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Philips PM2813 User's Manual

1. 6 9 i sales np 966 xm 9 at e000 sis Jl t 565 Output rear panel 2 4 Users Manual 2 2 BASIC OPERATION The programmable power supplies offer a combination of programming capabilities and a variety of dc output power ratings that make them ideal for power systems applications The V and S as well as the V and S terminals have been connected to each other at the factory ar 22 POWER SUPPLY S output V 0 channel V d S 22 Each output channel be programmed to the desired dc voltage or dc current output function Self contained measurement and readback capability eliminate the need for using a separate multimeter to externally meter the output channel The readback voltage and current of the selected output channel can be monitored on the front panel display measure function Protective circuitry within the power supply limits or turns off an output channel when an abnormal condition occurs The following protection features have been implemented e OVERVOLTAGE and OVERCURRENT e UNREGULATED OUTPUT e OVERTEMPERATURE OUT OF SENSE CAPABILITY COUPLED PROTECTION of output channels Each output channel can operate as a constant voltage source CV mode or as a consta
2. C 7 TESLA sect te beri 2 6 2 8 3 6 Performance 3 13 Tim interval 4 4 Trigger sc cetur ie dare trate T IBS LS EQUES ees 2 6 Trigger Lines cou ae 2 2 Trigger Bus 5 27 Trigger Bus 3 6 Tutorial Local 4 8 V Variable Load Resistance 5 15 Verification Performance 3 12 Voltage Programming an Output 4 9 Voltage drop due to Load Lead Resistance 5 10 Voltage Settings 2 8 W WARNING eS Poe SOE eden Rh TA Rie RE PEDES 1 1
3. 5 19 lt E 9 g4 tr 74 E 2 O 64 o 0 12 B T2 T T T T T 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70 0 10 20 30 40 50 60 70 VOLTAGE U V VOLTAGE U V VOLTAGE U V ST5835 30V 10A 60W 60V 5A 60W 60V 10A 120W Figure 5 5 1 Output Channel Characteristics As an example look at the 30V 10A 60W output channel ratings e For voltages from 0 to 6V the current can increase to its maximum of 10A For voltages gt 6 to 30V the current can increase to its maximum along the stated curve e g 20V gives maximum of 3A e For currents from 0 to 2A the maximum voltage can be 30V For currents gt 2 to 10A the voltage can increase to its maximum along the stated curve e g 5A gives a maximum of 12V 5 8 Users Manual PM2831 32 The following characteristic shows the work area of the output parameters The linear system power supplies PM2831 and PM2832 can source as well as sink currents There is however only one setting for current When the power supply is used as a load the value of the sink current will always track the positive setting V Pmax Vmax Pmax Constant voltage as well as constant current mode possible Only constant current mode possible 1 5V ST6878 A max 0 Imax A Figure 5 5 2 Output channel characteristics This characteristic shows that the
4. 5 23 Autoranging 52er Pee eee dead weed SE he eee aed C 6 C GALLIDrAHOM an edd QW DEG ee 2 8 Calibration ee be Re 2 4 Calibration 6 AU TION SES ROUE LE ue er eae d pae dE 1 1 Channel Selecting an Output Channel 4 7 Setting an Output 4 12 Clear Status esum rhe rhe dc RUE Ee pat 2 6 Communication D B Test 3 6 Constant GUITentu ei ii cR TI pede teine alia dust eed Y 5 13 Constant Voltage 5 13 uU IURE nente deep qeu init 3 2 Crossover Point cuer ei emu RR ae Pees Gal 5 13 Current Settings 44 kord Ltd oiler tbe pe ded pne E n PEERS 2 8 Current Sink 5 9 Current Setting an Output 4 9 Programming an Output 4 14 D BECOME 2 4 Display Controller Test 3 6 Display Indicators ei s Ele ERI iw 4 6 dde tor C 6 1 2 Users Manual E EMI Standards recente Monte pier ieee pei eis reals 2 14 Enabled ns ega eer we e aes Be ue uere
5. 2 A Nox gt e e EN lt CAUTION Do not connect a load to the sense terminals S S because the maximum current through the switch is limited to 4 A Currents exceeding this limit will damage the switch Also make sure that the sense wires used for remote sensing are disconnected from the sense terminals to prevent current through the sense switches Remote sensing The SENSE switch is in REMOTE position if 61 is open The sense terminals must be connected to the load 51 CN CN 51 kat EN FON lt Users Manual 210mm Oooo 0 0000 OUTPUT SET FAULT E OD OC 0000 8 OOOO 0000 LO2xQOQOOOL I Half size model 420mm 0000 OUTPUT SET FAULT OOOO RESET 108mm SENSE OUTPUTS VAS MAX 5 IQQ A FI E M o 9 i A SENSE OUTPUT T 2090 0 09 0 2n A t SENSE In Ema Full size model ST8203 Installation Instructions 3 7 3 5 OUTPUT CONNECTIONS This section describes the following output con
6. lload l2 oror CAUTION Only output channels with equivalent voltage and current ratings may be connected in series or parallel to prevent damage to one of the channels For maximum output capacity refer to section 5 5 1 Output channel ratings and characteristics For more information about connections refer to section 5 6 Advanced use Introduction to your PPS 2 13 2 3 2 Multiple loads If more than one load is connected to an output channel use separate wires to connect each load This minimizes mutual coupling effects and takes full advantage of the power supply s low output impedance Each pair of wires should be as short as possible to reduce wire inductance and noise pickup to prevent the loads from mutually influencing each other due to load fluctuations The loads must be connected in parallel not in series S V V S 1 load 2 CORRECT Parallel connection of loads S V V S load 1 load 2 1 1 WRONG Series connection of loads Note To prevent noise pickup you are advised to twist the sense wires and shield them from each other In principle there is no restriction about the number of loads that can be connected Remote voltage se
7. 2 2 BASIC OPERATION 2 2 1 Local operation 2 2 2 Remote operation 2 2 3 Sense modes ae ee yn 2 3 ADVANCED 2 3 1 Output channel interconnections 2 3 2 Multiple loads Users Manual INSTALLATION INSTRUCTIONS 3 1 3 1 INTRODUCTION 3 1 3 2 INITIAL INSPECTION 3 1 3 3 OPERATOR SAFETY INSTRUCTIONS 3 1 3 4 3 2 3 4 1 Mechanical installation 3 2 3 4 2 Electrical installation 3 3 3 4 3 Front Connection 3 4 3 5 OUTPUT CONNECTIONS 3 7 3 5 1 Output channel connections 3 7 3 5 2 GPIB connections 3 8 3 5 3 Trigger bus connections 3 8 3 6 ACCEPTANCE TESTS 3 9 3 6 1 Brief CHECK nt 3 9 3 6 2 Interface check 3 11 3 6 3 Performance Verification 3 12 GETTING FAMILIAR WITH THE POWER SUPPLY 4 1 4 1 INITIAL SETUP OF YOUR POWER SUPPLY 4 1 4 1 1 Power up 4 1 4 1 2 Instrument i
8. INSTRUMENT ISUMMARY NTRANSITION STATUS OPERATION INSTRUMENT ISUMMARY NTRANSITION STATUS PRESET STATUS QUEUE NEXT STATUS QUESTIONABLE EVENT STATUS QUESTIONABLE CONDITION STATUS QUESTIONABLE ENABLE STATUS QUESTIONABLE ENABLE STATUS QUESTIONABLE PTRANSITION STATUS QUESTIONABLE PTRANSITION STATUS QUESTIONABLE NTRANSITION Users Manual STATUS QUESTIONABLE NTRANSITION STATUS QUESTIONABLE INSTRUMENT EVENT STATUS QUESTIONABLE INSTRUMENT CONDITION STATUS QUESTIONABLE INSTRUMENT ENABLE STATUS QUESTIONABLE INSTRUMENT ENABLE STATUS QUESTIONABLE INSTRUMENT PTRANSITION STATUS QUESTIONABLE INSTRUMENT PTRANSITION STATUS QUESTIONABLE INSTRUMENT NTRANSITION STATUS QUESTIONABLE INSTRUMENT NTRANSITION STATUS QUESTIONABLE INSTRUMENT ISUMMARY EVENT STATUS QUESTIONABLE INSTRUMENT ISUMMARY CONDITION STATUS QUESTIONABLE INSTRUMENT ISUMMARY ENABLE STATUS QUESTIONABLE INSTRUMENT ISUMMARY ENABLE STATUS QUESTIONABLE INSTRUMENT ISUMMARY PTRANSITION STATUS QUESTIONABLE INSTRUMENT ISUMMARY PTRANSITION STATUS QUESTIONABLE INSTRUMENT ISUMMARY NTRANSITION STATUS QUESTIONABLE INSTRUMENT ISUMMARY NTRANSITION SYSTEM KLOCK SYSTEM KLOCK SYSTEM ERROR SYSTEM SET SYSTEM SET SYSTEM VERSION SYSTEM VERSION SYSTEM VERSION 1990 0 SYSTEM VERSION 1993 0 B 3 SCPI approved SOURCE CURRENT LEVEL IMMEDIATE AMPLITUDE AUTO SOURCE CURRENT LEVEL IMMEDIATE AMPLITUDE AUTO SOURCE VOLTAGE LEVEL IMMEDIATE AMPLITUDE AUTO
9. PY 3 1 Initializations eme RU t eiue OE 2 6 Installation 3 1 Instrument Identification 4 2 Interface Capabilities 5 7 Interface Check ue ule nana ae eu ur eee A 3 11 Instability zs sire o ote eed ae tm IS 5 36 Index 1 3 L Load Effect usos ora wali exu tux C 6 Load Lead Resistance 5 10 Loads in 5 35 5 36 Local Sensing 28 su eee ee leas 2 9 5 10 5 30 5 33 C 6 Mod er a ews Ge d ueris Ra eee C 6 Eocal Operation e A OA eS ga 2 1 5 2 local Lockout LEO mt mda tnu eR RAI RGDMP de ae 4 3 Manual Step 5 22 Microprocessor Timer 3 6 Load 2 xo ee e RE erp a ra es 2 13 N Noise PICKUD sorde ee Sh RE Ea ums 2 9 2 11 5 36 Nonvolatile Memory 5 4 O 2 e eu ee aes 2 4 Operate Mode ws enh Wie eid pe a eee OD Vau ted y Pus C 6 Output Adjustment te he Rt Ee CR GR 5 2 Output Channel Cha
10. SOURCE VOLTAGE LEVEL IMMEDIATE AMPLITUDE AUTO SCPI Conformance Information B 5 B 4 SCPI syntax and style REMARK Itis advised that you use the SYSTEM VERSION command to control compatibility of the application program with respect to the SCPI implementation of the programmable power supply used This is helpful for future SCPI compatibility OUTPUT PROTECTION COUPLING INSTRUMENT OUTPUT PROTECTION COUPLING INSTRUMENT OUTPUT PROTECTION COUPLING STATE OUTPUT PROTECTION COUPLING STATE SOURCE CURRENT PROTECTION DELAY SOURCE CURRENT PROTECTION DELAY SOURCE LIST INDEX NSELECT SOURCE LIST INDEX NSELECT SOURCE LIST SEQUENCE START SOURCE LIST SEQUENCE START SOURCE LIST SEQUENCE STOP SOURCE LIST SEQUENCE STOP SOURCE LIST TIMER SOURCE LIST TIMER SOURCE LIST SOURCE SOURCE LIST SSOURCE SYSTEM UNPROTECT STATE SYSTEM UNPROTECT STATE SYSTEM UNPROTECT SELECT SYSTEM UNPROTECT SELECT SYSTEM UNPROTECT PWORD SYSTEM POCLEAR SYSTEM POCLEAR SYSTEM VERSION TEST INSTRUMENT TEST SYSTEM Abbriviations Symbols amp Terms C 1 C 1 APPENDIX C ABBREVIATIONS SYMBOLS 8 TERMS Abbreviations ac Alternating current ADDA Analog Digital Digital Analog AH Acceptor Handshake AMPL Amplitude ANSI American National Standards Institute AUX Auxilliary BNC Bayonet Normal Connector CAL Calibration CAT Catalog CC Constant Current CLE Clear CLS Clear screen or Clear statu
11. STATE SOURCE CURRENT PROTECTION STATE SOURCE VOLTAGE LEVEL IMMEDIATE AMPLITUDE SOURCE VOLTAGE LEVEL IMMEDIATE AMPLITUDE SOURCE VOLTAGE LIMIT HIGH SOURCE VOLTAGE LIMIT LOW SOURCE VOLTAGE PROTECTION LEVEL SOURCE VOLTAGE PROTECTION LEVEL SOURCE VOLTAGE PROTECTION TRIPPED SOURCE POWER LIMIT HIGH SOURCE FUNCTION MODE SCPI Conformance Information B 3 SOURCE LIST VOLTAGE SOURCE LIST VOLTAGE POINTS SOURCE LIST CCURRENT SOURCE LIST CURRENT POINTS SOURCE LIST GENERATION SOURCE LIST GENERATION SOURCE LIST INDEX NSELECT SOURCE LIST SEQUENCE START SOURCE LIST SEQUENCE STOP STATUS OPERATION EVENT STATUS OPERATION CONDITION STATUS OPERATION ENABLE STATUS OPERATION ENABLE STATUS OPERATION PTRANSITION STATUS OPERATION PTRANSITION STATUS OPERATION NTRANSITION STATUS OPERATION NTRANSITION STATUS OPERATION INSTRUMENT EVENT STATUS OPERATION INSTRUMENT CONDITION STATUS OPERATION INSTRUMENT ENABLE STATUS OPERATION INSTRUMENT ENABLE STATUS OPERATION INSTRUMENT PTRANSITION STATUS OPERATION INSTRUMENT PTRANSITION STATUS OPERATION INSTRUMENT NTRANSITION STATUS OPERATION INSTRUMENT NTRANSITION STATUS OPERATION INSTRUMENT ISUMMARY EVENT STATUS OPERATION INSTRUMENT ISUMMARY CONDITION STATUS OPERATION INSTRUMENT ISUMMARY ENABLE STATUS OPERATION INSTRUMENT ISUMMARY ENABLE STATUS OPERATION INSTRUMENT ISUMMARY PTRANSITION STATUS OPERATION INSTRUMENT ISUMMARY PTRANSITION STATUS OPERATION
12. be programmed to the desired operating current The sum of the voltage settings determines the voltage limit points As an example consider two output channels in series refer also to section 5 6 2 1 Program the voltage setting of both output channels to one half of the total voltage limit point At load voltages lt 15 of the total voltage limit point one output channel will operate in the CC mode At load voltages gt Ts ofthe total voltage limit point the output channel that was in the CC mode will change to the CV mode while the other output channel will regulate the current in the CC mode and provide the balance of the voltage required by the load Note that the total voltage over the load is the sum of the individual readback output voltages provided the load voltage 1 of total voltage limit point WARNING To guarantee the safe use of the power supply the total maximum voltage at each terminal must not exceed 240V with respect to ground There are two ways of sensing the load when connecting output channels in series i e local sensing and remote sensing Using your Programmable Power Supply 5 33 Local sensing outputs series Connect the load wires to the V terminal of output channel 1 and the V terminal of output channel 2 and interconnect the V terminal of output channel 1 and the V terminal of output channel 2 Connecting the S of output channel 2 to the S of output channel 1 while removing the loca
13. cc es 2 4 Environmental Aspects 2 14 External Step 5 26 F Family sets ore ig Re Ee ee Ede 2 1 Metti ca pid ee op 3 2 Fault Handling 132404 di bare bat eee eee kand 5 2 Firmware Versions 2 2 zuo eue ier donde ae eel pee I Rift 4 2 Fixed Load Resistance 5 15 Front Connection Option 2 1 3 4 Front Panel see noite Eee Uer Sere ler 2 2 Front Panel Layout dde Meee lin edd DE ERR 4 3 bos Est a win e e bed dr E E ln m Bo BRAS 3 3 G Getting Started caches lr De amine ane ae o 4 1 GPIB oy unc Tee WIESE iae eau Ius 2 6 GPIB Connections 3 6 GPIB Gontrol em ve ne EI 5 28 GPIB Controller Test 3 6 GPIB Device Address 4 2 GPIB IEEE 488 Connector 2 2 GPIB Initerface knre krtel ier bey ot hth 2 14 Identity ii 2 6 IEEE 4881 Standard nn ER Des at es aa 2 6 IEEE 488 2 Standard 2 6 Initial Inspection 2 2l A ee ie PR OES
14. channel s i Verify set the CALlibration access CODE Switch the power supply to local control 1 Store the voltage and current settings of all output channels 999 store addresses 12 Recall the stored voltage and current settings from all output channels 999 recall addresses 13 Step from one recalled group of settings to the next group of settings 25 d Pencil point operation push button to reset the power supply while power is on 1 The CALIBRATION mode is entered when you turn on the power supply while pressing the AUX key 2 Tounlock the keyboard press the ENTER key for approximately 5 seconds 4 6 Users Manual 4 2 2 Display indicators In the OPERATE mode the display can show up to 16 characters which are refreshed four times per second On the front plate just below the display a number of status abbreviations e g CV Constant Voltage have been placed Above each status abbreviation an annunciator w sign can be displayed to indicate the validity of the corresponding status abbreviation The enabled output channels 1 to 3 in the OPERATE mode plus the REM and SRQ status abbreviations can also be displayed Example of a voltage setting Vset for output channel 1 r selected output channel selected function set value 1 V S T 1 A 2 3 4 V E
15. e OUTPut This subsystem is used to control an output channel SOURce This subsystem is used for source and setting functions of an output channel such as source definitions voltage protection settings current protection settings automatic stepping STATus This subsystem is used for handling the device dependent operational and questionable status information SYSTem This subsystem is used to handle system and control functions such as lockout front panel control define the power on clear behavior request for status information TEST This subsystem is used to test the instrument 2 10 Users Manual 2 2 3 Sense modes Each output channel has been provided with a set of four terminals The inner terminals have been marked as V oltage and V oltage while the outer terminals have been marked as S ense and S ense 5 V V S Each output channel can be connected to a load in two different ways e through the V and V terminals causing the power supply to operate in its local sense mode through the V and V and S and S terminals causing the power supply to operate in its remote sense mode Local sensing S V V 5 load At delivery the sense terminals are interconnected with the voltage terminals This is called local sensing If the voltage drop across both of the wires to the load is ne
16. lt 2 5 E z ENTER g 20006 gt x A Verify set the output current of the selected channel Verify set the overvoltage trip level of the selected channel Enable disable the overcurrent protection of the selected channel Verify set the reprogramming delay Verify set the bit mask of the fault register Show the contents of the fault register Reset the overvoltage overcurrent fail protection Adjust the output voltage of the selected channel Adjust the output current of the selected channel Only in OPERATE mode Input a decimal number Turn off key Turn on key Input a decimal point Erase previous key stroke backspace or leave the STEP function Enter the input value or exit the current function Step through the following control functions a Enter the STEP MENU function press ENTER Set AUTO STEP function on or off Program the step TIME INTerval Set CONTINUOUS step function on or off Define START AT entry of loop sequence Define STOP AT entry of loop sequence b COUPLE voltage and current PARAmeters Getting Familair with the Power Supply 4 5 c COUPLE PROTection of all output channels d SetSTandBY AT Power ON behavior on or off e Adjust the CONTRAST of the display 0 9 f LOCK the KEYboard 2 g Verify set the GPIB ADDRESS 0 30 h Verify the identity and firmware version of the power supply its output
17. of power off Using your Programmable Power Supply 5 5 Extended STEP possibilities i e the capability to step sequentially through a number of predefined voltage and current settings This can be done Manually using the STEP key Automatically at predefined intervals internal timer Externally by a STEP line trigger via the trigger bus by a trigger via the GPIB interface You can use this feature to generate test patterns and simulate ramp functions The following table shows in which operating modes the STEP capabilities can be used TRIGGER SOURCE LOCAL OPERATION REMOTE OPERATION MANUAL STEP key Not possible AUTOMATIC AUX key SOURCE LIST commands INIT ABORT command EXTERNAL STEP line STEP line Trigger STEP line trigger EXTERNAL GPIB not applicable xTRG GET command Closed case calibration i e your power supply can be calibrated without removing the cover or even without removing the instrument from your system cabinet This feature allows you to calibrate your power supply at its normal operating temperature The recommended calibration interval is one year Refer to section 7 3 3 Calibration for complete calibration details Protection circuitry for safe operation of your power supply by providing protection against OVERTEMPERATURE by reporting an UNREGULATED output channel situation by reporting conflicts in parameter settings by reporting erroneous situations during op
18. power supply is in the local state If the supply is in the remote state REM is displayed press LCL If the REM text does not disappear the LCL key is disabled remotely by the Local Lockout LLO command from the GPIB controller If the display shows the measured output voltage and current of one of the output channels the power supply is in the OPERATE mode Before starting with the tutorial set the power supply to the STANDBY mode by pressing the OPR STBYkey Notes Formultiple output models the selected output channel number n will be displayed For a single output model the number n will not be displayed 4 4 4 Selecting an output channel Make an output channel active as follows If you have a single output model skip the first three lines of the following sequence Press SELECT to select the desired output channel The display then shows the selected output channel Press ERABE to enable the selected output if not already enabled The display shows STANDBY ENABLED n Press SR to set the power supply to OPERATE mode The display shows n yy yyA ENABLED n Getting Familair with the Power Supply 4 9 4 4 2 Setting an output voltage Do not connect any load The V and S terminals must be interconnected as well as the V and S terminals 1 Set the voltage of the selected output channel to 5V by pressing V 5 The di
19. regulation The load effect is the maximum change in the steady state of the regulated output voltage or current resulting from a full load change in the load current of a CV supply or in the load voltage of a CC supply LOCAL MODE opposite of the REMOTE mode In this mode the power supply can be operated locally via the keypad control keys LOCAL SENSING The voltage is sensed directly at the power supply terminals The power supply is shipped from the factory with local sensing OPERATE MODE opposite of the STANDBY mode In this mode the power supply is able to deliver power PARD ripple and noise Periodic And Random Deviation of the DC output voltage or current from its average value over a specified bandwidth All influence and control quantities must remain constant PROGRAMMING ACCURACY Maximum deviation between the programmed value and the actual output value at calibration temperature 2 C Abbriviations Symbols amp Terms C 7 PROGRAMMING RESOLUTION Average programming step size That is the smallest change that can be obtained either using the front panel keys or a controller PROGRAMMING RESPONSE TIME The maximum time for the output to settle to a programmed value within a settling band after having finished executing the settle command READBACK ACCURACY Maximum error in the readback value of an output voltage or current at calibration temperature 2 C REMOTE MODE opposite of the LOCAL mode
20. section describes the use and capabilities of the Front Connection Unit mounted underneath the power supply The Front Connection Unit provides the interconnections between the rear and front terminals The following programmable power supply types have a front connection unit single output model PM2811 x5z dual output model PM2812 x5z e triple output model PM2813 x5z single output model PM2831 x5z dual output model PM2832 x5z x Number assigned to various output ratings z Country version Basic operation Every output channel has been provided with four output terminals a ground terminal and a SENSE switch FOUR OUTPUT TERMINALS The inner 2 banana sockets are for the power output i e V and V The outer 2 banana sockets are for the sense input i e S and S ONE GROUND TERMINAL The ground earth terminal has been connected to the housing for grounding and shielding purposes ONE SENSE SWITCH This switch enables you to select local or remote sensing Note Switching from remote to local or from local to remote may cause a sense break detection To avoid this it is advised to switch modes only at power off Electrical properties The maximum voltage between any terminal and ground 240 V The maximum current through an output terminal 15A The maximum current that may be switched 4A Installation Instructions 3 5 Local sensing The SENSE switch is in LOCAL position if S1 is closed
21. sections describe how to use the front panel control keys in combination with the 16 character display and the annunciators concerned To be able to use the front panel keys the power supply must be in the local mode If the supply is in the remote mode REM text displayed press LCL If the power supply does not react after you press the LCL key this key is disabled remotely by the Local Lockout LLO command from the GPIB controller Pressing the front panel keys when the power supply is in the remote mode will have no effect on programmed settings It is however possible to view the actual settings on the front panel display by using the front panel keys SELECT V OVP DELAY UNMASK DISP and AUX 4 2 1 Keyboard controls The front panel keyboard controls the following power supply functions 10 GJ a n 666 pe OVP o 7 amp B Bt 2 FUNCTION EY DESCRIPTION OUTPUT control 1 9 Toggle between OPERATE and STANDBY 2 Select an individual channel applicable only for multiple output models EAE Enable disable the selected channel applicable only for multiple output models SET output Verify set the output voltage of the selected channel Users Manual FAULT handling Adjust output Numeric input Instrument control 0 Oo 0000000 9 DISP s fs 98
22. state or enabled ENABLED state It is also possible to verify or set voltage and current settings In this mode the power supply can be calibrated At the end of the calibration the power supply will enter STANDBY mode The following diagram shows the possible output channel states OUTPUT CHANNEL DISABLED ENABLED Power supply STANDBY no power no power Power supply OPERATE no power power output 2 6 Users Manual 2 2 1 Local operation Using the front panel keys you can program an output channel voltage or current On the front panel display you can read back the actual voltage and current of the selected output channel Operating information about the instrument and the selected output channel as well as output specific error messages are shown on the display in the following ways see the following figure text annunciators pointing at abbreviations on the front panel right below the display 28 programmable power supply xxV yyA zzW ee LCD display text annunciators text keypad abbreviations Keypad nnn keypad You can use the keypad as follows to control your power supply control interface and general functions via a menu e switch between the operate and standby mode e set the supply to local control if not remotely locked e reset the power supply i e return to the power on state e store recall step voltage and current s
23. the models and their output channels have the same terminal block see the following diagram This means that all output channels have the local or remote sensing feature The load is supplied with power voltage and or current through the output terminals V and V The readback of the output voltage is done through the input terminals S and S Using your Programmable Power Supply 5 11 Local sensing mode Local sensing is used when the voltage across the load does not need to compensate for the voltage drop across the load leads This may be the case when the following conditions exist e Short wires between the output channel and the load Rigag gt Low current through the connected load 575837 Figure 5 5 5 Connection of a Load in the Local Sense Mode Remote sensing mode Remote sensing is used if the voltage accross the load must exactly match the programmed value remote sensing will namely compensate for the voltage drop accross the load leads This mode will be useful when the following conditions exist e Long leads between the output channel and the load Rigag lt Riead High current through the connected load 575847 Figure 5 5 6 Connection of a Load in the Remote Sense Mode Note that with remote sensing the readback of the load voltage is monitored at the load terminals When using the remote sensing mode it is necessary to twist the sense wires to avoid disturbance and noise pi
24. the power supply is used to count the interval time between two consecutive steps If the trigger source EXTernal or BUS the active trigger source depends on whether or not the START line of the trigger bus at the rear is active EXTERNAL STEPPING via the trigger bus If the START line is active LOW step pulses from the external STEP input line will cause the next step to be performed EXTERNAL STEPPING via the GPIB If the START line is not active HIGH the next step will be performed on the receipt of the TRG command or the GET code via the GPIB Note LOW 0 to 0 8V and HIGH 2 to 5V Trigger bus control External stepping via the trigger bus can be done in two ways 1 In the synchronous mode In this mode all three bus signal lines have their own functions 2 In the asynchronous mode In this mode the READY line is externally connected to the START line To control the recall memory via the trigger bus the STEP mode may not be automatic and the START input line must be pulled LOW This will enable the STEP line to trigger the next step to be executed external triggering Pulling the START line LOW will also disable the manual STEP key When enabled a STEP pulse will trigger the step mechanism The leading edge of the STEP pulse makes the READY line active LOW within 100 nanoseconds The READY line will be released when the internal processing is finished and the STEP line is HIGH The internal processing time doe
25. to enable output channel 1 Press stsy_ to make the OPERATE mode active Press STEP to enter the step mode Press 2 0 to select start address 20 of the list The display reads 1 STEP TO 20 Press ENTER to initiate the automatic stepping e Check that the memory address is automatically incremented every 5 seconds on the display Exit the automatic stepping by pressing the backspace key The last recalled voltage and current setting remain active Using your Programmable Power Supply 5 25 Remote control automatic stepping The actual memory address index 1 to 999 can be selected using the SOURCce LIST INDex NSELect command The selected memory address can be requested by means of the SOURce LIST INDex NSELect query A sequence list of memory addresses can be defined using the SOURCce LIST SEQuence STARt and SOURCce LIST SEQuence STOP commands A sequence list of memory addresses can be reported using the SOURCce LIST SEQuence STARt and SOURce LIST SEQuence STOP queries The length of a sequence list i e the number of voltage and current points can be requested by the SOURce LIST VOLTage POINts and SOURce LIST CURRent POINts queries The step interval time can be defined by the SOURce LIST TIMer command and be requested by the SOURce LIST TI
26. 3 14 Press V 2 Press store 3 5 Enter input keys plus V and Press RECALL 2 3 ENTER Remote control store recall Press V to verify the voltage of 5V Press to verify the current of 0 3A The recall memory voltage can be programmed using the SOURceJ LIST VOL Tage command The recall memory current can be programmed using the SOURce LIST CURRent command The actual memory address index 1 to 999 can be selected using the SOURCce LIST INDex NSELect command Example e REQUIREMENTS Fill the memory address 23 with 5V 0 3A and the memory addresses 33 34 and 35 with respectively 4V 1 SOLUTION Send gt Send gt Send gt Send gt Send gt Send 5 Send gt Send gt INST STAT OFF INST NSEL 1 LIST IND 23 LIST VOLT 5 LIST CURR 0 3 LIST IND 33 A 3V 1A and 2V 1A for output channel 1 STANDBY mode active Output channel 1 selected Address 23 selected 5V 0 3A stored at address 23 Address 33 selected LIST VOLT 4 3 2 AV 3V and 2V stored at respectively the addresses 33 34 and 35 LIST CURR 1 1 1 1A stored atthe addresses 33 34 and 35 5 22 Users Manual 5 5 5 Step functions When a list of memory addresses has been filled with voltage and current settings it can be used in one of the following ways 1 AUTO_STEP OFF This will invoke the manual step functio
27. ALLEL connection to increase the total output current capability h l2 L load h l2 V4 V2 Vioad X Rioad Dj Pioad X Vioad Examples 2x 60V 2A 60V 4A maximum power 240W e 2x 120V 1 120V 2A maximum power 240W 2x 8V 15A 8V 30A maximum power 240W CAUTION Only output channels with equivalent voltage and current ratings may be connected in series or in parallel to prevent that the channel with the lowest ratings will be damaged Using your Programmable Power Supply 5 7 5 5 HOW TO USE THE OPERATING FEATURES This section contains information about how to use the features of your power supply such as e Dealing with output channel specific ratings and characteristics e Performing local and remote sensing Using an output channel as constant voltage or constant current source e Using the memory functions Store recall voltage current settings Step manually through voltage current settings Step automatically through voltage current settings 5 5 1 Output channel characteristics PM2811 12 13 Each individual output channel can supply power according to its output characteristic Figure 5 5 1 below gives you information about the three possible output channel characteristics The power output is rated and limited according to the formula P power U voltage x current
28. AM en M ace ru tiem dui rud 3 6 Readback oui va wa vus YE 2 8 Readback Accuracy irog iA i aee Even a EDU SY C 7 READ PUES EE hone apt isd 2 2 3 6 Rear Banel Re ne es IM wet NUAGES WE 2 2 Remote Mode ssa srt SES GU A eR PR C 7 Remote Operation ERG SU da ES RENE 2 1 5 3 Remote Sensing 2 9 5 11 5 31 5 34 5 36 C 7 Reprogramming delay 4 4 BES o E a tust Rit ae f etc du 2 6 Reset Overcurrent 4 11 Reset Overvoltage Protection 4 9 ROM TeSt es du eRe Vee ceed tl du ee RA 3 6 S Salely stich kane athe gla de dioc anal 1 1 Safety Standards 2 14 SCPI Compatibility 2 7 SCPI Conformance Information B 1 SCPI Subsystems 2 7 Sel Test 6 totes mnt a Des sich cot 2 4 Se nse MOOGS 3 Sid m Oe ere tte cie Bet uec t 2 9 Serial Connection of Output Channels 2 11 5 32 Service Manual 503 2 20 ee god x ameet eb EOM RU Pei RI UR ala A 1 Ser
29. FLUKE PM2811 PM2812 PM2813 PM2831 PM2832 Programmable Power Supplies Users Manual 4822 872 00824 January 1997 Rev 3 5 98 1997 Fluke Corporation All rights reserved Printed in the Netherlands All product names are trademarks of their respective companies LIMITED WARRANTY amp LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is one year and begins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any product which in Fluke s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable internat
30. ION 3 4 1 Mechanical installation The instrument is fan cooled and must be installed in a location that allows sufficient space at the three important sides rear left and right Each side must have a space of at least 1 inch 25 mm The fan located at the rear cools the instrument by drawing air into the openings at the rear and exhausting it through openings on the sides Each instrument output channel has its own fan Installation Instructions 3 3 3 4 2 Electrical installation Pre installation checks Read Chapter 1 OPERATOR SAFETY before making any connections Before inserting the power plug into the power supply ensure that the ground conductor is functioning correctly Check that this instrument is suitable for the local situation as indicated on the model number plate sticker on the rear panel NOTE If the instrument must be wired to conform to local power contact your FLUKE Sales and Service Center to have it modified The power inlet module located at the rear is an integral power adapter and includes the power input socket the holder for the two power fuses and the POWER ON OFF 1 0 switch The two power fuses are located behind the flap next to the power input socket WARNING When a fuse must be replaced the instrument must be turned off and disconnected from the power Refer to Chapter 2 in the Reference Manual 3 4 Users Manual 3 4 3 Front Connection Unit Introduction This
31. In this mode the power supply is programmed remotely from your PC via the GPIB REMOTE SENSING A way of sensing in which a power supply monitors the voltage directly at the load via the extra sensing wires The resulting circuit action compensates for the voltage drop in the wires to the load up to a maximum of 1 volt total SOURCE EFFECT line regulation The maximum change in the steady state of the regulated output voltage or current resulting from any change in the AC voltage source within the specified values STANDBY MODE opposite of the OPERATE mode In this mode the power supply is operable but the output channels are disabled no power is supplied TEMPERATURE COEFFICIENT The maximum change in the regulated output voltage or current per degree Celsius following a change in the ambient temperature after a 30 minute warm up time Application for PM2812 and PM2813 D 1 APPENDIX D APPLICATION FOR PM2812 AND PM2813 The following application support information is meant for the user who wants to extend the maximum current of the PM2812 or PM2813 Power Supply by parallel connection of channels PARALLEL CONNECTION OF OUTPUT CHANNELS When you connect output channels in parallel to a load be aware of the following The down programmer This is a circuit in the output channel that unloads the internal filter capacitors when the output voltage is set to a lower value to achieve a short response time The down programme
32. Mer query The source of the next step in the sequence list the step trigger can be defined and requested by the SOURce LIST SOURce command respectively the SOURce LIST SOURce query The following sources are possible If source TIMer the internal timer of the power supply is used to count the step interval time If source EXTernal or BUS the active trigger source depends on whether the START line of the trigger bus at the rear of the power supply is active or not If active step pulses from the external STEP input will cause the next step to be performed If not active the next step will be performed after the TRG command or after the GET trigger command The execution of a sequence list can be started using the INITiate IMMediate command The first address is the START address and the last address is the STOP address A sequence list can be executed continuously by means of the INITiate CONTinuous command The execution of a sequence list can be stopped by means of the ABORt command If the execution is stopped the last recalled voltage and current setting remain active 5 26 Users Manual Example REQUIREMENTS Step automatically through the predefined list of voltage and current settings stored at the memory addresses 20 through 40 When the end of the list is reached it must be started again at the beginning The next voltage and current setting must be output for channel 1 at an interva
33. NABLED 1 2 3 v v REM SRQ STEP FLT CV CC OCP EN Note output channel indication is displayed only for multiple output channel models Example of readback data for output channel 2 r selected output channel r readback voltage readback current 2 5 JO 3 JV 0 121 6 31 JA ENABLED 12 3 v v REM SRQ STEP FLT CV CC OCP EN Note output channel indication is displayed only for multiple output channel models Getting Familair with the Power Supply 4 7 4 3 OUTPUT CHANNEL CONNECTIONS WARNING prevent SHOCK HAZARD turn off the line power before making output channel connections or disable the output channel concerned All wires and straps must be properly insulated and connected with terminal block screws securely tightened Before any connection can be made the plastic terminal block cover must be unscrewed and removed When the connections have been made the plastic terminal block cover must be secured again Each output channel has been provided with a set of four terminals The inner two have been marked as V oltage and V oltage while the outer two have been marked as S ense and S ense At delivery the V and S as well as the V and S terminals have been interconnected by straps Rear view of an output channel connected to a load loca
34. OCP EN OCP DIS key IF OCP was enabled THEN OCP is disabled ELSE OCP is enabled IF OCP has been enabled the annunciator above the text willbe displayed An overcurrent or overvoltage trip protection can be reset by pressing the RESET key The display of OVERCURRENT or OVERVOLTAGE will also disappear In the CV mode the annunciator above the text CV will be displayed In the CC mode the annunciator above the text CC will be displayed 5 18 Users Manual Remote control in CV or CC mode The voltage Vee can be programmed by the SOURCE subsystem command SOURce VOLTage LEVel IMMediate AMPLitude The voltage can be requested by the SOURCE subsystem query SOURce VOLTage LEVel IMMediate AMPLitude The output voltage can be read back by the MEASURE subsystem query MEASure SCALar VOLTage DC Example Send VOLT 3 4 Set 3 4V Send VOLT Send request voltage setting Read lt set_voltage Read voltage setting Print set_voltage Display voltage setting Send MEAS VOLT Send readback guery Read lt meas voltage Read output voltage Print meas voltage Display measured voltage The current Iset can be programmed by the SOURCE subsystem command SOURce CURRent LEVel IMMediate AMPLitude The current Iser can be requested by the SOURCE subsystem query SOURce CURRent LEVel IMMediate AMPLitude The output current can be read back by the MEASURE subsystem
35. PECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF DATA WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT TORT RELIANCE OR ANY OTHER THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequential damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction such holding will not affect the validity or enforceability of any other provision Fluke Corporation P O Box 9090 Everett WA 98206 9090 USA or Fluke Industrial B V P O Box 680 7600 AR Almelo The Netherlands SERVICE CENTERS To locate an authorized service center visit us on the World Wide Web http www fluke com or call Fluke using any of the phone numbers listed below 1 800 443 5853 in U S A and Canada 31 402 678 200 in Europe 1 425 356 5500 from other countries Programmable Power Supplies CONTENS 1 OPERATOR SAFETY 1 1 INTRODUCTION 12 SAFETY PRECAUTIONS 1 3 CAUTION AND WARNING STATEMENTS 1 4 SYMBOLES ies bu retire ek ee 15 IMPAIRED 2 INTRODUCTION 2 1 INTRODUCTION TO YOUR PROGRAMMABLE POWER SUPPLY
36. SB Most Significant Bit MSD Most Significant Digit MSS Master Summary Status MTBF Mean Time Between Failures MTTR Mean Time To Repair NRF Numeric forgiving NSEL Numeric select NTR Negative transition OC P Overcurrent Protection OPC Operation complete Operate OPER Operation OPT Option OUTP Output OV P Overvoltage Protection Periodic And Random Deviation PC Personal Computer PMT Program Message Terminator PON C Power ON Clear POW Power pp peak to peak PPS Programmable Power Supply PROT Protection PS Personal System PSC Power on Status Clear PTR Positive transition PWOR Password QUES Questionable RAM Random Access Memory RCL Recall REM Remote RFI Radio Frequency Interference rms root mean square ROM Read Only Memory RQS Request Service RST Reset Users Manual SAV SCAL SCPI SEL SRE SR Q SOUR STAT STB STBY STP SYST TC TRG TRIP TST UK UNPR UNR USA VAL VDE VERS VOLT WIND Sense Save Scalar Standard Commands for Programmable Instruments Select Sequence Service Request Enable Service Request Source State Status byte Standby Step System Temperature Coefficient Trigger Tripped Test United Kingdom Underwriters Laboratories Unprotect Unregulated United States of America V
37. age and current settings must be output for channel 1 Output channel 2 must be disabled Using your Programmable Power Supply 5 23 SOLUTION Press AUX ENTER to enter the STEP submenu Check that the AUTO STEP is OFF or press the OFF 0 key to set the AUTO STEP function off Press ENTER to leave the STEP submenu Press SELECT only for multiple output models to select output channel 1 Press 5st to enable output channel 1 Press SELECT only for multiple output models to select output channel 2 Press to disable output channel 2 Press SELECT as many times as necessary to select output channel 1 again Press r 10 make the OPERATE mode active Press STEP to enter the step mode Press 2 0 ENTER to select start address 20 of the list The display reads 1 STEP 20 LOOP Press V_ if you want to see the actual voltage on output channel 1 at the memory address as indicated on the display Press if you want to see the actual current from output channel 1 at the memory address as indicated on the display Press STEP to select the next memory address of the list Repeat this loop until step 40 is made active ENDLOOP Press SELECT to select output channel 2 The display reads 2 STEP 4ODIS Press lt to leave the step mode Remark When the next st
38. age or current in a controlled way through an output channel Your power supply model can have one two or three output channels Unless stated otherwise the information in this manual applies to all models For technical and environmental performance specifications refer to the Reference Manual REMOTE OPERATION The family of Programmable Power Supplies is primarily intended to be used in an automatic system environment programmed via a controller For that reason the power supplies have been eguipped with a GPIB interface and conform to IEEE 488 2 as well as the SCPI 1993 0 standards For remote operation refer to the Reference Manual operating references LOCAL OPERATION The power supplies can be used as bench top instruments stand alone via their keypads and displays For local operation refer to section 4 4 getting started section 5 4 operating features or the Reference Manual operating references Family overview PM2811 xyz Single Output System PM2812 xyz Dual Output System PM2813 xyz Triple Output System PM2831 xyz Single Output System PM2832 xyz Dual Output System Country Version 1 Euro 3 USA 4 UK 5 Swiss Revision Number 1 Standard Version 5 Version with Front Connection Option see section 3 4 3 Number assigned to various output ratings 2 2 Users Manual FRONT PANEL The front panel contains a keypad and LCD for dialogue with the operator Local operation manual of the po
39. alue Verband Deutscher Elektrotechniker Version Voltage Window Abbriviations Symbols amp Terms C 5 C 2 Glossary of symbols 33 A ADD percentage beginning of a common command guery separation sign for commands gueries beginning of a subsystem command guery part end of a guery degree e g C degree Celsius Ampere Celsius differentiate e g di derived current foot gravity m s Hertz current Kelvin meter milliampere millisecond millivolt Megahertz Overcurrent Overvoltage Power Resistance second time micro 0 US voltage Volt Waitt Impedance command query part that may be omitted default node command query part that can be repeated sign to indicate a choice or C 6 Users Manual C 3 Glossary of terms AUTORANGING A power supply is autoranging if it can supply the maximum rated power over the continuous range of voltage and current CALIBRATION MODE In this mode the power supply can be adjusted to comply with external calibration standards DRIFT The maximum change of the regulated output voltage or current during an 8 hour period long term drift following a 30 minute warm up period short term drift All influence and control quantities must remain constant during these periods Drift includes both random and periodic deviations over the bandwidth from zero frequency DC to the upper frequency limit LOAD EFFECT load
40. ce bus At the rear you will find a 24 pin female connector in which the connector pinning assignment is in accordance with IEEE 488 2 1987 An IEEE cable connects your power supply via an IEEE interface board to a controller SHIELD SRG NDAC DAV DIO4 DIO2 aT TTT TT TT TTT TTT Teo ST6064 LOGIC GND GND GND DIO8 DIO6 GND 10 8 6 Figure 3 4 IEEE 488 IEC 625 Connections 3 5 3 Trigger bus connections There are three SMB connectors at the rear START STEP and READY The modes and functions of the connectors are shown in the following table NAME MODE FUNCTION START input Enables stepping via the STEP input STEP input Executes the next step READY output Indicates whether a stepis finished ready for the next step The trigger bus connectors can be used to recall output channel settings from the recall memory For more information refer to section 5 5 5 Step functions Installation Instructions 3 9 3 6 ACCEPTANCE TESTS The acceptance tests give information about the correct operation of the instrument after installation The interface test must be performed when using the programmable power supply for remote operation via the Controller GPIB interface 3 6 1 Brief check After turning on your power supply the following self tests on the hardware parts will be performed automatically ROM test RAM test e GPIB controller test Microprocessor t
41. ckup in the sense input terminals which might cause instability of the output During remote sensing the power supply can compensate for voltage drops up to a specified minimum value This is called the remote sense capability see the Reference Manual Appendix A When the voltage drop exceeds this value sense FAIL may occur The output voltage and current are then reduced to zero and the display shows the FAIL message 5 12 Users Manual When the sense leads are disconnected the power supply goes into the local sense mode as the V and S terminals are internally interconnected via resistors Yet you are strongly recommended to interconnect the V and S terminals with the straps if you use the local sense mode as open sense inputs are sensitive to noise Moreover the output specifications are not guaranteed when the sense terminals are open Output modules with low voltage ratings may have less sense capability for output voltages in the upper part of the voltage range e g the 8V 15A module for the sense range from 4V to 8V see the Reference Manual Appendix A For power supplies with a Front Connection Unit the sense capability is reduced with about 5mV A per load lead Using your Programmable Power Supply 5 13 5 5 3 Constant voltage or constant current source Your power supply has been designed according to the automatic crossover principle This means that each output channel will operate in the Constant Voltage CV m
42. dentification 4 2 4 2 FRONT PANEL LAYOUT 4 3 4 2 1 Keyboard controls 4 3 4 2 2 Display indicators 4 6 43 OUTPUT CHANNEL CONNECTIONS 4 7 44 GETTING STARTED 4 8 4 4 1 Selecting an output channel 4 8 4 4 2 Setting an output voltage 4 9 4 4 3 Setting an output current 4 10 Programmable Power Supplies 11 5 USING YOUR PROGRAMMABLE POWER SUPPLY 5 1 5 1 INTRODUCTION 5 1 5 2 LOCAL OPERATION 5 2 5 3 REMOTE OPERATION 5 3 5 4 OPERATING FEATURES 5 4 5 5 HOW TO USE THE OPERATING FEATURES 5 7 5 5 1 Output channel characteristics 5 7 5 5 2 Local and remote sensing 5 10 5 5 3 Constant voltage or constant current source 5 13 5 5 4 Store recall function 5 19 5 5 5 Step functions 5 22 5 6 ADVANCED USE 5 28 5 6 1 Parallel connection of output channels 5 29 5 6 2 Serial connection of output channels 5 32 5 6 3 Parallel connection of loads 5 35 5 6 4 Tips for Remote Sensing Applications 5 36 IV User
43. ed LIMITATIONS The output power is limited by e the output specific maximum power Pmax according to the formula Iset X Vset lt Pmax RESTRICTIONS The output voltage is restricted by the output specific maximum voltage or the overvoltage protection level OVP set Note When the output voltage exceeds the overvoltage protection level both the output voltage and current are reduced to zero The output current is restricted by the output specific maximum current or the programmed maximum current level lac Note Ifthe overcurrent protection has been enabled and the output current exceeds the maximum current Ise the output voltage and current are reduced to zero If the overcurrent protection has been disabled the output current Will be kept at its maximum 1 2 The consequence is that the output voltage will not reach its programmed value V and the output channel will go into the CC mode Using your Programmable Power Supply 5 15 Example for a variable load resistance power Veet 7 Voltage programmed OVP set load let Current programmed output Iset Roag 22 to 200 variable Required The Veo and Ise parameter have been coupled for the selected output channel e Iset 1A Programmed current becomes 1 e Veet Programmed voltage becomes 8V The crossover point resistance Rg Vset let 80 If Rigag increases f
44. ements that must be followed by the user to ensure safe operation and to keep the instrument in a safe condition 3 2 Users Manual The instrument described in this manual is to be used by properly trained personnel Do not remove the cover or perform any adjustment maintenance or repair unless you are qualified to do so and are aware of the hazards involved Symbol Before connecting the instrument to line power ensure that the power ground is functioning correctly Before any other connection is made the instrument must be connected to the earth ground conductor via the three conductor power cord The power plug must be inserted into a socket outlet provided with ground contact The grounding protection must not be defeated by use of an extension cord without a ground conductor WARNING Any interruption of the protective conductor inside or outside the instrument or disconnection of the protective ground terminal is likely to make the instrument dangerous Intentional interruption is prohibited The instrument is shipped from the factory with a power cord that has a plug appropriate for the country in which it is sold If a different power plug or power cord is required contact your Fluke Sales and Service Center CAUTION When an instrument is brought from a cold into a warm environment condensation may cause a hazardous condition therefore make sure that the grounding requirements are strictly adhered to 3 4 INSTALLAT
45. ent Case 2 Constant Voltage Output Current from a fixed minimum value to the maximum Case 3 Constant Voltage Output Current from zero to the maximum For all cases it is assumed that there are two or more channels needed to be able to supply the maximum current Case 1 Constant Current If a fixed current is needed program the current setting of the channels to an equal part of the required current Program all channels except one to the maximum voltage needed plus a small margin to make sure that these channels will stay in the Constant Current mode Use the one channel to regulate the voltage across the load in the range from OV to the maximum D 4 Users Manual Case 2 Constant Voltage Output Current from a fixed minimum value to the maximum The following procedure is useful only if you have one channel that can cover the complete range from the minimum to the maximum and if the other channels together can supply the fixed minimum current Program the current setting of the latter channels to an equal part of the minimum value and use these channels in the Constant Current mode Use the one channel in the Constant Voltage mode To make sure that the other channels will not leave the Constant Current mode set their voltage to a value that is a little higher than the Constant Voltage required Program the current setting of the Constant Voltage channel to a value that is sufficient to supply the maximum additional current r
46. ep is executed the next voltage and current setting in the list is made active and output on the selected channel Automatic step function Local control automatic stepping The AUTO STEP function the CONTINUOUS STEP function the step interval time the START address and the STOP address can be set via the AUX key The automatic step function can be started by pressing the STEP key 5 24 Users Manual Example REQUIREMENTS Step automatically through the predefined list of voltage and current settings stored at the memory addresses 20 to 40 When the end of the list is reached it must be started again at the beginning The next voltage and current setting must be output for channel 1 at an interval time of 5 seconds SOLUTION Press AUX ENTER to enter the STEP submenu Press 1 to set the AUTO STEP function on Press AUX to set the TIME INTerval function Press 5 ENTER to set the interval time at 5 seconds Press AUX to set the CONTINUOUS step function Press 1 set the CONTINUOUS step function on Press AUX to set the START AT function Press 2 0 ENTER to set the start address of the sequence list at 20 Press AUX to set the STOP AT function Press 4 0 ENTER to set the stop address of the sequence list at 40 Press ENTER to leave the AUX menu Press SELECT only for multiple output models to select output channel 1 Press
47. equired If the minimum is OA or if you don t have one channel that can cover the range from the minimum to the maximum use the procedure given under Case 3 Example Requirements Load voltage 10V constant Load current 10A to 15A variable Protection Over voltage 11V Over current 15A Available channel ratings Three channels all 60V 5A Suitable settings Channel 1 Vset 10 1V Iset 5A OVPset 11V Channel 2 Vset 10 1V Iset 5A OVPset 11V Channel 3 Vset 10 0V Iset OVPset 11V Set Coupled Protection ON via the AUX key This will shut down all channels at once when the protection circuit of any channel becomes active Disable Overcurrent Protection of channels 1 and 2 with the OCP EN OCP DIS key Enable Overcurrent Protection of channel 3 with the OCP EN OCP DIS key Application for PM2812 and PM2813 D 5 The channels 1 and 2 operate in the Constant Current mode and Channel 3 in the Constant voltage mode This example will not work if the current through the load decreases below 10A Then the current contribution of Channel 3 is reduced to 0A and either Channel 1 or Channel 2 or both will enter the Constant Voltage mode at 10 1V As there are now at least two channels in Constant Voltage mode the one with the lowest Vset Channel 3 will activate its down programmer sinking about 0 5A If you are not quite certain about the minimum current required you are advised to use the procedu
48. eration e Protection circuitry to protect a connected load against OVERVOLTAGE on each output channel against OVERCURRENT on each output channel against exceeding the sense capability on each output channel with the ability to couple the voltage and current setting of the same output channel not valid for the linear power supplies with the ability to couple the protection mechanisms of different output channels of the same power supply To increase the total output power connect an output channel to another output channel of the same voltage and current ratings The connection can be made in series or in parallel The output channels to be connected can be from the same power supply or from different power supplies however the capability of coupling protection mechanisms is only possible for output channels within the same power supply 5 6 Users Manual The following illustrations show the possible connections e SERIES connection to increase the total output voltage capability Vioad V1 V2 lload Vioad Rioad Pioad Vioad X load O Or WARNING Examples To guarantee the safe use of the power supply the total maximum voltage at each terminal must not exceed 240V with respect to ground e 2x 60V 2A 120V 2A maximum power 240W e 2 120V 1A 240V 1A maximum power 240W e 2x 8V 15A 16V 15A maximum power 240W PAR
49. essing the V key When the setting approaches Vsource 0 6V the power supply switches to the constant current CC mode at the level of Iset In this situation the negative current of the power supply tracks the programmed positive value lset load The voltage can be raised by pressing the V key When the setting approaches Vsource 0 6V 0 15V the power supply will exit constant current mode and return to the constant voltage mode OA 5 10 Users Manual 5 5 2 Local and remote sensing All models have the ability to sense the output voltage locally or remotely The wires between an output channel and the connected load have a resistance which causes a voltage drop If the voltage drop is not acceptable remote sensing must be applied Rload 575836 Figure 5 5 4 Voltage drop due to Wire Resistance Rigag The formula to calculate the voltage drop is Vgrop lioad X the total voltage drop of both wires the current through the load e the total resistance of both wires between the power supply and the load Figures 5 5 5 and 5 5 6 show the difference between a local and remote connection has been indicated CAUTION To prevent shock or short circuit you must set the power supply to the standby mode before making any changes in the output channel connections or you must disable the output channel only possible for multiple output models All
50. ettings 1 to 999 in the instrument s battery backed up memory recall memory You can use the keypad as follows to control one of the output channels select an output channel only for multiple output models enable or disable an output channel only for multiple output models unmask delay or display the setting of bits in the fault register resetthe overvoltage and overcurrent protection You can use the keypad as follows to perform an output channel setting set or change the output voltage or current e set the overvoltage trip level enable or disable the overcurrent protection Introduction to your PPS 2 7 2 2 2 Remote operation Via the General Purpose Interface Bus GPIB you can program your programmable power supply to receive input data and to send output data An example of input data listener is that a voltage and current can be programmed directly to the selected output channel An example of output data talker is the readback voltage and current of the selected output channel IEEE 488 2 compatibility IEEE 488 2 is a standard that is additional and complementary to the IEEE 488 1 standard Your programmable power supply conforms to the IEEE 488 2 standard For more information refer to the Reference Manual SCPI compatibility SCPI Standard Commands for Programmable Instruments is a command definition standard for programmable test and measurement instruments Your programmable power supply confo
51. ety aspects INTRODUCTION TO YOUR PROGRAMMABLE POWER SUPPLY Describes what your power supply is and how you can use it INSTALLATION INSTRUCTIONS Describes the steps necessary to prepare your power supply for use GETTING STARTED WITH YOUR PROGRAMMABLE POWER SUPPLY Describes how to get started with some commonly used functions of the power supply A step by step tutorial describes how to operate the functions in the local manual mode USING YOUR PROGRAMMABLE POWER SUPPLY Gives functional information about how to use the power supply in the local as well as the remote mode Additional information is available in the following appendices A ACCESSORIES Gives a functional overview of the accessories that are supplied or can be ordered B SCPI CONFORMANCE INFORMATION Gives information about versions of the confirmed and approved SCPI commands and gueries C ABBREVIATIONS SYMBOLS 8 TERMS D APPLICATION FOR PM2812 AND PM2813 Gives support information to extend maximum current of the PM2812 or PM2813 by parallel connection of channels Operator Safety 1 1 1 OPERATOR SAFETY Read this page carefully before beginning to install and use the instrument 1 1 INTRODUCTION The instrument described in this manual is designed to be used only by qualified personnel WARNING Servicing described in this manual is to be done only by qualified service personnel To avoid electrical shock do not service the instrument unle
52. ge and current displayed Self test errors If a power on self test fails all output channels will remain disabled and the display will indicate the type of failure and the output channel on which it occurred If this is the case refer to section 3 6 Acceptance tests 4 2 Users Manual 4 1 2 Instrument identification Your power supply can be identified by its model number and version number At delivery the power supply has a default IEEE device address To identify your power supply proceed as follows 1 Start up the identification by pressing the AUX key as many times as necessary to dislay the following ADDRESS aa Note address aa is the actual GPIB device address default 28 2 Proceed with the identification by pressing the JAUX key again so that the display shows the following 28 Vx x y zz Note PM28nn is the model number of the power supply Vx x is the firmware version of the power supply y is the number of the output channel 1 2 or 3 Zz is the firmware version of the output channel The firmware versions of all output channels can be verified by pressing SELECT to change Y output channel number on the display Note The SELECT function is applicable only for multiple output models 3 Finish the identification by pressing ENTER Getting Familair with the Power Supply 4 3 4 2 FRONT PANEL LAYOUT The following
53. gligible the voltage at the load will equal the programmed value Introduction to your PPS 2 11 Remote sensing 5 V V S load If the voltage drop across the V and V wires to the load is substantial the voltage at the load will be less than the programmed value To prevent the voltage at the load from being less than the programmed value the sense wires must also be connected to the load remote sensing This way of sensing allows the power supply to compensate for voltage drops in the wires between the power supply and the load The sense wires must be connected directly to the load poles Note Long sense wires are susceptible to noise pickup To minimize noise pickup twist each pair of sense wires together Shielding around the sense wires may be necessary in more extreme cases 2 12 Users Manual 2 3 ADVANCED OPERATION 2 3 4 Output channel interconnections Identical output channels can be connected in the following ways to increase the total output capability series to increase the output voltage capability Refer to section 5 6 2 Serial connection of output channels for more information V4 V2 T O Or Parallel to increase the output current capability Refer to section 5 6 1 Parallel connection of output channels for more information
54. guery MEASure SCALar CURRent DC Example Send CURR 0 23 Set 0 23A Send CURR Send reguest current setting Read lt set current Read current setting Print set current Display current setting Send MEAS CURR Send readback guery Read meas current Read output current Print meas current Display measured current Using your Programmable Power Supply 5 19 The overvoltage protection level OVP can be programmed by the SOURCE subsystem command SOURce VOLTage PROTection LE Vel The overvoltage protection level can be requested by the SOURCE subsystem query SOURce VOLTage PROTection L E Vel Example Send VOLT PROT 7 Set 7V protection level Send MEAS PROT Send readback query Read lt meas over voltage Read overvoltage protection level Print meas over voltage Display overvoltage protection level Theovercurrenprotectiorcarbeenabled disabledyheSOURCEsubsystemcommand SOURce CURRent PROTection STATe Example Send 5 CURR PROT STAT ON Enable overcurrent protection Send CURR PROT STAT OFF Disable overcurrent protection 5 5 4 Store recall function Your programmable power supply has a recall memory battery backed up to be used for storing and recalling voltage and current settings of all output channels The battery back up feature ensures that the stored values will be kept in memory during power off The recall memory consists of 999 addresses numbered from 1
55. hannel 2 Connecting output channels in series to a load to increase the maximum output voltage or connecting them in parallel to a load to increase the output current This chapter also contains information about main operating features and describes how to use those features You can use your programmable power supply in one of the following ways 1 Ina system environment via a system controller PC IEEE interface This is called remote operation 2 Asabench top instrument using the front panel keys indicators and display This is called local operation Each output channel of the power supply is a dc power source with controlled limits for power voltage and current An output channel can operate as a constant voltage CV source as a constant current CC source or as a constant current CC sink PM283x only depending on voltage current settings and load conditions The maximum output voltage or current is limited by the following 1 The maximum voltage and current cannot exceed the output channel specific limits 2 The product of voltage and current cannot exceed the output channel specific power limit according to the formula Vset x Iset lt Pmax For output limits refer to section 5 5 1 Output channel ratings and characteristics CAUTION You may turn on your power supply if you are sure that the installation instructions as described in Chapter 3 have been followed The power supply is ready for use w
56. ill now enter the Constant Voltage CV mode as the current needed by the load is less than Iset 5A This implies that the voltage across the load will change to the highest Vset 12V As Vset of CH 2 is 10V its down programmer will become active so that CH 1 will supply 3A plus the current the down programmer of CH 2 will sink So this set up is not suitable for load currents which can be lower than Iset of the Constant Current channel For this case there are two solutions You can set the current of CH 1 to a value below 3A so that CH 1 will enter the Constant Current mode as indicated in Figure D 1 Or you can set both channels to the same voltage so that there will be a constant voltage across the load When the voltages are exactly equal the down programmer will not become active and the current through the load will be equal to the sum of the currents of the individual channels Be careful in using the Standby and Disable modes Consider the following case You have connected two channels in parallel You don t need the second channel to supply current because the first channel can supply enough current You disable the second channel to switch it off The down programmer of this channel will try to sink its output to OV As the first channel still supplies a voltage the down programmer of the second channel will continuously sink current This causes power dissipation inside the case which must be prevented as the Power Supply is n
57. imer test Communication D B test Display controller test ADDA output channel s test The tests will not show up on the display unless an error is detected In the case of a hardware error the following text error code is displayed ERROR n ddd n Indication of the error source ddd Summation of the decimal values of the individual errors The following error codes are possible n 0 Main CPU error DECIMAL ERROR DESCRIPTION 128 Display controller failure 64 Bank switch failure 32 Not used D B failure IEEE controller failure Processor timer failure RAM failure ROM failure 1 o 3 10 Users Manual n 1 2 or 3 CPU error of output channel 1 2 or 3 DECIMAL ERROR DESCRIPTION 128 Not used 64 ROM checksum error 32 Configuration checksum error 16 Calibration checksum error 8 Checksum error of the default settings 4 Processor timer failure 2 Not used 1 Output channel not responding If the display is correct character will be displayed on the 16 character positions Also the text ENABLED 1234567 tttttt REM SRQ will be displayed for 1 second gH og gH og go gy gw ENABLED 1234567 t t t t t t REM SRQ Next the text INITIALIZING will be displayed for 1 second If the mode after power on is OPERATE the readback voltage a
58. in the OPERATE mode The actual voltage current setting can be stored using the STORE key The actual voltage current setting can be recalled using the key Example REQUIREMENTS Fill the memory address 23 with 5V 0 3A and the memory addresses 33 34 and 35 with respectively 4V 1A 3V 1A and 2V 1A for output channel 1 SOLUTION Press 2 to make the STANDBY mode active For multiple output units press SELECT a number of times until output channel 1 has been selected see indication 1 on the display Press V 5 ENTER to set the actual voltage at 5V Press 3 ENTER to set the actual current at 0 3A Press store 2 3 to store the 5V and 0 3A at memory address 23 Using your Programmable Power Supply 5 21 TER to set the actual voltage at 4V ENTER to set the actual current at 1A to store the 4V and 1A at memory address 33 TER to set the actual voltage at 3V to store the 3V and 1A at memory address 34 ENTER to set the actual voltage at 2V to store the 2V and 1A at memory address 35 Verify the programmed memory addresses using and the numeric keys e g Press V 4 E Press 1 Press store 3 3 even Press V 3 E Press sron
59. ings e Readback of actual voltage and current Manual and automatic step function e and overcurrent protection e Overtemperature and sense protection Coupled protection of output channels Closed case calibration facility protected by password External trigger facilities auto step Bullt in self test and diagnostics routines VI Users Manual INITIAL INSPECTION Check the contents of the shipment for completeness and note whether any damage has occurred during transport If the contents are incomplete or if there is damage to the instrument or its accessories notify the FLUKE sales or service office nearest you to facilitate the repair or replacement of the instrument or accessories The following items must be included in the shipment Programmable Power Supply e Reference Manual English Operation Manual English or Operation Manual German or Operation Manual French Power Cord Two spare fuses e Two mounting brackets only for the 19 inch models For further information refer to APPENDIX A Accessories Programmable Power Supplies VII INSIDE THIS MANUAL This operating manual has been aimed at the experienced user as well as the user new to Programmable Power Supplies It will help the reader to use and operate the power supply manually local operation or from a PC via the GPIB remote operation 1 2 OPERATOR SAFETY Gives full information about saf
60. ional price Fluke reserves the right to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is returned to a Fluke authorized service center within the warranty period To obtain warranty service contact your nearest Fluke authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Fluke authorized service center Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that the failure was caused by misuse alteration accident or abnormal condition of operation or handling Fluke will provide an estimate of repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY S
61. is correct ELSE display controller failure m send gt TEST SYSTEM Selftest power supply query read lt lt response_string gt IF lt response_string gt 0 THEN test result is correct ELSE the lt response_string gt hardware error number m send INST NSEL 1 Select output channel 1 only for multiple output models send TEST INSTRUMENT Selftest of the output channel 1 read lt lt response_string gt IF lt response_string gt 0 THEN test result is correct ELSE the response string hardware error number Repeat this check for all available output channels Note For meaning of the hardware error numbers refer to section 3 6 1 Brief check or to Error Messages in the Reference Manual 3 12 Users Manual The following check can be executed for all available output channels A choice has been made for output channel 1 of a multiple output model For single output models the output channel does not have to be selected and the channel indication will not be displayed m Use the SELECT key to select the output channel to be displayed only for multiple output models m send INST NSEL 1 Select output channel 1 m send OUTP STAT ON Enable selected output channel Read on the display 1 STANDBY ENABLED 1 REM m send INST STAT ON Set power supply in OPERATE mode Read on the display 1 xx xxV yy yyA ENABLED 1 REM Note channel indication and the text ENABLED n will be di
62. it may be necessary to shield the sense leads Connect the shield to ground at the power supply end only Prevent Instability The impedance of the load leads together with the capacitance of the load can form a filter which may cause a phase shift the sense feedback loop This can cause instability or even oscillations which must be prevented If there is doubt about the stability of the output you can check this with an oscilloscope There are no simple rules to prevent instability for all circumstances but the following guidelines are valid most often 1 Use short leads with low resistance for the load and the sense connections 2 Twist the load leads together to minimize additional inductance 3 Twist the sense leads together or shield them to minimize interference with the environment 4 Keep the load capacitance as small as possible Accessories A 1 APPENDIX A ACCESSORIES A 1 Supplied with the instrument e Reference Manual English 4822 872 00827 Operation Manual English 4822 872 00824 or Operation Manual German 4822 872 00825 or Operation Manual French 4822872 00826 Power Cord EURO 5322 321 23297 or Power Cord SWISS 5322 321 10679 or Power Cord UK 5322 321 10681 or Power Cord USA 5322 321 10644 Two spare fuses Two mounting brackets not with PM2811 A 2 Optional The following accessories can be ordered via your local Fluke Sales and Service Center 19 Rack mount
63. ithin a few seconds after power up After a warm up time of 30 minutes your power supply meets the specifications listed in the Reference Manual 5 2 Users Manual 5 2 LOCAL OPERATION Local operation of your power supply is done through the front panel keys and display Operational and error information is shown on the display The keys are used for operator communication and have been placed into functional groups This makes the functional use of the power supply very easy OUTPUT control control over the output channels SET output setting a channel output FAULT handling fault handling per output channel output adjustment adjusting a channel output numeric control input of figures or special keys instrument control control over the instrument r reset reset the power supply OPR STBY set OPERATE or STANDBY mode r OUTPUT control I SELECT Select output channel ENABLE DISABLE enable disable output channel rV set output voltage FI set output current ESET output OVP set overvoltage protection trip level OCP EN OCP DIS enable disable overcurrent protection DELAY verify set reprogramming delay RESET reset protection circuits I FAULT handling UNMASK verity set fault mask DISP display fault register V adjust output voltage output adjustment I adjust output current 0 OFF figures 1 ON 2 9
64. l sense jumper between S and V of output channel 2 will compensate for the voltage drop across the wires from output channel 2 to output channel 1 The following diagram shows the wiring scheme OUTPUT 1 OUTPUT 2 ST5874 Figure 5 6 3 Local Sensing with Two Outputs in Series 5 34 Users Manual Remote sensing outputs in series Connecting extra sense wires from the load to the S terminal of output channel 1 and the S terminal of output channel 2 compensates for the voltage drop in the wires from the load to the V and V terminals Connecting the S of output channel 2 to the S of output channel 1 while removing the local sense jumper between S and V of output channel 2 will compensate for the voltage drop across the wires from output channel 2 to output channel 1 The following diagram shows the wiring scheme OUTPUT 1 OUTPUT 2 ST5875 Figure 5 6 4 Remote Sensing with Two Outputs in Series CAUTION To prevent noise pickup twist the sense wires and shield them from the environment Using your Programmable Power Supply 5 35 5 6 3 Parallel connection of loads If more than one load is connected to an output channel use separate wires to connect each load This minimizes mutual coupling effects and takes full advantage of the power supply s low output impedance Each pair of wires should be as short as possible to reduce wire inductance and noise pickup The loads must be connected i
65. l sensing remote sensing S V V 5 S V V 5 load load The voltage at the sense terminal s equals the programmed value The voltage at a connected load may differ from the programmed value because of a voltage drop depending on the resistance of the wires to the load and the current through the load If the voltage drop is negligible the load wires only have to be connected to the V and V terminals This is called local sensing However if the voltage drop is significant the voltage at the load can differ from the programmed value To prevent this the straps between the V and S and V and S terminals must be removed and the load wires must also be connected to the S and S terminals This is called remote sensing Note The terminals have been shielded with a plastic block cover which must be removed before any connection can be made WARNING To avoid FIRE HAZARD select a wire large enough to carry short circuit current without overheating Two factors must be considered when selecting the wire size for load connections Conductor temperature i e the current carrying capacity Total voltage drop i e the wire length and thickness 4 8 Users Manual 4 4 GETTING STARTED The various parts of this tutorial must be executed sequentially Before starting with this tutorial make sure the
66. l time of 5 seconds SOLUTION Send 5 LIST SOUR Send 5 LIST TIM 5 0 The next step is automatically initiated by the internal timer Set the interval time at 5 seconds Send LIST SEQ START 20 Set the start address of the sequence list at 20 Send LIST SEQ STOP 40 Set the stop address of the sequence list Send INST NSEL 1 Send OUTP STAT ON Send INST STAT ON Send INIT CONT ON Send INIT at 40 Select output channel 1 Enable output channel 1 Make OPERATE mode active Set the CONTINUOUS step function on Initiate the automatic stepping Check the display of the power supply to verify that the memory address is automatically incremented every 5 seconds Send ABORT Exit the automatic stepping Check that the last recalled voltage and current setting remain active External step functions There are three SMB connectors at the rear START STEP and READY The modes and functions of the connectors are shown in the following table NAME MODE FUNCTION START input Enables stepping via the STEP input STEP input Executes the next step READY output Indicates whether a step is finished ready for the next step Using your Programmable Power Supply 5 27 There is a standard GPIB interface connector at the rear The GPIB interface software supports complete trigger capability If the trigger source TIMer the internal timer of
67. mmed to operate in a remotely controlled instrumentation system via the GPIB You can use each output channel of the power supply as a constant voltage source CV mode as a constant current source CC mode or as a constant current sink PM283x only There are three instrument types available e single output channel power supply dual output channel power supply triple output channel power supply A channel can have various output voltage and output current ratings The operating structure and operating principles are identical for each instrument type and for each output channel The following features have been implemented in each power supply Power on self test and diagnostics routines e Readback capability of the measured voltage and current of each output channel e Each output channel offers the ability to sense locally or remotely For remote sensing the sense terminals S and S must be connected to the load instead of the V and V output terminals then the programmed voltage is guaranteed to be across the load in spite of the voltage drop in the wires to the load Anonvolatile memory battery backed up This enables you to store and recall voltage and current settings of all output channels refer to section 5 5 4 Store Recall function save and recall the front panel settings refer to the common commands SAV and RCL In this way stored settings can be recalled even after a long period
68. n i e the next step is initiated by the operator For instance by manually stepping through a list of predefined voltages and currents a test pattern of voltage and current settings will be generated The manual stepping will be executed for all enabled output channels Refer to section Manual step function on this page 2 AUTO_STEP ON This will invoke the automatic step function i e the next step is initiated when the interval time has expired For instance by automatically stepping through a list of sequential voltages and currents a voltage current ramp function will be executed The start and stop address of the sequential list and the interval time between two consecutive steps can be programmed Stepping can be done in one of the following ways 3 CONTINUOUS STEP OFF The predefined sequence of memory addresses is executed only once 4 CONTINUOUS STEP ON The predefined seguence of memory addresses is executed continuously i e repeatedly from start to stop address Stepping will be executed for all enabled output channels Refer to section Automatic step function on the next page Manual step function The manual step function can be executed locally using the key The AUTO STEP function can be set ON or OFF via the STEP MENU under the AUX key Example REQUIREMENTS Step manually through the predefined list of voltage and current settings stored at the memory addresses 20 to 40 The volt
69. n parallel not in series so that loads are not mutually influenced by load fluctuations It is advised to use a pair of DC distribution terminals DT not located at the output channel terminals Note principle there is no restriction about the number of loads that can be connected Remote voltage sensing is recommended if one load is more sensitive than the other s therefore sense directly at the most sensitive load Local sensing loads in parallel The following diagram shows the wiring scheme S LOAD 4V DT v DT A sH Loan 575866 Figure 5 6 5 Local Sensing withTwo Loads in Parallel If local sensing is used locate the distribution terminals DT as near as possible to the output channel terminals 5 36 Users Manual Remote sensing loads in parallel The following diagram shows the wiring scheme ST5867 Figure 5 6 6 Remote Sensing with Two Loads in Parallel If remote sensing is used locate the distribution terminals DT as near as possible to the load terminals CAUTION To prevent noise pickup twist the sense wires and shield them from the environment 5 6 4 Tips for Remote Sensing Applications Prevent Output Noise It is advised to twist or to shield the sense leads to minimize the pickup of envirionmental noise If the sense leads are twisted run them parallel and close to the load leads In environments with heavy noise
70. nd current will be displayed if the output is not DISABLED If not in OPERATE mode the display shows STANDBY If a failure occurs during one of the tests inform your FLUKE Sales and Service Center so that repair or replacement of the instrument can be arranged These tests take a few seconds to run The instrument will be ready for use when the message STANDBY or the readback voltage and current appears on the display Installation Instructions 3 11 3 6 2 Interface check To perform the GPIB interface check the power supply must be connected to the controller via the GPIB therefore you need a GPIB interface card software GPIB drivers a programming language The various parts of the following interface check must be executed sequentially Your power supply goes into the remote state when the first command is sent via the GPIB However the results of programmed commands can still be monitored on the display e g the readback voltage and current Also the text REM will be displayed in the remote state The interface check consists of the following parts m Check the GPIB address setting under the AUX menu m send IDN Identification guery m read lt PHILIPS PM28nn xy 0 Va b Notes 11 12 13 31 or 32 xisthe modelindication yisthe hardware version e a b the firmware version m send gt TST Read result of power on test read lt response string IF lt response_string gt 0 THEN test result
71. nections output channel terminals GPIB connector trigger bus SMB connectors 3 5 4 Output channel connections The number of the output channels of the various power supplies is indicated in the last figure of the model number single dual or triple gt PM2811 and PM2831 single PM2812 and 2832 dual 2813 triple OUTPUT OUTPUT CHANNEL 1 CHANNEL 2 CHANNEL 3 Every output channel connector is identical and consists of four terminals i e two Voltage output terminals and two sense input terminals A load can be connected in one of the following ways e tothe and voltage terminals local sensing tothe and voltage and sense terminals remote sensing local sensing remote sensing S V V 5 S V V 5 load 7 load N WARNING To prevent SHOCK HAZARD turn off the power before making rear output channel connections All wires and straps must be properly insulated and connected with terminal block screws securely tightened Before any connection can be made the plastic terminal block cover must be unscrewed and removed When the connections have been made the plastic terminal block cover must be reinstalled again 3 8 Users Manual 3 5 2 GPIB connections The GPIB General Purpose Interface Bus is identical to the IEC 625 or IEEE 488 interfa
72. nnels Note For the PM2812 and PM2813 you can face a number of restrictions when connecting output channels in parallel to a load Please read Appendix D to get more information of parallel connection of output channels fore these instruments For the PM2831 and PM2832 parallel connection of output channels is only possible in the source non sink mode Connecting output channels in parallel provides a greater current capability than can be obtained from a single output channel In principle you can put more than two output channels in parallel Output channels in parallel configurations can operate in either Constant Voltage CV or in Constant Current CC When channels are connected in parallel with the intention of increasing the current capability it is advised that you set all channels to the same voltage When the channels have the same power characteristics set them to the same current value In general you can handle the following procedure e Set the power supply to STANDBY before making any connections Connect the channels in parallel If a constant voltage is required accross the load proceed as follows Program the voltage setting of all channels equal to the constant voltage required e Calculate the maximum current needed for the load Imax Count with the minimum value of Rigag Program the current setting of the individual channels so that the sum of the values is equal to lj Now you may set the
73. nsing is recommended if one load is more sensitive than the other s therefore sense directly at the most sensitive load Installation Instructions 3 1 3 INSTALLATION INSTRUCTIONS 3 1 INTRODUCTION This section contains instructions for the following e inspecting the contents of the shipment for completeness and or damage during transport initial inspection ensuring the safety of the operator installing the power supply making the input and output connections performing the installation acceptance checks 3 2 INITIAL INSPECTION Inspect the contents of the shipment for completeness and note whether any damage has occurred during transport If the contents are not complete or if there is damage inform your FLUKE Sales and Service Center so that repair or replacement of the instrument can be arranged Pay special attention to the following parts accessories to be supplied refer to Appendix A front panel keys and display rear panel connectors and terminal blocks cabinet surfaces The shipment must contain one power supply plus the accessories supplied For a complete list of accessories supplied refer to the INITIAL INSPECTION page in the front of this manual 3 3 OPERATOR SAFETY INSTRUCTIONS The instrument has been designed and tested in accordance with IEC Publication 1010 for Class 1 instruments and has been supplied in a safe condition This Operation Manual contains WARNING and CAUTION stat
74. nt current source or current sink PM283x only CC mode Asaconstant voltage source the output voltage remains constant while the output current changes due to fluctuations of the load e As a constant current source the output current remains constant while the output voltage changes due to fluctuations of the load Introduction to your PPS After power on the programmable power supply performs a self test If the selftest is succesful the STANDBY OPERATE or CALIBRATION mode will be entered In the OPERATE mode an output channel can be in the ENABLED or DISABLED state only multiple output models power on SELF TEST STANDBY OPERATE CALIBRATION SELF TEST STANDBY OPERATE CALIBRATION DISABLED ENABLED After power on the power supply will test itself Depending on the Power ON DEFinition PONDEF the STANDBY or OPERATE mode is entered The CALIBRATION mode can be entered manually via the AUX key by pressing it during power up or remotely via the GPIB controller In this mode the power supply does not output power i e all output channels have been shut off It is possible however to verify or set voltage and current settings In this mode the power supply is able to output a voltage or a current For multiple output models each individual output channel can be disabled DISABLED
75. numeric control backspace specials ENTER dot LCL gain local control AUX perform system functions instrument control STORE store voltage current settings RECALL recall voltage current settings STEP step through voltage current settings Note applies to multiple output models only Using your Programmable Power Supply 5 3 5 3 REMOTE OPERATION In the remote mode pressing the front panel keys will have no effect on programmed settings It is however possible to view the actual settings on the front panel display by pressing the front panel keys SELECT V OVP DELAY UNMASK DISP LCL and AUX SCPI Standard Commands for Programmable Instruments is a standardized set of commands to be used for remote control of programmable test and measure instruments It defines the syntax and semantics that the controller must use to communicate with an instrument and is implemented in the instrument s firmware Please read the users handbook Standard Commands for Programmable Instruments to get familiar with the SCPI and IEEE 488 2 standards This handbook can be ordered at your local Fluke representative See Appendix A for more information 5 4 Users Manual 5 4 OPERATING FEATURES Your programmable power supply is equipped with a GPIB interface which conforms to the IEEE 488 2 standard and the SCPI protocol Standard Commands for Programmable Instruments The power supply can be progra
76. ode or in the Constant Current CC mode depending on e the programmed output voltage Vset and current lset e the resistance impedance of the load connected to the output channel For a given Vset and Iset an output channel is either Vset Vset or in the CC mode if Rioad lt Iset Iset in the CV mode if Rioad gt In the CV mode the output is a constant voltage so the current through the load depends on the load resistance In the CC mode the output is a constant current so the voltage across the load depends on the load resistance The following picture shows when the output channel goes into the CV or into the mode of operation when connected to a variable resistor Rigag open circuit Voltage Rload gt Re Rc e crossover point V set Rload lt Rc R 0 short circuit ST5848 T T T set Current Figure 5 5 7 Power Output Crossover Point If Rioaq increases Rigag gt Re the output channel goes into the CV mode reducing the current through the load If Rioag decreases Rigag lt Re the output channel goes into the CC mode reducing the voltage across the load 5 14 Users Manual To protect the load against excessive currents the maximum current Iset can be programmed and the overcurrent protection can be enabled To protect the load against excessive voltages the overvoltage protection level can be programm
77. ot designed for this use Application for PM2812 and PM2813 D 3 The same is valid for two parallel connected Power Supplies when one Power Supply is set to the Standby mode The Standby mode like the Disable mode will try to sink all outputs to OV Then the down programmer can also become active when one Power Supply is still in Operate mode Use Coupled Protection for parallel connected channels When one of the parallel connected channels is shut down by its protection circuit and the other channels are not the shut down channel will activate its downprogrammer trying to sink the output to OV This causes the same effect as disabling one channel while the others are still enabled To prevent this set COUPLE PROT ON for each channel via the AUX key Disable Overcurrent Protection for the channels that are used in Constant Current mode Note Coupled Protection is possible only for the channels in the same Power Supply General advise to program parallel connected channels Try to prevent that the down programmer of a channel is continuously active This causes unnecessary dissipation and will diminish the lifetime of the channel The best way to prevent the down programmer of a channel to become active is to use at maximum one channel in Constant Voltage mode and all other channels in Constant Current mode Whether this is possible or not depends on the load requirements We will handle the following cases Case 1 Constant Curr
78. power supply to the operate mode If a constant current is required through the load proceed as follows Program the current setting of the individual channels so that the sum of the values is equal to the value of the constant current required Calculate the maximum voltage needed to supply the constant current Count with the maximum value of Program the voltage setting of all channels equal to the maximum voltage needed Now you may set the power supply to the operate mode 5 30 Users Manual If neither constant voltage nor constant current is required you may program typical values as well There are two ways of sensing the load when connecting output channels in parallel local sensing and remote sensing Local sensing outputs in parallel Connecting the load wires directly to the V and V terminals of output channel 2 keeps the number and the total length of the load wires to a minimum The following diagram shows the wiring scheme S V OUTPUT 1 TWISTED PAIR S V OUTPUT 2 LOAD V T 5 Figure 5 6 1 Local Sensing with Two Outputs Parallel 575872 CAUTION To prevent noise pickup twist the sense wires and shield them from the environment Using your Programmable Power Supply 5 31 Remote sensing outputs in parallel The sense wires are connected from the load to the S and S terminals of output channel 2 This compen
79. power supply will output maximum power only at Vmax Imax and will absorb maximum power at Vmax Imax Overcurrent protection if enabled will also work for sink currents that exceed Igo Overvoltage protection will work also for voltages applied from an external source if the voltage from this source exceeds the overvoltage protection level Using your Programmable Power Supply 5 9 Current sink characteristics PM2831 32 The following figure gives an example that shows the sink characteristics of the power supply The power supply is used as a constant current load for an external source where the sink capability of the power supply is demonstrated Overvoltage protection is set to the maximum level and overcurrent protection is disabled V Vsource External Constant Voltage Source Vsource 0 6V 0 15V Vsource 0 6V A 0 A 576841 Iset load Figure 5 5 3 Current sink characteristics The power supply and the external source this may be another power supply are set to the same output voltage There is no current flow yet The current settings are let source gt load The voltage setting of the load is gradually decreased by pressing the V key The change of the actual voltage setting is not visible on the display because the display will show the constant voltage applied by the external source But the voltage setting of the power supply can be made visible at any moment by pr
80. r will have the same effect on external capacitive loads to shorten the response time The down programmer will sink a fixed current about 10 of the rated current as long as the voltage on the channel output is higher than the programmed setting The down programmer will influence also the result of parallel connected channels when the channels are set to different voltages The channel set to the lowest voltage will activate its down programmer which will behave as a constant current load This current is not shown by the display or by readback Then the total current through the load is not equal to the total readback current of the channels Example Vset 12V 5A 10V lset 5A 10V 8 1 250 CC Vset 10V 3A CH2 lset 5A 10V CV Figure D 1 Channels connected in parallel to a load CH 1 in Constant Current mode CH 2 in Constant Voltage mode D 2 Users Manual This set up will cause no problem as CH 1 supplies a constant current CC of 5A and CH 2 supplies the additional current needed in constant voltage mode CV indicator A problem will arise when the current needed by the load decreases below 5A for example when the load resistance increases This is illustrated by figure D 2 Vset 12V CH1 Iset 5A 40 CC Vset 10V CH2 Iset 5A CV Figure D 2 Channels connected in parallel to a load Both channels are Constant Voltage mode CH 1 w
81. racteristics 5 37 5 8 Output Control dee idee tated gle eae 5 2 Outputs in Parallel 23 24 Rag ete alee 5 30 5 31 Outputs in Series 5 33 5 34 Overcurrent Protection Disable Overcurrent 4 11 Enable Overcurrent Protection 4 10 Reset Overcurrent 4 11 Overvoltage Programming the Overvoltage Trip Level 4 9 Reset Overvoltage 4 9 Parallel Connection of Loads 5 34 Parallel Connection of Output Channels 2 11 5 29 D 1 NL PP AE uum 6 Performance 3 12 Power Inlet 3 4 Poweron Status Clear erect Due ei ya a wae pk 2 6 1 4 Users Manual eani Drama tr nn ented 3 4 Power FUSES 48 oo de RARE ce a air tis 3 4 Programming Accuracy 6 Programming Response C 7 Programming Resolution C 7 R R
82. re given under case 3 Then you must adjust all channels exactly to 10V Case 3 Constant Voltage Output Current from 0 to the maximum This needs the most care to prevent a down programmer to become active because all channels must be set exactly to the same voltage This can best be done at low output currents Do this as follows Connect the channels in parallel Connect a load that allows the required voltage and needs a small current for example 1 of the required maximum current Set all channels to the required Constant Voltage value and to an equal part of the required maximum current If the voltages from all channels are exactly equal then all channels will supply an equal part of the current If a channel does not supply current readback 0 00A select this channel and use the V button to carefully increase the voltage until the channel starts to supply current Check if the other channels still supply current If not you may have increased the voltage of one channel to much If all channels supply current disconnect the load and connect the real load Index l 1 INDEX 19 Inch Rackmount eea a eee A 1 A Acceptance Test 3 9 ACCESSONIES eec e le ex Rue ete oe pn ENS A 1 ADDA Output Channel 3 9 Automatic Stepping 2 8 Automatic Step
83. rms to the SCPI standard For more information refer to the Reference Manual 2 8 Users Manual The programmable functions have been implemented via the GPIB by means of the following SCPI subsystems DISPlay voltage SYSTem SOURce OUTPut gt output channel 1 CALibration INSTrument sense ABORt MEASure lt input channel 1 step INITiate y LH ve input output channel n A An A TEST STATus Introduction to your PPS 2 9 ABORt This subsystem is used for stopping the step function of the power supply CALibration This subsystem is used for calibration of the instrument Your power supply can be calibrated without removing the cover or removing the power supply from your rack measurement setup This feature allows you to calibrate the power supply at its normal operating temperature The recommended calibration interval is one year Refer to the Reference Manual for complete calibration details DISPlay This subsystem is used to control the front panel display INITiate This subsytem is used to start up initiate the step function of the power supply INSTrument This subsystem is used to control the instrument functions MEASure This subsystem is used to measure readback output voltage and output current
84. rom 8Q to 160 then Rigag gt Re so the output channel goes into the CV mode refer to figure 5 5 7 This means that Vig44 8V and becomes 8V 16Q 0 5A If Riad decreases from 80 to 42 then Rigag lt Re so the output channel goes into the CC mode refer to figure 5 5 7 This means that 1A and Vigag becomes 1A x 4Q 4V Example for a fixed load resistance i i V Vol d power Vset set Voltage programme OVP set load OVPset OverVoltage programmed output a Iset Current programmed Required Fixed load resistance Rigag 102 Overcurrent protection disabled OCP DIS The Veet and Iset parameter have not been coupled 5 16 Users Manual lset 0 5A Maximum current through the load becomes 0 5A e OVP 7V Overvoltage protection trip level becomes 7V Sequentially the voltages 2V 4V 6V and 8V will be programmed Vset 2V Vset 4V Veet 6V leet 1A 9 Veet 8V OVP a 9V e RESET load Vset Rioad 2V 10Q 0 2A The output channel stays in the CV mode load Vset Rioag 4V 10 0 4A The output channel stays in the CV mode load Vset Rioag 6V 10Q 0 6A However the maximum output current 0 5A is going to be exceeded Therefore the current through the load becomes 0 5A and the voltage across the load is limited at 0 5A x 102 5V The output channel goes into the CC mode The maximum current
85. s CISPR Comit International Special des Pertubations Radio lectriques COND Condition CONF Configuration or configure CONT Contrast COUP Coupling CP Coupled Parameters CPU Central Processor Unit CSA Canadian Standards Association CURR Current CV Constant Voltage dc Direct current DEF Define or default DEL Delete or delay DEN Display enable DIAG Diagnostics DIS AB Disable DISP Display DT Device Trigger EMC Electro Magnetic Compatibility EMI Electro Magnetic Interference Users Manual EMS EN AB ERR ESB ESE ESR EURO EVEN EXT FL FLT FUNC GEN GET GPIB IEC IEEE IDN IMM IND INIT INST INT or IO ISUM KLOC LCD LCL LEV LIM LRN LSB LSD MAV MAX MEAS MIL Electro Magnetic Susceptibility Enable Error Event Summary Bit Event Status Enable Event Status Register European Event External Failure Fault Function Generation Group Execute Trigger General Purpose Interface Bus International Electrotechnical Commission Institute of Electrical and Electronic Engineers Identification Immediate Index Initiate Instrument Internal Input Output Instrument summary Keyboard lock Liquid Crystal Display Local Level Limit Learn Least Significant Bit Least Significant Digit Message available Maximum Measure ment Military Abbriviations Symbols amp Terms C 3 MIN Minimum MOD Mode M
86. s Manual APPENDIX A ACCESSORIES A 1 Supplied with the instrument A 1 A2 Optional Sipe cet het ane was A 1 APPENDIX SCPI CONFORMANCE INFORMATION B 1 B 1 IEEE 488 2 1987 1 B 2 SCPI Std 1993 0 Confirmed B 1 SCPlapproved B 4 B 4 SCPI syntax and style B 5 APPENDIX C ABBREVIATIONS SYMBOLS amp TERMS C 1 C 1 Abbreviations 1 C 2 Glossary of symbols C 5 Glossary ofterms C 6 APPENDIX D APPLICATION FOR PM2812 AND PM2813 D 1 Programmable Power Supplies V Thank you for purchasing this FLUKE power supply It has been designed and manufactured to the highest guality standards to give you many years of trouble free use The powerful operating features have been combined with an easy and logical operation so that the full power of this instrument can be used every day The main operating features are Multiple output dc power supply e Output modules with various voltage and current ratings Suitable for GPIB as well as benchtop applications e Conforms to SCPI and IEEE 488 2 standards Non volatile memory for 999 settings e Power down memory front panel sett
87. s not include the reprogramming delay time It is the responsibility of the user to choose a STEP rate that is not too high for the power supply and its load condition so that the output can settle within the STEP time Note STEP pulses received while the READY line is low will be ignored 5 28 Users Manual GPIB control GPIB control can only be done in the remote mode of operation An external trigger can be programmed in the following ways Send TRG By sending the common command TRG to the power supply Send GET By sending the GET Group Execute Trigger code over the GPIB interface 5 6 ADVANCED USE This section describes how to connect several output channels with the same ratings to obtain higher output power through a connected load To increase the total output current through a connected load the output channels must be connected in parallel Refer to section 5 6 1 To increase the total output voltage over a connected load the output channels must be connected in series Refer to section 5 6 2 This section also describes the way to connect more than one load to an output channel multiple loads Refer to section 5 6 3 CAUTION Only outputchannels with eguivalent voltage and current ratings may be connected in series or in parallel to prevent that the channel with the lowest output ratings will be damaged Using your Programmable Power Supply 5 29 5 6 1 Parallel connection of output cha
88. sates for the voltage drop in the wires from the load to the V and V terminals The following diagram shows the wiring scheme 5 V OUTPUT 1 V TWISTED PAIR OUTPUT 2 LOAD ST5873 Figure 5 6 2 Remote Sensing with Two Outputs in Parallel CAUTION To prevent noise pickup twist the sense wires and shield them from the environment 5 32 Users Manual 5 6 2 Serial connection of output channels Connecting output channels in series provides a greater voltage capability than can be obtained from a single output channel In principle you can put more than two output channels in series However there is the limitation that the total maximum voltage of each terminal may not exceed 240V with respect to the ground Output channels in serial configurations can operate in either Constant Voltage CV or in Constant Current CC CV OPERATION For CV operation all output channels must be in the CV mode Program the current setting of all output channels to the desired current limit point Then program the voltage setting of each output channel so that the sum of all voltages equals the total desired operating voltage The simplest way to accomplish this is to program each output channel to an equal part of the total desired operating voltage e g three output channel settings of 25 V in series provide 75 V CC OPERATION For CC operation the current setting of each output channel must
89. splay shows n VSET 5 V Enter the output voltage setting by pressing ENTER Check that the display reads approximately 5V Also check that the CV annunciator is on indicating that the selected output channel is in the Constant Voltage mode Program the overvoltage trip level to 7V by pressing The display shows OVSET 7 V Enter the overvoltage trip level setting by pressing ENTER Set the voltage of the selected output channel to 8V by pressing V 8 The display shows VSET 8 V Enter the output voltage setting by pressing ENTER and check that the display reads OVERVOLTAGE Set the output voltage to 6V and reset the overvoltage protection by pressing V 6 ENTER RESET Check that the display reads approximately 6V 4 10 Users Manual 4 4 3 Setting an output current 1 2 g D zh 9 Turn off the power supply Remove the plastic terminal block cover from the output to be tested Connect a short circuit jumper wire between the V oltage and V oltage output terminals as follows 5 V V 5 Note The diameter of the jumper wire must be large enough to carry the maximum short circuit current Turn on the power supply If the supply is in the STANDBY mode or if the selected output channel is disabled repeat the tutorial commands given in sec
90. splayed only on multiple output models If a failure occurs during one of the GPIB interface tests inform your FLUKE Sales and Service Center so that repair or replacement of the instrument can be arranged 3 6 3 Performance Verification If the brief check section 3 6 1 and the interface check section 3 6 2 pass successfully without error messages you may carry out a performance check before starting to use the power supply Appendix B in the Reference Manual gives a complete and simple procedure to verify the performance of your power supply Getting Familair with the Power Supply 4 1 4 GETTING FAMILIAR WITH THE POWER SUPPLY This chapter will help the user new to programmable power supplies 4 1 INITIAL SETUP OF YOUR POWER SUPPLY 4 1 1 Power up routine WARNING Before you turn on your power supply make sure that the power input voltage matches the power voltage specifications on the decal on the rear of your power supply Refer to section 3 4 2 Installation for instructions on how to check this Turn the power on by pressing the switch at the rear The power supply performs a series of self tests that last about 5 seconds Normal self test indications After the power supply has executed the self tests all characters and annunciators will be displayed followed by the message INITIALIZING At the end of the self tests the supply is in the standby mode STANDBY displayed or in the operate mode actual volta
91. ss you are qualified to do so 1 2 SAFETY PRECAUTIONS For the correct and safe use of this instrument it is essential that both operating and service personnel follow generally accepted safety procedures in addition to the safety precautions specified in this manual Specific warning and caution statements where they apply will be found throughout the manual Where necessary the warning and caution statements and or symbols are marked on the instrument 1 3 CAUTION AND WARNING STATEMENTS CAUTION Is used to indicate correct operating or maintenance procedures order to prevent damage to or destruction of the equipment or other property WARNING Calls attention to a potential danger that requires correct procedures or practices to prevent personal injury 1 2 Users Manual 1 4 SYMBOLS Symbol Meaning of symbol See explanation in manual Earth Conformit Europ enne 1 5 IMPAIRED SAFETY Whenever it is likely that safety has been impaired the instrument must be turned off and disconnected from line power The matter should then be referred to qualified technicians Safety is likely to be impaired if for example the instrument does not output the expected power or shows visible damage Introduction to your PPS 2 1 2 INTRODUCTION 2 1 INTRODUCTION TO YOUR PROGRAMMABLE POWER SUPPLY The basic function of your programmable power supply PPS is to supply a predefined dc volt
92. through the load becomes 1A load Vset Rioag 6 100 0 6A The voltage across the load becomes 0 6A x 102 6V The output channel goes back into the CV mode Now the overvoltage protection trip level OVPset 7V is going to be exceeded This will activate the overvoltage protection circuitry so the output voltage and current will be reduced to zero Also the message OVERVOLTAGE will be displayed The overvoltage protection trip level becomes 9V The overvoltage protection circuitry is reset and the voltage across the load becomes 8V load Vset Rioad 8V 10Q 0 8A The output channel remains in the CV mode Using your Programmable Power Supply 5 17 Local control in CV or CC mode The voltage Vsercan be set using the V key and the numeric input keys Example Press the V key to start the voltage setting Press the keys 3 dot 4 and ENTER to enter the setting of 3 4V The current Iset can be set using the key and the numeric input keys Example Press the key to start the current setting Press the keys 0 dot 2 3 and ENTER to enter the setting of 0 23A The overvoltage protection level can be set using the key and the numeric input keys Example Press the OVP key to initiate the overvoltage setting Press the keys 7 and ENTER to enter the overvoltage setting of 7V The overcurrent protection can be enabled disabled using the key Example Press the
93. tion 4 4 1 Check that the CC annunciator is on indicating that the output channel is in the Constant Current mode Set the current of the selected output channel to 0 5A by pressing The display shows ISET 0 5 A Enter the output current setting by pressing ENTER and check that the display reads approximately 0 5A Enable the overcurrent protection circuit OCP by pressing The display shows n OVERCURRENT The OCP EN annunciator is on indicating that overcurrent protection is enabled The CC annunciator should be off Getting Familair with the Power Supply 4 11 9 Disable the overcurrent protection and reset the output channel by pressing OCP EN OcPpis RESET Check that the display reads approximately 0 5A Also check that the CC annunciator is on indicating that the output channel is in the Constant Current mode again 10 Turn off the power supply 11 Remove the jumper wire between the V oltage and V oltage output terminals and reattach the terminal block cover Using your Programmable Power Supply 5 1 5 USING YOUR PROGRAMMABLE POWER SUPPLY 5 1 INTRODUCTION This chapter contains functional information about using your programmable power supply PPS It covers basic information such as connecting a load to an output channel and more advanced information such as the following 1 Connecting loads in parallel to an output c
94. to 999 A recall memory address contains space for the voltage and current setting of all available output channels output channel 3 output channel 2 output channel 1 address 1 voltage 1 current 1 address 2 voltage 2 current 2 address 998 voltage 998 current 998 address 999 voltage 999 current 999 5 20 Users Manual At delivery the contents of all addresses are set to their minimum value When an address has been filled its contents can be recalled so that the settings become actual The actual settings can be updated in OPERATE and STANDBY modes but they are only active in the OPERATE mode When the power supply is in the STANDBY mode the actual settings will become active as soon as the OPERATE mode is entered Note remember which locations have been programmed and which have not keep a record such as the following of which locations have been used MEMORY OUTPUT CHANNEL 1 OUTPUT CHANNEL 2 ADDRESS VOLTAGE CURRENT VOLTAGE CURRENT 01 2 0 0 00 5 9 0 90 02 1 9 0 10 5 8 0 80 03 1 8 0 20 5 7 0 70 04 etc etc etc etc Local control store recall The voltage can be set using the V key and the numeric input keys The output voltage can be adjusted using the V in the OPERATE mode The current can be set using and the numeric input keys The output current be adjusted using the key
95. vice Request 5 2 6 SET Output ter Pada ee eer weet I Rb Ebr Pa eos 5 2 SMB Gable Set urnie A Er SE silmad Nx A 1 SMB Gonnectors osuere ERA UR Ra RW 2 2 Source Delinilioris 2 sae m done Uhr uA 2 8 Sa ems Li Eccc mer i cvi C 7 Stability el Sa eee au eee a 5 36 Standard Event status 2 6 Standby acetate MA tea habeat 2 4 Standby Mode 1 14 40244 avaja se i ek ees Se dns C 7 SLAM eoe ety ape 2 2 3 6 STATUS 94 2 8 Index 1 5 Status Byte 2 6 Status Handling Ea PP vatt eee ay A RE Ad 2 6 beer Le e MC HU See ee eo woe Reet 2 2 3 6 FUNCION iu nay oe erie 5 22 Stoppihg HT Dc emen A A eg 2 8 iun ed bab bee Gt Ee BAR G P totes 2 8 Store recall Front Panel Settings 2 6 Store recall 1 5 19 WICH at LASE th nein A he A ET 3 4 Synchronization 3 wid Aleve tek See Ro 2 6 System 2 8 Temperature
96. wer supply is done via the keypad The display is used for passing information to the operator such as response information for the operator e g ADDRESS 12 readback information e g an output voltage and current Status information e g display of the REM text error messages e g the OVERCURRENT message Display Single front panel 2811 only Display Single dual and triple output front panel Introduction to your PPS 2 3 REAR PANEL The rear panel contains connectors for the line power input the output channel s the trigger lines and the GPIB IEEE 488 interface A fan provides forced cooling of each output channel The line power input module also contains the line fuses line filter and the power switch For remote control a GPIB IEEE 488 connector for use with a GPIB controller is provided Three SMB connectors for START STEP and READY are provided for external triggering of the step mode and recalling stored instrument settings ull S 5 El 9 9900 p rae s Jp 699 Single rear panel 2811 only
97. with other 19 units PM9280 03 Service Manual PM2811 12 13 4822 872 85005 e Service manual PM2831 32 4822 872 85004 Standard Commands for Programmable Instruments 4822 872 80194 SCPI Conformance Information B 1 APPENDIX B SCPI CONFORMANCE INFORMATION This instrument complies to the SCPI standard version 1993 0 The following classes of commands and queries have been implemented B 1 IEEE 488 2 1987 CLS ESE ESE ESR IDN OPC OPC PSC PSC RCL RST SAV SRE SRE STB TRG TST WAI B 2 SCPI Std 1993 0 Confirmed ABORT CALIBRATION STATE CALIBRATION STATE CALIBRATION VALUE CALIBRATION AUTO DISPLAY ENABLE DISPLAY ENABLE DISPLAY CONTRAST DISPLAY CONTRAST Users Manual DISPLAY WINDOW TEXT DATA DISPLAY WINDOW TEXT DATA INITIATE IMMEDIATE INITIATE CONTINUOUS INITIATE CONTINUOUS INSTRUMENT SELECT INSTRUMENT SELECT INSTRUMENT NSELECT INSTRUMENT NSELECT INSTRUMENT DEFINE INSTRUMENT DEFINE INSTRUMENT DELETE NAME INSTRUMENT DELETE ALL INSTRUMENT CATALOG INSTRUMENT STATE INSTRUMENT STATE MEASURE SCALAR VOLTAGE DC MEASURE SCALAR CURRENT DC OUTPUT STATE OUTPUT STATE OUTPUT PROTECTION TRIPPED OUTPUT PROTECTION CLEAR SOURCE CURRENT LEVEL IMMEDIATE AMPLITUDE SOURCE CURRENT LEVEL IMMEDIATE AMPLITUDE SOURCE CURRENT LIMIT HIGH SOURCE CURRENT LIMIT LOW SOURCE CURRENT PROTECTION TRIPPED SOURCE CURRENT PROTECTION

Philips PM2813 User's Manual

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