Outback Power Systems GS8048 manual Operation

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Operation

will then enter Silent (see page 22) and continue repeating this part of the charging cycle until it disconnects from the utility grid.

If the reconnection was triggered by the Rebulk voltage setting, the inverter will require the charger to pass through the entire charge cycle, including the Absorb Voltage, Absorb Time, Float Voltage, and Float Time settings (as well as Offset). The inverter will continue repeating the Float part of the charging cycle until it disconnects from the utility grid.

See page 20 for more information on the battery charging cycle.

BENEFITS:

Mini Grid mode allows a system to take full advantage of renewable energy. Dependence on the utility grid can be minimized or eliminated.

In this mode, the inverter will offset the loads with excess renewable energy if it is available from the batteries. (See the previous page and page 19 for more information on the Offset function.)

This mode is similar to to the high-battery transfer (HBX) mode used by the MATE3 system display, but it has several differences (see below).

NOTES:

The Support and grid-interactive functions of the Radian inverter are unavailable in this mode.

This mode has similar priorities to the high-battery transfer (HBX) mode used by the MATE3 system display. However, it is not compatible with HBX mode and cannot be used at the same time. When using Mini Grid mode, HBX mode should be disabled to prevent conflicts.

When deciding whether to use Mini Grid mode or HBX, the user should consider various advantages of each.

Mini Grid logic is based in the Radian inverter and can function in the absence of the MATE3. HBX logic is based in the MATE3 and cannot function unless the MATE3 is installed and operating.

Mini Grid can use utility grid power to fully recharge the batteries on reconnection. HBX can only do so under specific circumstances.

HBX set points have a wide range of settings. Mini Grid uses settings which tend to prevent the batteries from excessive discharge; however, most of its settings are automatic and do not allow customization.

HBX works more efficiently when the renewable source is larger, but there is no specific requirement for renewable size. Mini Grid is unable to work properly unless the renewable source is larger than the size of the loads. (See previous page.) If this condition is not met, Mini Grid will not disconnect the inverter from the utility grid.

HBX can be combined with the settings of any other Radian input mode (Generator, UPS, etc.). The Mini Grid input mode is naturally limited to its own settings and does not have access to certain functions of other modes. (See the first bullet above.)

See page 32 and the MATE3 Owner’s Manual for more information on HBX.

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Contents Radian Series Inverter/Charger GS8048Trademarks Symbols Used AudienceDefinitions Terms and DefinitionsGeneral Safety Important Safety InstructionsTable of Contents List of Tables Table of ContentsList of Figures Introduction MATE3 System Display and Controller Pre-startup Procedures CommissioningFunctional Test StartupPowering Down Firmware UpdatesAdding New Devices CommissioningInput Modes OperationGenerator Support Operation Grid Tied UPS Uninterruptible Power Supply Backup Mini GridOperation Functions InvertingSearch InputAC Current Settings AC Source AcceptanceTransfer Offset Battery Charging Charging StepsNo Charging Bulk StageOffset Charging Stages Over Time1Float Timer SilentFloat Stage Repeated SilentNew Charging Cycle Absorption TimerNew Absorption Stage Battery Temperature Compensation EqualizationExamples Multiple-Inverter Installations Stacking OutBack HUB4 and MATE3Example of Parallel Stacking Arrangement Three Inverters Power Save Levels Auxiliary Terminals Operation Operation High Battery Transfer System Display-Based FunctionsAdvanced Generator Start AGS Grid Use TimeBasic Troubleshooting TroubleshootingTroubleshooting Symptom Possible Cause Possible Remedy Troubleshooting TroubleshootingSymptom Possible Cause Possible Remedy Hot or neutral Not be bonded Inverter may be behaving correctly Inverter output is being fed Troubleshooting Error Messages Error Troubleshooting Message Causes Possible RemedyMessage Definition Possible Remedy AC Freq Too HighCapacitors Disconnect Messages Voltage MaximumSell Status Messages Sell StatusSell Status Definition Troubleshooting Specifications Specifications for Model GS8048Electrical Specifications for Model GS8048 Value Mechanical Specifications for Model GS8048Environmental Specifications Regulatory SpecificationsSpecifications Environmental Specifications for All Models ValueGS8048 Inverter Settings Default Settings and RangesFirmware Revision Field Default Minimum Maximum OutBack Power Technologies Product RegistrationExtended Warranty Product RegistrationWarranty Year Limited Warranty for Radian ProductsHow to Arrange for Warranty Service TroubleshootingReturn Material Authorization RMA WarrantyOut of Warranty Returning Product to OutBackThis page Intentionally Left Blank Year Warranty IndexIndex Input Modes 11, 17, 20, 22This page Intentionally Left Blank