage sense polarity isincorrect.Check the bus voltage sense polarity andcorrect if necessary.Incorrectly configured shuntinputs.Check shunt mapping and gain is correct.Current is within the BatteryState Threshold. See details onpage 69.None, normal operation.