Agilent Technologies 5951-2826 Control Connector, Overpower, Overtemperature, Reverse Voltage

Page 32

If the software overcurrent limit is exceeded and persists beyond the specified delay time, the input is turned off. Also, for these conditions, the OC and PS (protection shutdown) status register bits are set and will remain set until the OC condition is removed and the bits are reset as previously described.

Overpower

Nominal Power Limit. The nominal power-limit boundary is set by software that monitors the input current and voltage. If the input power exceeds the nominal power limit, the load sets the overpower status bit, which will reset if the overpower condition ceases. If the overpower condition persists for 50 ms, the input turns off, and the OP and PS status bits are both latched on. The input remains off, and the OP and PS status bits remain set, until protection clear occurs. Of course, if the overpower condition is not corrected, the input will turn off again.

Overtemperature

The Electronic Load has an overtemperature (OT) protection circuit that turns off the input if the internal temperature exceeds safe limits. If the OT circuit activates, the OT and PS status register bits are set and will remain set until they are reset. If the OT condition still exists when the reset is executed, the input will remain off. You must wait until the load cools down before you can reset the OT circuit. The fan will continue to operate to cool the unit as quickly as possible.

Reverse Voltage

This feature protects the Electronic Load in case the input dc voltage lines are connected with the wrong polarity. If a reverse voltage (RV) condition is detected, turn off power to the dc source and the load and make the correct connections.

The Electronic Load conducts reverse current when the polarity of the DC source connection is incorrect. The maximum safe reverse current is specified in Table 1-1. The reverse voltage (RV) and voltage fault (VF) bits in the status register are set when reverse voltage is applied. When the reverse voltage is removed the RV bit is cleared. However, the VF bit remains set until it is reset. As previously described, the Fault output signal at the control connector tracks the state of the VF bit. The Fault signal can be used to control an external relay in order to disconnect the load from the dc source if an RV condition occurs.

Control Connector

The Electronic Load has a 10-pin connector mounted on its rear panel. The connector signals are described in the following paragraphs. See Chapter 3 for connection details.

Remote Sensing

The remote sensing inputs, + S and - S, can be used in CV or CR modes. By eliminating the effect of the inevitable voltage drop in the load leads, remote sensing provides greater accuracy by allowing the load to regulate directly at the source’s output terminals, as well as measure the voltage there.

32 Operation Overview

Page 31 Page 33
Image 32
Page 31 Page 33
Contents Agilent Part No Microfiche Part No Updated April Operating ManualCertification Safety Summary Safety Summary Symbol DescriptionHerstellerbescheinigung Manufacturer’s DeclarationPrinting History Table of Contents Calibration Local OperationRemote Operation Considerations for Operating in Constant Resistance Mode What’s In This Manual Reader PathOptions General InformationSafety Requirements SpecificationsRegulation Constant Resistance Mode Ranges Modes Continuous ModePulsed Mode 6060B 6063BCurrent Readback Temperature Coefficient Supplemental Characteristics 6060B 6063BResolution Maximum Readback Capability BandwidthSupplemental Characteristics Maximum VA Peak Inrush Current 2.5 a typicalCurrent Slew Rate Rate # High Range Step Low Range Step Transition TimeModel 6063B Range Transient Current Level Resistance Slew RateOvershoot 6060B 6063B 10% With unit onWith unit off WidthPage Introduction Front Panel DescriptionRemote Programming Operation OverviewLocal/Remote Control Programmable FeaturesConstant Current CC Mode Modes of OperationTriggered Current Level Software Current LimitImmediate Resistance Level Constant Resistance CR ModeSlew Rate Transient Resistance Level Constant Voltage CV ModeTriggered Resistance Level Immediate Voltage Level Triggered Voltage LevelTransient Voltage Level Transient OperationHpsl Command Description Pulsed Transient OperationSelects the external trigger input Selects pulsed transient operationSets pulse width to 1 millisecond Selects the external trigger input sourceTriggering a preset level Triggering a transient pulseToggling Slew Rate And Minimum Transition TimeInput Current, Voltage, and Power Measurement Risetime Transition LimitationShort On/Off Transition Times and Slew RatesSaving and Recalling Settings Reading Remote Programming ErrorsInput On/Off Status ReportingProtection Features Resetting Latched ProtectionOvervoltage OvercurrentControl Connector OverpowerOvertemperature Reverse VoltageExternal Programming Input FaultMonitor Outputs Port On/Off Inspection Check Line Voltage Location and CoolingTurn-On Checkout Voltage Select Switches Line Voltage Fuse Agilent Part NoConnect The Power Cord Gpib Errors Input Errors Display DescriptionError Turn-On/SelftestController Connection Power TestGpib Connector Rear Panel Connectors and Switches Wire Size Strip backGpib Address AWGInput Binding Post Control Connector Pins 3 +S and -SIM and VM CommonTrigger Connector Sense SwitchApplication Connections Zero-Volt Loading Connections Maximum Wire Lengths to Limit Voltage DropsParallel Connections 11. Local Sensing 13. Parallel Operation Page Front Panel Controls and Indicators Description Local OperationControls and Indicators Description Function Keys Local Control Overview Turning the Input On/Off Using The Function Keys∙ Short on Recommended Programming Sequence Setting the Mode of Operation Setting CC ValuesCC Programming Ranges Function Key DisplayExamples Setting CR Values Examples Setting CV Values Continuous Pulse Train Programming Ranges Function Key Display Range of ValuesUsing The System Keys Shorting The InputSetting The Electronic Load’s Gpib Address Displaying Error CodesFactory Default Settings Function 6060B 6063B Changing Wake-up SettingsRecalling the Factory Default Values Enter/Output Statements Gpib AddressOutput EnterSending a Remote Command Remote Programming CommandsGetting Data Back Output 705 MEASCURR?Modes RangesTransient levels Slew RatesRemote Programming Flowchart Sheet Remote Programming Flowchart Sheet CR Mode Example CC Mode ExampleCV Mode Example Continuous Transient Operation Example Pulsed Transient Operation ExampleHpsl Command Short Form Output 705TRAN on Output 705INPUT onRemote Programming Ranges Function Constant Current CCConstant Resistance CR 6060BConstant Voltage CV Transient OperationPage Equipment Characteristics Recommended Model Example ProgramsEquipment Required Equipment Required for CalibrationCalibration Commands Calibration Flowcharts Example ProgramSupply Shunt Values Settings Calibration Information 6060B 6063BCalibration Flowchart Calibration Flowchart Calibration Flowchart Program Listing PauseWait END ifPause Subend Print Voltage CalibrationElse Explanation LinePage Considerations For Operating In Constant Resistance Mode Considerations For Operating In Constant Resistance ModeConsiderations For Operating In Constant Resistance Mode Index IndexIndex 24, 25, 26 Index Agilent Sales and Support Offices Agilent Sales and Support OfficeManual Updates
Top Page Image Contents