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ML1800 Se ML1800 Series User Manual 1800

1. CONDITION PTR NTR EVEN ENABLE 1 1 1 1 by FORES 2 2 2 L CHANNEL SUMMARY op 2 4 4 4 4 EVEN ENABLE rv 3 8 8 8 8 H CHAN 1 16 16 16 16 CHAN 2 2 2 NU 5 15 9 CHAN3 2 4 4 8 CHAN4 3 8 8 CHANS 41 16 16 gt 3 6 5 32 32 EROM QUESTIONABLE STATUS FROM CHAN 2 CONDITION PTR NTR EVEN ENABLE e muon HEL a GILT ES ET Ly o ov 2 2 2 2 FROM 5 gt 2 ONDE a i Rd FROM CHAN 6 gt nv 3 8 E 8 21 8 4 16 16 16 16 gt o NU 5 15 5 SERVICE OUTPUT QUEUE REQUEST STANDARD EVENT STATUS UTPUT QUEL bx ne DATA EVEN ENABLE DATA N U 0 1 0 DATA 2d 1 CSUM 23 4 als DH ae 3 g 8 S 4 gt 16 gt 16 gt 2 4 9 5 3 32 E 16 16 55 6 5 N 64 4 32 32 gt 3 7 8 SERVICE REQUEST LOGIC Figure 8 1 Status register of electronic load 8 2 1 Channel Status Figure 8 1 Channel Status register of electronic load Mnemonic Bit Value Meaning
2. NG GO 1 NG GO 2 NG GO 3 NG GO 4 NG GO5 NG GO 6 GND Figure 4 5 Load control connection terminal GO NG Output Port NG GO EN DIGITAL I O The use of TTL level indicates specification test results of each channel are Pass Fail Functions of NG GO terminal are as table 4 5 Figure 4 5 NG GO port function definition Pin Corresponding Description Name Channel NG GO 1 1 High level Pass Low level Fail NG GO 2 2 High level Pass Low level Fail NG GO 3 3 High level Pass Low level Fail NG GO 4 4 High level Pass Low level Fail NG GO 5 5 High level Pass Low level Fail NG GO6 6 High level Pass Low level Fail NG GO Enable Low level Specification check off High EN level Specification check on GND Ground NG GO public place In steady state if specification check is off please refer to the manual section 4 7 53 Intepro Systems ML1800 User Manual the NG GO enable NG GO EN port outputs low level while the other channels output high level if specification check is on the NG GO enable NG GO EN port outputs high level and the output voltage level of the corresponding channel is up to check result When the program runs the output level of corresponding channel is determined by the result of step test DIGITAL I O Port DI
3. Type All channels Description The shielding part of the site in Event register can be alternative and allowed to be summarized into QUES site of Status Byte register Syntax STATus QUEStionable ENABle Parameter Bit Site of Questionable Status Register 15 14 13 12 11 10 9 s 7 6 5 4 ls 1 Status 0 o 0 0 0 fo o 0 TE RV PE VE Site 16 8 4 2 STAT QUES ENAB 24 Query Syntax STATus QUEStionable ENABle Return Parameter Query Example Return Example lt NR1 gt STAT QUES ENAB Return the setup of Status Questionable Enable register 24 STATus QUEStionable EVENt Type Description Questionable Query Syntax Return Parameter Query Example Return Example All channels After reading the registers last time record all the status STATus QUEStionable EVENt lt NR1 gt STAT QUES EVEN Return the content of Questionable Event register 24 STATus QUEStionable PTRansition NTRansition Type Description Syntax Parameter All channels Programmable filter can decide the conversion type Condition register 0 to1 or 1to 0 and set up the Event register s corresponding bits STATus QUEStionable PTRansition NTRansition lt NR1 gt 0 65535 102 Intepro Systems ML1800 User Manual Example STAT QUES PTR 4 Setting up over power over power bit 2 to be from 0 to 1 STAT QUES NTR 4 Setting up over p
4. 0 025 50ms Res 5ys 0 025 50ms Res 5us 0 025 50ms Res 5us 0 025 50ms Res 5us Ti amp T2 0 1 500ms Res 25yus 0 1 500ms Res 25us 0 1 500ms Res 25us 0 1 500ms Res 25us 10 50s Res 2 5ms 10 50s Res 2 5ms 10 50s Res 2 5ms 10 50s Res 2 5ms Accuracy 1 5 1 5 100 1us 1ms 100ppm 1 5 1 5 100 105 1 5 100 Slew Rate 127 Intepro Systems ML1800 User Manual Current 0 6A 0 60A 0 1A 0 10A 0 12A 0 120A 0 2A 0 20A Range 1 25mA us 0 01 2 5A us 0 16 40mA us 1 6 400mA us 2 50mA us 0 02 5A us 0 32 80mA us 3 2 800mA us PANSA 0 001A us 0 01A us 0 16mA us 1 6mA us 0 002A us 0 02A us 0 32mA us 3 2mA us Accuracy 1435 xsetting value Measurement Voltage Measurement Range 0 16V 0 80V 0 50V 0 500V 0 16V 0 80V 0 50V 0 500V Resolution 0 2 1 10mV 0 2 1mV 10mV Accuracy 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S Current Measurement Range 0 6 0 60A 0 1A 0 10A 0 12A 0 120A 0 2A 0 20A Resolution 0 1mA 1mA 0 02mA 0 2mA 0 2mA 2mA 0 04mA 0 4mA Accuracy 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S Power Measurement Range 0 300W 0 300W 0 600W 0 600W Resolution 5mW 5mW 10mW 10mw Accuracy 1 0 5 F S 1 0 5 F S 1 0 5 F S 1 0 5 F S Short Circuit Feature Current CC 6A 60A 1 10A 512A
5. SUR E NORTE NER 84 MODE SUDSISIBITI 87 PROGRAM Subsystem a 88 HESISTANGE SUDS YI SM t abro erai doe laca aede has poa eye hd sa A a vU Ru 93 RUN SUS YI MA o E RF E cu E DM NEU 95 SPECIFICATION S DSVSIGBITI tripode t rae uan beet oet 95 STATUS SUbSVSIGHH pereo 99 VOLTAGE S bsyStemM cie rro ned 103 System COMMAS 105 POWER SUBSY SIG IM a 109 LSE De SI Sy SUS taal al 111 OGP SUDSVSIOITI KAKA P apo ME dU EUER 112 8 Status UE MEM Ha 117 8 1 Introduction CHIMIE 117 8 2 Channel Register 117 8 2 Channel Status ED ERU tutta 118 8 2 2 Channel SU iet V saecu odo ate emt ae utes b pen toli dta eu eds 119 8 2 3 Questionable Status ccc ccccsscsecsscsecssecssesecesecseseesssecseeceessecsaecseseesaeeaeeeeees 119 8 3 Output QUGue ite esi ai d e ette cecil atelier te cess 120 8 4 Standard Event Status 120 8 5 Status Byte Reglster uote Dre Dre 121 8 6 Service Request Enable 121 9 Practical Exambple nior rh
6. VOLTage CURRent SPECification RBWHat Type Specified channel Description Setting up examination content of specification Syntax SPECification RBW Hat Parameter Effective number range refer to individual specification Example SPEC RBWH lt NR1 gt Query Syntax SPECification RBW Hat Query Example SPEC RBWH Return Parameter lt 1 gt Return Example 0 0 current 1 voltage 2 power SPECification PASS VOLTage Type Specified channel Description Request GO NG result please refer to voltage specification Query Syntax SPECification VOLTage Query Example SPEC VOLT Return voltage GO NG result to CC and CR mode Return Parameter lt NR1 gt Return Example 0 NG 1 GO SPECification PASS CURRent Type Specified channel Description Request GO NG result please refer to current specification 96 Intepro Systems ML1800 User Manual Query Syntax Query Example Return Parameter Return Example SPECification CURRent SPEC CURR Return current GO NGresult to CV mode lt NR1 gt 0 NG 1 GO SPECification PASS POWer Type Description Query Syntax Query Example Return Parameter Return Example SPECification Type Description Query Syntax Query Example Return Parameter Return Example Specified channel Request GO NG result please refer to power specification SPECification POWer SPEC POW Return power GO NG resul
7. co oen tpud tia da Edi 122 9 lIntroduction zitiert eot eei ttt tie ett te i ete 125 92 Error Message Check ERR RE T CRINE 125 TTE 126 Supplementary Characteristic c cccccccccccssssssecececeesesecssaeeececeseeseaeseeeeecesseseaeseeeeseesseseaees 126 Main Technical Parameters e edet 127 VI Intepro Systems ML1800 User Manual 1 Overview This manual mainly includes the specification installation and use instruction etc of ML1800 series multiple channel electronic load 1 1 Introduction ML1800 series is the newly developed high end multiple programmable DC electronic loads This series load offers powerful test functions and friend user interface The ML1800 series loads can be applied to the test for DC power supply battery charger and other related devices which can offer many solutions for your design and testing This series product include ML1800 chassis 4 models of module such as 66103A 300W 66105A 300W 66106A 600W 66108A 600W The load chassis is designed with open bays to easily receive a maximum of 6 load modules which is very applicable for configuring power supply test platform and is cost efficient The ML1800 series offers powerful functions excellent performance and good stability with an elaborate design that is perfect for your needs Unless otherwise noted this manual describes the operation FT66100 series electronic loads
8. OCP SPECification L MIN 1 5 OCP SPECification H Specified channel Setting up the upper limit of test specification in OCP mode OCP SPECification H lt NR2 gt Effective number range refer to individual specification OCP SPECification H 2 8 Setting up the upper limit to be 2 8A OCP SPECification H MAX Setting up the upper limit to be the maximum value OCP SPECification H MIN to be the minimum value OCP SPECification H MAX MIN gt lt 2 gt unit Amp OCP SPECification H OCP SPECification H MAX OCP SPECification H MIN 2 8 Setting up the upper limit Specified channel Return test result in OCP mode None None None OCP RESult When 1 is returned it represents OCP test stops 2 represents OCP test is ready to execute wait for Von or other conditions 3 represents OCP test is executed lt arg1 gt lt arg2 gt lt argi gt Pass Fail lt 1 gt 0 PASS 1 lt arg2 gt OCP current lt NR2 gt unit Amp OCP RES FAIL unit 2 none 116 Intepro Systems ML1800 User Manual 8 Status System 8 1 Introduction This chapter describes the status data structure of Intepro ML1800 series electronic load as Figure 8 1 shows Standard register such as Event Status register the output queue status byte and service request start register to implement the standard GPIB function and define programmable instrumentation with IEEE 488 2 standard digital interface Other status regi
9. 1 3 Chassis ML1800 main box operates six modules installed each module takes 1 to 2 installation positions The size of the installation position is associated with a specific module Specification of Chassis is as Table 1 1 Table 1 1 chassis specification Part Number ML1800 Module installation position 6 from the bottom Power all modules installed 1800W Communication interface RS232 GPIB optional Module options FT66103A FT66105A Power voltage 220V AC 50Hz weight 16kg size 570 D x 433 W x190 H Operation temperature 0 C 40 C Operation environment Indoor operation and design maximum humidity 90 Intepro Systems ML1800 User Manual 1 4 Panel Introduction 1 4 1 Front Panel Introduction RO SYSTEMS FT66100A Series Programmable Electronic Load ja Figure 1 1 Front Panel of Electronic Load 1 Power switch 2 Display 3 Numeric keypad 4 Rotary knob 5 Function keys 1 4 2 Rear Panel Introduction Figure 1 2 Rear Panel of Electronic Load 1 SENSE input interface positive and negative polarity 2 Load input interface positive and negative polarity Intepro Systems ML1800
10. Query Example CHANnel ID Type Description Query Syntax Return Parameter Query Example Return Example CHAN SYNC lt NR1 gt CHAN SYNC Return to load module and receive synchronous instruction status 0 Load module can not receive synchronous instruction status 1 Load module receives synchronous instruction status Specified channel This query requests module self identification ID aard CHAN ID String Description Intepro Manufacturer FT6610xA Model 0 Always return zero XX XX The main revision 2011 11 23 Revision date Intepro FT66103A 0 01 00 2011 11 23 CONFIGURE Subsystem 71 Intepro Systems Manual CONFigure ML1800 User L woLrase se lt NRf gt suffix d lt NR2 gt VLA H RANGe se lt NRf gt suffix H L 2 NR se OFF o auro Load se ON OFF O 2 LY MODE gt LOADA PROGRAWI O gt gt lt NRt gt wy se ON OFF O TIMin
11. chassis means 66100A chassis Module means 66103A 66105A 66106A and 66108A electronic load 1 2 Main Features Main features of ML1800series electronic load are as below e Constant Current CC Constant Voltage CV Constant Resistance CR Constant Power CP and LED mode e Upto 20KHz transient test speed rise and fall slew rate can be set and support user to change data online e OVP OCP OPP OTP and Reverse Polarity protection e Two remote interfaces GPIB and RS232 e 16bit ADC measurement e Short circuit simulation allows double power when short circuit e OCP test function e Special useful battery CV charging function e Programmable on current and power limit e Save call 100 groups of data support fast call for the first 10 groups Intepro Systems ML1800 User Manual e 10 groups of program can be linked for automated test so that the production efficiency can be raised e TFT LCD color display wise view angle high brightness e Simplified Chinese traditional Chinese and English are available e Rotary knob and numeric keypad make the operation fast and flexible e Voltage polarity display can be set to positive value or negative value e GO NG auto test function to test if the device under test meet the specification e Rich SCPI commands facilitate to configure intellectualizing test platform and secondary development e Intelligent fan control saving power and lowering noise
12. Description Setting the rise and fall slew rate of CC mode the host sets in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax n n n n n n Parameter lt NR2 gt unit A us Example CCSR 1 0 2 5 2 5 10 2 0 5 0 107 Intepro Systems ML1800 User Manual CRSR Type Description Syntax Parameter Example CDL1 Type Description Syntax Parameter Example CDL2 Type Description Syntax Parameter Example CDT1 Type Description Syntax Parameter Example CDT2 Type Description All channels Setting up the rise and fall slew rate of CR mode the host sets in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup n n n n n lt NR2 gt unit A us 1 0 2 5 2 5 10 2 0 5 0 All channels Setting up the current main value 1 L1 of CCDL CCDH mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup CDL1 n n n n n n lt NR2 gt unit ZAmp CDL1 1 0 1 2 5 5 0 10 5 4 5 All channels Setting up the of current main value 2 L2 of CCDL CCDH mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup CDL2 n n n n n n lt NR2 gt unit ZAmp CDL2 1 0 1 2 5 5 0 10 5 4 5 All channels Setting up the enable time T1 of current main value 1 L1 of CCDL CCDH mode in the 6
13. Description of all three registers please see Chapter eighth Status System Syntax ESE lt NR1 gt Parameter 0 to 255 Example 5 48 This command starts the CME and EXE events of Standard Event Status register Query syntax Return Parameter lt 1 gt Query example The current of return to Standard Event Status Enable is set ESR ESR Standard Event Status Register Query Type Device status Description This query reads Standard Event Status register Cleared after reading register The detailed description of this register please see Chapter eighth Status System Standard Event Status register Bit Site 7 6 5 4 3 2 Condition 0 0 CME EXE DDE QYE Site 128 64 32 16 8 4 Query syntax 5 Return Parameter lt 1 gt Query example ESR Return the status reading value of Standard Event Status register Return example IDN IDN Type Description This query requests self identification of the host of electronic load host Recognition Query 48 System interface 66 Intepro Systems ML1800 User Manual Query Syntax IDN Return Parameter lt aard gt Query example Return string description Intepro manufacturer ML1800 model 0 always returns zero 01 00 rev level Return example Intepro ML1800 0 01 01 OPC OPC Operating Commands Type Device status Description When the electr
14. and it must be short and thick to ensure the DC voltage drop is not more than 0 5V when the load is drawing current Warning To meet the load requirements of higher performance and slope the inductance of the wire between the equipment under test and load must be less than 5 0uh 2 6 2 Sampling Connection The load has two voltage measurement modes which are remote sampling and local sampling Sampling mode can be selected from voltage sampling for switch option under system settings menu e local sampling When the load is light local sampling modes is available for input voltage measurements e remote sampling When the load works the input current will produce a certain voltage drop on the contact resistance of connection wires and port and wire which will affect the accuracy of load voltage measurement When the load is on the CV CR and CP function and need accurate measurement remote sampling mode is recommended Remote sampling terminal and SENSE need to be directly connected to the voltage output of the equipment under test for remote sampling Line connection as shown in Figure 2 4 11 Intepro Systems ML1800 User Manual DC Power Supply Figure 2 4 remote sampling line connection 2 6 3 Parallel Connection When the power or current of the power supply under test exceeds the specification of the electronic load 2 or more electronic loads input can be paralleled to increase the curren
15. symbol OC 0 1 Over current When over current occurs in the channel set up bit 0 and save the setting until over current is removed and programming LOAD PROT CLE OV 1 2 Over voltage When over voltage occurs in the channel set up bit 1 and save the setting until over voltage is removed and programming LOAD PROT CLE OP 2 4 Over power When over power occurs in the channel set up bit 2 and save the setting until over power is removed and programming LOAD PROT CLE RV 3 8 Reverse voltage input When reverse voltage is applied in the 118 Intepro Systems ML1800 User Manual channel set up bit 3 Save the setting until reverse voltage is removed and programming LOAD PROT CLE OT 4 16 Over temperature When over temperature occurs in the channel set up bit 4 and turn off the channel Save the setting until complete cooling lower than over temperature dividing point and programming LOAD PROT CLE e Channel Status register provide you one or more channel status condition pointing out some fault or error in specific channel Figure 8 1 describes the channel status condition applied to electronic load e When setting up bits of Channel Status Condition register corresponding conditions are true e Programming PTR NTR filters to select which kind of conversion way of bit condition in Channel Status Condition register and will set up the corresponding bit in Event register The reading of Channel Status Even
16. to be 3A VOLT CURR MAX During CV mode current limit to be maximum value VOLT CURR MIN During CV mode current limit to be minimum value VOLTage CURRent lt NR2 gt unit Amp VOLT CURR 3 setting up load setting up load Specified channel Setting up the response rate in CV mode VOLTage MODE FAST VOLTage MODE MEDIUM VOLTage MODE SLOW FAST 2 MEDIUM 1 SLOW 0 VOLT MODE FAST VOLT MODE SLOW VOLTage MODE lt NR1 gt 104 Intepro Systems ML1800 User Manual Query Example VOLT MODE Return Example 0 System Commands AC AR AV Type Description Syntax Parameter Example Type Description Syntax Parameter Example Type Description Syntax Parameter Example Type Description Syntax Parameter All channels Setting up the load mode to be one mainframe with 6 channels If channel does not exist then the mainframe will ignore the setup M n n n n n n 0 nochange 1 CCL 2 CCH 3 CCDL 4 CCDH 5 CRL 6 CRH 7 CVH 8 CVL 9 CPH 10 LEDL 11 LEDH M 1 1 2 2 2 2 M 2 2 2 2 2 2 All channels Setting up the main value 1 L1 of the current in CC mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup AC n n n n n n lt 2 gt unit Amp 1 0 1 2 5 5 0 10 5 4 5 All channels Setting up the main value 1 L1 of the resistance in CR mode in the 6 channel mainframe If the channel does not
17. 2 1 Site 128 64 32 16 8 4 2 1 Example PROG ACT 12 Query Syntax PROGram ACTive Return Parameter lt 1 gt Query Example PROG ACT Return Example 12 91 Intepro Systems ML1800 User Manual PROGram CHAin Type Depends on program file Description Setting up the type of program file with continuous execution Syntax PROGram CHAin lt NRf gt Parameter 0 10 0 is dis continuous Example PROG CHA 7 Query Syntax PROGram CHAin Return Parameter lt NR1 gt Query Example PROG CHA Return Example 7 PROGram ONTime Type Depends on program file Description Setting up the load on time of program file default unit is s Syntax PROGram ONTime lt NRf gt Parameter Effective number range refer to individual specification Example PROG ONT 10 PROG ONT 100ms Query Syntax PROGram ONTime Return Parameter NR2 unit s Query Example PROG ONT Return Example 10 5 PROGram OFFTime Type Depends on program file Description Setting up the load off time of program file default unit is s Syntax PROGram OFFTime lt NRf gt Parameter Effective number range refer to individual specification Example PROG OFFT 20 PROG OFFT 200ms Query Syntax PROGram OFFTime Return Parameter lt 2 gt unit s Query Example PROG OFFT Return Example 0 2 PROGram PFDTime Type Depends on program file Description Setting up the delay time of good bad products in program file Syntax PROGra
18. CONF VOLT LATC ON Set functions and classification of Von to be latch CONF VOLT LATC OFF Set functions and classification of Von to be non latch detailed functions please refer to user manual Query Syntax CONFigure VOLTage LATCh 73 Intepro Systems ML1800 User Manual Return Parameter lt NR1 gt Query Example CONF VOLT LATC Return Example 0 non latch 1 latch Return functions and classification of Von Von CONFigure AUTO LOAD Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example All channels Set whether the load module will perform automatic load conduction during boot CONFigure AUTO LOAD ON CONFigure AUTO LOAD OFF 1 0 CONF AUTO LOAD ON During boot turn on the automatic load conduction CONF AUTO LOAD OFF During boot turn off the automatic load conduction CONFigure AUTO LOAD lt NR1 gt CONF AUTO LOAD 0 or 1 Return status of the automatic load conduction CONFigure AUTO MODE Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example All channels Set the automatic load conduction to be LOAD ON or PROGRAM RUN CONFigure AUTO MODE LOAD CONFigure AUTO MODE PROGRAM LOAD 1 PROGRAM 0 CONF AUTO MODE LOAD Set the automatic load conduction to be normally LOAD ON CONF AUTO MODE PROGR Set the automatic load conduction to be P
19. Manual STATus CSUMmary ENABle Type All channels Description The shielding part of the site in Event register can be alternative and allowed to be summarized into CSUM site of Status Byte register Syntax STATus CSUMmary ENABle Parameter Site Configuration of Channel Summary register Bit Site 4 3 2 1 0 5 4 3 2 1 Site 32 16 8 4 2 1 Example STAT CSUM ENAB 3 Query Syntax STATus CSUMmary ENABle Return Parameter Query Example Return Example lt NR1 gt STAT CSUM ENAB Return the setup of Channel Summary Enable register 3 STATus CSUMmary EVENt Type All channels Description After reading the registers last time point out all channels in the startup STAT CHAN event Parameter Site Configuration of Channel Summary register Bit Site 4 3 2 1 0 5 4 3 2 1 Site 32 16 8 4 2 1 Query Syntax STATus CSUMmary EVENt Return Parameter Query Example Return Parameter lt NR1 gt STAT CSUM EVEN Return the value of Channel Summary register 3 STATus QUEStionable CONDition Type Description Query Syntax All channels Real time live record Questionable data STATus QUEStionable CONDition 101 Intepro Systems ML1800 User Manual Return Parameter Query Example Return Example lt NR1 gt STAT QUES COND Return channel status 6 STATus QUEStionable ENABle
20. Von latch is on or off Von Latch On Von I Figure 4 3 Current waveform when Von Latch 47 Intepro Systems ML1800 User Manual Figure 4 4 Current waveform when Von Latch On 9 Setting Unload Enable Load On on means the measured voltage of UUT is lower than the unload voltage the load stops loading Load On off means the unload voltage does not represent any function The default value is off Load On Off 10 Setting Unload Voltage Unload Enable is set to be on Load Voltage and Load Latch must be set first Load voltage must be greater than the unload voltage and load latch must be opened so that the unloading voltage effects When the voltage is lower than the unload voltage load stop loading Figure 4 5 shows the waveform of the setting load and unloading voltage Voff Point 15 00 V Figure 4 4 Set load current waveform of Von and Voff 48 Intepro Systems ML1800 User Manual 11 Setting Load On When Load On is on the module will operate in correspondence with the setting of Load On when the host is turned on The default setting is off Load On Off 12 Setting Load On Mode Load On Mode is set to be Mode the module will operate in the latest setup mode when the host is turned on If it is set to be PROG the module will operate program 1 Load On Mode Mode 13 Setting Load Time For time settin
21. channel mainframe If the channel does not exist the mainframe will ignore the setup CDT1 n n n n n n lt NR2 gt unit s CDT1 1 0 1 2 5 5 0 10 5 4 5 All channels Setting the enable time T2 of current main value 2 L2 of CCDL CCDH mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup 108 Intepro Systems ML1800 User Manual Syntax CDT2_n n n n n n Parameter lt NR2 gt unit s Example CDT2 1 0 1 2 5 5 0 10 5 4 5 CDR Type All channels Description Setting rise slew rate of CCDL CCDH mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax CDR n n n n n Parameter lt NR2 gt unit A us Example 1 0 2 5 2 5 10 2 0 5 0 CDF Type All channels Description Setting fall slew rate of CCDL CCDH mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax CDF n n n n n Parameter lt NR2 gt unit A us Example 1 0 2 5 2 5 10 2 0 5 0 Type All channels Description Setting load principal value according to the mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax L n n n n n n Parameter lt NR2 gt unit ZAmp CCL CCH unit2OHM CRL CRH unit Volt CV Example 1 0 2 5 2 5 10 2 0 5 0 ERR Type All channels Description For querying errors of electronic load generates in the process
22. exist the mainframe will ignore the setup AR n n n n n n lt 2 gt unit ZOHM AR 1 0 0 1 0 2 0 5 0 15 0 4 All channels Setting up the main value1 L1 of the voltage in CV mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup AM n n n n n n lt 2 gt unit Volt 105 Intepro Systems ML1800 User Manual Example CCR Type Description Syntax Parameter Example CCF Type Description Syntax Parameter Example CRR Type Description Syntax Parameter Example CRF Type Description Syntax Parameter Example LAT Type Description Syntax Parameter Example AV 5 0 5 5 3 3 5 1 12 0 5 5 All channels Setting up the rise slew rate in CC mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup n n n n n n lt 2 gt unit A us 1 0 2 5 2 5 1 2 0 1 All channels Setting up the fall slew rate in CC mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup CCF n n n n n n lt 2 gt unit A us CCF 1 0 2 5 2 5 10 2 0 5 0 All channels Setting up the rise slew rate in CR mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup n n n n n n lt 2 gt unit A us 1 0 2 5 2 5 10 2 0 5 0 All channels Setting up th
23. full Error message can be read through the panel menu or programming commands Error is retrieved with FIFO sequence the first returned error is the earliest error occurred One of the error message will be deleted from the error queue after each reading If there is currently no error which means error queue is empty then when sending the query command the load returns information with 0 No error 9 2 Error Message Check In the remote control mode one error message in the queue can be read out and removed by executing the following commands ERR The message this command returns is string such as 101 Invalid character The error message shows that invalid characters exist in the command string electronic load received If all the error message has been read or no error occurs when reading error information executing ERR command will return information 0 No error This message shows no error or all error message has been removed 125 Specification Supplementary Characteristic AC power input 220V 10 50Hz Cooling Mode Air cooling Storage Environmental Temperature 0 to 60 C Operation Temperature 0 to 40 C Relationship between load power operating temperature as shown in Figure Cb ng 100 80 Relationship between load power and operating temperature 126 Intepro Systems ML1800 User Manual Main Technical Parameter Note Measurement acc
24. number is up to the installation position Module channel number closest to the motherboard is always 1 the other modules in accordance with the motherboard distance from near to far are numbered 2 to 6 The module which occupies two positions will still have only one channel number As Figure 2 2 shown The channel number of the first module is 1 The second module occupies two positions and channel number is 2 if installation continues the number is 3 Channel2 Channell Motherboard Figure 2 2 module channel number Intepro Systems ML1800 User Manual 2 3 3 Mainframe Installation The electronic load offers both workbench and rack mountable installation ways Please ensure there is 15cm space at least from the upper side and all around with other objects for air circulation For exact size of the chassis please refer to Figure Table 1 1 Workbench Installation Put the electronic load on the workbench than install the tripod to ensure there is enough vertical space between the chassis and the workbench for air circulation B Rack mountable Installation Electronic loads can be installed into 19 rack Please make sure there is at least 15cm space between the load and the other instrument which will be mounted above the load for adequate air circulation For installation frame package please contact an Intepro authorized sales agent 2 3 4 Input Connection A Warning To ensure the security and accu
25. sequence PROGram SEQuence lt NRf gt 1 to 10 PROG SEQ 3 PROGram SEQuence lt NR1 gt PROG SEQ 3 PROGram SEQuence MODE Depends on program file Setting up Sequence type PROGram SEQuence MODE SKIP PROGram SEQuence MODE AUTO PROGram SEQuence MODE MANUAL PROGram SEQuence MODE EXT SKIP AUTO MANUAL EXT PROG SEQ MODE SKIP PROG SEQ MODE AUTO PROG SEQ MODE MANUAL PROG SEQ MODE EXT PROGram SEQ MODE SKIP AUTO MANUAL EXT PROG SEQ MODE AUTO 90 Intepro Systems ML1800 User Manual PROGram SEQuence SHORt CHANnel Type Depends on program file Description Setting up the short channel of SEQuence in PROGRAM file Syntax PROGram SEQuence SHORt CHANnel lt NRf gt Parameter 0 255 Site mmn Example PROG SEQ SHOR CHAN 3 Query Syntax PROGram SEQuence SHORt CHANnel Return Parameter lt 1 gt Query Example PROG SEQ SHOR CHAN Return Example 3 PROGram SEQuence SHORt TIME Type Depends on program file Description Setting up short time of SEQuence in PROGRAM file default unit is s Syntax PROGram SEQuence SHOREt TIME lt NRf gt Parameter 0 60 0 Example PROG SEQ SHOR TIME 10 Query Syntax PROGram SE Quence SHORt TIME Return Parameter lt NR2 gt unit s Query Example PROG SEQ SHOR TIME Return Example 10 000 PROGram ACTive Type Depends on program file Description Select load module used Syntax PROGram ACTive lt NRf gt Parameter 0 255 Channel 8 7 6 5 4 3
26. short circuit state On Off Input switch Fi Composite keys gure 4 3 Composite function keys introduction Function Shift 1 Save Enter the save menu Shift 2 Prog Enter the program edit menu Shift 3 OCP Enter OCP menu Shift 4 Recall Enter recall menu Shift 5 Apply Enter application settings menu Shift 6 Config Enter system setup menu Shift 7 SPEC Enter specification check menu Shift 8 Lock Enter Exit the keyboard lock mode Shift 9 Local Return to the local control mode 4 2 Channel Selection Press CH1 to CH6 and select one channel for manual operation You can find 27 Intepro Systems ML1800 User Manual channel number at section 2 3 2 The host will scan the installed module and module type after boot If there are no modules installed in the mainframe Can not find any module will be shown on the display Edit channel setting you must first select the channel If the channel does not exist you can not operate 4 3 Setting up Operation Mode Press Mode to enter Mode menu Users can set the load working modes CC CV CR CP or LED mode 4 3 1 Constant Current Operation CC There are four levels for constant current CC operation e Static low range CCL e Static high range e Transient low range CCDL e Transient high range CCDH The following will demonstrate the constant current operation process Before the ope
27. the voltage to be 1 8V Query Syntax CONFigure VOFF FINALVOLTage Return Parameter lt NRf gt unit Volt Query Example CONFigure VOFF FINALVOLTage Return setting value of the end voltag Return Example 1 8 CONFigure DIGITalio Type Specified channel Description Setting On or Off of the DIGITal I O function Syntax CONFigure DIGITalio lt NR1 gt 75 Intepro Systems ML1800 User Manual Parameter ON 1 OFF 0 Example CONFigure DIGITalio ON Setting up DIGITal I O function to be on Query Syntax CONFigure DIGITalio Return Parameter lt NRi gt Query Example CONFigure DIGITalio Return DIGITal I O function to be on or off Return Example 1 Return Example 1 Respond to what kind of parameter setting CURRENT Subsystem 76 Intepro Systems ML1800 User Manual lt NR2 gt se MIN MIN lt NRf gt MIN ad 5 lt NRf gt suffix o se MAX MIN CURRent STATic L1 L2 Type Description Syntax Parameter Example Specified channel Setting the current of static load in CC mode CURRent STATic L1 NRf suffix CURRent STATic L2 lt NRf4 gt suffix Effective number range refer to module specification default unit is A CU
28. user RS232 GPIB optional Users can use a common microcomputer with the corresponding control lines to control the electronic load conveniently Note the above two kinds of communication interfaces can not be used at the same time users can only choose one The default selection is RS232 interface to be remote communication interface Remote Control Device microcomputer or other specialized equipment with relevant interface Figure 5 1 Communication interface of electronic load Communication Interface GPIB RS232 5 1 GPIB interface GPIB universal instrument interface bus is interface standard which is used to connect the computer and peripheral equipments and it supports the following international standards IEEE488 1 IEC 625 IEEE488 2 The GPIB interface allows the external Overview GPIB universal interface bus is used to connect computer and standard interfaces of peripheral units Asynchronous serial communication interface interface level is compatible with the RS232 specification computer to control the electronic load through GPIB bus 5 1 1 GPIB System Configuration If GPIB bus interface is used to connect electronic load you must first have a GPIB interface card Electronic load provides optional accessories of GPIB interface card If users use the GPIB interface card and related software provided by Intepro GPIB remote control system can be built on personal computer easily Fi
29. want to return to local control mode press Shift 9 or send commands CONFigure REMote OFF 59 Intepro Systems ML1800 User Manual 6 Programming Commands Overview 6 1 Introduction to Programming Commands Command of electronic load includes two types IEEE488 2 public command and SCPI command equipment related IEEE 488 2 public commands defines some control and query commands which are universal to instruments Public commands allow the basic operation of the electronic load such as reset state query All the IEEE 488 2 public commands consist of and three letter mnemonics such as RST IDN ESE IEEE 488 2 The SCPI command realizes the function of the electronic load such as most of the tests setting calibration and measurement etc This type of command is in command tree form Each command can contain multiple mnemonics each node of command tree is separated with the characters separation as shown in figure 6 1 shown Top of command tree ROOT is called root The whole route from the root to the nodes is one complete programming command ROOT m ESTATE c PROTectin gt CLEar o INPut p SHR gt STATE gt MODE gt FUNCtion Figure 6 1 Command tree example 6 2 Command Definition The GPIB statement includes the instrument control and the query commands Comma
30. working curve is shown in Figure 3 10 18 Intepro Systems ML1800 User Manual Load Current Input Voltage V Figure 3 10 CC to CV CC to CV mode has two ranges CCL To CV and CCH To CV 3 3 4 Constant Resistance to Constant Voltage Mode CR To CV Constant resistance to constant voltage mode can make the battery discharge more The working curve is shown in Figure 3 11 Load Current Input Voltage V Figure 3 11 CR to CV CR to CV mode has two ranges CRL To CV and CRH To CV 3 4 Programming Function Under programming mode load executes many test items on the equipment according to the file After the test Pass or Fail will be displayed for test result The advantage of programming mode is particularly evident in the product inspection which can significantly improve the efficiency of product inspection Load can store up to 10 programs each program contains 10 series a total of 100 archives If a single program sequence is not enough to test the UUT program chain function can help get more sequence for test 19 Intepro Systems ML1800 User Manual 3 5 OCP Function The load provides rising slope current to test if the voltage of the UUT can reach the end potential in order to determine the normal OCP protection This test checks the output response of the UUT when it is overloaded 3 6 Load Synchronization FT66100 electronic load comprises a plurality of modules In the Systems Settings
31. 0 User Manual which questionable events Only when the corresponding bit is enabled Channel Questionable Event register will record corresponding questionable event Table 8 2 Bit description of questionable status Mnemonic Bit Value Meaning symbol CE OC 0 1 Current error OV 1 2 Over voltage PE OP 2 4 Power error voltage RV 3 8 Input reverse TE OT 4 16 Temperature error 8 3 Output Queue e Output queue store output message until reading from electronic load e Output queue store output message in FIFO sequence e When there is data in the queue bit 4 MAV bit is set in status byte register 8 4 Standard Event Status e All programming errors will set one or more error bits the standard event status register Table 8 3describes standard events applied in electronic load e Read the value of standard event status register the data will be reset e Standard Event Enable is used to control standard events electronic load records Table 8 3 Bit description of standard event status Mnemonic Bit Value Meaning symbol OPC 0 1 Finish operation Generation of this event bit is to respond to DPC command Point out that the device has completed all the selected pending operation QYE 2 4 Query error When no data or the data in the queue is lost reading the output queue DDE 3 8 Subject to device error memory lost or self test error EXE 4 16 Execution error Command p
32. 0W 2 500 A us Slew MN 0 0000 V 0 0000 V 2 500 A us 0 0000 A 0 0000 A 0 0000 w 0 0000 w CCL CCL Figure 2 3 Load Monitor Interface If the monitoring interface prompt LOST it means the calibration data is lost If the load does not start the following methods can help you find the possible problems 1 Check if the power line is connected 2 Checkif the power line is connected and the power switch is turned on 3 Check if the fuse of the load is burnt If fuse is burnt please replace it Please open the small plastic cover which is on the rear panel of the load and on the left side of the power source socket than replace the fuse The fuse position is as Figure 1 1 shown More information Please contact the Intepro technical support department 2 6 Connections 2 6 1 Input Connection 10 Intepro Systems ML1800 User Manual ZA warning To meet the safety requirements electronic load line must be sufficient to withstand the maximum short circuit current connecting to other devices but do not produce overheat phenomenon The DC load input connection is made by the and on the real panel of the load and the equipment under test With the input connection attention must be paid on diameter length and polarity of input connection wire Wire diameter that is too small can affect the test precision and excessive heat may cause a safety hazard Copper line is normally used for connection line
33. 120 2 20 Voltage CV OV OV OV OV Other Features Temperature Drift 100ppm C typical value 100ppm C typical value 100ppm C typical value 100ppm C typical value Weight 2 7Kg 2 7Kg 5 5Kg 5 5Kg NOTE 1 If the operation voltage is 1 1 times of the full range the load will be damaged NOTE 2 Vin gt 6V is required for nominal accuracy NOTE 3 When CR mode if lt 0 5 F S accuracy will not be specified 128
34. 2 5 set up L1 current CCL to be 2 5A txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NLend strcpy txBuffer LOAD ON start loading txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NLend Sleep 500 strcpy txBuffer MEASure VOLTage measured voltage value txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength DABend Receive GPIB_BoardID GPIB_ADDRESS rxBuffer BUFFERSIZE STOPend rxBuffer ibcntl 0 123 Intepro Systems ML1800 User Manual printf Receive lt s n rxBuffer strcpy txBuffer MEASure CURRent n measured current value txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NULLend Receive GPIB_BoardID GPIB_ADDRESS rxBuffer BUFFERSIZE STOPend rxBuffer ibcntl 0 printf Receive lt s n rxBuffer strcpy txBuffer LOAD OFF unload txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NLend ibonl GPIB_BoardlD 0 getchar return 0 124 Intepro Systems ML1800 User Manual Error Message 9 1 Introduction Any errors that occur in the working process of the load are recorded in the error queue until the queue is
35. 5 6 v Recall Apply Config 7 8 9 SPEC Lock Local Enter o lt Figure 4 1keypad of electronic load Electronic load keypad is divided into three areas numeric keypad function keypad knob The following are introduced in detail 4 1 1 Numeric Keypad Figure 4 1 Numeric keys introduction Key Function 0 through 9 are used for entering numeric values Decimal point Scrolling keys let you move through the commands in the present select function menu AY bring up the next command in the list On setting parameters these two keys are used to control the movement of a cursor among digital 26 Intepro Systems ML1800 User Manual Confirmation key is used to enter setup option Enter or confirm input and exit the settings Remove the set data 4 1 2 Function Keys Function keys compromise single function keys and composite function keys the introduction is as follows Figure 4 2 single function keys introduction Key Function CH1 CH6 Select channel need to be edited Mode Enter Mode Settings menu Synchronization key press this key all modules SYNC with sync enable on can do On Off Short and save in the recall synchronously Shift Second function switching key Esc Return to the previous menu A B Select steady state operation switch A B Short circuit key press this key will make all Short channels of the electronic load to enter
36. Each moves instructions down to the next branch Semicolon makes you connect instruction statement for a column return 63 Intepro Systems ML1800 User Manual instructions to a colon before For example Join the following two instruction statements RES RISE 100 nl and RES L1 400 nl makes synthetic instruction listed below RES RISE 100 L1 400 nl Return to the root order format you can 1 Enter a new line character with nl as the representative And LF for wrapping or and EOI for the end of the line Or 2 Follow colon then enter semicolon Please refer to the following 1 root order VOLT L1 30 lt gt Start a new line to return to the root order 2 root order SPEC VOLT H 30 6 5 root order RES L1 400 RISE 1000 6 5 Command Terminator The command terminator has newline characters ASCII characters LF the value is 10 and EOI only applicable to GPIB interface two formats At the end of the function of the terminator is to end the current command string and will reset the command path to the root path 7 Command Details 7 1 Public Commands Public commands are a general command IEEE 488 2 specification requires the instrument to support for general function control of instruments such as reset status query its syntax and semantics follow the IEEE 488 2 protocol specification IEEE 488 2 public commands are without hierarchy each command has a first s
37. Effective number range refer to individual specification SPEC POW H lt NRf gt suffix SPEC POW L lt NRf gt suffix SPECification POW H SPECification POW L SPEC POW H NR2 unitz Volt 4 75 SPECification TEST Type Description Syntax Parameter Example Query Syntax Query Example Return Parameter Return Example Specified channel On or Off specification test SPECification TEST ON SPECificationS TEST OFF ON 1 OFF 0 SPEC TEST ON SPEC TEST OFF SPECification TEST SPEC TEST lt NR1 gt 1 98 Intepro Systems ML1800 User Manual STATUS Subsystem STATus CHANnel CSUMmary ENABle QUEStionable CONDition ENABle se 2 EVENE D NTRansition i PTRansition STATus CHANnel CONDition Type Specified channel Description Return status of real time channel Query Syntax STATus CHANnel CONDition Return Parameter lt NR1 gt Bit Site of Channel Status Register Bit Site 15 14 13 12 1 109 8 7 6 5 4 2 1 0 Status 0 0 0 JO O 0 0 0 OT RV OP OV Site 16 8 4 2 1 Query Example STAT CHAN COND Return status of the electronic load Return Example 2048 99 Intepro Systems ML1800 User Manual STATus CHANnel ENABle Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Exa
38. GITAL I O port function definition is as Figure 4 6 Figure 4 6 Function definition of DIGITAL I O terminal Port Function Remarks D1 Load On Off O P High level output at Load On High level at Load Off D2 Total Pass High level pulse signal output if test items all channels are passed D3 Total Fail CO P High level pulse signal output if test items of one or more channels are failed D4 Short Signal High level output when channel is short circuited otherwise low level output D5 Protection Signal O P Any protection happens at any channel high level output otherwise low level output D6 External Load On Off TTL input signal high gt 4 3V low lt 0 7V is used to control module to execute synchronous loading SYNC Run is set to On D7 External Trig I P This signal is used for test program Programs set to external trigger SEQ Mode is set to External when the program runs the input down signal of the pin is to control the execution of the sequence GND Ground This pin is the public place of DIGITAL I O 1 Load On Off Level This signal is the actual loading On Off signal When the main board is On output high level when the main board is Off output low level 54 Intepro Systems ML1800 User Manual Load ON OFF D1 Output ON orr 2 Total Pass O P Pulse This signal is used only in program testing If all tests a
39. INTEPRO SYSTEMS Intepro Systems ML1800 Series Multiple Channel Programmable DC Electronic Load User Manual All rights reserved Intepro Systems Version V1 00 2013 Introduction Dear User Thank you very much for choosing the Intepro Systems ML1800 series multiple channel programmable DC electronic load This manual is covers the use of the ML1800 series mainframe and load modules including the installation operation and specifications of the loads Please read the user manual carefully especially the notes on safety to insure that you can use the load safely and correctly Please keep the manual so that you can look up information as needed Announcement All information in this manual is copyrighted by Intepro Systems Information included in this manual should be only for user s reference and is subject to change without notice Intepro is not responsible for any damage mistakes or losses caused by acting outside the guidance of this manual For latest news on the product updates to the manual please visit Intepro System s website at www inteproate com Certification Intepro Systems certifies that ML1800 series electronic load meets its published specifications It also certifies that it adheres to it quality standards in its use of raw materials used and the manufacturing design to ensure the highest quality product Warranty This hardware product is warranted against faults caused under the normal us
40. In the constant resistance mode the load is equivalent to a constant resistor the input current of which will be adjusted according to the change of the input voltage Working curve shown in figure 3 5 Resistance Setting R U I Load Current Input Voltage Figure 3 5 constant resistance mode Constant resistance mode has high and low ranges CRH and CRL corresponding to the two range of the voltage range under CV mode Load range can be switched by changing the parameters in setting mode menu Two resistance values can be switched by pressing A B key 3 2 4 Constant Power Mode CP In the constant power mode the load will consume a certain constant power The input current will be adjusted linearly according to the change of the input voltage to ensure power consumption is unchanged working curve as shown in Figure 3 6 Input Voltage Power Setting I Load Current Figure 3 6 constant power mode Constant power mode only has one range Two power value can be switched by pressing key 16 Intepro Systems ML1800 User Manual 3 2 5 LED Mode LED mode is mainly used for LED driver test When the UUT voltage exceeds a certain limited value Vf the load will operate in approximately constant resistance mode The working curve is shown in Figure 3 7 LEDIo Vf LEDVo V Figure 3 7 LED mode LED mode has high and low ranges LEDH and LEDL corresponding to the working voltage Loa
41. P Setting up the CP mode in high range MODE LEDL Setting up the LEDL mode in low range MODE LEDH Setting up the LEDL mode in high range Parameter CCL CCH CCDL CCDH CRL CRH CVH CVL CP LEDL LEDH Example MODE CCL Query Syntax MODE Return the operation mode of the electronic load Return Parameter lt gt Query Example MODE Return Example CCL PROGRAM Subsystem 88 Intepro Systems ML1800 User Manual PRORGram FILE se lt NRf gt 2 NRI SEQuence lt NRf gt CHANnel MANUAL EXT lt CHAR gt se ACTive OFFTime PFDTime KEY 89 Intepro Systems ML1800 User Manual PROGram FILE Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Depends on program file Setting up program number PROGram FILE lt gt 1 to 10 PROG FILE 10 PROGram FILE lt NR1 gt PROG FILE 10 Return the program number used PROGram SEQuence Depends on program file Setting up program
42. ROGRAM RUN CONFigure AUTO MODE lt NR1 gt CONF AUTO MODE 0 or 1 Return the execution type of automatic load conduction CONFigure REMote Type All channels Description Set status of remote control Syntax CONFigure REMote ON CONFigure REMote OFF Parameter ON 1 0 Example CONF REM ON Set to be remote control 74 Intepro Systems ML1800 User Manual CONFigure TIMing TIMEOUT Type Specified channel Description Set the stop time of timing mode 0s 99999s Syntax CONFigure TIMing TIMEOUT lt NRf gt Parameter 0 99999 Example CONFigure TIMing TIMEOUT 1000 Set stop time to be 1000ms Query Syntax CONFigure TIMing TIMEOUT Return Parameter lt NR1 gt unit MS Query Example CONFigure TIMing TIMEOUT Return Example 00 16 40 000s CONFigure VOFF STATe Type Specified channel Description Set VOFF mode to be on off Syntax CONFigure VOFF STATe lt NR1 gt Parameter 1 0 Example CONFigure VOFF ON Set VOFF mode to be on Query Syntax CONFigure VOFF Return Parameter lt NR1 gt Query Example CONFigure VOFF Return VOFF mode to be on or off Return Example 1 CONFigure VOFF FINALVOLTage Type Specified channel Description Setting the end voltage in VOFF mode Syntax CONFigure VOFF FINALVOLTage lt NRf gt Parameter Value returned according to load module Detailed number range please refer to specification Example CONFigure VOFF FINALVOLTage 1 8 Setting
43. RR STAT L1 20 Setting up CC current 20A to be used by static load L1 CURR STAT L2 10mA Setting up CC current 10mA to be used Intepro Systems ML1800 User Manual by static loadL2 CURR STAT L1 MAX Setting up CC current maximum value to be used by static load L1 CURR STAT L2 MIN Setting up CC current minimum value to be used by static load L2 Query Syntax CURRent STATic L1 CURRent STATic L2 CURRent STATic L1 CURRent STATic L2 MIN Return Parameter lt NR2 gt unit Amp Query Example CURR STAT L1 Return the setup current value of static load Return Example 3 12 CURRent STATic RISE FALL Type Specified channel Description Setting the slew rate in constant current static mode Syntax CURRent STATic RISE NRf suffix CURRent STATic FALL lt NRf gt suffix Parameter Effective number range refer to module specification default unit is A us Example CURR STAT RISE 2 5 Setting up the rise slew rate of static load to be 2 5A us CURR STAT FALL 1A us Setting up the fall slew rate of static load to be 1A us Query Syntax CURRent STATic RISE CURRent STATic FALL CURRent STATic RISE MAX CURRent STATic FALL MIN Return Parameter lt NR2 gt unit A us Query Example CURR STAT RISE Return the rise slew rate of static load Return Example 2 5 CURRent DYNamic L1 L2 Type Description Syntax Parameter Example Specified channel Setting up current of dynamic load in CC mod
44. Setting Slew Rate Press A Wor knob to choose rise slew rate enter 1 and confirm Choose fall slew rate enter 2 and confirm Slew __7 1 000 A us Slew 2 000 A us 4 4 2 Constant Voltage Soft Start Operation CV Rise Constant voltage soft start operation has high and low ranges e Constant voltage soft start low range CVL Rise e Constant voltage soft start high range CVH Rise The response rate is set as Fast Medium and Slow rise time setting range 34 Intepro Systems ML1800 User Manual 0 1 10000ms The following will demonstrate the operation process of constant voltage soft start Before the operation first select the channel and enter the Application menu 1 Select Constant Voltage Soft Start Function Press A V or knob to choose Apply Select and confirm Choose CVL Rise and confirm Apply Select CVL Rise 2 Setting Voltage Value Press V or knob to choose CVL1 enter 10 and press Enter key to confirm CVL1 10 000 V 3 Setting Rise Time Press A V or knob to choose CVL Rise Time enter 1000 and press Enter key to confirm CVL Rise Time 1000 ms 4 Setting Response Rate Press A V or knob to choose Response Rate then choose response rate to be Fast through A V or knob and press Enter key to confirm Response Fast 4 4 3 Constant Current to Constant Voltage Operation CC To CV CC to CV
45. Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example LED IO Type Effective number range refer to individual specification STAT RISE 2 500 Setting up the rise slew rate of the static load to be 2 5W us POWer STAT FALL 1W us Setting up the fall slew rate of the static load to be 1W us POWer STATic RISE POWer STATic FALL POWer STATic RISE MAX POWer STATic FALL MIN NR2 unit2A us POW STAT RISE Return the rise slew rate of the static load 2 5 lt NR2 gt lt NR2 gt Specified channel Setting up the output voltage of LED driver LED VO lt NRf gt Effective number range refer to individual specification LED VO 8 Setting up Vo 8V LED VO 24 Setting up Vo 24V LED VO lt NR2 gt LED VO Respond to the setup Vo value 24 Specified channel 111 Intepro Systems ML1800 User Manual Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example LED VF Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example OCP Subsystem Setting up the output current of LED driver LED IO lt NRf gt Effective number range refer to individual specification LED IO 0 1 Setting up lo 0 1A LED IO 2 Setting up lo 2A LED IO NR2 LED IO Respond to the setup lo value 2 Specified channel Se
46. Systems ML1800 User Manual Mode CVL 2 Setting Voltage Value Press A V or knob to choose CVL1 input and press Enter to confirm Choose CVL2 enter 6 and confirm CVL1 5 000 V CVL2 6 000 V 3 Setting Response Rate PressA V or knob to choose Response PressA V keys or knob to choose response rate Slow and press Enter to confirm Response Slow 4 3 3 Constant Resistance Operation CR Constant resistance has CV high and low ranges e CR low level CRL e high level CRH The resistance is in ohms as a unit and the slew rate is in the amp S A us as a unit The following will demonstrate the operation process of constant resistance Before the operation first select the channel and enter the Mode menu 1 Select Constant Voltage Range Press A V or knob to choose Mode and press Enter key to confirm Choose CRL or numeric key 5 and confirm Mode CRL 2 Setting Resistance Value 30 Intepro Systems ML1800 User Manual Press A V or knob to choose CRL1 enter 1 and confirm Choose CRL 2 enter 2 and confirm CRL1 1 000 CRL2 2 000 3 Setting Slew Rate Press A Wor knob to choose rise slew rate input 1 and confirm Choose fall slew rate enter 2 and confirm Slew _ 1 000 A us Sew 2 000 A us 4 3 4 Constant Power Operation CP The power is in watts W as a
47. TATe lt NR1 gt LOAD SHOR Return the status of short circuit simulation 1 All channels Setting up the mode of short circuit key in the electronic load LOAD SHORt KEY TOGGLE TOGGLE 1 HOLD O LOAD SHOR KEY TOGGLE Setting up the mode of short circuit key to be Toggle LOAD SHOR KEY HOLD Setting up the mode of short circuit key to be Hold LOAD SHORt KEY lt NR1 gt LOAD SHOR KEY Return the mode of short circuit key in the electronic load 83 Intepro Systems ML1800 User Manual Return Example 1 This command is to query the protection status of the LOAD PROTection Type Specified channel Description electronic load Syntax LOAD PROTection Example LOAD PROT Return Parameter lt NR1 gt Bit Site E 5 14 Status 0 0 RV OP OV OC Site Query Example Return Example 0 LOAD PROTection CLEar Type Specified channel LOAD PROT Return the status of the electronic load Description This command resets the protection status of the electronic load Syntax Parameter Example MEASURE LOAD PROTection CLEar Effective number range refer to individual specification LOAD PROT CLE Subsystem 84 Intepro Systems ML1800 User Manual CURRent P ALLPower ALLTemperature MEASure VOLTage Type Specified channel Description Return the measur
48. User Manual 3 Fuse 4 AC input connector 5 NG GO output interface 6 DIGITAL I O interface 7 GPIB bus interface 8 RS232 interface 1 5 Module Introduction FT66103A and FT66105A can both be installed in ML1800 Each module has independent channel number and input terminal and can be controlled separately or simultaneously by the chassis Each module has two test input terminals plus and minus and remote sense terminal General features and operation ranges are listed in Table 1 2 Table 1 2 Module General Specification Model Number FT66103A FT66105A FT66106A FT66108A Input Current 0 60A 0 10A 0 120A 0 20A Input Voltage 0 80V 0 500V 0 80V 0 500V Max power 300W 300W 600W 600W CC Range 6A 60A 1A 10A 12A 120A 2A 20A CV Range 16V 80V 50V 500V 16V 80V 50V 500V CR Range 0 025 1000 16V 0 625 25000 80V 0 5 18750 50V 25 936000 500 12 500 16 0 3125 12500 80 0 25 937 50 50 12 5 46 8 0 500 CP Range 300W 300W 600W 600W LED Mode Range 16V 80V 50V 500V 16V 80V 50V 500V Installation Position Sampling Local sampling or remote sampling Protection OVP OCP OPP OTP and input reverse connection protection Intepro Systems ML1800 User Manual 2 Installation This chart describes how to install ML1800 multiple channel programmable DC electronic load and introduces the boot check
49. Voltage lt aard gt unit Volt MEAS ALLV 1 2 2 10 2 0 0 0 MEASure ALLCurrent Independent channel Return all the measured current of all the load modules at the input MEASure ALLCurrent lt aard gt unit Amp MEAS ALLC 5 12 0 0 0 0 0 MEASure ALLPower Independent channel Returns all the measured power of all the load modules at the input MEASure ALLPower 86 Intepro Systems ML1800 User Manual Return Parameter lt aard gt unit watt Query Example MEAS ALLP Return Example 5 12 0 0 0 0 0 MEASure ALLTemperature Type Specified channel Description Return the temperature of the electronic load Query Syntax MEASure ALLTemperature Return Parameter lt NR1 gt unit centigrade Query Example MEAS ALLT Return Example 30 30 30 30 30 50 MODE Subsystem MODE Type Specified channel Description This command sets up the operation mode of the electronic load Syntax MODE CCL Setting up the CC mode in low range 87 Intepro Systems ML1800 User Manual MODE CCH Setting up the CC mode in high range MODE CCDL Setting up the CC dynamic mode in low range MODE CCDH _ Setting up the CC dynamic mode in high range MODE CRL Setting up the CR mode in low range MODE CRH Setting up the CR mode in high range MODE CVH Setting up CVH mode MODE CVL Setting up CVL mode MODE C
50. ait 9 2 5 5 1 1 1 9 2 6 CONNECTIONS e AA IA AA NND S ee ek 10 2 6 1 PUT Connect m t 10 2 6 2 Sampling herr mies one Une R ied ness 11 2 6 3 Parallel Connection ni aaa 12 3 Functions and Features 13 3 1 de redes 13 3 1 1 Local Control Mode Ai E EES 13 3 1 2 Remote Control 13 3 2 Test Functions eoe ee ered edi reo 14 SIA MO rM 14 3 2 2 Constant Voltage Mode CV ssi deste es 15 3 2 3 Constant Resistance Mode 16 3 2 4 Constant Power Mode 16 e o E AD WO ids dra o E ER 17 3 3 Apply RUNGE OM 17 3 3 1 Constant Current Soft Starting Mode CC Rise sss 17 3 3 2 Constant Voltage Soft Starting Mode CV Rise 18 252 2 TO GV s ERA AERA 18 3 3 4 Constant Resistance to Constant Voltage Mode CR To CV 19 3 4 Programming FUNCTION ano aea eere set eee VEN BIA so eve E AEE OA EE LE AR 19 3 5 OCP F lCtiOTis cried erae tp eere eer R
51. al Data Format Digital data format ML1800 electronic load receive is as shown in Table 6 1 Digital data can be added to the suffix to distinguish data Doubler may be put before the suffix The unit of data forms can be adopted in ML1800 is as shown in table 6 2 the doubler are listed in table 6 3 Table 6 1 Digital Data Format Symbol Description Example NR1 Digits without decimal point Assumed 123 0123 decimal point in the right of the least significant digit to the right NR2 Digits with decimal point 123 12 3 0 123 123 NR3 Digits with decimal point and index 1 23 3 1 23E 3 NRf Elastic decimal format include NR1 or 123 12 3 1 23 3 NR2 or NR3 NRf Expanded decimal format include 123 12 3 1 23E 3 MIN NRf MIN MAX MIN and MAX are the MAX minimum and maximum value of the parameters Table 6 2 Unit Form Mode Type First Suffix Secondary Reference Unit Suffix CC Current A Ampere CR Resistance OHM Ohm CV Voltage V Volt All Time secon ms Millisecond All Slew Rate A us Amperes micro Second Table 6 3 Suffix Doubler Doubler Mnemonic Definition Symbol 1E6 MA mega 1E3 K kilo 1E 3 M milli 1E 6 U micro 1E 9 N nano 62 Intepro Systems ML1800 User Manual 6 3 2 Character Data Format On the instruction statement lt NRf gt data format allows character input On enquiry statement string may return in one of the two format
52. alled by pressing numeric 0 9 directly Wherein key 0 corresponds to No 10 mode file Note Fast recall function is only valid in mode page 4 10 Save File FT66100 has 1 10 schema files to save and 1 10 program files and 1 10 OCP files to save The following will demonstrate the process of file recall 4 10 1 Save Mode File In Mode menu Press Shift 1 key to enter Save menu Press A V or knob to select Mode File and press Enter to confirm Enter 10 and confirm Save Mode 10 4 10 2 Save Program File In Program Edit menu Press Shift 1 key to enter Save menu PressA V or knob to select Program File and press Enter to confirm Choose Yes and confirm Program YES 4 10 3 Save OCP File In OCP File menu Press Shift 1 key to enter Save menu Press A V or knob to select OCP File and press Enter to confirm Enter 10 and confirm OCP 10 52 Intepro Systems ML1800 User Manual 4 11 External Port The rear panel of the main board of the loads has two rows of connection terminal digital AND NG GO output DI Load On Off D2 Total Pass D3 Total Fail D4 Short Signal DS Ptotection Signal lt D6 External Load On Off D7 External Trig For Sequence Run GND m Ground D1 D2 D3 D4 D5 D6 D7 GND ojo ojo
53. arameter is not within the statutory range or consistent with the operation of the electronic load or 120 Intepro Systems ML1800 User Manual command can not be executed because of some operation condition CME 32 Command error Occurrence of syntactic or semantic error or electronic load received lt GET gt from program information 8 5 Status Byte Register e Status byte register summarize all the standard status events in all Status register Table Table 8 4describes status events applied to electronic load Status byte register can be read with serial polling or STB query e RQS is the only bit which can be removed automatically after serial polling e When Status byte register is read by STB query bit 6 in Status byte register will include MSS bit MSS bit indicates the load has at least one requested service STB will not influence status byte e Status byte register is removed by CLS command Table 8 4 Bit description of status byte Mnemonic Bit Value Meaning symbol CSUM 2 4 Channel summary Indicates whether to enable channel events Affected by channel condition channel event and channel summary event register QUES 3 8 Questionable Indicates whether to occur MAV 16 Message can be used Indicates whether the output queue includes data ESB 5 32 Event status bit Indicates whether the standard event occurs RQS MSS 6 64 Reques
54. ays the sequence number of the operation Load Displays the input status Mode Displays the operation mode QC Displays the test results compared with the standard inspection Sequence when the program operates is as in Figure 4 2 43 Intepro Systems ML1800 User Manual m Seq 1 On Time Off Time P F Delay Time UJ d Fl ze JI Short Time Figure 4 2 Sequence when the program operates When program test is finished program running result will be displayed If all is passed PASS will be displayed PROG 1 PASS If test fails Failed sequence numbers of test will be shown in table form 4 7 Specification Examination Press Shift 7 into the Specification Examination When Examine Enable is on GO NG at the display area of the module lights up the load will compare the measured value with the specification limits Examination contents include voltage current and power The following will demonstrate the process of specification setting 1 Examine ON OFF The enable option is set to open which means opening the specification examination function At this point the GO NG enable port NG GO EN of the host outputs high level please refer to the manual section 4 11 SPEC On 44 Intepro Systems ML1800 User Manual 2 Setting Examination Content Press A V button or knob to select the Examination Content and confirm and choose Current as examination content and co
55. buffer char rxBuffer BUFFERSIZE 1 Receive buffer int main int argc TCHAR argv Traditional NI 488 2 Calls ibwrt ibrd traditional function communication iDev ibdev GPIB BoaralD GPIB ADDRESS GPIB NO SECONDARY ADDR TIMEOUT EOTMODE EOSMODE strcpy txBuffer IDN n txLength strlen txBuffer 122 Intepro Systems ML1800 User Manual printf ibwrt gt s n txBuffer ibwrt iDev txBuffer 101 ibrd iDev rxBuffer BUFFERSIZE rxBuffer ibcntl 0 printf ibrd lt s n rxBuffer ibonl GPIB_BoardlD 0 Multi Device NI 488 2 Calls Send Receive Multiple devices function communication Send the following ending way are used respectively NULLend NLend DABend SendIFC GPIB_BoardID DevClear GPIB_BoardID GPIB_ADDRESS strcpy txBuffer IDN txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB_ADDRESS txBuffer txLength NLend Receive GPIB_BoardID GPIB ADDRESS rxBuffer BUFFERSIZE STOPend rxBuffer ibcntl O printf Receive lt s n rxBuffer strcpy txBuffer CHANnel 1 set up channel 1 txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NLend strcpy txBuffer MODE CCL set up mode to be CCL txLength strlen txBuffer printf Send gt s n txBuffer Send GPIB_BoardID GPIB ADDRESS txBuffer txLength NLend strcpy txBuffer CURRent STATic L1
56. control mode which include e Remote communication interface of electronic load RS232 GPIB option e GPIB address serial baud rate and calibration mode 3 1 2 Remote Control Mode To enter the remote control mode of the electronic load please select the right interface mode first GPIB or RS232 and connect the wire between the control device and electronic load The configured remote control parameters must be consistent with the settings of the control device When receiving the programming commands the electronic load will be switched to remote control mode automatically All the buttons on the panel of the load will be shielded under remote control mode and the load only can be controlled by programming commands If you want to return to local control mode press Shift 9 key 13 Intepro Systems ML1800 User Manual 3 2 Test Functions 5 modes are included in the test function of electronic load e Constant current mode CC e Constant voltage mode CV e Constant resistance mode CR e Constant power mode CP e LED mode 3 2 1 CC Mode In the constant current mode the load will consume constant current regardless of the input voltage Working curve is as shown in Figure 3 1 I Load Current Current Setting Load Input Voltage Figure 3 1 constant current mode The constant current mode is with high and low ranges In low range the input control accuracy and resolution is high High range can ac
57. d range can be switched by changing the parameters in setting mode menu 3 3 Apply Function FT66100 offers a variety of application mode to adapt to the tests under special cases Including four modes e Constant current soft starting mode CC Rise e Constant voltage soft starting mode CV Rise e Constant current to constant voltage mode CC TO CV e Constant resistance to constant voltage mode CR TO CV 3 3 1 Constant Current Soft Starting Mode CC Rise Constant current soft starting mode is equivalent to an inductive load and the simulated inductance is proportional to the rise time of the soft starting The working curve is shown in Figure 3 8 17 Intepro Systems ML1800 User Manual Load Current Rise Time Figure 3 8 constant current soft starting mode Constant current soft starting mode has two ranges CCL Rise and CCH Rise 3 3 2 Constant Voltage Soft Starting Mode CV Rise Constant current soft start mode is equivalent to a capacitive load and the simulated capacitance is proportional to the rise time of the soft start The UUT might be impacted instantly by high current in this mode The working curve is shown in Figure 3 9 Load Current Rise Time Figure 3 9 constant current soft start mode Constant current soft starting mode has two ranges CVL Rise and CVH Rise 3 3 3 CC To CV Constant current to constant voltage mode can make the battery discharge more fully The
58. dual specification RES L1 20 OHM Setting up CR 20 ohm to be used by load L1 RES L2 10 OHM Setting up CR 10 ohm to be used by load L2 RES L1 MAX Setting up CR maximum value of L1 to be used by load L1 RES L2 MIN Setting up CR minimum value of L2 to be used by load L2 RESistance L1 RESistance L2 RESistance L1 MAX RESistance L2 MIN lt NR2 gt unit 0HM RES L1 Return the setup resistance of load L1 value 10 RESistance RISE FALL Type Description Syntax Specified channel Setting up the impedance slew rate in CR mode RESistance RISE lt NRf gt suffix RESistance FALL lt NRf gt suffix 94 Intepro Systems ML1800 User Manual Parameter Example Query Syntax Return Parameter Query Example Return Example RUN Subsystem Effective number range refer to individual specification RES RISE 2 5 Setting up CR rise slew rate to be 2 5A us RES FALL 1A us Setting up CR fall slew rate to be 1A us RES RISE MAX Setting up CR rise slew rate to be maximum programmable value RES FALL MIN Setting up CR fall slew rate to be minimum programmable value RESistance RISE RESistance FALL RESistance RISE MAX RESistance FALL MIN lt NR2 gt unit A uUs RES RISE Return CR rise slew rate 2 5 RUN Type All channels Description Set all electronic loads to be ON Syntax RUN SPECIFICATION Subsystem 95 Intepro Systems ML1800 User Manual SPECification
59. e CURRent DYNamic L1 lt gt suffix CURRent DYNamic L2 lt NRf gt _ suffix Effective number range refer to module specification default unit is CURR DYN L1 20 Setting up parameter of dynamic load L1 20A CURR DYN L2 10mA Setting up parameter of dynamic load L2 10mA CURR DYN L1 MAX Setting up parameter of dynamic load L1 78 Intepro Systems ML1800 User Manual maximum value Query Syntax CURR DYN L2 MIN Setting up parameter of dynamic load L2 minimum value CURRent DYNamic L1 CURRent DYNamic L2 CURRent DYNamic L1 MAX CURRent DYNamic L2 MIN Return Parameter lt NR2 gt unit Amp Query Example Return Example CURR DYN L1 Return the setup value in dynamic load L1 35 6 CURRent DYNamic RISE FALL Type Description Syntax Parameter Example Query Syntax Specified channel Setting up the current slew rate in CC dynamic mode CURRent DYNamic RISE lt NRf gt suffix CURRent DYNamic FALL lt NRf gt suffix Effective number range refer to module specification default unit is A us CURR DYN RISE 2 5 Setting up the rise slew rate to be 2 5A us CURR DYN FALL 1A us Setting up the fall slew rate to be 1A us CURR DYN RISE MAX Setting up the rise slew rate to be the maximum value of dynamic load CURR DYN FALL MIN Setting up the fall slew rate to be the minimum value of dynamic load CURRent DYNamic RISE CURRent DYNamic FALL CURRent DYNamic RISE MAX CURRen
60. e and maintenance for a period of two years Customer shall prepay shipping charges including duty and tax if required for products returned to our repair facility Intepro will pay for return of products to customer Limitation of Warranty The warranty is only limited to the mainframe excluding protective tube Any misuse absentee control unauthorized modification operation outside of the environmental specifications for the products and damage from a major force is not covered and Intepro will not repair for free Yearly calibration is also not covered All repairs will offer an evaluation report before repair Only the warranty above is offered no any other express or implied warranty is offered Intepro Systems is not responsible for any special occasional or indirect damage Safety Summary The following general safety precautions must be observed during all phases of operation and repair otherwise the protection function of the product will be compromised Intepro will not take any responsibility for any consequences caused by the non observation of safety notes Safety Instruction e Three core cable is required for AC input of the load and must be connected to ground otherwise potential hazardous events can occur that could result in personal injury e Operating personnel must not remove the covers Only trained and qualified personnel are allowed to do service or calibration or the warranty will be voided e Always ens
61. e fall slew rate in CR mode in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup CRF n n n n n n lt NR2 gt unit A us CRF 1 0 2 5 2 5 10 2 0 5 0 All channels Setting up the action type of Von in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup LAT n n n n n n 0 OFF 1 ON LAT 0 1 1 1 0 1 106 Intepro Systems ML1800 User Manual GO Type All channels Description This command start stop the current sinking of the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax GO n n n n n Parameter 0 OFF 1 ON other value no action Example 0 1 1 1 0 1 VRB Parameter 0 LOW range 1 HIGH range other value no action Example VRB 0 1 1 1 0 1 0 1 Type All channels Description Setting up the voltage range in CC mode in the 6 channel host If the channel does not exist the host chassis will ignore the setup The unit of the setup value is Volt Please refer to the specification table in measurement section Syntax VR _n n n n n n Parameter lt NR2 gt unit Volt Example VR 1 1 2 16 80 10 VON Type All channels Description Setting up the Von voltage in the 6 channel mainframe If the channel does not exist the mainframe will ignore the setup Syntax VON n n n n n n Parameter lt NR2 gt unit Volt Example 1 23 1 23 0 0 5 12 CCSR Type All channels
62. ed voltage at the input of the electronic load Query Syntax MEASure VOLTage Return Parameter lt 2 gt unit Volt Query Example MEAS VOLT Return Example 8 12 MEASure CURRent Type Specified channel Description Return the measured current at the input of the electronic load Query Syntax MEASure CURRent Return Parameter NR2 unit Amp Query Example MEAS CURR Return Example 3 15 MEASure POWer Type Specified channel 85 Intepro Systems ML1800 User Manual Description Query Syntax Return Parameter Query Example Return Example MEASure INPut Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Type Description Query Syntax Return Parameter Query Example Return Example Type Description Query Syntax Return Parameter Query Example Return Example Type Description Query Syntax Return the measured power at the input of the electronic load MEASure POWer lt NR2 gt unit Watt MEAS POW 3 15 Specified channel Select the input interface of electronic load distal or proximal to measure the voltage MEASure INPut UUT 1 LOAD O MEAS INP UUT MEAS INP LOAD MEASure INPut lt NR1 gt MEAS INP 0 Return the input interface has been set up MEASure ALLVoltage Independent channel Return all the measured voltage of all the load modules at the input MEASure ALL
63. epro Systems ML1800 User Manual FETCh CURRent Type Specified channel Description The measurement at the input of the load module return real time current Query Syntax FETCh CURRent Return Parameter NR2 unit Amp Query Example FETC CURR Return Example 3 15 FETCh POWer Type Specified channel Description The measurement at the input of the load module return real time power Query Syntax FETCh POWer Return Parameter lt 2 gt unit Watt Query Example FETC POW Return Example 5 28 FETCh STATus Type Specified channel Description Return real time status of the load module Query Syntax FETCh STATus Return Parameter lt NR1 gt Site 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Status OT RV OP OV OC Bit 16 8 4 2 1 value Query Example FETC STAT Read back the current status of the load module Return Example 4 FETCh ALLVoltage Type Independent channel Description The measurement at the input of all load modules return real time voltage Query Syntax FETCh ALLVoltage Return Parameter lt gt unit Volt Query Example FETC ALLV Return Example 1 2 2 0 0 10 2 0 81 Intepro Systems ML1800 User Manual FETCh ALLCurrent Type Independent channel Description The measurement at the input of all load modules return real time current Query Syntax FETCh ALLCur
64. ess A V or knob to choose lo enter 0 5 and press Enter to confirm Io 0 500 A 4 Setting Forward Bias Press A V or knob to choose enter 5 and press Enter to confirm Vf 5 000 V 4 4 Setting Application Settings Press Shift 5 key to enter Apply menu Users can set the load working modes CC soft start CV soft start CC to CV or CR to CV 4 4 1 Constant Current Soft Start Operation CC Rise Constant current soft start operation has high and low ranges e Constant current soft start low range CCL Rise e Constant current soft start high range CCH Rise Current is in Amp A as a unit the slew in the Amp Microsecond A us as a unit voltage in volts V as a unit and the rise time in milliseconds MS as the unit its time setting range 0 1 10000ms The following will demonstrate the operation process of constant current soft start Before the operation first select the channel and enter the Application menu 33 Intepro Systems ML1800 User Manual 1 Select Constant Current Soft Start Function Press A V or knob to choose Apply Select and confirm Choose CCL Rise and confirm Apply Select CCL Rise 2 Setting Current Value Press A V or knob to choose CCL1 enter 1 and confirm CCL1 1 000 A 3 Setting Rise Time Press V or knob to choose CCL Rise Time enter 1000 and press Enter key to confirm CCL Rise Time 1000 ms 4
65. g TIMEOUT se NRP Gy NRI L ne se ONA OFF O wy _ GFINALVOLTage se NRP lt NR2 gt wy OFF O NR VLA Intepro Systems ML1800 User Manual CONFigure VOLTage ON Type Specified channel Description Set start voltage Syntax CONFigure VOLTage ON lt NRf gt suffix Parameter Numerical value range is set according to module specifications Example CONF VOLT ON 1 Set Von 1V CONF VOLT ON 300mV Set Von 300mV Query Syntax CONFigure VOLTage ON Return Parameter lt NR2 gt Unit Volt Query Example CONF VOLT ON Return setup Von value Return Example 3 5 CONFigure VOLTage RANGe Type Specified channel Description Set voltage measurement range in constant current mode Syntax CONFigure VOLTage RANGe lt suffix Parameter Numerical value range is set according to module specifications Example CONF VOLT RANG 16 Set voltage level to be low level CONF VOLT RANG 80 Set voltage level to be high level CONF VOLT RANG H Set voltage level to be high level CONF VOLT RANG L Set voltage level to be low level Query Syntax CONFigure VOLTage RANGe Return Parameter lt NR2 gt Query Example CONF VOLT RANG Return to voltage rank Return Example 16 CONFigure VOLTage LATCh Type Specified channel Description Set functions and classification of Von Syntax CONFigure VOLTage LATCh ON CONFigure VOLTage LATCh OFF Parameter ON 1 OFF 0 Example
66. g of timing mode the range is 0 to 99999 seconds s Where in Os represents timing mode is not turned on The default setting is Os When timing is over the screen shows Over Time Out 1000 S 14 Setting Battery CV Battery CV is set to be on The load can be used for constant voltage charging The default setting is off Battery CV On 15 Setting Voltage Display Signs When Voltage Display Sign is minus voltage read back is and it accounts for a character width if set to plus no sign will be displayed Sign VOLT Plus 16 Setting Keypad Sound When Sound is on key touch tone is on when it is off key touch tone is on Sound On 49 Intepro Systems ML1800 User Manual 17 Setting Short Key Short ways include Hold and Toggle The default setting is Toggle Short Toggle 18 Setting Digital IO When Digi IO is on loading of module can be controlled through external signal at this point On Off key is invalid The default setting is off 19 Setting Serial Baud Rate The user needs to set the proper baud rate and selectable baud rate 600 1200 2400 4800 9600 The default setting is 9600 COM Baud 9600 20 Setting Serial Check The RS232 has an optional check which includes None Odd and Even The default setting is None COM Parity None 21 Setting GPIB Address GPIB Address can be any integer f
67. g up the end current to be the minimum value Query Syntax OCP IEND MAX MIN gt Return Parameter _ NR2 unit Amp Query Example OCP IEND OCP IEND MAX OCP IEND MIN Return Example 3 OCP STEP Type Specified channel Description Setting up the step number in OCP mode Syntax OCP STEP lt NR1 gt Parameter 1 100 Example OCP STEP 100 Setting up the step number to be 100 OCP STEP MAX Setting up the step number to be maximum value OCP STEP MIN Setting up the step number to be minimum value Query Syntax OCP STEP MAX gt Return Parameter lt NRi gt Query Example OCP STEP OCP STEP MAX OCP STEP MIN Return Example 100 OCP DWELI Type Specified channel Description Setting up the interval time in OCP mode Syntax OCP DWELI lt NRf gt Parameter 500 1000 Example OCP DWEL 500 Setting up the interval time to be 100 ms OCP DWEL MAX Setting up the interval time to be 114 Intepro Systems ML1800 User Manual Query Syntax Return Parameter Query Example Return Example maximum value OCP DWEL MIN Setting up the interval time to be minimum value OCP DWEL MAX MIN gt lt NR1 gt unit ms OCP DWEL OCP DWEL MAX OCP DWEL MIN 500 OCP TRIGger VOLTage Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Specified channel Setting up the trigger voltage in OCP mode OCP TRIG
68. ger VOLTage lt NRf gt Effective number range refer to individual specification OCP TRIGger VOLTage 4 5 Setting up the trigger voltage to be 4 5V OCP TRIGger VOLTage Setting up the trigger voltage to be the maximum value OCP TRIGger VOLTage MIN Setting up the trigger voltage to be the minimum value OCP TRIGger VOLTage MAX MIN gt lt 2 gt unit Volt OCP TRIGger VOLTage OCP TRIGger VOLTage MAX OCP TRIGger VOLTage MIN 4 5 OCP SPECification L Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Specified channel Setting up the lower limit of test specification in OCP mode OCP SPECification L lt NR2 gt Effective number range refer to individual specification OCP SPECification L 1 5 Setting up the lower limit of specification to be 1 5A OCP SPECification MAX Setting up the lower limit of specification to be the maximum value OCP SPECification MIN Setting up the lower limit of specification to be the minimum value OCP SPECification L MAX MIN gt lt 2 gt unit Amp OCP SPECification L OCP SPECification L 115 Intepro Systems ML1800 User Manual Return Example Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example OCP RESult Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example
69. gure 5 1 is the structure diagram of GPIB remote control system using the GPIB interface card 57 Intepro Systems ML1800 User Manual wn GPIB Card E a GPIB Cable Electronic Load GPIB Cable l fo Electronic Load Figure 5 1 GPIB system A GPIB interface card can control 14 sets of equipment at most at the same time Note the cable length between two interconnection equipment in system can not be more than 4 meters system connecting cable length can not exceed the number of connected devices x 2 meters The GPIB interface card and IEEE488 2 GPIB connection cable for optional accessories please contact the Intepro for the accessories 5 1 2 GPIB Address Before using the GPIB interface to connect to the load you must set the address for the GPIB interface address can be any value between 0 and 30 The default value of the GPIB address in the factory is 5 The GPIB address can only be changed by the panel operation mode and unable to be set by remote control Press Shift 6 key to enter the System Settings menu select the communication mode to be GPIB than set the GPIB address Note 1 Once the electronic load receives programming commands through the GPIB interface it will automatically enter a remote control mode 2 The GPIB address is stored in the non volatile memory it will not be changed after shutdown or calling the preset 5 2 RS232 Serial Port RS232 serial port is asy
70. hieve wide load range The load range can be switched by changing the parameter in mode settings menu 3 2 1 1 Steady State Test Each range of steady state constant current mode has two values A B for constant current mode The A value and B value are switched by pressing A B key The rising falling slope decide the speed of the load from one set value to another set value as shown in Figure 3 2 14 Intepro Systems ML1800 User Manual Figure 3 2 steady state constant current mode 3 2 1 2 Transient Test The transient test function allows the load to switch the set parameters main value and transient value according to the set rule which is ideal for transient test of power supply As shown in Figure 3 3 I Rise Slew Rate Fall Slew Rate D 1 2 Figure 3 3 transient constant current mode 3 2 2 Constant Voltage Mode CV In the constant voltage mode the load will consume enough current to make input voltage maintained at the set value the working curve as shown in figure 3 4 Input Voltage Voltage Setting Load Current Figure 3 4 constant voltage mode The constant voltage mode is with high and low ranges CVL and CVH which can be 15 Intepro Systems ML1800 User Manual switched by the parameters in the mode settings menu Two voltage values can be switched by pressing A B key under constant voltage 3 2 3 Constant Resistance Mode CHR
71. i II Safety I Safety SyITBOIS zc ict II COMEM a AE OAO Wai 1 OvervieW 1 1 1 2 Main Eeatutes x 1 IRS E aE eret iere ee AA eee conve castes 2 1 4 Panell Introduction 3 1 4 1 Front Panel 2 8 3 1 4 2 Rear Panel Introduction esent 3 1 5 Module Introd ctiOn 2 ortae irre eoe re ree raa eun o novae era sac an aaa Pee 4 2 Installation a 5 2 1 Inspection ie e eve Ve eee 5 2 2 Cleaning ert petet 6 2 3 Installation 6 2 3 1 Module 6 2 3 2 Channel Number ceeccececeeccececseccecessecceceesceeceescceceesceeceesueceeeesteeeeesnneeeess 7 2 3 3 Mainframe Installation aw 8 2 3 4 Input Conneeti hi ooo eder de e 8 2 4 AC Input Requirements deret iem erret emen et
72. lect the channel and enter the Apply menu 1 Select CR to CV Function Press or knob to choose Apply Select and confirm Choose CRL to CV and confirm Apply Select CRL TO CV 2 Setting Resistance Value Press A V or knob to choose CRL1 enter 10 and press Enter key to confirm CRL1 10 000 Q 3 Setting Slew Rate Press A Wor knob to choose rise slew rate enter 1 and confirm Choose fall slew rate enter 2 and confirm Slew 1 000 A us Slew 2 000 A us 4 Setting Mode Conversion Voltage Press A Vor knob to choose Conversion Voltage enter 10 and press Enter key to confirm CRL CV Voltage 10 00 V 37 Intepro Systems ML1800 User Manual 5 Setting Response Rate Press V or knob to choose Response then choose response rate to be Fast and press Enter key to confirm Response Fast 4 5 Setting OCP Press Shift 3 key to enter OCP menu Parameters need to be set include Start current I Start End current I End they are set up according to the selection of CCH or CCL OCP only work when I Start lt I End Increasing step No NO Step 1 100 Dwell Time DwellT 500 1000ms Step current OCP test lend Istart OCP Accuracy NO Step Trigger voltage VOLT Trig set according to the user s requirements only work when the trigger voltage is lower than the measured voltage Specify low
73. les to specified particular locations Syntax SAV NR1 Parameter 1 to 100 Example 50 SRE Service Request On Command Query Type Device status Description This commands set service request start register decide which one of the events of Status Byte register is allowed to set MSS main status summary bit In bit sites 1 bit is logical Or function which makes bit 6 main status summary bit of Status Byte register to be set up Detailed corresponding Status Byte register please refer to Status System Syntax SRE lt NR1 gt Parameter 0 to 255 Example SRE 20 starts CSUM and MAV bits service request to be on Query Syntax SRE Return Parameter lt NR1 gt Query example STB STB Type SRE returns Service Request Enable Read the Status Byte Query Device status Description This query reads Status Byte register Please note in MSS main status summary but not RQS bit return in bit 6 this bit shows if the electronic load has at least one reason to request service STB will not remove Status Byte register until only when the later actions has cleared all 68 Intepro Systems ML1800 User Manual setting bits More information on registers please refer to chapter eighth Status System Status Byte Register Bit Site 7 6 5 4 3 2 1 0 Status 0 MSS ESB MAV QUES CSUM 0 0 Site 128 64 32 16 8 4 2 1 Query Syntax STB Re
74. limit SPEC L Specify Upper Limit SPEC H set according to the user s requirements After parameters are set press On Off key to start test Test results are up to the current when the measured voltage reachesthe measured voltage When the current is within the range Pass shown on the screen otherwise screen shows Fail The following will demonstrate the operation process of OCP 1 Setting Start and End Current Press A V or knob to choose I Start enter 1 and confirm Choose enter 10 and confirm 38 Intepro Systems ML1800 User Manual I Start 1 000 A I End 10 00 A 2 Setting Increasing Step Numbers and Dwell Time Press A V or knob to choose NO Step enter 100 and confirm Choose DwellT enter 500 and confirm NO Step 100 DwellT 500 ms 3 Setting Trigger Voltage Press or knob to choose Trigger Voltage then press Enter key Enter 3 6 and confirm Volt Trig 3 600 V 4 Setting Specified Upper and Lower Limit of OCP Press V or knob to choose SPEC L enter 8 8 and press Enter key Press V or knob to choose enter 9 and press Enter key SPEC L 8 800 A SPEC H 9 000 A When parameter setting is completed press On Off to start the OCP test When the test is completed test results Pass or Fail as well as OCP voltage and current value will be shown Press Shift Clear ca
75. ling fan please ensure there is at least a 15cm space from the upper side and all around with other objects for air circulation 2 3 1 Module Installation Module installation must start from the first slot position close to the main board others are sequentially installed The installation methods of all types of modules are the same A Warning When removing or installing module please follow the standard anti static work routine avoid touching the connecting terminal and the circuit board The installation method and steps are as follows 1 a oO DN 10 Turn off the power supply of the chassis disconnect the power line and all connection terminal Release the screw cap with a screwdriver and remove the cover Remove all the packing material inside the chassis Wear anti static bracelet seize the module input terminal and fix the screw hole position Install the module from the first slot position close to the main board sequentially as in figure 2 1 Install all screws to fix module Connect the wire to the terminal then insert the wire into the module and ensure a proper connection If need to install other module Please install the module according to steps 4 7 to the slot right next to the former one After all the modules are installed install the load cover Reconnect the power line Intepro Systems ML1800 User Manual Figure 2 1Module Installation 2 3 2 Channel Number Module channel
76. lofl s coa ERR 57 51 2 GPIB AdOresS aee Wa detta e eec 58 5 2 RS232 Serial Port ae 58 5 2 T Set Baud rale i Ratis e c is 59 5 2 2 Set Parity Check SySEBITIL dard euet 59 5 3 Remote Control MOGe 3 rit rn RE ERIT I REPERI E ERE SER A 59 6 Programming Commands Overview 60 6 1 Introduction to Programming Commands sess eene enne nnn nn 60 6 2 Command Definition tet entere eee oe o e e oae 60 6 3 Data BOMA Cr 61 6 3 1 Digital Data FM MA onere eese ped aao 62 6 3 2 Character Data Fomati aneen ak 63 6 4 Separator and 63 6 5 Command T rmiN tor ee aaa annaa i iwa aaa 64 T Command Details rer nasin inet Re SENE e ote e Rue eau sevbeveaseceseesy 64 Zi Public Commiands d deest ede 64 7 2 Specified Instr ctions ritiene das 69 ABOFTSUDSVSIGITL ed cates fee bie 69 CHANNEL Subsystem gua dp re azma 69 CONFIGURE S bsysStemi oi eter peek Reaves no a etr waw 7 CURRENT SUBSySIOITIs i robe duas hat ede P 76 EETOGH ASUDSUSIOITIS 80 LOAD SubSysler us toten tnra tees aea ERU na Rape eee 82 MEASURE SUDSVSIOET
77. m PFDTime lt NRf gt Parameter Effective number range refer to individual specification Example PROG PFDT 1 92 Intepro Systems ML1800 User Manual PROG PFDT 200ms Query Syntax PROGram PFDTime Return Parameter NR2 unit s Query Example PROG PFDT Return Example 0 2 PROGram SAVE Type Depends on program file Description Setting up stored program Syntax PROGram SAVE Parameter None Example PROG SAVE PROGram RUN Type Description Syntax Parameter Example Query Syntax Return Parameter Query Syntax Return Parameter PROGram KEY Depends on program file Execute program PROGram RUN ON PROGram RUN OFF 1 0 PROG RUN PROGram RUN lt NR1 gt PROGram RUN 1 Depends on program file Description Respond to key codes in the manual Keys are those on the panel of the mainframe Syntax PROGram KEY lt NR1 gt PROGram RUN OFF Parameter 0 9 gt K0 K9 10 11 Kdown Example PROG KEY 11 RESISTANCE Subsystem 93 Intepro Systems ML1800 User Manual RESistance RESistance L1 L2 Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example bd ommum 2 ORE EH Specified channel Setting up the main value of static resistance in CR mode RESistance L1 lt NRf gt suffix RESistance L2 lt NRf gt suffix Effective number range refer to indivi
78. menu setting the sync enable open can realize multi module On Off loading synchronously Load synchronization only effects in the mode and program Key SYNC is used to enable the synchronization function When setting the synchronization function of each channel press SYNC key synchronization function effects 3 7 Battery Charge Test Function Battery charging test includes constant current charging constant voltage charging and constant current to constant voltage charging The wiring diagram when the battery is charging is shown in figure 3 12 Figure 3 12 battery charging test wiring diagram When it works in constant current mode the electronic load can be used for battery constant current charging When working in battery mode of CV the load can be used for battery voltage charge To turn on the battery voltage mode settings please refer to the manual section 4 8 ML1800 series electronic load can be used for charging and discharging test of the battery The loads are easy to control by software and easily achieve life cycling test of the battery 20 Intepro Systems ML1800 User Manual 3 8 Input Control 3 8 1 Turn on off the load Press On Off key to change the input state of the electronic load 3 8 2 Short Circuit Electronic load can be simulated to test the protection performance of the UUT When the load is short circuited the current it consumed depends on the current operation mode and curren
79. mple Specified channel The shielding part of the site in Event register can be alternative and allowed to be summarized into corresponding channel site of Channel Summary Event register STATus CHANnel ENABle 0 65535 STAT CHAN ENABle 24 STATus CHANnel ENABle lt NR1 gt STAT CHAN ENAB Return the content of Status Channel Enable register 24 STATus CHANnel EVENt Type Description Query Syntax Return Parameter Query Example Return Example Specified channel After reading the regiter last time record all the channel event and reset Channel Event register STATus CHANnel EVENt lt NR1 gt STAT CHAN EVEN Read and reset Channel Event register 24 STATus CHANnel PTRansition NTRansition Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Specified channel Programmable filter can decide the conversion type in Condition register 0 to1 or 1to 0 and will set up the Event register s corresponding bits STATus CHANnel PTRansition NTRansition lt NR1 gt 0 65535 STAT CHAN PTR 4 Setting up over power over power site 2 to be 0 to 1 STAT CHAN NTR 4 Setting up over power over power site 2 to be from 1 to 0 PTR and NTR are both 4 presents from 0 to land 1 to 0 are set STATus CHANnel PTRansition STATus CHANnel NTRansition lt NR1 gt STAT CHAN PTR Query the setup of PTRansition channel 4 100 Intepro Systems ML1800 User
80. n remove the test results press On Off to start a test again 4 6 Programming Electronic load can save the mode test into file then executed automatically by programming 39 Intepro Systems ML1800 User Manual A total of 10 programs 1 10 each program has 10 sequences which is marked from 1 to 100 in schema archives The table below shows the relationship between program sequence and the corresponding schema archives Table 4 4 Relationship between program sequence and the corresponding schema archives Program 1 1 2 3 4 5 6 7 8 9 10 sequence No Corresponding file 1 2 3 4 5 6 7 8 9 10 No Program 2 1 2 3 4 5 6 7 8 9 10 sequence No Corresponding file 11 12 13 14 15 16 17 18 19 20 No Program 10 1 2 3 4 5 6 7 8 9 10 sequence No Corresponding file 91 92 93 94 95 96 97 98 99 100 No During programming operation corresponding file parameters must be set first If a program sequence is not sufficient to complete the test you can use the program chain function to get more sequences 4 6 1 Program Edit Press Shift 2 key to enter Program Edit menu The following will demonstrate the process of program edit 1 Recall Program Files Input 1 10 means to recall program 1 program 10 In program files option to recall program 1 and confirm File Number 1 2 Channel Activa
81. nchronous serial communication interface which conforms to RS232 level specification The baud rate parity and other parameters need to be 58 Intepro Systems ML1800 User Manual configured first before using this interface The serial correlation parameters can only be set through the front panel in the local control mode Command string must end with ASCII characters LF decimal 10 when edit commands are sent by using serial interface 5 2 1 Set Baud rate The default baud rate in the factory is 9600bp The user can set the appropriate baud rate selectable baud rates 600 1200 2400 4800 or 9600bps In the Settings menu option you can set Serial Baud rate option to change the baud rate of RS232 5 2 2 Set Parity Check System Serial check properties of the factory default settings is none parity Users will also be able to set odd or even parity for serial port In the system settings menu you can set the Serial Check option 5 3 Remote Control Mode In remote control mode the keyboard is locked the electronic load can only be controlled through programming commands When remote connection load voltage current and power parameters will be updated in real time Remote connection After receiving the programming commands of the remote interface the electronic load automatically enters the remote connection mode In remote connection the electronic load only can be controlled by programming command If you
82. nd statement transfer commands to the electronic load and the query commands request information from the electronic load 60 Intepro Systems ML1800 User Manual Simple Command Simple commands include one command or keyword which is normally followed by parameter or data LOAD ON Complex command When two or more than two keywords are connected with the colon it consists of a complex command The last keyword is normally followed by a parameter or data CURRent STATic L1 3 or CONFigure VOLTage RANGe H Query Command simple query command includes a keyword and then followed by a question mark MEASure VOLTage MEASure CURRent or CHAN Keyword Form Each keyword has two forms e Long form Complete spelling of the word to confirm its function such as CURRENT VOLTAGE and MEASURE e Short form Word group includes only the first three or four words of the long form such as CURR VOLT and MEAS In the definition and chart of the keyword in short form of each keyword uppercase letters are emphasized to help you remember However However Volt volt voltage VOLTAGE volTAGE and so on regardless of the form electronic load can receive If the keyword is incomplete for example VOL or curr the electronic load will not be able to identify 6 3 Data Format Main data formats include digital data format and character data format 61 Intepro Systems ML1800 User Manual 6 3 1 Digit
83. nfirm Examine Current 3 Setting Lower Limit Press A V button or knob to select Lower Limit enter 5 and confirm Lower Limit 5 000 A 4 Setting Upper Limit Press A V button or knob to select Upper Limit enter 10 and confirm Upper Limit 10 000 A 4 8 System Settings Press Shift 6 to enter the Settings menu The electronic load provides many configuration characteristics such as load voltage current limit synchronous operation etc To use these features relative parameters need to be set in accordance with the requirements The configuration parameters include the main value and module configuration parameters Channel configuration is stored separately so must be set separately The following will demonstrate the process of system setting 1 Setting Synchronization When the Sync Enable on load switch is controlled by the On Off button When the Sync Enable off On Off are only valid for the current channel Synchronous operation is set to be on by default 45 Intepro Systems ML1800 User Manual SYNC Run On 2 Setting Remote Sampling Remote Sampling on means load voltage remote sampling Remote Sampling off means load voltage proximal sampling Remote sampling eliminates the connection voltage drop on connection wire so as to obtain higher measurement accuracy Default setting is on Voltage Sense On 3 Setting CC Voltage Range In CC mode there are
84. nt carrying capacity 50 145 5 wires 5x76 xrated current carrying capacity 3 Maximum temperature 60 165 Ambient temperature 50 C Connection wire temperature 85 2 4 AC Input Requirements Rated input voltage of the electronic load is either 115VAC 10 OR 220VAC 10 Frequency is 50 or 60 Hz The power supply input wire is 3 core cables with grounding protection If there are no appropriate earth plug do not connect the load There is a power supply molded cable matching your local voltage included in accessories If the power input line and the power supply AC input end does not match please immediately contact an Intepro authorized dealer or customer service department 2 5 Power on Self test Before operating the load please confirm the following 1 Mark of the AC input range for the AC input socket Either 100 130 VAC or 200V 240V AC 2 Power line is connected to the AC input socket warning Electronic load is chassis grounded through three core power line Before load operating please confirm the load good grounding Intepro Systems ML1800 User Manual When the load power on the screen will display the LOGO picture and then displays the load model and the voltage and current monitor interface 1 FT66103A 80V 60A 300W 2 FT66103A 80V 60A 300W o d 0 0000 v 0 0000 v 0 0000 A 0 0000 A d CCL 0 0000 w 0 0000 w E owa 0 000 A wA Slew 3 rr66105A 500V 10A 300W FT66105A 500V 604 30
85. of using Syntax ERR Parameter lt crd gt Example ERR POWER Subsystem 109 Intepro Systems ML1800 User Manual 5 POWer STATic L1 L2 Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Specified channel Setting up the power of static load in CP mode POWer STATic L1 NR2 suffix POWer STATic L2 lt NR2 suffix Effective number range refer to individual specification POWer STAT L1 20 Setting up CC power 20W to be used by static load L1 POWer STAT L2 10 Setting up CC power 10W to be used by static load L2 POWer STAT L1 MAX Setting up CC power maximum value to be used by static load L1 POWer STAT L2 MIN Setting up CC power minimum value to be used by static load L2 POWer STATic L1 POWer STATic L2 POWer STATic L1 MAX POWer STATic L2 MIN NR2 unit Watt POW STAT L1 Return the setup power value of the static load L1 20 POWer STATic RISE FALL Type Description Syntax Specified channel Setting up the power slew rate in CC static mode POWer STATic RISE lt NRf gt suffix POWer STATic FALL lt NRf gt suffix 110 Intepro Systems ML1800 User Manual Parameter Example POWer Query Syntax Return Parameter Query Example Return Example LED Subsystem LED LED VO Type Description
86. ohre tke po pee iere 20 3 6 Load SynchronizatioF ae a r utet Rs 20 3 7 Battery Charge Test 2 1 20 3 8 Conttol c eerte 21 9 9 T Turm Tne Ioad rcr MAA WA A 21 Raid e te uate oss pande etate ius 21 3 8 3 Loading Unloading Voltage esent 21 3 9 ree ori aen tese eee ea Pav alae eet 22 3 10 Slew Rate and Minimum Transition 23 3 11 Remote Sampling ttr eee ees 24 3 12 5ystem Language eicere eene Aa 24 3 13 Fast Recall ene ette et eee re ee er PR ee Ree ree ee ee vh eis 24 3 14 Turn On Keypad iko ii kk 25 3 15 Restore Factory Settings AI ka 25 4 AA AA 26 41 KOY Pad Ua 26 4 1 1 Numeric 26 X12 FUNGUO KEYS E 27 4 2 Channel Selection 27 4 3 Setting up Operation 28 4 3 1 Constant Current Operation od Sur oa ae ect bn 28 4 3 2 Constant Voltage Operation CV essere 29 4 3 3 Constant Resistance Operation CR eene 30 4 3 4 Constant Power Ope
87. onic load host 66100 completes all pending operation this instruction becomes the reason of interface setting of OPC bit bit 0 of Standard Event Status register Syntax Parameter None OPC OPC Operating Completing Query Type Device status Description When all the pending operations are finished this query returns ASCII 1 Query Syntax Return Parameter lt 1 gt Query example 1 RCL RCL Recall Instrument Status Command Type Device status Description This command resets the status with command of the electronic load stored in the memory before to specified site see SAV Syntax RCL lt NR1 gt Parameter 1 to 100 Example RCL 50 RDT RDT Resource Transmission Query Type system interface Description This command returns the 66100 module type of the electronic load if no channel exists it returns 0 If channel exists it returns type such as FT66103A FT66105A FT66106A Query Syntax RDT Return Parameter lt gt 67 Intepro Systems ML1800 User Manual Query Example RST SAV SRE FT66103A FT 66103A FT66105A FT66105A 0 0 RST Reset Command Type Device status Description This command imposes ABORt CLS LOAD PROT CLE instructions Syntax RST Parameter None SAV Store Command Type Device status Description This command stores the current status of single electronic load and status of all the channels of multiple modu
88. onic load support keyboard lock function Press Shift 8 key open close the keyboard lock When Keyboard is locked only On Off Short Shift and SYNC can be operated Keyboard lock state can be configured by setting Boot Keypad Lock option in System Settings menu 3 15 Restore Factory Settings The load provides restore factory setting function Detailed factory settings with parameters are as shown in table 3 1 Table 3 1 restore factory default parameters table Item Parameters Sync enable On Remote sampling Off CC voltage range High Current sampling range High Power current limit Maximum Load unload voltage OV Load latch unload enable Off Power load Off Power up mode Mode Load time Os Battery constant voltage Off Keyboard sound On Short circuit key Toggle Digital port fast call boot Of keyboard lock Steps of restore factory default settings are as follows 1 Press Shift 4 into document call interface 2 In Schema File option enter 101 and press Enter to confirm Note After restoring factory settings need power on again 25 4 Operation This chapter describes operation methods of ML1800 electronic load 4 1 Keypad i s ET CHI CH2 CH3 CH4 CH5 CH6 Mode SYNC AB shor ovorr 2 3 A Save PROG OCP 4
89. operation has two ranges e CC low range to CV CCL To CV e CC high range to CV CCH To CV 35 Intepro Systems ML1800 User Manual The following will demonstrate the operation process of CC low range to CV Before the operation first select the channel and enter the Apply menu 1 Select CC to CV Function Press A V or knob to choose Apply Select and confirm Choose CCL to CV and confirm Apply Select CCL TO CV 2 Setting Current Value Press V or knob to choose CCL1 enter 1 and press Enter key to confirm CCL1 1 000 A 3 Setting Slew Rate Press A V or knob to choose rise slew rate enter 1 and confirm Choose fall slew rate enter 2 and confirm Slew 1 000 A us Slew 2 000 A us 4 Setting Mode Conversion Voltage Press A V or knob to choose Conversion Voltage enter 10 and press Enter key to confirm CCL CV Voltage 10 000 V 5 Setting Response Rate Press A V or knob to choose Response then choose response rate to be Fast and press Enter key to confirm Response Fast 36 Intepro Systems ML1800 User Manual 4 4 4 Constant Resistance to Constant Voltage Operation CR To CV CR to CV operation has two ranges e CR low range to CV CRL To CV CR high range to CV CV The following will demonstrate the operation process of CR low range to CV Before the operation first se
90. ower over power bit 2 to be from 1100 Query Syntax STATus QUEStionable P TRansition STATus QUEStionable NTRansition Return Parameter lt NRi gt Query Example STAT QUES PTR Return the setup on QUEStionable Ptransition Ntransition Return Example 4 VOLTAGE Subsystem VOLTage L1 L2 Type Specified channel Description During CV mode setting up the voltage of the static load Syntax VOLTage L1 103 Intepro Systems ML1800 User Manual Parameter Example Query Syntax Return Parameter Query Example Return Example VOLTage CURRent Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example VOLTage MODE Type Description Syntax Parameter Example Query Syntax Return Parameter VOLTage L2 Effective number range refer to individual specification VOLT L1 8V Setting up voltage of load L1 to be 8V VOLT L2 24V Setting up voltage of load L2 to be 24V VOLT L1 Setting up voltage of load L1 to be the maximum value VOLT L2 MIN Setting up voltage of load L2 to be the minimum value VOLTage L1 VOLTage L2 VOLTage L1 MAX VOLT L2 MIN lt NR2 gt unit Volt VOLT L1 0 Return the setup voltage value of Load L1 Specified channel Setting up the current limit in CV mode VOLTage CURRent Effective number range refer to individual specification VOLT CURR 3 During CV mode setting up load current limit
91. procedures and cautions of application 2 1 Inspection After receiving the electronic load please check the equipment according to the following steps e Check if any damage caused during the transport If the box or the protective pad is seriously damaged please immediately contact an Intepro authorized dealer or customer service department Note please do not send the equipment back before the offer Accessories inspection Make sure you also receive the accessories as below Figure 2 1 Accessories Accessories Description Power cord and fuse Access to 110 or 220V AC power supply RS232 interface cable Access to PC User manual Include installation operation information CD Software and technical information Warranty and after sale Warranty and after sale service service guide information If there is anything missing or damaged please immediately contact an Intepro authorized dealer or customer service department Machine inspection If the load chassis is damaged or operates abnormally please immediately contact an Intepro authorized dealer or customer service department Intepro Systems ML1800 User Manual 2 2 Cleaning If you need to clean the external card cage please wipe gently with a dry or non scented cloth do not wipe the inside part A warning Disconnect the power supply before cleaning 2 3 Installation Electronic load dissipates heat through the coo
92. quence Mode Three modes to control the execution ways of sequences Skip Skip sequence and the input state of the load will be kept the same Auto Use loading unloading time to control the loading and unloading of the load When loading unloading time pass the load will skip to the next sequence automatically Manual Use A or to 9 number keys to control the execution sequence Press numeric key to select random execution sequence number 0 represents sequence 10 External When triggering signal D7 of DIGITAL I O is for external triggering to control execution sequence SEQ Mode Auto 8 Setting Short Circuit Channel PressA V button or knob to select Short CHNN and press Enter to confirm Press 1 6 keys to turn on off the short circuit function of corresponding modules and then confirm 42 Intepro Systems ML1800 User Manual Short CHAN 1 2 9 Setting Short Time The short time range is 0 60 seconds s PressA V button or knob to select Short Time enter 1and confirm set the short time to 1s Short Time 1 0 S 10 Repeat step 6 to 9 until the program editing is finished 4 6 2 Program Operation When the program function is selected press On Off to operate the program The program operation status is displayed PROG SEQ Load On Mode Auto QC Pass eae _ PROG Displays the program number of the current channel operation SEQ Displ
93. racy of test the wire resistance between the electronic load and power supply under test should be as low as possible to ensure the wire is not overheat when short circuit current passing During the test there will be higher current through the connection wire which will produce a certain pressure drop and heat on the wire When the connection load and unit are under test the connection wire diameter needs to be considered in order to guarantee the measurement precision and test security Two small wires will impact the test accuracy the large heat dissipation may cause a safety hazard Standard copper wire is ideal for connection wire Table 2 2 lists the maximum current that copper wires of different diameters can bear please refer to the list of content to choose appropriate pressure drop wires please ensure the connecting line is not more than 0 5V when load modules work Table 2 2 Copper wire diameter and the maximum current it can bear 2 5 25 1 If use aluminum wire the maximum load current is Intepro Systems ML1800 User Manual 4 0 30 about 84 of the same diameter copper wire 6 0 40 2 If a plurality of wires bundled together the 8 0 55 maximum load will be reduced Calculation of actual 14 70 load current of a plurality of wires as below 22 95 2 wires 2x94 xrated current carrying capacity 30 100 3 wires 3x89 xrated current carrying capacity 38 125 4 wires 4x83 xrated curre
94. ration CP sees 31 23 5 LED OPS ALON enis petat dutem 32 4 4 Setting Application 5 441000 0 33 4 4 1 Constant Current Soft Start Operation CC 33 4 4 2 Constant Voltage Soft Start Operation CV 34 4 4 3 Constant Current to Constant Voltage Operation CC To CV 35 4 4 4 Constant Resistance to Constant Voltage Operation CR To CV 37 AS Setting eeu ete e eMe ERE IP case 38 4 6 Programming tip RPM DR eni eie tee est 39 4 6 1 Program Edit ute Rota DU se te Std tenui iugis 40 45 2 Program ODOFPallODb eee coetui e bett fonde 43 4 7 Specification Examination 44 4 8 System Settings ettet audiit ete a e iens 45 AO File Recall EE 51 4 9 1 Recall Mode File nr etre te ae t e n dit de 51 4 9 2 Recall OGP Eil8z tiit eee etes e 51 4 9 3 Fast Recall iU RIED BC 52 A 10 S3Ve ie aeter D a Ens 52 4 101 Save Mode File ente et meet e aed e 52 4 10 2 Save Program File eer etie o Gham 52 4 10 3 5avVe OCP Files 5er tenete etti 52 ATT Ext rnal POM zoe itecto tette eiu ea etit 53 size nime 57 5 L GPIBititerface e Re EC 57 5 1 1 GPIB System GonDIgural
95. ration first select the channel and enter the Mode menu 1 Select CC range Press A V or knob to choose Mode and press Enter key to confirm Choose CCL or press numeric key 1 and confirm Mode CCL 2 Setting Current Value Press A V or knob to choose CCL1 enter 1 and confirm Choose CCL2 enter 2 and confirm CCL1 1 000 A CCL2 2 000 A 28 Intepro Systems ML1800 User Manual 3 Setting Slew Rate Press A Vor knob to choose rise slew rate enter 1 and confirm Choose fall slew rate enter 2 and confirm Slew _ 1 000 A us Slew 2 000 A us 4 Setting Transient Functional Cycle In CCDL or CCDH mode main value transient pulse width need to be set the range is 0 025ms 50000ms Press A V or know to choose T1 enter 10 and confirm Choose T2 enter 20 and confirm T1 10 ms T2 20 ms 4 3 2 Constant Voltage Operation CV Constant voltage has CV high and low ranges e CV low level e high level CVH Voltage is in volts V as a unit the response rate can be set as fast Fast medium Medium and slow Slow The following will demonstrate the constant voltage operation process Before the operation first select the channel and enter the mode menu 1 Select Constant Voltage Range Press A V or knob to choose Mode and press Enter key to confirm Choose CVL or press numeric key 7 and confirm 29 Intepro
96. re passed output is high pulse signal Signal pulse width is 50ms 3 Total Fail O P Pulse This signal is used only in program testing If one or more tests are failed output is high pulse signal Signal pulse width is 50ms 4 Short Signal O P Level When performing short circuit operation Short ON will output the high level while Short OFF will output low level Short On ON ON D4 ox 5 Protection Signal Level When protection happens on any module Protection Signal will output high level When protection disappears signal will output low level OC OP OV OFF OTIEV ON Jon D5 on on Output 6 External Load On Off Level TTL input signal high gt 4 3V low lt 0 7V is used to control signal on main board so as to execute synchronous loading 55 Intepro Systems ML1800 User Manual D6 Input OFF ON OFF ON ON Load 7 External Trig Pulse This signal is used only in program testing It only works when DIGI IO is set to ON If the mode of any line of programs is set to External program running need pulse signal input externally RUN H STOP L EXT Trig 2012 1 Auto 2 Auto 3 EXT 4 Auto 56 Intepro Systems ML1800 User Manual 5 Remote Control ML1800 series programmable DC electronic load provides two kinds of remote communication interface for the
97. rent Return Parameter lt aard gt unit Amp Query Example FETC ALLC Return Example 0 0 0 0 5 12 0 FETCh ALLPower Type Independent channel Description The measurement at the input of all load modules return real time power Query Syntax FETCh ALLPower Return Parameter lt gt unit Watt Query Example FETC ALLP Return Example 5 28 2 0 0 10 2 0 LOAD Subsystem L Frais PROTection 82 Intepro Systems ML1800 User Manual LOAD STATe Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Example Specified channel LOAD command to make the electronic load effective On or ineffective Off LOAD STATe ON LOAD STATe OFF 1 0 LOAD ON Make the load effective LOAD OFF Make the load ineffective LOAD STATe lt NR1 gt LOAD Return if the electronic load is effective Return 1 LOAD SHORI STATe Type Description Syntax Example Parameter Query Syntax Return Parameter Query Example Return Example LOAD SHORt KEY Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Specified channel Make the short circuit simulation effective or ineffective LOAD SHORI STATe LOAD SHOR ON Make the short circuit simulation effective LOAD SHOR OFF Make the short circuit simulation ineffective 1 0 LOAD SHORt S
98. rom 0 31 The default setting is 5 GPIB Address 5 22 Setting System Language Setting language include Simplified Chinese Traditional Chinese and English The default setting is English Language fai SFA xc 50 Intepro Systems ML1800 User Manual 23 Setting Shortcut Recall When Shortcut Recall is on you can call the corresponding mode file by pressing the number keys on the keyboard The default setting is off Shortcut Recall Off 24 Setting On Lock When Shortcut Recall is on digital keyboard is locked after reboot There is Shift 8 on off lock in addition The default setting is off On Lock Off 4 9 File Recall Press Shift 4 key to enter the Recall menu FT66100 has 1 101 schema files and 1 10 OCP file for recall No 101 file recall is to restore factory settings The following will demonstrate the process of file recall 4 9 1 Recall Mode File Press A V or knob to select Mode File press Enter key to confirm Input 10 to recall No 10 file Press Mode key for file content Save Mode 10 4 9 2 Recall OCP File Press A V or knob to select OCP File press Enter key to confirm Enter 1 to recall No 1 OCP file Press Shift 3 key for file content OCP 51 Intepro Systems ML1800 User Manual 4 9 3 Fast Recall In configuration menu if fast recall is set to on 1 10 mode files can be rec
99. s shown in the following Symbol Character Format crd Character response data Characters allowed to up to 12 aard Any ASCII response data it allows the contingent 7 digits ASCII to return This data format is hidden message Terminator reference to Separator and Terminator 6 4 Separator and Terminator Except keywords and parameters GPIB program statement need Data separation Data must be separated with the command keywords before by a space Using spaces to delimit is shown in example such as CURR 3 and the circle inside is separated with the letter SP on the chart Keywords separation Keywords or header are separated with a colon a semicolon or both For example LOAD SHOR ON MEAS CURR VOLT CURR STAT L1 3 VOLT L1 5 Program line separators Terminator notify GPIB has reached the end of the program normally it is transmitted by GPIB programming statement automatically Other terminator code will also end such as EOI In this manual terminator is at the end of each example If you need to specify the words to show in symbol lt nl gt which means new line and said the byte of ASCII code is OKOA hexadecimal or 10 decimal places Branch instructions Colon separated between keywords means the change of the main value of the branch to the next lower layer For example CONF VOLT ON 5 CONF is the root order instruction VOLT is the first branch while ON is the second branch
100. s the minimum 23 Intepro Systems ML1800 User Manual Slew rate set value 100 90 80 70 60 50 40 30 20 10 0 UT qu Estimated Time P gt Actual Tims Wei Figure 3 15 relationship between slew rate and actual conversion time 3 11 Remote Sampling SENSE SENSE are remote sampling terminals which provide the internal measurement system of the load with remote voltage signal When the load operates on the CV CR and CP function or need to measure the output voltage of the UUT accurately remote sampling mode is recommended When remote sampling rate terminal SENSE and SENSE are connected directly to the output end of the UUT which eliminates the voltage drop on the connection wire so as to reach higher measurement accuracy Note If select remote mode for sampling way but remote sampling terminal SENSE and SENSE has not been connected to the output end of the UUT the load will not be able to measure the port voltage correctly and cannot work 3 12 System Language Languages load provides simplified Chinese traditional Chinese and English The user can press Shift 6 to enter the system settings menu for settings 3 13 Fast Recall When Fast Recall is on press 0 9 to call corresponding schema file in which number 10 schema file is called by pressing O 24 Intepro Systems ML1800 User Manual 3 14 Turn On Keypad Lock FT66100 electr
101. ster groups use specific status system requirements of electronic load Multiple channels of electronic load use channel status and Channel Summary register group to save the status information into the status register of each channel 8 2 Channel Register Group e Status Register Status Register represents the present status of electronic load signal Reading status register does not change its bit status PTR NTR filter EVEN event register Event register depends on the corresponding status change of status bit in the status register or specific status in the electronic load When the corresponding status makes the definition of the electronic load change the event becomes true Positive conversion 0 to 1 m Negative conversion 1 to 0 Positive or Negative conversion 0 to 1 or 1 to 0 PTR NTR filter decides setting which kind of status conversion bit in the event of register Channel status and Questionable status allow programming conversion Other register groups such as Channel Summary standard event status register group use implied rising 0 to 1 status transformation to set the bits in the event register Reading event register clears the value of the register all bits set to zero e Enable register Enable register can make the bits corresponding to Event register to be logical function and programmed into Channel Summary bit 117 Intepro Systems ML1800 User Manual CHANNEL STATUS ONE CHANNEL
102. t DYNamic FALL MIN Return Parameter lt NR2 gt unit A us Query Example Return Example CURR DYN RISE Return the rise slew rate of dynamic load 2 500 CURRent DYNamic T1 T2 Type Description Syntax Parameter Example Specified channel Setting up the parameter at T1 or T2 duration of dynamic load CURRent DYNamic T1 lt NRf gt suffix CURRent DYNamic T2 lt NRf gt suffix Effective number range 0 025ms 50000ms default unit is s CURR DYN T1 10ms Setting up dynamic time period T1 10ms CURR DYN T1 10 Setting up dynamic time T1 10s CURR DYN T2 2s Setting up dynamic time period T2 2s 79 Intepro Systems ML1800 User Manual Query Syntax CURR DYN T1 Setting up dynamic time period T1 to be the maximum value CURR DYN T2 MIN Setting up dynamic time period T2 to be the minimum value CURRent DYNamic T1 CURRent DYNamic T2 CURRent DYNamic T1 MAX CURRent DYNamic T2 MIN Return Parameter lt NR2 gt unit s Query Example CURR DYN T1 Return the parameter of dynamic time period T1 Return Example 0 15 FETCH Subsystem FETCh VOLTage Type Description Query Syntax Return Parameter Query Example Return Example STATus ALLCurrent ALLPower VOLTage CURRent ALLVoltage Specified channel The measurement at the input of the load module return real time voltage FETCh VOLTage lt 2 gt unit Volt FETC VOLT 8 12 80 Int
103. t and power carry of the load Electronic loads can be performed in parallel in the CC CR and CP mode but can t achieve the parallel operation in CV mode During parallel operation the measured output power is equal to the sum of all parallel load power consumption To take the constant current function for instance two loads connected in parallel a principal value is set to 20A the other one is set to 30A than the measured power will be on the 50A output current Power Supply Under Testt 7 Figure 2 5 load parallel line connection 12 3 Functions and Features This chapter main describe the main functions and features of the electronic load You will have deeper knowledge on ML1800 series electronic load by reading this chapter 3 1 Control Mode Electronic load offer two control modes local control and remote control Under local control mode the user main operate and set through the panel of the electronic load and check the load status through the liquid display Under remote control mode the user main operate and set through various interfaces and program commands offered by the electronic load 3 1 1 Local Control Mode When the load turned on default mode is local control mode The user can operate the load through the panel keypad under local control mode The liquid display provides users parameters measurement display and state indicator display function Some parameters only can be set under local
104. t range Under CC and CP modes the maximum short circuit current is 105 of the current range Under CV modes short circuit operation is equivalent to setting the constant voltage value of the load OV Short circuit operation does not change the current settings The load will return to the previous state when exiting short circuit operation When short circuit during the first 200ms the maximum power the load consumes is 2 times of the rated power FT66100 has two short circuit modes Hold and Toggle e Press the Short load short circuit to select Hold releasing the button will exit the short circuit condition e Press the Short load short circuit to select Toggle then press Short again to exit the short circuit condition Short circuit operation only effect in Mode If you press the SYNC key the short circuit operation is only valid for the current module 3 8 3 Loading Unloading Voltage When the UUT voltage rise or fall speed is slow setting the load voltage can implement UUT protection When set only when the measured power supply voltage rises to higher than the set load voltage will the load starts drawing current When the load voltage drops below the setting load stops drawing current When the load latch and unload enable are turned on When voltage drops below the unloading voltage the load will stop drawing current The working curve is shown below Loading unloading voltage setting is only
105. t register will be reset to be 0 e Channel Status Enable register is programmable and demonstrate which bit in channel status event is logical or function which will change into the corresponding bit in Channel Summary Event register 8 2 2 Channel Summary e Channel Summary register summarizes channel condition status and up to 6 channels e When setting up one of the bits in Channel Status Event register is set will also make the corresponding channel bits to be set in Channel Summary Event register e Reading the value of Event register will make the position to be 0 e Channel Summary Enable register is programmable and demonstrate which channel summary event bit changes from the current channel logically O Red into the bit 2 CSUM in Status Byte register 8 2 3 Questionable Status e Questionable Status register provides one or more abnormal status condition bits Table 8 2 lists abnormal conditions of electronic load which are same as channel status conditions Complete description please refer to Table 8 1 e Where abnormal status occurs corresponding condition register is set e Programming PTR NTR to select which conversion way of bit condition in Status Condition register will set up the corresponding bits in Event register e Read the value of Questionable Status Event register the data will be reset e Questionable Status Enable register is used to control the electronic load to enable 119 Intepro Systems ML180
106. t service main summary status During serial polling period returns and remove RQS Query with STB return but do not remove MSS 8 6 Service Request Enable Register Service Request Enable register is programmable to specify which one bit in the status byte register will generate service request 121 Intepro Systems ML1800 User Manual 9 Practical Example ONote Some programming commands in this section are followed by comment statements started with which is not within the range that the electronic load can identify but only for the convenience of understanding the corresponding programming commands so in the actual operation of electronic load comment statement including can not be entered This section provides a basic paradigm for the control of electronic load Here the GPIB is NI National Instruments product For more detailed information please refer to the examples folder under installation CD ROM directory paradigm include stdafx h include lt windows h gt include ni488 h define BUFFERSIZE 1024 define character buffer size define GPIB BoardID 0 Board handle define ADDRESS 5 device address define NO SECONDARY ADDR 0 second level address define TIMEOUT T10s timeout 10s define 1 Enable the END message define 0 Disable the EOS mode int iDev int txLength char txBuffer BUFFERSIZE 1 Send
107. t to CP mode lt NR1 gt 0 NG 1 GO All channels Request GO NG result please refer to specifications of all channels SPECification SPEC Return GO NG results of all channels lt NR1 gt 0 NG 1 GO SPECification VOLTage Type Description Syntax Parameter Example Query Syntax Query Example Return Parameter Return Example Specified channel Setting up voltage specifications SPECification VOLTage H SPECification VOLTage L Effective number range refer to individual specification SPEC VOLT H lt NRf gt suffix SPEC VOLT L lt NRf gt suffix SPECification VOLTage H SPECification VOLTage L SPEC VOLT H lt NR2 gt unit Volt 4 75 SPECification CURRent Type Description Syntax Parameter Specified channel Setting up current specifications SPECification CURRent H SPECification CURRent L Effective number range refer to individual specification 97 Intepro Systems ML1800 User Manual Example Query Syntax Query Example Return Parameter Return Example SPEC CURR H lt NRf gt suffix SPEC CURR L lt NRf gt suffix SPECification CURR H SPECification CURR L SPEC CURR H lt NR2 gt unit Amp 4 75 SPECification POWer Type Description Syntax Parameter Example Query Syntax Query Example Return Parameter Return Example Specified channel Setting up power specifications SPECification POWer H SPECification POWer L
108. tion 40 Intepro Systems ML1800 User Manual Only when the module exists and the synchronization SYNC RUN option in configuration menu is set to on program test can be run Press A V or knob to select Active CHAN Press 1 6 to choose active channel to be effective or ineffective and confirm Active CHAN 1 2 3 Setting Program Chains Program chains function help get more test sequences Enter 1 10 implies that the link program 1 program 10 enter 0 represents no program chain To choose Chain Number option and enter 2 represents linking to program 2 then press Enter to confirm Chain Number 2 4 Setting Check Time Delay Sequence Pass Failure delay time is used to set delay time for P F detection the range is 0 to 30 seconds S Input 1 at P F delay which means detection delay time is set to 1s and confirm P F Delay 1 0 5 5 Setting Load ON OF Time When the program is executed with and without load time sequence control load on off On Off time range is 0 60 seconds s PressA V button or knob to select On time enter 2 and confirm Select the Off Time option enter 0 and confirm 41 Intepro Systems ML1800 User Manual On Time 208 Off Time 0 0 5 6 Setting Edit Steps Input 1 10 represents calling sequence 1 sequence 10 Press V button or knob to select SEQ enter 1 and press Enter key to confirm SEQ 7 Setting Se
109. tting up the forward bias of LED LED VF lt NRf gt Effective number range refer to individual specification LED VF 8 Setting up Vf 8V LED VF 24 Setting up Vf 24V LED VF lt NR2 gt LED VF Respond to the setup Vf value 24 112 Intepro Systems ML1800 User Manual OCP se ONA OCP Type Specified channel Description Execute or cancel OCP test Syntax OCP lt NR1 gt Parameter ON 1 OFF 0 Example OCP ON OCP ISTArt Type Description Syntax Parameter Example Query Syntax Return Parameter Query Example Return Example Execute OCP test Specified channel Setting the start current in OCP mode OCP ISTArt lt NRf gt Effective number range refer to individual specification OCP ISTA 0 5 Setting up the start current to be 0 5A OCP ISTA MAX Setting up the start current to be the maximum value OCP ISTA MIN Setting up the start current to be the minimum value OCP ISTArt MAX MIN lt NR2 gt unit Amp OCP ISTA OCP ISTA MAX OCP ISTA MIN 0 5 113 Intepro Systems ML1800 User Manual OCP IEND Type Specified channel Description Setting up the end current in OCP mode Syntax OCP IEND lt NRf gt Parameter Effective number range refer to individual specification Example OCP IEND 3 Setting up the end current to be 3A OCP IEND MAX Setting up the end current to be the maximum value OCP IEND MIN Settin
110. turn Parameter lt 1 gt Query Example STB returns the content of status byte Return Example 20 7 2 Specified Instructions FT66100 series products have the following specified SCPI commands ABORT Subsystem ABORT ABORt Type All channels Description Set all electronic loads to be OFF Syntax ABORt CHANNEL Subsystem 69 Intepro Systems ML1800 User Manual CHANnel SYNCon lt aard gt CHANnel LOAD Type Specified channel Description Select channel by the later channel specific instruction will receive and execute specified instructions Syntax CHANnel lt NRf gt Parameter 1 6 Example CHAN 1 Set specified channel to be 1 CHAN MAX Set specified channel to be 6 CHAN MIN Set specified channel to be 1 Query Syntax CHAN CHAN MAX CHAN MIN Return Parameter lt NRi gt Query Example CHAN Return to the current specified channel Return Example 1 CHANnel SYNCon Type Specified channel Description Set if the load receives synchronous instruction action of RUN ABORT Syntax CHANnel SYNCon ON CHANnel SYNCon OFF Parameter ON 1 0 Example CHAN SYNC ON Set the load to receive the synchronous instruction action of RUN ABORT CHAN SYNC OFF the load to receive the synchronous instruction 70 Intepro Systems ML1800 User Manual action of RUN ABORT Query Syntax Return Parameter Query Example
111. two kinds of read back voltage range High range High is for use in high voltage low range Low is for use in low voltage so as to obtain a better voltage resolution The voltage range of CC is high range High by default 4 Setting Current Sampling Range There are two Current Sampling Range High range is for High CCH low range is for CCL The default setting is high range High CURR Range High 5 Setting Current Limit This function will limit the load current and the protection current in CV mode can not exceeds the limit value The default value is the maximum permitted current CURR Limit 60 00 A 6 Setting Power Limit This function will limit the maximum load power to be the power limit value If the power exceeds the limit value the load stops loading The default value is the maximum permitted power 46 Intepro Systems ML1800 User Manual Power Limit 100 00 W 7 Setting Load Voltage When the load is ON and the output voltage of the unit to be measured reaches the load voltage then the load sinks current Von Point 20 00 V 8 Load Latch Load control has two modes of operation latched and unlatched mode Load latch on means that when the load voltage is reached the load sinks current Load latch off means when lower than the load voltage the load stops loading The default setting is off The following figure 4 3 and 4 4 shows the current waveform when the
112. unit and the slew rate is in the amp S A us as a unit The following will demonstrate the operation process of constant power Before the operation first select the channel and enter the Mode menu 1 Select Constant Power Mode Press A V or knob to choose Mode and press Enter key to confirm Choose CP or numeric key 9 and confirm Mode CP 2 Setting Power Value Press A V or knob to choose CP1 enter 10 and confirm Choose CP2 enter 20 and confirm 31 Intepro Systems ML1800 User Manual CP1 10 00 W CP2 20 00 W 3 Setting Slew Rate Press A Vor knob to choose rise slew rate enter 1 and confirm Choose fall slew rate enter 2 and confirm Slew 1 000 A us Slew 2 000 A us 4 3 5 LED Operation LED mode has high and low ranges LED low level LEDL e LED high level LEDH The following will demonstrate the operation process of LED mode Before the operation first select the channel and enter the Mode menu 1 Select LED Level Press A V or knob to choose Press Enter key to confirm Choose or press numeric key 0 and confirm Mode LEDL 2 Setting Output Voltage Set LED driver test voltage Press A V or knob to choose enter 10 and press Enter to confirm 32 Intepro Systems ML1800 User Manual Vo 10 000 V 3 Setting Output Current Set LED driver test current Pr
113. uracy is specified for one year load operation temperature should be 22 C 28 C 71 82 F and relative humidity is up to 80 In addition please preheat the load for half an hour before measuring accuracy WA 66103A 66105A 66106A 66108A No Power 300W 300W 600W 600W Current 60A 10A 120A 20A Voltage 1 80V 500V 80V 500V Minimum Voltage at 1V 60A 4 5V 10A 1 5V 120A 5V 20A Full Current CC Range 0 6A 0 60A 0 1A 0 10A 0 12A 0 120A 0 2A 0 20A Resolution 0 1mA 1mA 0 02mA 0 2mA 0 2mA 2mA 0 04mA 0 4mA Accuracy 0 1 0 1 F S 0 1 0 2 F S 0 1 0 1 F S 0 1 0 2 F S 0 1 0 1 F S 0 1 0 2 F S 0 1 0 1 F S 0 1 0 2 F S Range 0 16V 0 80V 0 50V 0 500V 0 16V 0 80V 0 50V 0 500V Resolution 0 2 1 10mV 0 2 1mV 10mV Accuracy 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 0 05 0 1 F S 2 Range 0 300W 0 300W 0 600W 0 600W Resolution 5mW 5mW 10mW 10mw Accuracy 0 5 1 F S 0 5 1 F S 0 5 1 F S 0 5 1 F S CR 2 3 0 0250 1000 16V 0 50 18750 50V 12 5mQ 500 16V 0 25 937 50 50V Dus 0 6250 25000 80 250 936000 500 0 3125 12500 80V 12 5 46 8KQ 500V Resolution 16bit 16bit 16bit 16bit 3 0 4 1000 3 0 4 18750 3 0 4 500 3 0 4 937 50 Acouracy 3 0 2 25000 3 0 2 936000 3 0 2 25000 3 0 2 468000
114. ure that AC input power is de energized prior to connection or disconnecting any cable e sure the protection tube is assembled correctly before turning on the load e Do not operate in an explosive and flammable atmosphere e Do assemble or replace any components alone or modify without authorization e To avoid fire or permanent damage please make sure the input voltage is no more than 50 higher than the rated value Safety Symbols Interpretation of international symbols used on the chassis and user manual is as the chart below Symbol Symb Direct Current Lire m Aliernaling Current 1 Line Voltage AC and On Lad mes 3 Phase CO 2 Earth Ground 0 Standby Protschve On Chassis Ground 1 Of waa Rik al Eladia Shock HAAS ol Shack f 4 Hat Heal duse Caution refer to A Caulien refer to Content Introduction ote hosted ae eee a east eee eee aaa Announcement aeo terrore eret reete eet S t A Pe m ee Vett o o ees Safety AU UKA MI etd eed tetas a
115. urrent of the load If the reverse current exceeds the rated current it may cause damage to the electronic load e Over Temperature Protection OT The load is with internal temperature detection circuit when the internal temperature exceeds the safety limit the load will close the input and OT will be prompted on the screen A fan will be at full load operation as soon as possible to cool the load A waring Please do not place the AC power output end to the input end of the load and ensure the input voltage should not exceed the maximum rated input voltage 3 10 Slew Rate and Minimum Transition Time Conversion slew rate defines the switching speed between value A and value B in the constant current constant resistance and constant power function of the load The slew rate of the CC CR and CP functions can be set up The time of one x value converted to another setting value can be set by changing slew rate of the electronic load Figure 3 15 describes the relationship between slew rate set value and actual converting time In CC CR and CP functions Rise and fall slew rate can be set up If the constant current transient mode is on the load will convert between the rise slew rate and fall slew rate Slope value will determine the minimum conversion time between the principal value and the transient value When the slew rate is set to the maximum value the conversion time between the principal value and the transient value i
116. useful in CC Mode 21 Intepro Systems ML1800 User Manual V t D t Figure 3 13 Von Loading Von non locking V N Von Figure 3 14 Von Unloading Von non locking 3 9 Protection Features ML1800 series provide protection functions including over current protection over voltage protection over power protection reverse voltage protection and over temperature protection e Over Current Protection OCP If the input current is 105 higher than the rated value the load will enter the over current protection state VFD displays the information as e Over Voltage Protection OVP If the input voltage is 105 higher than the rated value the load will enter the over voltage protection state VFD displays the information as OV e Over Power Protection OPP Over power protection is mainly used to protect the hardware to avoid components aging quickly or damaged caused by being in long time state of over power When the input power is 105 higher than the rated value the input will be turned off VFD displays the information as OP 22 Intepro Systems ML1800 User Manual e Reverse Voltage Protection rEVP When the polarity of the power supply to be measured is not connected properly VFD displays the information as and an alarm sound can be heard The electronic load will be in a conducting state The maximum permissible reverse current is the same as the rated c
117. ymbol 64 Intepro Systems ML1800 User Manual i CLS CLS Type A ESE D a ESR gt gt OPC lt NRf gt lt NRf gt lt NRf gt Clear Status Command Device status Description Syntax Parameter The function of commands execution Clear the following registers lt 1 gt All channels use Channel Status Event registers lt 2 gt Channel Summary Event register lt 3 gt Questionable Status Event register lt 4 gt Standard Event Status Event register lt 5 gt Operation Status Event register Clear the error queue If the Clear Status Command follows immediately the program message termination program nl the output queue and will also be removed CLS None 65 Intepro Systems ML1800 User Manual ESE ESR Standard Event Status Enable Command Query Type Unit Status Description The instruction sets Standard Event Status Enable register decide which one of the events of Standard Event Status Event register see ESR can be allowed to set the ESB event summary bit of Status Byte register 1 in the bit site starts the corresponding event Initiating event of all Standard Event Status register is the logical Or function makes the status byte ESB 5 to be set up

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