Magnum Energy MMS1012 Owner's Manual

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Magnum Energy MMS1012 Owner's Manual Manual pdf 36 page image

© 2010 Magnum Energy, Inc.ConstantCurrentReducedCurrentReducedVoltageAbsorb volts‘AdjChargeRate’SettingIncreasedVoltageConstantVoltageMonitoredVoltageNo CurrentTimeFloatvoltsMonitoredCurrentAbsorb Time(determined bythe ‘Adj BattAmpH rs’ setting)BulkChargingAbsorbChargingFloatChargingDCVoltageDCCurrentFullChargeGoes to FullCharge after 4hours in FloatChargeAbsorb and Float voltage settings aredetermined by the ‘Battery Type’ selectionFigure 15, Automatic 4-Stage Charging GraphTransfer time - While in Standby Mode, the AC input is continuallymonitored. Whenever AC power falls below the VAC dropout voltage(80 VAC, default setting), the inverter automatically transfers backto Inverter Mode with minimum interruption to your appliances – aslong as the inverter is turned on. The transfer from Standby Mode toInverter Mode averages approximately 16 milliseconds. While the MMSSeries is not designed as a computer UPS system, this transfer timeis usually fast enough to hold them up. However, the VAC dropoutsetting has an effect on the ability of the loads to transfer withoutresetting. The lower this setting, the longer the effective transferwill be and therefore, the higher the probability for the output loadsto reset. This occurs because the incoming AC voltage is allowed tofall to a level that is so low that when the transfer does occur, thevoltage on the inverter’s output has already fallen to a low enoughlevel to reset the loads.The disadvantage of a higher VAC dropout setting is that smallergenerators (or large generators with an unstable output) may nui-sance transfer. This commonly happens when powering loads thatare larger than the generator can handle – causing the generator’soutput voltage to constantly fall below the inverter’s input VAC drop-out threshold.Info: You must use the ME-RC50 or ME-ARC50 remoteto adjust the VAC dropout setting – which in turndetermines the VAC dropout threshold.Info: When switching from Inverter Mode to StandbyMode, the inverter waits approximately 15 seconds toensure the AC source is stable before transferring.303.0 Operation