HP 6623A, 6624A, 6621A manual Series Operation, Series Connections with Local Sensing CV Operation

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Series Operation

SHOCK HAZARD Floating voltages must not exceed 240 Vdc. No output terminal may be more than 240 Vdc from chassis ground.

Connect in series only outputs that have equivalent current ratings. Each output has a reverse voltage protection diode across its output terminals. The current conducted by this diode is not internally limited by the output. Therefore, never connect an output in such a way that this diode will conduct current in excess of the rated current of the output since damage could result.

Connecting outputs in series provides a greater voltage capability than can be obtained from a single output. Because the current is the same through each element in a series circuit, outputs connected in series must have equivalent current ratings. Otherwise, the higher rated output could potentially damage the lower rated output by forcing excessive current through it under certain load conditions.

Figure 4-13 shows an example of how to connect two outputs in series to a single load with local sensing. This configuration applies to both CV and CC operating modes. Connecting the + load lead of output 2 directly to the - V terminal of output 1 completes the series connection between the two outputs. Connecting the + S terminal of output 2 directly to the - S terminal of output 1 and removing the sense jumper (between + S and + V) on output 2 compensates for the IR drop in the load lead from output 2 to output 1.

Figure 4-13. Series Connections with Local Sensing

CV Operation

For CV operation, first program the current setting of each output to the desired current limit point. Then program the voltage of each output so that the sum of both voltages equals the total desired operating voltage. The simplest way to accomplish this is to program each output to one half of the total desired operating voltage. Both outputs will operate in CV mode.

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Contents HP Part No Operating ManualCertification Safety Summary Symbol Description Safety SummaryEMC Declaration of ConformityAppendix A--Calibration Procedure Installation ProceduresAppendix C--Command Summary Appendix D--Error MessagesTable Of Contents Local Operation Remote OperationError Messages Command SummaryCalibration Programming With The Series 200/300 ComputerPage General Information Safety ConsiderationsIntroduction Instrument and Manual IdentificationAccessories DescriptionOutput Combinations Available Model Basic Operation Output Low Range Values High Range ValuesHP-IB Board Output Boards Specifications Qualifying ConditionsDefinitions Output Response Characteristics Source Effect SpecificationsOutputs Low High Voltage Temperature Coefficient Supplemental CharacteristicsReadback Resolution Outputs Low High Voltage Programming ResolutionAC Input Power and Current Command Processing Time see FigureDimensions all models Safety Agency ComplianceOutput Impedance Low Voltage High Voltage 80 W Low VoltageGeneral Information General Information General Information General Information Installation Initial InspectionLocation and Cooling Line Fuse Input Power Requirements100/120 2110-0342 220/240 2110-0055 Line FusesLine Voltage Conversion Power CordHP-IB Interface Connector Page Front Panel Controls and Indicators Getting StartedTurning On Your Supply HP-IB Status Annunciators LCL keyAnnunciators Power Supply StatusAlphanumeric LCD System Control KeysOutput Control Keys Line Switch Numeric Entry KeysNormal Self Test Indications Sample Self-Test Failure Display Checking Out Your Supply Using Local ControlVoltage Test Overvoltage TestCurrent Test Iset Enter Introduction To Remote OperationOCP Enter/Output StatementsOutput Sending a Remote CommandReading the HP-IB Address AddrOften Used Commands Getting Data From The SupplyDisp a Disp a Returning the Supply to Local Mode Output Ranges Output Connections and Operating InformationProtection Features Operating QuadrantsRange Selection Typical Output Range Characteristics Connecting the Load Page Wire Bundled 10 a 20 a FeetCross Section Meters Area in mm2 Remote Voltage Sensing Multiple LoadsPositive and Negative Voltages Remote Sense Connections Remote Voltage SensingOutput Noise Considerations Output Type FormulaProgramming Response Time with an Output Capacitor Open Sense LeadsExternal Trigger Circuit Overvoltage Trigger ConnectionsEquivalent Internal OV Trigger Circuit Power Supply Protection Considerations Battery ChargingParallel Operation CV Operation Maximum Allowable Voltage SettingRemote Sensing CC Operation13. Series Connections with Local Sensing CV Operation Series Operation14. Series Connections with Remote Sensing Specifications for Series OperationPage Page Remote Operation HP-IB OperationInterface Function HP-IB Address Selection Power-On Service Request PON Programming SyntaxNumeric Data Sheet 1 of 2. Syntax Forms for Power Supply Commands Sheet 2 of 2. Syntax Forms for Power Supply Commands Vset Fault ?Iset OvsetPage Initial Conditions Power Supply CommandsCurrent Programming Voltage ProgrammingRange Switching Output On/Off Overvoltage OV ProtectionOVSET? Multiple Output Storage & Recall Overcurrent Protection OCPStatus Reporting Clear CommandASTS? UNR +CCUNMASK? FAULT?Unmask 2,XXX Bit Assignment of the Serial Poll RegisterService Request Generation PON ? SRQ?Reprogramming Delay RQS BitDisplay On/Off Other Queries Front Panel ExplanationResponse Code Code Explanation TEST? ResponsesPage Local Operation Local ModeLocal Control Of Output Functions GeneralSetting Current Setting VoltageResetting Overvoltage Protection Setting Overvoltage ProtectionResetting Overcurrent Protection Displaying the Contents of the Fault RegisterSetting the Supplys HP-IB Address Setting the Reprogramming DelayLocal Control Of System Functions ConditionAddr Enter Displaying Error MessagesSTO Enter RCL EnterPage Test Equipment and Setup Required Calibration ProceduresFigure A-1. Calibration Setup General Calibration Procedure Are not stored. Exercise care when moving the leads 10 ! Calibration Example Calibration ProgramClear Voltmeter Output Buffer PauseInput ANY More Outputs to CALIBRATE? Y or N,X$ Disp END of Calibration ProgramFnend Page Page Programming With a Series 200/300 Computer Path NamesVoltage and Current Programming Voltage and Current Readback Voltage and Current Programming With VariablesPrint OUTPUT1 is in CV Mode END if Programming Power Supply RegistersService Request and Serial Poll Present StatusOFF Intr Enable IntrPrint Overvoltage on Output #1 Print Overvoltage on Output #2Error Detection Stored Operating States Programming Outputs Connected In ParallelInput Enter Operating VOLTAGE,V1 Input Enter Voltage LIMIT,VInput Enter the Desired Current Limit POINT,I Programming Outputs Connected In SeriesCommand Summary Table C-1. Command SummaryCommand Description Table C-l. Command Summary ROM? PON?Previously Power-On Self Test Messages Error Responses Error Codes and MessagesTable D-l. Power-On Self Test Error Message Test ResponsesError Code Message Explanation ERR? query ERR key Table D-2. Error ResponsesResponse Code Explanation TEST? query Table D-3. TEST? ResponsesPage Make Changes Manual BackdatingII. CE92 Product Specific Annotations Generally Applicable Annotations6621A 6623AEurope Or contactFar East Latin America

6624A, 6621A, 6623A specifications

The HP 6623A, 6621A, and 6624A are precision DC power supplies widely recognized for their reliability and performance in various laboratory and industrial applications. These models are part of HP's 662X series, designed to cater to the needs of engineers, researchers, and technicians who require accurate power sources for their testing and development activities.

The main features of the HP 6623A, 6621A, and 6624A include their high stability, low ripple, and excellent load regulation, ensuring that the output voltage and current remain stable during testing. The power supplies provide multiple output channels, allowing users to power multiple devices simultaneously. The flexibility in setting voltage and current levels makes these models ideal for a wide range of applications, including semiconductor testing, device characterization, and system integration.

One of the standout technologies in the HP 662X series is the use of smart design techniques that minimize noise and enhance output performance. These power supplies incorporate advanced feedback mechanisms to maintain steady output, even under varying load conditions. Additionally, they feature programmable outputs, which means users can adjust the output levels through a connected computer or control system, streamlining the testing process and improving efficiency.

The HP 6623A model offers three independent outputs, with total power capabilities of 40 watts. It includes a 0-20V output, which can deliver up to 2A of current, along with two additional outputs that are adjustable. The 6621A provides a single output option, delivering a maximum of 20V and 2A, making it well-suited for simple applications where a single power source is required. In contrast, the HP 6624A stands out with its four independent output channels, providing a total of 60 watts, making it the most versatile of the three models.

Characteristics of these power supplies include user-friendly interfaces, allowing for easy configuration and monitoring of settings. LED indicators provide real-time feedback on voltage and current levels, enabling users to quickly assess the performance of their tests. Moreover, built-in protection features safeguard both the power supply and the connected devices from overvoltage and overcurrent conditions.

Overall, the HP 6623A, 6621A, and 6624A power supplies embody advanced engineering and design, making them invaluable tools for professionals looking for high-quality, reliable power sources for their electronic testing needs.
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