Manuals / Xantrex Technology / Computer Equipment / Power Supply

Xantrex Technology XPD 60-9, XPD 7.5-67, XPD 120-4.5, XPD 33-16 Using Over Voltage Protection OVP

Models: XPD 18-30 XPD 33-16 XPD 120-4.5 XPD 7.5-67 XPD 60-9

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Section 3. Local Operation

Using Over Voltage Protection (OVP)

Using Over Voltage Protection (OVP)

Defining the OVP Setpoint

OVP Circuit Check

The OVP circuit protects the load in the event of a remote programming error, an incorrect voltage control adjustment, or a power supply failure. The protection circuit monitors the output voltage at the output of the power supply and will shut down the main power converter whenever a preset voltage limit is exceeded. Set the preset voltage limit (also called the setpoint or trip level) using the screwdriver-adjustable front panel OVP ADJ potentiometer, or via one of the optional GPIB or RS-232 programming interfaces.

1.Turn the power supply OFF.

2.Using a small, flat-blade screwdriver, turn the OVP ADJ potentiometer screw to a fully clockwise position.

3.Turn the power supply ON. Set the output to the desired trip voltage.

4.Slowly turn the OVP ADJ potentiometer screw counter-clockwise until the red OVP indicator lamp lights.

5.Push the power switch to OFF.

6.Turn the voltage control knob to minimum.

7.Push the power switch ON and increase the voltage to check that the power supply shuts off the output at the set voltage.

8.Reset the OVP circuit after activation by removing the overvoltage condition and turning the unit OFF and back ON, or, by momentarily activating the TTL remote shutdown circuit. See “Using the Shutdown Function” on page 39, for information about shutdown circuit operation.

1.Turn power supply ON.

2.Adjust voltage to maximum. Adjust the front panel OVP ADJUST potentiometer counter-clockwise.

3.The OVP LED will light up and the output of the power supply will drop to near zero.

4.Rotate the front panel OVP ADJUST potentiometer fully clockwise.

5.Momentarily apply 5-15 V across J210 pins 1-2 (P1 -ve, P2 +ve) or cycle the AC input power.

6.The power supply output will recover, indicating that the OVP circuit was reset by momentarily activating the TTL S/D logic or cycling the AC power.

38	Operating Manual for XPD Series Power Supply

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Xantrex Technology XPD 60-9, XPD 7.5-67, XPD 120-4.5, XPD 33-16, XPD 18-30 manual Using Over Voltage Protection OVP

Contents

XPD XPD XPD XPD XPD XPD 500 Watt Series Programmable DC Power SupplyOperating Manual Page Programmable DC Power Supply XPD SeriesOperating 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 ManualOperating Manual for XPD Series Power Supply Power Supply Safety MarkingsAbout This Manual Section Features and Specifications ContentsSection 2. Installation Section Local Operation Section Remote Operation Features and Options Section 1. Features and SpecificationsDescription Front Panel Controls “Mechanical Specifications” on page “Functional Tests” on page“Standard Operation” on page 35l Rear Panel Connectors Section 1. Features and SpecificationsFigure 1.2 500 Watt Power Supply Rear Panel 7.5 V and 18 500 Watt Power Supply Rear Panel 33 V to 120Output The J210 connector provides access to the following functions Section 1. Features and Specifications 1. The TTL shutdown circuit is isolated to 500 V from the power supply output and chassisReference NameWiring Making J210 ConnectionsSection 1. Features and Specifications 120 V, 4.5 A power supplyElectrical Specifications Section 1. Features and SpecificationsModels 7.5-67Additional Specifications Input ConditionsSection 1. Features and Specifications Additional SpecificationsRemote Programming and Monitoring Additional CharacteristicsSection 1. Features and Specifications Environmental Specifications Mechanical SpecificationsSection 1. Features and Specifications Environmental SpecificationsSection 1. Features and Specifications MountingSection 2. Installation Basic Setup Procedure“Inspection, Cleaning, and “AC Input Power Connection”Inspection, Cleaning, and Packaging “Returning Power Supplies to the Manufacturer” on pageCleaning InitialReturning 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 Mounting7.5 V and 18 V, p AC Input Power ConnectionAC Input Cord Functional Tests Power-on Check Voltage Mode Operation Check Current Mode OperationCheck Load Connection Making Load Connections Section 2. InstallationInductive LoadsMultiple rated supply outputRemote Sensing Sense Wiring Section 3. Local Operation Standard OperationOperating Modes and Automatic Crossover IntroductionSetting the ConstantOperation Current LimitShipped Configuration Local Control Mode Setting the Supply to Operate in CI Mode Automatic Mode CrossoverSee “Using Over Voltage Protection OVP” on page 38 , for theUsing Over Voltage Protection OVP Controlling Shutdown Function via J210 Connector Using the Shutdown FunctionMaster-Slave Tracking Using Multiple Supplies Using Multiple SuppliesSection 3. Local Operation Configuring Multiple Supplies for Series Operation Voltage Mode Only Series OperationConfiguring Multiple Supplies for Parallel Operation Figure 3.3 Parallel OperationConfiguring Multiple Supplies for Split Supply Operation Load LinesPositive-negative supply To obtain a positive-negative supply, connect the negative output terminal of one supply to the positive terminal of the second supply. The positive output terminal of the first supply now provides a positive voltage relative to the common connection. The negative output terminal of the second supply provides the negative voltage. The current limits can be set independently of each other. The maximum current available in split operation is equal to the rated output of the supplies Trouble Shooting for Operators User DiagnosticsEmergency Shutdown Unusual or Erratic Operation source. See “AC Input Power See “Using Over VoltageSee “Using the Shutdown Connection” on pageOperation” on page See “Load Connection” on page30, and “Remote Sensing” on pageOperating Manual for XPD Series Power Supply User DiagnosticsSection 3. Local Operation Section 4. Remote Operation Remote Analog Programming of Output Voltage and Current LimitRemote DigitalReadback and Status Indicators OptionsProgramming Output Voltage with a 0-10 Vdc Voltage Source Programming Output Current with a0-10 Vdc Voltage SourceStatus Flags Section 4. Remote Operation Operating Manual for XPD Series Power SupplyStatus Flags 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