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Xantrex Technology XFR 2800 manual Local Operation, 1 Operating Modes

Models: XFR 2800

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Local Operation

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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Xantrex Technology XFR 2800 manual Local Operation, 1 Operating Modes

Contents

XFR 2800 Watt Series Programmable DC Power Supply XFR XFR XFR XFR XFR XFR XFR XFR XFR XFROperating Manual Page XFR 2800 Watt Series Programmable DC Power SupplyOperating Manual for How do you get service? Limited WarrantyProof of purchase may be in any one of the following forms Disclaimer Product Information About Your Power Supply WARNING Limitations on UsePower Supply Safety CautionsWho Should Use This Manual Main SectionsManual Revisions About This ManualPower Supply Safety Markings About This ManualContents Section Features and SpecificationsSection Local Operation Section Remote Operation Section 5. CalibrationList of Figures Operating Manual for XFR 2.8kW Series Power Supply List of FiguresList of Tables Operating Manual for XFR 2.8kW Series Power Supply List of TablesSection 1. Features and Specifications Features and OptionsDescription External monitor signals for output voltage and current Front Panel Controls “Mechanical Specifications” on page “Functional Tests” on pageSection 3. Local Operation Rear Panel Connectors and Switch Rear Panel Connectors and SwitchFigure 1.2 Power Supply Rear Panel Low voltage 7.5 V to 100 V model shownswitch enables you to choose Resetting the Switches Before making any changes to the switch settings, disable the power supply output by pushing the front panel STANDBY switch to its IN position. This temporarily shuts down the power supply. The front panel S/D LED turns on. Then, use any small, flat-bladed screwdriver to change the switch settings provides access to the following functions Features and Specifications ConnectorReference NameWiring Making J2 ConnectionsSpecifications Specifications are subject to change without noticeNominal line voltage is 208 Vac, 60 Hz Features and Specifications Models7.5-300 12-220Features and Specifications SpecificationsFeatures and Specifications Models60-46 100-28Features and Specifications SpecificationsInput Conditions Additional SpecificationsBased on 100 V, 28 A model Additional Features Remote Programming and MonitoringEnvironmental Specifications Mechanical Specifications Figure 1.6 Dimensional Drawings Dimensions given are nominalOperating Manual for XFR 2.8kW Series Power Supply 3.45 87.63 mmSection 2. Installation Basic Setup ProcedureIntroduction Inspection, Cleaning, and Packaging Initial Inspection Periodic CleaningReturning Power Supplies to the Manufacturer If you are returning a product from outside of the USA or CanadaPackaging for Shipping or Storage Location, Mounting, and Ventilation Rack MountingAC Input Power AC Input Connector and Voltage SelectionAC Input AC Input Wire Connection Table 2.3 AC Wire Specification3 x 12 AWG stranded copper 60 C minimum, 300AC Input Cover and Strain Relief Voltage Mode Operation Check Functional TestsCurrent Mode Operation Check Front Panel Function Checks Load Wiring Load ConnectionMaking Load Connections Figure 2.3 Maximum Load Wire Length for 1 V Line DropTo detach the 2-part cover 1. Strip the ends of the wires Figure 2.6 Output Voltage Connector 150 V to 600 V Modelssense connector as identified on Figure 1.2, on page Loads the radial power distribution method Installation Operating Manual for XFR 2.8kW Series Power SupplyFigure 2.10Multiple Loads with Remote Sensing Sense Wiring Local and Remote SensingInstallation TerminalName FunctionUsing Remote Sensing 5. Turn the power supply ON Section 3. Local Operation Standard OperationOperating Modes and Automatic Crossover IntroductionLocal Operation Figure 3.1 Operating Modesfront and rear panel diagrams Setting Output Voltage and Current Limit Using Over Voltage Protection OVP Front Panel OVP OperationTo reset the OVP circuit after it activates Using the Shutdown Function Controlling the Shutdown Function via the J2 Connector1. If switch SW1-7 is ON but there is no signal applied, the S/D LED turns on and the power supply will not provide an output until the HIGH signal level is applied Using Multiple Supplies Configuring Multiple Supplies for Series OperationConfiguring MultipleParallel OperationSupplies for Split Supply Operation Positive-negative Supply Figure 3.4 Split Supply Operation of Multiple SuppliesLocal sense lines shown are default J10 connections Positive-negative SupplyFigure 3.5 Split Supply Operation of Multiple Supplies Over Temperature Protection OTP Over Temperature Protection OTPUser Diagnostics Emergency ShutdownUnusual or Erratic Operation Symptom Local OperationCheck Further Checks and CorrectionsSection 4. Remote Operation IntroductionProcedure Remote Analog Programming of Output Voltage and Current LimitRemote Programming4. Connect the programming sources to the mating J2 connector as shown in Figure 4.1, observing the correct polarity for voltage sources. Ensure that the mating connector is plugged securely into the rear panel connector Remote Operation Figure 4.1 Connecting Programming Sources to J2 Connector Remote OperationRemote Monitoring of Output Voltage and Current Calibration Setup ServicePrecautions Section 5. CalibrationCalibration Setup Accessing Calibration PotentiometersCalibration Tool Required Phillips #2 screwdriver 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 Operating Manual for XFR 2.8kW Series Power Supply CalibrationCalibrating for Readback Accuracy Page Xantrex Technology Inc 8999 Nelson Way Burnaby, British Columbia Canada V5A 4B5604 422 8595 Tel 604 421 3056 Fax 800 667 8422 Toll Free North America prg.info@xantrex.com