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Xantrex XFR Series Technical Manual
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Xantrex XFR Series Technical Manual

Xantrex XFR Series Technical Manual

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Technical
Manual
XANTREX
ThePower T oRely On
Technical
Manual
for
Internal
GPIB
Interface
for XFR Series
and
XHR Series Power Supplies
TM-GPRF-OIXN

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Summary of Contents for Xantrex XFR Series

  • Page 1 Technical Manual XANTREX ThePower T oRely On Technical Manual Internal GPIB Interface for XFR Series XHR Series Power Supplies TM-GPRF-OIXN...
  • Page 2 GP!B INTERFACE ABOUT THIS MANUAL ABOUT THIS MANUAL Thistechnical manual i s for theInternal G PIBinterface, a microprocessor-controlled optioncardfor XFR Series a ndXHR Series DC outputpowersupplies. This manual p rovides y ouwith descriptions and specification user o ptions, andconfiguration instructions, in addition t oacommand set w hich enables you to manage thepower supply f romanexternal source.
  • Page 3 GPIB INTERFACE CONTENTS CONTENTS About this Manual Manual Changes ...11 Contents....lii List of Illustrations.. List of Tables . 1. DESCRIPTION 1.1 Introduction to the GPIB Interface ... 1-1 1.2 Features and Functions 1.2. I Features 1.2.2 Programmable Functions ..1.2.3 Readback Functions 2.
  • Page 4 GPIB INTERFACE MANUAL CHANGES MANUAL CHANGES There are no correcuons or additions at this time. Release 1.0 (98/01)
  • Page 5 GPIB INTERFACE CONTENTS 3.4 Command Summary 3.5 Command Reference.... 3-14 3.6 Accumulated Status, Status,and Fault Registers . 3-15 3.7 Error Codes . 4. CALIBRATION 4.1 Introduction..4.2 Voltage Mode Calibration..4.2. I Voltage Calibration Setup . 4-2 4.2.2 Voltage Program Calibration Procedure 4.2.3 Voltage Readback Calibration Procedure 4.3 Current...
  • Page 6 GPIB INTERFACE CONTENTS LIST OF ILLUSTRATIONS Figurel. I-I Sample Configuration u singGPI.B Interface..1-1 Figure2.2-1PowerSupplyFrontPanelWithGPIB InterfaceInstalled..2-2 Figure2.2-2GPLB InterfaceSubplate......2-2 Figure 2.2-3 GPIB Interface PCB ...2-3 Figure 2.8-1 User SignalsJ7 Connector.. Figure2.8-2J7UserSignal C ircuitBlockDiagram....2-9 Figure 2.8-3 J7 User CabieWith Fenite Block..2-10 Figure4.2-1Voltage Calibration Setup Figure4.3-1Current C alibration Setup...
  • Page 7 GPIB INTERFACE DESCRIPTION DESCRIPTION Introduction to the GPIB Interface The internal GPIB interface card allows vou to operate your power supply from a computer controller via the IEEE-488 communicationsbus. SeeFigure 1.1-1 The GPIB interface allows complete remote programming of your power supply. including status reporting, settings query, and Interrupt generation with user-designatedfault conditions.
  • Page 8 GPIB INTERFACE DESCRIPTION Features Functions 1.2.1 Features 16-bit programming and readback of voltage and current Programmable soft limits for voltage and current • Programmable over voltage protection with reset Easy-to-use, self-documenting comnmandset Isolateduser-programmablesignals suchas fault, polarity, isolation. and auxiliary signals •...
  • Page 9 GPIB INTERFACE INSTALLATION AND CONFIGURATION INSTALLATION AND CONFIGURATION Introduction To usethis product, you must have the following equipment: • a compatible model of DC output power supply • IEEE-488 connector and cable • computer with an IEEE-488 interface Computer-based commumcauons s oftwarepackage Weusuallyinstall theGPIB interfacein a powersupplyat the factory.Your local distributor or semcecenter can also install the interface,especiallyfor usein a previously-purchased supply alreadyon site.
  • Page 10 GPIB INTERFACE INSTALLATION AND CONFIGURATION Remote LED (REM) /Local Switch(LOCAL) Remote Programming LäDs: Fault LED (FLT) Address LED (ADR) Indicates that a fault has occurred. The fault bit must be Indicates that the master controller IS addressing unmasked. Refer to the status register in Table 3.6-1 unit.
  • Page 11 INSTALLATION CONFIGURATION INTERFACE CAUTION Use proper static control techniques to avoid damage to static-sensitive components on the printed circuit board CRIO u! 17 JUMPER SELECTION [closed] [defauEt].See Section 2.8.1. Local OVP control selection [open]Front PanelOVP Control. [1-21user TTL SID fine activelow See Section2.9.2. user TTL shutdown (SID) selection [2-31[default] user TTL SID line activehigh.
  • Page 12 GPIB INTERFACE INSTALLATION AND CONFIGURATION Basic Setup Procedure This p rocedu can be used as aquick r eference forthose familiar with the configuration requirements forthe GPIB interface asinstalled intheDCpower supply. For t hose w ho want m ore i nformation, each s tep refers t o detaile procedure...
  • Page 13 INSTALLATION AND CONFIGURATION GPIB INTERFACE IEEE-488 Primary Address Selection Assignaprimarvaddress t o eachpowersupplv:Choose a number b etween 0 and30 whichis unique to yourIEEE-488 bus, t hatis, differentfromotherdevice addresses onthesame bus. Locate switch Sl on the GPIB Interface rear panel. See Figure 2.2-2 for the interface subplate drawing.
  • Page 14 GPIB INTERFACE INSTALLATION AND CONFIGURATION Remote/Local Operation 2.6.1 Remote/Local Mode Startup Selection You can start the power supplv either in local mode or in remote mode by selecting the position of the rear panelpowerON remote (PONREM) smtch. Table 2.6-1summanzes t he switch settingsin relationto the Sl switch markings on the rear panel subplate.
  • Page 15 INSTALLATION CONFIGURATION INTERFACE 2.6.3 Local Mode Operation If the rear panel PON REM switch is set to local startup, the power supply will power ON in local mode. Power supply control is at the front panel. From local mode, you can go to remote mode by addressing the devrce using any software command.
  • Page 16 GPIB INTERFACE INSTALLATION AND CONFIGURATION Internal PCB Jumper Selections CAUTION If you remove the unitis cover, use proper static control techniques to avoid damage to static-sensitive components on the printed circuit board. You can select how you use OVP (over voltage protection) control and TIL shutdown by changmgjumper positions on the GPIB PCB Refer to the operating manual for information on how to use over voltage protection and TTL shutdown.
  • Page 17 INSTALLATION AND CONFIGURATION GPIB]NTERFACE user Signals 2.9.1 Connector J7 User Signals Auxiliary connector .J7, l ocatedon the GPIB interface rearpanel,providesseveral s ignalsto increase y our operatmg c ontrol o fthesupply. T hese signals aredependent ontheoperator's design anduses. Theoperation of theJ7signal r equires that youprovideexternal v cc andground. U sea standard 8-position telephone jack and data cableto connectto J7.
  • Page 18 GPfB INTERFACE INSTALLATION AND CONFIGURATION 2.9.2 J7 Cable Connection Use astandard 8 -position telephone jackanddatacable toconnect toJ7 Addaferrite block toreduce r adiated emission. Theoneinchsquare f errite blockwith built-inhousing c lipISpaclcaged andshipped w iththepower supply interface card. To install the femte block: 1.
  • Page 19 OPERATION INTERFACE OPERATION Introduction This sectioncoversGPIB interface programming. s tartingwith IEEE-488functions,continuingwith an extensive s etof device-dependent commands, and,finally, providingerrorcodes, a ndstatus andfault register information, GPIB Operation A GPIBinterface controllercardenables youto controlan IEEE-488bussystem ua computer. i dentifymg which of its interconnecteddevicesare to send and receive data. Interconnecteddevices could include programmabl AC or DC power s upplies.
  • Page 20 OPERATION GPIB INTERFACE 3.2.2 Device Clear The power supply will implement Device Clear regardlessof whether it is in local or remote control. Deuce Clear is typically used to send all or selected devices to a known state with a single command. The power supply will be set to Initial (Power On) Conditions after Device Clear.
  • Page 21 OPERATION GPIB INTERFACE 3.2.6 Service Request Service request i s a uniline message asserted by the powersupplyat poweron andfor fault conditions. Ten(10)power s upplycondiüons aredefinedasfaults:CV,CC,OV,OTP,SD,FOLD,ERR,ACF,OPF,and SNSP. See Section3.6 Accumulated Status. Status, and Fault Registers for more information. Power ON (PON) c analso beflagged in thefaultregister i f thesupplyts r earpanel p ower o nservice r equest (PON SRQ) siütch is set to ON See Section 2.5 Power On Service Request (PON SRQ).
  • Page 22 OPERATION GPIB INTERFACE Command Syntax 3.3.1 Manual Conventions The manual usestheseconventionswhen displavmg command information. These charactersare not part of the command but are used to denote parameters used with the command. < > (angle brackets) Angle brackets enclose a parameter. Do not include the angle brackets in the command line you send to the computer.
  • Page 23 OPERATION GPIB INTERFACE 3.3.2 Command Format and Parameters (continued) Table 3.3-1 Command Parameters Form Description Parameter The current in amps or milliamps. If no unit is given, the <current>, default unit is amps. <float>mA The time in seconds or milliseconds, If no unit is given, the default unit is seconds.
  • Page 24 OPERATION GPIB INTERFACE 3.3.3 Command Strings If you send more than one command line, separatethe commandswith a semicolon. The semicolon may be precededor followed by spaces. Example: ISET 2.0A; VSET 5V ISET 2.0A , VSET 5V 3.3.4 Command Terminators Terminators indicate the end of a command string and tell the power supply to execute the command. The termination character is LF (Line Feed).
  • Page 25 OPERATION GPIB INTERFACE Table 3.4-2 Query Commands Command Description AUXA? Asks for the state of the set value for the AUXA command Asks for the state of the set value for the AUXB command AUXB? Asks for the power supply's calibration mode status. CMODE? Asks for the programmable time delay setting before the suppiy reports fauft...
  • Page 26 OPERATION GPIB INTERFACE Command Reference Table 3.5-1 Command Reference Command Description ASTS? Asks for the supply's accumulated status register. The accumulated status register stores any bit that was entered in the status register since the accumulated status query command (ASTS?) was last used, regardless of whether the condition still extsts.
  • Page 27 OPERATION GPIB INTERFACE Table 3.5-1 Command Reference (continued) Description Command Asks for the most recent remote programming error. When the power supply ERR? detects a programming error, it lights the ERR LED and sets the ERR bit in the accumulated status and fault registers.
  • Page 28 INTERFACE OPERATION Table 3.5-1 Command Reference (continued) Command Description In responseto this command,the powersuppiy sends a programmedcurrent value to the output terminal. This value is at the high end of the power supply's current range and is read by an externaldevice connectedas part of the calibration procedure.
  • Page 29 GPIB INTERFACE OPERATION T abie 3.5-1 Command Reference (continued) Description Command Enabies or disables the suppiys voltage/current output, The suppiy will continue to accept new commands while the output is disabled but these wit; not be implemented until OUT ON or OUT 1 is received. OUT ON is the default setting When you start the supply in remote mode, the output is enabled, OUT OFF (or OUT O)also sets the isolation signal on the rear panel J7 connector, line 3.
  • Page 30 GPIB INTERFACE OPERATION Table 3.5-1 Command Reference (continued) Description Command Asks forthesupply's present status register. Status conditions arestored inthe STS? status r egister. Each bitrepresents aseparate condition. When thecondition is true, t hecorresponding bitis 1(true). B itsremain setinthestatus register as long asthecondition istrue.
  • Page 31 GPIB INTERFACE INSTALLATION CONFIGURATION 2.6.3 Local Mode Operation In local mode operation, you set the voltage and current output levels and the OVP trip level with controls located on the front panel. Reter to the operating manual for a description of the functions available at the front panel.
  • Page 32 INTERFACE INSTALLATION AND CONFIGURATION Remote/Local Operation 2.6.1 Remote/LocaI Mode Startup Start t hepower supply e ither i n local m ode orinremote m ode b ysetting t hepower O Nremote ( PON REM) switch which is locatedon the unit's rear panel. SeeTable 2.6-1 for the switch settings. Table 2.6-1 Remote/Local Startup Settings Power...
  • Page 33 INTERFACE OPERATION Table 3.5-1 Command Reference (continued) Command Description VMAX? Asks for the supply's soft voltage limit setting. Response VMAX <voltage> VOUT? Measures the supply s actual voltage output using the buiit-in voltage readback circuitry. Response VOUT <voitage> VRDAT Caiculates and records the slope and offset for readback voltage using VRLO and VRHI data.
  • Page 34 1 IVIN GplB INTERFACE 3.6 Accumulated Status,Status,andFaultRegisters The GPIB option card u ses three s eparate registers which a re always active. They a re the accumulated status, status and fault r egisters You can use t he status commands shown inTable 3.4-4 toactivate the registers.
  • Page 35 INTERFACE OPERATION Error Codes Ifthe ERRflag in theaccumulated s tatus or fault registers h asbeenactivated, an ERR? querywill returnan errornumber w hichcorresponds to an eventdescribed i n thefollowingtable.TheERR?query will alsoclear the ERR bit in the register. Table 3.7-1 Error Codes ERROR# ERROR IDENTIFICATION EXPLANATION...
  • Page 36 GPIB INTERFACE CALIBRATION CALIBRATION Introduction WARNING Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on ail:power supplies in normai operation. in addition, potentially lethai voltages exist in the power circuit and the output connector of power suppiies which are rated at 40V and over.
  • Page 37 CALIBRATION GPIB INTERFACE 4.2.2 Voltage Program Calibration Procedure Setthe power supplyfor calibration as in Section 4.2.1 Voltage Calibration Setup. Activate calibration modeby sending command CMODE ON or CMODE I to the power supply. SendcommandSLO; ILO to the power supply. Measureand record the output shown on the external voltmeter.
  • Page 38 CALIBRATION GPIB INTERFACE Current Mode Calibration Current Calibration Setup 4.3.1 Disconnectthe load from the power supply to be calibrated. Connecta shunt acrossthe supply'soutput terminals. Connect a voltmeter across the shunt, POWER SUPPLY POVER SUPPLY NEGATIVE OUTPUT POSITIVE OUTPUT CURRENT SENSING RESISTOR VOLTMETER Figure 4.3-1 Current Calibration...
  • Page 39 CALIBRATION INTERFACE 4.3.3 Current Readback Calibration Procedure Connectthe currentshunt and voltmeter to the power supply as shownin Section4.3.1 Current Calibration Setup Activatecalibrationmodeby sendingcommand CMODE ON or CMODEI to thepowersupply. SendcommandIRLO; VRLO to the powersupply,Wait for the supplyto settle.Measureand record the output voltage shown on the external voltmeter. SendIRLO again. Send commandIRHI, \JRHI to the supply.
  • Page 40 MAINTENANCE GPIB INTERFACE MAINTENANCE Introduction WARNING Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on all power supplies in normal operation. in addition, potentially lethai voltages exist in the power circuit and the output connector of power supplies which are rated at 40V and over.
  • Page 41 GPIB INTERFACE MAINTENANCE GPIB Interface Parts 5.3.3 Table 5.3-1 Replaceable Parts Part Description Designation CD-334A-C6 0.33gF 50V Metallized Polyprop, Axial Capacitor CC-334F-09 0.33gF 50V Z5U +80% TO -20% 5mm Ceramic Radial Caoacitor 77-79, 101 ,102, 106,108, 119, 122, 136, 143, 185, 186, 192, 197-202 CJ-I UOD-35 C15,23...
  • Page 42 INTERFACE MAINTENANCE 5.3.3 GPIB Interface Parts (continued) Table 5.3-1 laceable Parts continued Description Part Designation R2.3 R-2210-41 221Q 1% 1/4W Metal Film Resistor IOOQ Isolated SIP, 10 Pin, 2% RY-1000-02 Empty Location 6.34k 1/4W 10/0 Metaf Film Resistor R_6341-41 R20, 90,98.99, 153, loow 1% 1/4w 160,161...
  • Page 43 MAINTENANCE GPIB INTERFACE 5.3.3 GPIB Interface Parts (continued) Table 5.3-1 laceable Parts continued Designation Part Description U 149 LM2940CT 3T 5V Low Sat Reg T0220 UR-2940-CT For U149 Heatsink TO-220 Black 0.71"L x 0.5"H #4-40 x 1/4' Kep Nut Stainless Steei MN-440Z-08 #4-40 x 5/16"...
  • Page 44 APPENDIX GPiB INTERFACE SPECIFICATIONS The specificationsin this section are warranted at 25oc ±50C unlessotherwise specified.All specificauonsare subject to change without notice, XFR 1200 Watt Series Supplies with GPIB Interface Installed Table A-I Electrical Specifications for XFR 1200 Watt Series 7.5V Models 7.5-140 12-100...
  • Page 45 APPENDIX GPIB INTERFACE XFR 2800 Watt Series Supplies with GPIB Interface Installed Table A-3 Electrical Specifications for XFR 2800 Watt Series 7.5V to 60V Models Models 7.5-300 12-220 20-130 40-70 6046 Program Resoiution Voltage 1 16mV 1.8mV 3.08mV 6.2mV 9.2mv Current 42.0mA 18.2mA...
  • Page 46 GP!B INTERFACE APPENDIX XHR 600 Watt Series Supplies with GPIB Interface Installed Table A-5 Electrical Specifications for XHR 600 Watt Series 7.5V to 60V Models Models 7.5-80 20-30 33-18 40_15 60-10 Program Resolution Voltage 1.16mV 3 08mV 5.07mV 6.2mV 9.2mV Current 19.6mA 8.4 mA...
  • Page 47 APPENDIX GPIB INTERFACE A.4 XHR1000WattSeries Supplieswith GPIB InterfaceInstalled Table A-7 Electrical Specifications for XHR 1000 Watt Series 7.5V to 60V Models Models 7.5-130 2060 33-33 40-25 60-18 Program Resoiutjon Voltage 1.16mV 1.8mv 3.08mV 6.2mV 9.2mV Current 30.8mA 18.2mA 9.8mA 1.16mV I .8mV 3.08mV 6.2mV...
  • Page 48 GPIB INTERFACE APPENDIX IBIC PROGRAM The IBIC IBWRT Command and the Front Panel LOCAL Switch The NationalInstruments IBIC programis a commoncommunications programfor usewith the GPIB interface. I n themanual- w euse theIBICcommand setwhengivingexamples o f howaperson canusea GPIB programto usethefeatures of our powersupply.The NationalInstruments IBIC programcan affectthe functionality of thefrontpanelLOCALswitch.Theproblem arises because o f thewaythe IBIC IBWRT commandaddresses t he power supply.When in local mode, the deuce only returnsto remotemodeif the interfaceis addressed by the computer, T heIBWRT command will not re-address t he interface whenused...

This manual is also suitable for:

Xhr series