Magnum Energy MM Series Owner's Manual

Also see for MM Series: Installation and operation guide Installation and operation guide

Contents

Magnum Energy MM Series Owner's Manual Manual pdf 29 page image

© 2010 Magnum Energy, Inc.Charge Mode (not available on all models)Some MM Series models are equipped with a multi-stage batterycharger feature. This includes an automatic 4-stage charging process:Bulk, Absorb, Float and Full Charge; and a manual charge stage:Equalization (the ME-RC50 is required to enable Equalization charge).The automatic 4-stage charge process provides complete rechargingand monitoring of the batteries without damage due to overcharging.ConstantCurrentReducedCurrentReducedVoltageBulk volts‘AdjChargeRate’SettingIncreasedVoltageConstantVoltageMonitoredVoltageNo CurrentTimeFloatvoltsMonitoredCurrentAbsorb Time(determined bythe ‘Adj BattAmpH rs’ setting)BulkChargingAbsorbChargingFloatChargingDCVoltageDCCurrentFullChargeGoes to FullCharge after 4hours in FloatChargeBulk and Float voltage settings aredetermined by the ‘Battery Type’ selectionFigure 12, Automatic 4-Stage Charging GraphProtection ModeThe inverter is protected against five fault conditions, and in normalusage it will be rare to see any. If there is a situation the inverter can’thandle, then it will shut down and attempt to protect itself, the batterybank, and your appliances. If there is a condition that causes one ofthe following five faults to be enabled, refer to the Troubleshootingsection to diagnose and clear the fault.• Low Battery - Whenever the battery voltage falls to a low level (10VDC, default setting) for more than one minute, the inverter willshut down to protect the batteries from being over-discharged.• High Battery - In the event the battery voltage exceeds a highvoltage level (15.5 VDC), the inverter will automatically shut down— along with all connected loads — to protect the loads from un-regulated AC output voltage.• Overload - While inverting, the AC and DC sides are monitoring thecurrent levels. In the event of a short-circuit or overload condition,the inverter will shut down.• Over-temperature - If internal power components begin to exceedtheir safe operating temperature level, the inverter will shut down toprotect itself from damage.• Internal Fault - The inverter continually monitors several internalcomponents and the processor communications. If a condition oc-curs that does not allow proper internal operation, the inverter willshut down to protect itself and the connected loads.3.0 Operation23