Xantrex Technology XFR 2800 manual Local Operation, Standard Operation

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Local Operation

Standard Operation

Output
Voltage		RL	VSET
Constant Voltage		RL

Mode Region			ISET
		Crossover Point		RL	VSET
		Crossover Point		RL	ISET	Where
VSET					ISET	Where
VSET						RL	Load Resistance
						RL	Load Resistance
		Constant Current		RL	VSET	VSET	Output Voltage Setting
		Mode Region			ISET	ISET	Output Current Limit Setting
						ISET	Output Current Limit Setting
0			Output
0	ISET		Current

Figure 3.1 Operating Modes

Constant Voltage Mode Operation The power supply will operate in constant voltage mode whenever the load current IL is less than the current limit setting ISET, or: IL < ISET (Note: IL = VSET / RL)

In constant voltage mode, the power supply maintains the output voltage at the selected value (VSET) while the load current IL varies with the load requirements.

Constant Current Mode Operation The power supply will operate in constant current mode whenever the load resistance is low enough that the load current IL is equal to the current limit setting ISET (Note: VL=ISETRL)

In constant current mode, the power supply maintains the output current at the selected value (ISET) while the load voltage varies with the load requirements.

Automatic Mode Crossover This feature allows the power supply to automatically switch operating modes in response to changing load requirements. If, for instance, the power supply was operating in Constant Voltage Mode (IL < ISET), and the load changed so that the load current (IL) became equal to the current limit setting (ISET), the power supply would automatically switch into Constant Current Mode and the output voltage would vary in response to changes in load current. If the additional load was subsequently removed so that the load current was again less than the current limit setting, the supply would automatically return to Constant Voltage Mode.

58	Operating Manual for XFR 2.8kW Series Power Supply

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Contents XFR 2800 Watt Series Programmable DC Power Supply Page XFR 2800 Watt Series How do you get service? What does this warranty cover and how long does it last?What will Xantrex do? Phone 604 422 Toll Free North America 800 667 Fax 604 421What does this warranty not cover? Disclaimer Product Information About Your Power Supply Model Number Serial Number Purchased From Purchase DatePower Supply Safety Who Should Use This Manual Main SectionsManual Revisions Power Supply Safety Markings About This ManualContents Section Local Operation Remote CalibrationList of Figures List of Figures List of Tables List of Tables Features and Options DescriptionModel Voltage Range Current Range Features and Specifications Power Supply Front Panel Front Panel ControlsRear Panel Connectors and Switch Power Supply Rear Panel Shows the functions assigned to each SW1 switch Switch Function Open Closed HIGH=OFF HIGH=ONProgramming and Monitoring J2 Connector Connector Reference Name Function VrmtWiring Making J2 ConnectionsSpecifications Models 300 12-220 20-130 33-85 40-70 Features and Specifications Models 60-46 100-28 150-18 300-9 600-4 Features and Specifications Additional Specifications Input ConditionsAdditional Features Remote Programming MonitoringEnvironmental Specifications Mechanical Specifications Output ConnectorDimensional Drawings Basic Setup Procedure IntroductionStep # Description Action Reference Inspection, Cleaning, and Packaging Initial Inspection Periodic CleaningReturning Power Supplies to the Manufacturer Packaging for Shipping or Storage Shipping or Storage Carton LabelLocation, Mounting, and Ventilation Rack MountingAC Input Power AC Input Connector Voltage SelectionAC Input AC Voltage Range FrequencyAC Input Wire Connection Wire Size Ratings Cable Outside DiameterAC Input Cover and Strain Relief Voltage Mode Operation Check Power-on CheckFunctional Tests Equipment RequiredCurrent Mode Operation Check Front Panel Function Checks Load Wiring Wire Size Maximum Current aLoad Connection Maximum Load Wire Length for 1 V Line Drop Making Load ConnectionsOutput Strain Relief and Cover Typical Load Connection Hardware Output Voltage Connector To 600 V ModelsSingle Load with Local Sensing Default Multiple Loads with Local Sensing 10Multiple Loads with Remote Sensing Sense Wiring Local and Remote Sensing11J10 Sense Connector Terminal Name FunctionUsing Remote Sensing 12 shows a sample setup for using remote sensing Standard Operation Operating Modes Automatic CrossoverLocal Operation Standard OperationConfiguration ShippedMode Setting Output Voltage Current Limit Using Over Voltage Protection OVP OVPResetting the OVP Circuit Using the Shutdown Function Controlling Shutdown Function via ConnectorLED Using Multiple Supplies Configuring Multiple Supplies for Series OperationConfiguring ParallelSupplies for Supplies for Split Supply Operation Parallel Operation of Multiple SuppliesPositive-negative Supply Split Supply Operation of Multiple SuppliesLocal Operation Over Temperature Protection OTP Switch SW1-8 OTP Shutdown Selection DescriptionUser Diagnostics Emergency ShutdownUnusual or Erratic Operation Abbreviated References Used in TableSymptom Check Further Checks and Corrections Remote Operation Remote Analog Programming Procedure OptionsRemote Operation Control Programming ScalesRemote Operation Power Supply Settings for Different Programming Sources Connecting Programming Sources to J2 Connector Remote Monitoring of Output Voltage and Current Calibration Setup ServicePrecautions EnvironmentAccessing Calibration Potentiometers Programming and Monitoring Calibration Locations Calibrating for Programming Accuracy Voltage Programming Circuit CalibrationCurrent Limit Programming Circuit Calibration Calibrating for Readback Accuracy Output Voltage Monitor Circuit CalibrationOutput Current Monitor Circuit Calibration Calibration Page Xantrex Technology Inc