IT8514F user manual
Contents
1. sense connector OFF lt DEFAULT gt The electronic load will measure input voltage from the front panel connector ADC UPDATE RATE HIGH LOW lt DEFAULT gt TRIGGER SOURCE Choosing the trigger signals source IMMEDIATE lt DEF gt Trigger signals from Shift CriggeD ey EXTERNAL Trigger signals from the TRIG connector in the rear panel BUS Communication command trigger mode CONNECT MODE MAXTIDLEXING SEPARATE lt DEF gt BAUDRATE SET Setting baud rate 9600 lt DEFAULT gt 9600 19200 38400 COMM PARITY SET Command parity setting NONE lt DEFAULT gt EVEN ODD ADDRESS SET Setting communication Flow mode KEY LOCK SET Setting keypad password EXIT SYSTTEM SET MAX CURRENT SET Setup the maximum current MAX POWER SET Setup the maximum power MAX VOLTAGE SET Setup the maximum voltage VOLTAGE ONSET VOLTAGE OFFSET EXIT LIST SET MODE SET Setting operation mode FIXED MODE Fixed mode LIST MODE Choosing List mode CALL LIST FILE Recall list operation file EDIT LIST FILE Edit list operation file LIST STORE MODE Users can choose 4 kind of memory space to save the list file 8X120 STEPS Total 8 files and each file have120 list steps2. 4CH Save list file in appointed area 4DH Get the list file from the appointed area 4EH Setting min voltage value in battery testing mode 4FH Reading min voltage value in battery testing mode 50H Setting timer value of FOR LOAD ON 51H Reading timer value of FOR LOAD ON 52H Disable Enable timer of FOR LOAD ON 53H Reading timer state of FOR LOAD ON 54H Setting communication address 55H Enable Disable LOCAL control mode 56H Enable Disable remote sense mode 57H Reading the state of remote sense mode 58H Selecting trigger source 59H Reading trigger source 5AH Sending a trigger signal to trigging the electronic load 5BH Saving user s setting value in appointed memory area for recall 5CH Recall user s setting value in appointed memory area 5DH Selecting FIXED SHORT TRAN LIST BATTERY function mode 5EH Getting function mode state 5FH Reading input voltage current power and relative state 60H Enter the calibration mode 61H Getting the calibration mode state 62H Calibrate voltage value 63H Sending the actual input voltage to calibration program 64H Calibrate current value 65H Sending the actual input current to calibration program 66H Store the calibration data to EEPROM 67H Setting calibration information 68H Reading calibration information 69H Restore the factory default calibration data 6AH Reading product s model
3. 26 byte Sum code BIT Signal Meaning Operation state register 0 CAL Calculate the new demarcate coefficient 1 WTG Wait for trigger signal 2 REM Remote control mode 3 OUT Output state 4 LOCAL LOCAL button state 0 is represent not in effect 1 is represent in effect 5 SENSE Remote testing mode 6 LOT FOR LOAD ON timer state Demand state register 0 RV Input reverse voltage 1 OV Over voltage 2 OC Over current 3 OP Over power 4 OT Over temperature 5 SV Not connect remote terminal 6 CC Constant current 7 CV Constant voltage 8 CP Constant povver 9 CR Constant resistance 49 36 Enter the calibration mode 60H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 60H 4 byte Calibration mode select 0 disable 1 enable 5h byte Calibration password 0X85H 6 byte Calibration password 0X11H or 0X12H 7 to 25 byte System reserve 26 byte Sum code If Load is not in protection state users could do the calibration operation 37 Getting the calibration mode state 61H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 61H 4 byte Calibration protection state 5 to 25 byte System 26 byte Sum code Represent calibration protection state by one byte Each byte is defined as From high to low 7 16 5 4 3 2 1 140 0 byte protection
4. 4 to 13 byte LIST file name ASSIC code 14 to 25 byte System reserve 26 byte Sum code 23 Selection R eading the memory space mode for storing list steps 4AH 4BH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 4AH 4BH 4 byte partition mode 1 2 4 8 5 to 25 byte System reserve 26 byte Sum code 46 24 Save Get list file in appointed area 4CH 4DH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 4CH 4DH 4 byte Storing area 1 8 5 to 25 byte System reserve 26 byte Sum code 25 Setting Reading min voltage value in battery testing mode 4EH 4FH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 4EH 4FH 4 byte The lowest byte of voltage value 5 byte The lower byte of voltage value 6 byte The higher byte of voltage value 7 byte The highest byte of voltage value 8 to 25 byte System reserve 26 byte Sum code 26 Setting Reading timer value of FOR LOAD ON 50H 51H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 50H 51H 4 byte The lowest byte of time value in timer 1 represent 1S 5 byte The highest byte of time value in timer 8 to 25 byte System reserve 26 byte Sum code Time unit in Tim
5. TRG TRG Toggled Transient Operation Action 1 PressC Shift GaTram setting LEVER A 5A LEVER B 10A transition mode is PULSE 2 Press CShift CTran Dto activate the transient mode 3 Press Shift Triggel switch to the current value of 10A 4 Press Shift Trigger switch between 5A and 10A 5 Press Shift CTran D again to stop the transient operation List Operation Users can use the front panel keypad or Power View 8500 PV8500 software to programming the list sequence Please refer to the software user s guide The following example will help you how to do the list operation in front panel Trigger NE 1 2 34 5 List count 1 lt List count 2 List sequence Action 1 Press the button of On Off execute the input of Load in OFF state 2 Press Shift CMenuD move cursor to the option of menu of CONFIG PressCEnter into the next step menu move cursor to TRIGGER SOURCE Press CEnter and move cursor to IMMEDIATE lt DEF gt setting trigger source mode is panel IMMEDIATE mode 3 Press CEnter to confirm 4 Press E to the previous menu move cursor to LIST SET 5 Press Ente into the next step menu move cursor to EDIT LIST FILE 31 17 Press Ente into the next step menu move cursor to CURRENT LIST select CURRENT MODE Press ED move cursor to REPEAT Setup LIST is in cycle mode Press to confirm setup the list
6. 34H 35H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 34H 35H 4 to 7 byte Setting value of voltage A Lower bytes are in the front location higher bytes are in the later location 43 8 to 9th byte Time value of timer A Lower bytes are in the front location higher bytes are in the later location 1represent 0 1ms 10 to 13 byte Setting value of voltage B Lower bytes are in the front location higher bytes are in the later location 14 to 15 byte Time value of timer B Lower bytes are in the front location higher bytes are in the later location 1represent 0 1ms 16 byte Transient operation mode 0 is CONTINUES 1 is PULSE 2 is TOGGLED 17 to 25 byte System reserve 26 byte Sum code 13 Setting Reading CW mode transient watt and timer parameter 36H 37H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 36H 37H 4 to 7 byte Setting value of power A Lower bytes are in the front location higher bytes are in the later location 8 to 9 byte Time value of timer A Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 10 to 13 byte Setting value of power B Lower bytes are in the front location higher bytes are in the later location 14 to 15 byte Time value of timer B Lower bytes are in the front location hig
7. 4X250 STEPS Total 4 files and each file have250 list steps 2X500 STEPS Total 2 files and each file have500 list steps 1X 1000 STEPS Total 1 file and each file have1000 list steps EXIT LOAD ON TIMER TIMER STATE Setting LOAD ON timer state ON When users choose ON and then turn on the electronic load input the LOAD ON TIMER will start working When the LOAD ON TIMER is reach the setup time the electronic load input will turn off automatically OFF lt DEFAULT gt TIMER SET Setting time of LOAD ON timer EXIT EXIT General Information Document Orientation This manual describes the operation of the IT8514F electronic loads Unless otherwise noted all units will be referred to by the description electronic load throughout this User s manual The following documents and software are shipped with your electronic load This User s Guide this document contains installation checkout front panel information and detailed programming information The Getting Started Map will help you find the information you need to complete the specific task that you want to accomplish Refer to the table of contents or index of each guide for a complete list of the information contained within Getting Started Map Task Where to find information Checking out the unit Verifying proper operation TESPA R User s Guide Using the front panel Ca
8. Time value of current step Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 12 to 25 byte System reserve 26 byte Sum code 20 Setting Rea ding one of the step s power and time values 44H 45H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 44H 45H 4 byte Appointed one step 5 to 8 byte Power value of current step Lower bytes are in the front location higher bytes are in the later location 9 to 10 byte Time value of current step Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 11 to 25 byte System reserve 26 byte Sum code 21 Setting Rea ding one of the step s power and time values 46H 47H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 46H 47H 4 to 5 byte Appointed one step 6 to 9 byte Resistance value of current step Lower bytes are in the front location higher bytes are in the later location 10 to 11 byte Time value of current step Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 12 to 25 byte System reserve 26 byte Sum code 22 Setting Rea ding List file name 48H 49H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 48H 49H
9. 2 byte Address 0 OXFE 3 byte Command 22H 23H 4 byte The Lowest byte of max voltage value 5h byte The lower byte of max voltage value 6 byte The higher byte of max voltage value 7 byte The highest byte of max voltage value 8 to 25 byte System reserve 26 byte Sum code Represent a voltage upper limit value by 4 bytes of Hex Lower bytes are in the front location the later location 1 represent 1mV For Example The voltage upper limit is code is OXOOOOSEBO then the 4th byte is OXBO 5th byte is OX3E 6th byte is higher bytes are in 16 000V the hex 0X00 7TH byte is 0X00 4 Setting Reading the max input current 24H 25H 1 byte Start bit AAH 2 byte Address 0 OXFE 40 3 byte Command 24H 25H 4 byte The Lowest byte of max current value 5h byte The Lowest byte of max current value 6 byte The higher byte of max current value 7 byte The highest byte of max current value 8 to 25 byte System reserve 26 bye Sum code Represent an current value by 4 bytes of Hex Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1mA If setting upper limit is 3 0000A the hex code is 0X00007530 then the 4th byte is 0X30 5this 0X75 6this 0X00 7th is 0X00 5 Setting Reading max input power 26H 27H 1 byte Start bit AAH 2 byte Address 0 OXFE 3
10. Choosing CW mode and setup the input watt of regulation power mode Choosing CR mode and setup the input resistor of regulation resistance mode Shift Shift keys O a Q Power ON OFF gt D fu Is le le le 2 We Scrolling keys let you move through the commands in the presently Select function menu bring up the next command in the list Function menus ard circular you can return to the starting position by continuous pressing the key Go back to the previous command in the list Function menus are circular you can return to the starting position by continuous pressing the key Enter E lt Confirmation key Immediate Action Keys CShift DCA D Switch to A setting value CSnit C B Switch to B setting value CShift Start Stop transition operation C Shift Press to store an existing electronic load state in non volatile Memory C Shift Press to recall an existing electronic load state in non volatile Memory Snift S Tran Set the transition operation parameter Snift D Menu Enter operation Menu SHO CLocaD When the load is controlled by PC press these keys to enable the front panel key C Snift Battery Battery discharge electronic operation C Shift CShort Turn on or turn off short circuit Test CShift_ Trigger Causes a trigger to occur Change the trigger source is I
11. VFD displays MIN VOLT V set the min voltage value press to start the test When the battery voltage reaches as the min voltage the battery test will stop During the testing press down Rey Y and up key A to observe the voltage current and discharge capacity of the battery and the povver of load 4 Press Shift Gatteryyo stop battery test v4 Battery Voltage Min voltage a Load Sink Current 20 Von Voff Operation You can set voltage value Von Voff to control the input state on off for electronic load When the input voltage reaches the Von value the load s input state is on When the input voltage reaches the Voff value the load s input state is off Wott Yon Action for set Von Voff value 1 PressCShift CMenu into menu 2 VFD displays gt CONFIG press Y key to choose gt SYSTEM SET press Enter to confirm 3 VFD displays MAX CURRENT SET des P Rey to choose gt VOLTAGE ON SET press Ente key to confirm 4 VFD displays gt VOLT ON 0 00V press numeric keys to set Von value 0 1V to max voltage value press Eeto confirm 5 Press V key to choose gt VOLTAGE OFF SET press Eteo confirm 6 VFD displays gt VOLT OFF 0 00V press numeric keys to set Voff value OV to max voltage value press CEnterDio confirm Installation Inspection Damage When you receive your electronic load inspect it for any obvious damage that may have occurred during shipmen
12. and the resolution vvill become as 1mA Specifications Input rating 0 40 C Accuracy Resolution 0 18V 0 05 0 02 FS 1mV Load 0 60V 0 05 0 025 FS 10mV Regulation 0 24A 0 1 0 1 FS 0 240A 0 2 0 15 FS CV Mode 0 1 18V 0 05 0 02 FS Regulation 0 1 60V 0 05 0 025 FS CC Mode 0 24A 0 1 0 1 FS Regulation 0 240A 0 2 0 15 FS 0 1 100 1 0 3 FS CR Mode Regulation 10 99 1 0 3 F Input current 2FS 10 1 0 3 F Input VoltagesFS 10 100 999 Q pees 1K 4KQ 1 0 8 FS CW Mode Regulation 1 0 1 FS Input current 2FS 10 Input VoltagezFS 10 1 0 196ES Current Measurement A 0 240A 0 2 0 15 FS 0 18V 02 0 02 FS Voltage Measuremen 0 60V 0 02 0 025 FS Power Measurement 0 100W 1 0 1 FS Input current2FS 10 Input VoltagezFS 10 100 1200W 1 0 1 FS Input 0 1 60V Max measurement capacity 999AH Battery testing function Resolution 10mA Timer range 1 60000sec 35 Transition Mode Range o Frequency 0 1Hz 1kHz Frequency error rate lt 0 5 Remote Operation Mode DB9 in the rear panel of electronic load could connect with RS 232 through on TTL connector The following information may help you to know how to control the input of electronic load through PC 1 Communication cable IT E131 RS232 Communication cable The DB9 interface connector on the rear panel of electronic load is TTL voltage level you can use the communication cable IT E131 to connect the DB9 interface connec
13. series number and version information 6BH Reading the information of bar code 6CH Setting information of bar code 12H The return information of command operation in electronic load If control output of electronic through PC please setting electronic load is on PC control state Command is 20H Make a calibration on input of electronic load ensure the calibration protection mode is OFF state when setting calibration information If electronic load in calibration mode user s can t change the input and operation mode of electronic load 4 From 4 byte to 25 byte are information contents 5 26 is sum code is the sum of the former 25 bytes 39 4 Communication Protocol 1 Selecting the Remote control mode 20H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 20H 4 byte Operation mode 0 is front panel operation mode 1 is remote operation mode 5 to 25 byte System reserve 26 byte Sum code Front panel operation state is not in effect if electronic load is in calibration mode 2 Selecting the input on off state 21H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 21H 4 byte Input state 0 is OFF tis ON 5 to 25 byte System reserve From 26 byte Sum code 3 Setting Read ing max input voltage 22H 23H 1 byte Start bit AAH
14. El 4Pin Trigger and Remote sensing connectors E 9 Pin COM port interface connector El Power switch 110V 220V Front Panel Annunciators I Indicates that the electronic load is vvaiting OFF input off Trigger mw an initiate and trigger to occur Indicates that the electronic load is in CC Constant current CC mode Sense Remote sensing state CV Constant voltage CV mode Error A errors have occurred CW Constant power CW mode Link In the communication state Indicates that the electronic load is in CR Resistance CR mode Rmt remote state RS 232 In the remote state only the active key is the Local key The input channel is enabled for Indicates that the shift key has been Tran Shift transient operation pressed List List mode is initiated or running Lock keyboard is locked by password Unreg The input is unregulated Key Pad POWER o Store Recall S Tran Menu 2 amp 9 B Tran C I set V set P set R set Shift nput on ot AT a Local Battery Short Trigger O through 9 are used for entering numeric values Decimal point dde The escape key It may used to exit any working state N OD EES Choosing CC mode and setup the input current of regulation current mode Choosing CV mode and setup the input voltage of regulation voltage mode
15. Rated current Operation mode change state Rated voltagd c z Software Power Limit Cc 5 Software Current Limit n gt o m se MEE ME Input current Rated current Protection Features Electronic load includes the following protection features Over Voltage If input voltage exceeds the voltage limit Load will turn OFF the input Buzzer is mooing VFD display as following OVER VOLTAGE Over Current When work in the CR or CC and CP mode input current is ascending continuously the load current will be limited by a current limit circuit Load will work in the over current protection state VFD display the information as CC When work in CV mode and transition mode and List mode Input current exceeds the current limit Buzzer is mooing VFD display the flashing current value Over Power If the input power exceeds the power limit in the normal operation mode Load will work in the over power protection state VFD displays the information as CW When work in transition mode and list mode if the input power exceeds the power limit Buzzer is mooing VFD display the flashing current value and voltage value Reverse Voltage This feature protects the load module in case the input DC voltage lines are connected with wrong polarity if a reverse voltage condition is detected Buzzer is mooing VFD display as following REVERSE VOLTAGE Over Temperature If internal power component s temperature exceed
16. Transition Pulse width setting and Transition testing mode The mix pulse width is 500uS The Max pulse width is 6S Transition Operation only could work in CC and CV mode Users can choose one of the three operation modes Continuous Pulse and Toggling mode Transition Parameter Setting Users could press Shift_ S Tramto set the transition parameter C Shift LEVEL A 0 000A Setup value A WIDTH A 0 5ms Setup time width of value A LEVEL B 0 000A Setup value B VVIDTH B 0 5ms Setup time width of value B gt CONTINUOUS Choose one of the three gt PULSE transition modes gt TOGGLED Finish transition setting Continuous Transient Operation In this mode electronic load will generates a repetitive pulse stream that toggles between two load levels Load could switch the state between two setting value value A and value B In this following example assume that the CC mode is active the applicable transient operation parameters have been set as follows For example Continuous mode current level A 5A width 2ms Current level B 10A width 3ms Testing machine input voltage is 12V 29 2 0ms 3 0ms Continuous Transient Operation Action 1 Select the operation mode CC CV CR or CP and set a proper value press to turn off the load input 2 Press C Shift D Tran set LEVEL A 5A press CEnter set WIDTH A 3ms press CEnter set LEVER B 10A press EMED set WIDTH B 2ms pressCE
17. address from the front panel or from computer 1 Address the range is from 0 to 254 default setting is 0 2 Baud rate 4800 9600 19200 and 38400 are selectable default setting is 4800 3 Data bit 8 bit 4 Stop bit 1 5 Parity None Parity None Start Bit 8 Data Bits Stop Bit 3 Frame Format Frame length is 26 bytes Details as following AAH Address Command 4 25bytes are information content Parity code Description 1 Start bitis AAH occupies one byte 2 Address range from 0 to FE occupies one byte 3 Each command occupies one byte Following is the command details 20H Selecting the Remote control mode 37 21H Selecting the input on off state 22H Setting the max input voltage 23H Reading the max setup input voltage 24H Setting max input current 25H Reading the max setup input current 26H Setting max input power 27H Reading the max setup input power 28H Selecting CC CV CW CR operation mode of electronic load 29H Reading the operation mode 2AH Setting CC mode current value 2BH Reading CC mode current value 2CH Setting CV mode voltage value 2DH Reading CV mode voltage value 2EH Setting CW mode watt value 2FH Reading CW mode watt value 30H Setting CR mode resistance va
18. byte Command 26H 27H 4 byte The lowest byte of max power value 5 byte The lower byte of max power value 6 byte The higher byte of max power value 7 byte The highest byte of max power value 8 to 25 byte System reserve 26 byte Sum code Represent power value by 4 bytes of Hex Lower bytes are in the front location higher bytes are in the later location 1 represents 1mW If setting upper value is 200 000W the hex code is 0X00030d40 then the 4th byte is 0X40 5th is 0X0d 6th is 0X03 7th is 0X00 6 Selecting Reading CC CV CW CR operation mode of electronic load 28H 29H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 28H 29H 4 byte Mode 0 is CC mode 1 is CV mode 2 is CW mode 3is CR mode 5 to 25 byte System reserve 26 byte Sum code 7 Setting Reading CC mode current value 2AH 2BH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 2AH 2BH 4 byte The lowest byte of current value 41 5 byte The lower byte of current value 6 byte The higher byte of current value 7 byte The highest byte of current value 8 To 25 byte System reserve 27 byte Sum code Represent current by 4 bytes of Hex Lower bytes are in the front location higher bytes are in current is 3 0000A Hex code is 0X00007530 NO 4 bye is 0X30 NO 5 bye is 0X75 NO 6 bye is 0X00 NO 7
19. ee ee ee 14 TRANSIENT OPERATION ccssccccsseccssseccssseecestecesseecseeceseceseeccsaeecenseecseeeccaseceesaecessseecsaeeceaeeesseeseaeees 14 CONIL US A EA EEE niet ene N 14 PUG Cities RE RE RR EDE DRR EE DR ce te ut at DR ER EE EA eg 14 Trigger Mode SES ES ES RE EE ER SG ee GE GES 15 LISTORERA ON a EES EE Ge een EG ES DE 15 TRIGGERED OPERATION AA AE EE N OE N N N N OE N 16 INPURCONTROL EE dd ad 16 Eis Oie si N ENRERE N EN N OE LO EA N 16 Iu OO EE SS EATA TEETE 16 Operation Rande ss RED np Lon tado cantada loo ANa RRRA ei RED ER ER GE ae En chert ree 17 PROTECTION FEATURES ai tt tit ce OE Gee Ge Oe see ee n ee eke teed 17 REMOTE SENSE FUNCTION ccccccccsssecessececesseecsceccsssecsseeseecsseeecssseecsaseceneeecsusecscseseeesseesenseesseecenees 18 SAVING AND RECALLING SETTINGS eie sesse ee ee ee ee ee ee ee ee Re ee Re ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 19 BATTERY TESTING iese esse ge ses ene Re se tati eat 19 VON VOFF OPERATION remei Ee EE Ee ti Dee Ee AA Ee Ee Ee 21 INSTALLATION EE MERS NR ED AE DOE EE NALS N ED or eres et es 21 INSPECTION ME EE 21 BEE RR EE ER o te EE Es 21 tems Supplied RE EE EE OE EE EE EE EE N ES 21 Aa EE DE ED EE GE GE RESERESR SERENE EAN EIN Ay 22 HPA A EG ED DEE GE es Ba ER AR N EG ee EE 22 installation o a Ee EG AA DE a e 22 BENCH OPERATION RR EE RE ER AA ara n aci ata 23 RACK MOUNTING EE EE EE yd EE EE EE EDE 23 INPUT CONNECTIONS isi mitat as 25 Power Eordis ees is Lts RSU e 25 T
20. not already done so connect the power cord to the unit and plug it in Procedure Display Explanation 25 1 Turn the unit on The electronic Load undergoes a self test when you First turn it on During self test all segments are briefly lit 2 Wait for 1s after turn on electronic load EPROM ERROR EEPROM damage or Lost data of last power off Run well if no such display system will go to the step 3 directly 3 Wait for another 2S ERROR CAL DATA EEPROM Lost calibration data Run well if no such display system will go to the step 4 directly 4 Press Shift button and AVkeys LOAD MODEL IT85XX SN XXX XXX XXX VER X XX Display the information of the product Type series number version of software 5 Press Eso button 0 000V 0 000A Display the actual input voltage and current value 6 Press AV 0 000W I 0 0004 Display the actual power value and setting value In Case of Trouble Electronic load failure to run during power on operation The test of following in this section help you to solve the possible problem when you turn on the power of electronic load Make sure if you have connected the power cord to the unit and plug it in Power switch have been pressed 1 Check the power voltage setting Work voltage of load have two type 110V or 220V Please make sure it is right voltage accordance to the voltage in your area You could chan
21. signal to trigging the electronic load 5AH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 5AH 4 to 25 byte System reserve 26 byte Sum code 33 Saving Recall user s setting value in appointed memory area for recall 5BH 5CH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 5BH 5CH 4 byte Storing area 5 to 25 byte System reserve 26 byte Sum code 48 34 Selecting Getting FIXED SHORT TRAN LIST BATTERY function mode 5DH 5EH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 5DH 5EH 4 byte Work mode 0 FIXED 1 SHORT 2 TRANSITION 3 LIST 4 BATTERY 5 to 25 byte System reserve 26 byte Sum code 35 Reading input voltage current power and relative state 5FH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 5FH 4 to 7 byte Actual input voltage value Lower bytes are in the front location higher bytes are in the later location 8 to 11 byte Actual input current value Lower bytes are in the front location higher bytes are in the later location 12 to 15 byte Actual input power value Lower bytes are in the front location higher bytes are in the later location 16 byte Operation state register 17 to 18 byte Demand state register 19 to 25 byte System reserve
22. state 0 represent not in the protection state 1 represent in protection state 38 Calibrate voltage value 62H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 62H 4 byte Voltage calibration point 1 4 5 to 25 byte System reserve 26 byte Sum code Current calibration standard points have four 1 2 3 4 39 Sending the actual input voltage to calibration program 63H 1 byte Start bit AAH 50 2 byte Address 0 OXFE 3 byte Command 63H 4 byte The lowest byte of actual voltage 5h byte The lower byte of actual voltage 6 byte The higher byte of actual voltage 7 byte The highest byte of actual voltage 8 to 25 byte System reserve 26 byte Sum code 40 Calibrate current value 64H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 64H 4 byte Current calibration point 1 4 5 to 25 byte System reserve 26 byte Sum code Current calibration standard points have four 1 2 3 4 41 Sending the actual input current to calibration program 65H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 65H 4 byte The lowest byte of actual current 5h byte The lower byte of actual current 6 byte The higher byte of actual current 7 byte The highest byte of actual current 8 to 25 byte System re
23. AOH If command is not enforce return to parameter BOH If command is invalid return to parameter COH Otherwise return to parameter 80H Receiving one frame command and verify them If verify sum is correct return the relative reading data If verify sum is wrong return the verify command 90H 53
24. High Range eise ese ee ee ee Re ke 34 SPEC IE Pd ie EE OD N EE AAN 35 REMOTE OPERATION MODE iste ss EE gegee ee n be eene bee oreo ee boe See es esse eb oreo bene ee ee ee 36 1 COMMUNICATION CABLE s2 iss ok ee ge a RE WE We ee tesi ee be Ed nde go n ges go ego eke be ee KERR ee De Ke bed ba 36 2 COMMUNICATION BETWEEN ELECTRONIC LOAD AND PC ees ee ese ee ee ee ee ee ee ee ee ee ee ee ge ee 37 ANNE EO RE EE persia at or RE RR EE ED ER AE EE 37 4 COMMUNICATION PROTOCOL ei tt te el 40 Warranty Information Certification We certify that this product met its published specifications at time of shipment from the factory Warranty This hardware product is warranted against defects in material and workmanship for a period of ONE year from date of delivery IT8500 series electronic load for use with a hardware product and when properly installed on that hardware product are warranted not to fail to execute their programming instructions due to defects in material and workmanship for a period of 90 days from date of delivery During the warranty period our company will either repair or replace products which prove to be defective Our company does not warranty that the operation for the software firmware or hardware shall be uninterrupted or error free For warranty service with the exception of warranty options this product must be returned to a service facility designated by our company Customer shall prepay shipping charges by a
25. MMIDIATE 8 Menu Operation Press Menu to indicate operation mode View the menu in VFD and using Y and A to scroll through the completely menu list as following If pressCEnter ey you could get the selected menu function Press EO pack to the previous menu selection page MENU CONFIG INITIAL CONFIG Return to the factory default setup value POWER ON RECALL Setting Power on state of Load ON When users turn on the electronic load the electronic load setup value will keep the state of last time when users turn off the electronic load OFF lt DEFAULT gt Disable this function INPUT RECALL Setup the electronic load input state in Power on ON When users turn on the electronic load the electronic load input state will keep as the last time state when users turn off the electronic load OFF lt DEFAULT gt When users turn on the electronic load the electronic load input will keep the state off KEY SOUND SET Keypad sound setting ON lt DEFAULT gt Enable key sound OFF Disable key sound KNOB LOCK SET Setup rotary knob lock state ON Lock Rotary knob OFF lt DEFAULT gt Unlock Rotary knob SHORT CUT RECALL Fast recall the data stored before ON OFF gt RANG SELECT Change the measure precision of voltage and current ON OFF gt REMOTE SENSE Setup voltage measurement Mode ON The electronic load will measure input voltage from the remote
26. NIrDto confirm 3 Transition mode now is CONTINOUS pressCEnte to confirm 4 Press CTran Dto activate the transient mode 5 Press Shift ran again to stop the transient operation 6 Press On Off the input of load is powered on Pulse Transient Operation In this mode generates a transient pulse of programmable width when pulsed transient operation is in effect For example When load receiving one trigger signal it will switch to 10A current value and taking 10ms to return the current value of 5A TWD TWD i 10ms gt 1OMS TRIG TRIG Pulsed Transient Operation Action 1 Select the operation mode CC CV CR or CP and set a proper value press to turn off the load input 2 PressC Shift GTran set LEVER A 5A LEVER B 10A WIDTH B 10ms Transition mode now is CONTINOUS Press Y till gt PULSE Press Enten set transient mode is PULSE a Press Shift Gran tg activate the transient mode Press Shift TriggeDto start another pulse Press Shift rigger get more pulse Press Shift Gran again to stop the transient operation Press OOD the input of load is powered on ON CO CI BE Ww 30 Toggled Transient Operation In this mode after transition operation start Load could change the input between the main level and the transient level when toggled transient operation is in effect For example When Load receives one trigger signal Load current will switch between 5A and 10A
27. NST VOLTAGE 2V SHORT OFF READ BACK A 0 205A 0 245A 1S E CONST CURRENT 0A SHORT ON READ BACK A 0A 0 245A 1S 16 VFD displays SHORT TEST FILE which requests saving the files edited to EEPROM automatically testing files and LIST files use a common memory area and the area can 33 contain 8 groups of automatic testing files for next usage Here the testing file could be saved in the first group press and press CEnter io confirm 17 When the edition of automatic testing file is finished press Enter two times to back the menu Fast Recall the Test File 1 Press C Shift CMenu to enter into menu VFD displayss CONFIG 2 Press V and move the menu tosLIST SET 3 Press Ente to enter into submenu VFD displayssMODE SET 4 Press Y and move the menu tosCALL TEST FILE 5 Press CEnter and recall the file edited Automatic Testing After editing the automatic testing file the automatic testing could be carried out by the below steps 1 Press Shift set to enter into automatic testing VFD displays the name of current file NAME TEST FILE1 2 PressCEnter to observe the voltage and current we inputted and also can observe the step number of testing 3 PregsC Shift TriggeD and begin to operate when the automatic testing is pause the current prolong time of one step is 25 5s pressC Shift TriggeD also can make the testing continue 4 When the automatic testing is finished the buzzer will hint by tweet buzzer VFD
28. Symbols Direct current Alternating current Both direct and alternating current Protective earth ground terminal SO A Caution refer to accompanying documents The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a VVARNING sign until the indicated conditions are fully understood and met The CAUTION sign denotes a hazard lt calls attention to an operating procedure or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the products Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met Ouick Reference The Front Panel 16 character display shows voltage and current measurements Rotary knob Power switch On Off Entry keys numeric keys Enter values Increasing or decreasing the setup values Menu commands Keypad Enable disable input Setup the current resistance and voltage modes Set and reset protection functions Scroll through front panel Input terminals The Rear Panel EED Ci ES CTS SI Eu Sara q 5 UCA III a o OO ELS may IDEE ETA ER UR ET ET HIE an ES CAS OE LE TA AXD LE ei I HOOP Os EIE II OO EI EIE ID KRIP EE OD ES CS EED El 3 Pin 1EC320 ac input connector Povver code requires ground conductor
29. URN AON CHECKOUT Sacar it 25 EERSTE eg dle EA o T 25 CHECKOUT PROCEDURE cueca 25 InCase of Trouble nyn a RS dada 26 FRONTIPANEL OPERATION 2 asses ss ds dates atles 27 EXA AAR tects ana setae sar WE AE OR ER GR AR EE 27 I set set up a constant current from O to Max current sees ee ee Re ee ee ee ee Re ee 27 P set set up a constant power from 0 to Max power ee ee ee Re ee eke ee Re ee 28 R set set up a constant resistance from 0 10 to 40000 ee RA RR ee AR Re ee 28 V set set up a constant voltage from 0 1V to Max voltage sesse esse ee ees see ee ee ee ee ee ee ee ee 28 SR Sirera is o ESE EE ed 29 SHIM Reealk EE RS EN GO GE Ge ke se GE ui Gui 29 In OR ON DUES CI eco EE De A E ER A De 29 TRANSITION TESTING OPERATION Mot es Ee DE ee N EG EE EA EE ee ee ek EE Anene Enee 29 Transition Parameter BELIG eck Sek EE Ee Ee US tetes EE Ee 29 Continuous Transient Dpefalie sis dd ec EE GE ee es cee 29 Pulse Tratsient Opera GE EE Ee me see Ee ee TAER 30 Togaled TransientO DE GR ss ss ste ss ee ER se ae PD gee eu ee ee ee be Ee N tiets 31 LIST OPCS le N AE EE EE EE OR 31 FAST RECALL FUNCTION sd N N NE Ge EE ee de ge gs de el ke Ee a 32 AUTOMATIC TESTING FUNCTION OF ELECTRONIC LOAD ees ee ee ee ee ee ee ee ee ee Re ee ee Re ee ee ee 32 Editthie TesundiEle ss AE RS EE RS RD DR ina 33 Fast Recallitne Test File EE dalt ada Gee ee Gee ee Re maleta 34 Automatic Testing A EE EE EE DE GER SS SES 34 Select the Resolution between Low Range and
30. USER S GUIDE Programmable DC Electronic Load Model IT8514F Copyright 2004 All Rights Reserved Ver1 1 APR 2006 IT8500 401 QUICK REFERENCE AE EE EE EE EE EE EE EE EE demes 6 TAE FRONT PANEL es Es ES ES EU US lt tic ee eg a 6 THE REARPANED de AR RR DR GESAG EG RG RA 7 FRONTPANEL ANNUNCIA TOR Sci 7 Ad EE A A A en 8 IMMEDIATE ACTION KEYS o RE ah 8 MENU OPERATION E 9 GENERAL INFORMATION Sesde sone toe tebe Be be bee ss bee tension De ee ee tan De Dee tens e perina antriniai noinen 11 DOGUMENT ORIENTATION EE EE N N Ee OE EE 11 GETTING STARTED MAP SS SS SER e 11 OPTIONS AND ACCESSORIES uie ees ee ee ee ee ee ee ee ee ee Re ee ee ee Re ee ee ee Re ee ee ee ee ee ee ee ee ee ee ee ee ee 11 dol SE N MR N EE mt es 11 AGCESSONGS SE EE EA ER e EER OAR EER EA EE EA ER EA EE Es 12 DESCRIPTION As DA GORDON OR AO DR Ee AE i ADD Me 12 FEATURES AND CAPABILITIES ee ese ees ee ees ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 12 FRONT PANEL CONTROLS teniment A A 12 REMOTE PROGRAMMING hinoi esse ee ese ee ee e ee Re ee ee Re ee ee tian ee ee ee ee ee ee ee 12 OPERATING MODES on ee Et ada gel 12 Constant Current CC Mode ees ee ee ER ee Re ee ER ee ee ee ee ee ee ee ee ee 13 Constant Resistance CR Mode eie ee Re RA Re Re ee RA Re ee Re ee RA ee Re ee Re ee ee ee 13 Gonstantv ollage EV Mode SE EE ar EE at 13 Constant Power CW Mode ee ee RR RA Re ee RA Re Re ee RA ee Re ee Re ee RA ee Re ee Re
31. Vto sCONST CURRENT press Eeto confirm 9 VFD shows SET 1 20 000A which means setting the current procedure Here the first sis 0 21A ore 0 0 RJ then press CEnter gt to confirm 10 Setting whether the current procedure is short circuit or not press A Wto choose one in SHORT ON or SHORT OFF Here the first step is SHORT OFF Press SHORT OFF press Entento confirm 11 Select the test number of this step pressA V to choose sREADB ACR V PRESSCEnte to confirm 12 VFD displays MIN 1 120 00V which means setting the lower limit Here the first step is 5 8V Press press Entento confirm 13 VFD displays MAX 1 120 00V which requests setting the upper limit Here the first step is 6 15V ree 0 0 0 press Eneo confirm 14 VFD shows DELAY 1 1 0 S gt which means setting the prolong time that is how long we can read the testing value after inputting the value we settled To wait for testing after the input stable the range of prolong time is 0 25 5 seconds when the setting is 25 5 seconds automatic testing will be pause only the user pressC Shift Triggen the testing will continue Here the first step is 1 second press and then pressCEnter to confirm 15 Repeat 9 14 and set the other process step by step as follows A CONST CURRENT OA SHORT OFF READ BACK V 5 9V 6 4V 1S B CONST VOLTAGE 5V SHORT OFF READ BACK A 0 205A 0 245A 1S C CONST VOLTAGE 3V SHORT OFF READ BACK A 0 205A 0 245A 1S D CO
32. W If the key board is unlocked by password directly adjust the Rotary SW button and voltage will be continually changed from the previews value according the rotation At the beginning the cursor will be shown on the last number of the value which is indicated on the VFD you can move the cursor to the first number second number etc by using number buttons and then adjust the Rotary SW to change each number and let it stay at A Please see the following description Then press I set to confirm the value 27 0 00A 0 00V 0 0W 4 33A Procedure Step1 Press Eset button Step2 Adjust the Rotary knob to change the value the operation is as the same as tem 1 Step5 Press Ente button to confirm the current value P set set up a constant power from 0 to Max power Ir8514F electronic load can be set up for a constant power Constant power setup procedure is as following Procedure Operation details VFD display Step 1 Press Pset POWER 0 0W Enter a new value by using numeric keys Step 2 or Rotary knob to adjust the voltage value POWER W Step 3 PressCEnter to confirm 0 000W P 000W R set set up a constant resistance from 0 10 to 40000 1T8514F electronic load can be setup for a constant resistance Constant resistance setup procedure is as following Procedure Operation details VFD display Step 1 PressCRrseD RESISTANCE 0 0R enter a new value by using numeric ke
33. bye is 0X00 the later location For example 8 Setting Reading CV mode voltage value 2CH 2DH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 2CH 2DH 4 byte The lowest byte of voltage value 5 byte The lower byte of voltage value 6 byte The higher byte of voltage value 7 byte The highest byte of voltage value 8 to 25 byte System reserve 26 byte Sum code Represent voltage by 4 bytes of Hex Lower bytes are in the front location higher bytes are in the later location For example voltage is 16 000V Hex code is 0X00003EB0 4th byte OXBO 5TH byte is OX3E 6th byte is 0X00 7th bytes 0X00 9 Setting Reading CW mode watt value 2EH 2FH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 2EH 2FH 4 byte The lowest byte of max power value 5 byte The lower byte of max power value 6 byte The higher byte of max power value 7 byte The highest byte of max power value 8 to 25 byte System reserve 26 byte Sum code 42 Represent power by 4 bytes of Hex Lower bytes are in the front location higher bytes are in the later location For example power is 200 000W Hex is OX00030d40 4th byte is 0X40 5th byte is OXOd 6th byte is 0X03 7th byte is 0X00 10 Setting Reading CR mode resistance value 30H 31H 1 byte Start bit AAH 2 byte Addr
34. de 3CH 3DH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 3CH 3DH a byte LIST repeat operation mode 0 is ONCE 1 is REPEAT 5 to 25 byte System reserve 26 byte Sum code 17 Setting Rea ding the number of list steps 3EH 3FH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 3EH 3FH 4 to 5 byte LIST steps 6 to 25 byte System reserve 26 byte Sum code 18 Setting Rea ding one of the step s current and time values 40H 41H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 40H 41H 4 to 5 byte Appointed one step 6 to 9 byte Current value of current step Lower bytes are in the front location higher bytes are in the later location 10 to 11 byte Time value of current step Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 12 to 25 byte System reserve 26 byte Sum code 19 Setting Rea ding one of the step s voltage and time values 42H 43H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 42H 43H 4 to5 byte Appointed one step 6 to 9 byte Voltage value of current step Lower bytes are in the front location higher bytes are in the later location 45 10 to 11 byte
35. dit every step value and time in list operation The parameter of list operation include the group file name input step setting the max steps is 1000 steps time of one step 1ms 1h and setting value of one step In CC mode dwell time range is 1ms to 6S which also have an associated value Note that lists data can only be saved in total 1000 steps memory of 4 situations GROUP Total 1000 steps 1 1000 steps 2 500 steps 500 steps 4 250 steps 250 steps 250 steps 250 steps 8 120 steps 120 steps 120 steps 120 steps 120 steps 120steps 120 steps 120 steps When receiving one trigger signal it will start the list operation until receiving another trigger signal or finish the List operation Trigger Ln 2 3 4 5 lt List count 1 gt List count 2 List sequence gt Triggered Operation The electronic load has various triggering modes to allow synchronization with other test eguipment or events Such as Keypad triggering mode Press CShift_ Trigger to trigger the electronic load TTL triggering mode Send a high pulse with a constant time more than 5m Sec to the trigger terminals in rear panel to trigger the electronic load Command triggering mode Send triggering command to the electronic load via the serial port Input Control Short On Off Load can simulate a short circuit at it
36. e For example Product s series number is 000045 product mode is 8511 software version number is V2 03 data as following AA 00 31 38 35 31 31 03 02 ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ XX XX XX XX XX 46 Reading information in bar code 6BH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 6BH 4 to 22 byte Information in bar code ASICmode 23 to 25 byte System reserve 52 26 byte Sum code Bar code rule All of bar cod of our products is distinguished by the former three characters 47 Setting information of bar code 6CH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 6CH 4 to 22 byte Product series number ASIC code 24 byte System reserve 25 byte System reserve 26 byte Sum code 48 The return information of command operation in electronic load 12H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 12H 4 byte Command calibration result 5 to 25 byte System reserve 26 byte Sum code Receiving one frame command and verify them If verify sum is wrong return the parameter 90H If setting parameter is wrong or over brim return parameter
37. eding of R35 charger process Test Method Mode Voltage V Current mA Power W Ripple counter 1 step CC 5 8 6 15 210 sA input175VAC 2 step None 5 9 6 4 0 s1 2 input175VAC 37 step es 5 205 245 4 step CV 3 205 245 s50mVpp 5 step CV 2 205 245 gr step Short circuit 0 lt 245 32 Edit the Testing File 1 PressEShift Menu into menu VFD displays gt CONFIG 2 PressV to gt LIST SET 3 Press ED into submenu press Y to gt EDIT LIST FILE 4 PressCEnte and begin to edit the automatic testing file VFD shows MAX CURR 20 000A which means setting the maximum of voltage The maximum is bigger than 3A which means CC mode is in high range here the maximum is 3A Press and press Enter to confirm 5 VFD displays MAX VOLT 120 00V which means setting the maximum of voltage the maximum is bigger than 18V which means CV is in high range here the maximum is 18V Pres 0 0 to set MAX VOLT 18V press Entento confirm 6 VFD displays MAX POWER 200 00W which means setting the maximum of power here it is150W Press to set MAX POWER 150W press to confirm 7 VFD displays TEST COUNT 2 which means setting steps of testing 20 steps are permitted at most here they are 6 steps Press to set TEST COUNT 6 press to confirm 8 Setting the mode of current procedure press A Wto choose one mode in CONST CURRENT CONST VOLTAGE CONST POWER CONST RESIS Here the first step is CC mode press A
38. er is S 1S is represented by 1 27 Disable Enable timer of FOR LOAD ON 52H Reading timer state of FOR LOAD ON 53H 1 byte Start bit AAH 2 d byte Address 0 OXFE 3 byte Command 52H 53H 4 byte Timer state 0 is disable 1 is enable 5 to 25 byte System reserve 26 byte Sum code 28 Setting communication address 54H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 54H 4 byte New communication address O OXFE 47 5 to 25 byte System reserve 26 byte Sum code 29 Enable Disable LOCAL control mode 55H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 55H 4 byte State of LOCAL button 0 disable 1 enable 5 to 25 byte System reserve 26 byte Sum code 30 Enable Disable remote sense mode 56H Reading the state of remote sense mode 57H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 56H 57H 4 byte Remote mode state 0 disable 1 enable 5 to 25 byte System reserve 26 byte Sum code 31 Selecting Reading trigger source 58H 59H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 58H 59H 4 byte Trigger mode 0 Keypad 1 External 2 command 5 to 25 byte System reserve 26 byte Sum code 32 Sending a trigger
39. ess 0 OXFE 3 byte Command 30H 31H 4 byte The lowest byte of resistance value 5h byte The lower byte of resistance value 6 byte The higher byte of resistance value 7 byte The highest byte of resistance value 8 to 25 byte System reserve 26 byte Sum code Represent resistance value by 4 bytes of Hex Lower bytes are in the front location higher bytes are in the later location If resistance value is 200 000R Hex code is 0X00030d40 4TH byte is 0X40 5TH byte is OXOd 6th byte is 0X03 7th byte is 0X00 11 Setting Reading CC mode transient current and timer parameter 32H 33H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 32H 33H 4 byte to 7 byte Setting value of current A Lower bytes are in the front location higher bytes are in the later location 8 to 9 byte Time value of timer A Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 10 to 13 byte Setting value of current B Lower bytes are in the front location higher bytes are in the later location 14 to 15 byte Time value of timer B Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 16 byte Transition operation mode 0 is CONTINUES 1 is PULSE 2 is TOGGLED 17 to 25 byte System reserve 26 byte Sum code 12 Setting Reading CV mode transient voltage and timer parameter
40. ge the voltage setting through dial the switch in the rear panel 2 Check the fuse of load If fuse is blowout please change it as following specification Model Fuse specification Fuse specification 110VAC 220VAC IT8514F T0 5A 250V TO 3A 250V 3 Location of Fuse Fuse 26 AI ETD 07 ELIO SS SD EI Front Panel Operation Example set set up a constant current from 0 to Max current Set up a constant DC current input is the first main function of programmable DC electronic load IT8514F electronic load provides two methods to set up the constant DC current input by using the number keyboard and the rotary button Please see the following operation procedure Procedure Operation details VFD display Step 1 Press Sel CURRENT 0 000A Enter the passvvord or jump the step 4 Step 2 R Ds P PASSWORD if your password for reentering Enter the original value which displayed in the LCD or enter a new Step 3 Ee CURRENT A value by using number keys or Rotary knob to adjust the voltage value Step 4 Press to confirm 0 00V 0 000A Setup the input current at 4 33A Method 1 To set up by using number keyboard Step1 Press button Step2 Press numeric button to enter the current value 4 33 Step3 Press button to confirm the current value Method 2 To set up Eset by using Rotary S
41. her bytes are in the later location 1 represent 0 1ms 16 byte Transition operation mode 0 is CONTINUES is PULSE 2 is TOGGLED 17 to 25 byte System reserve 26 byte Sum code 14 Setting Reading CR mode transient resistance and timer parameter 38H 39H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 38H 39H 4 to 7 byte Setting value of resistance A Lower bytes are in the front location higher bytes are in the later location 8 to 9 byte Time value of timer A Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 10 to 13 byte Setting value of resistance B Lower bytes are in the front location higher bytes are in the later location 14 to 15 byte Time value of timer B Lower bytes are in the front location higher bytes are in the later location 1 represent 0 1ms 16 byte Transition operation mode 0 is CONTINUES 1 is PULSE 2 is TOGGLED 17 to 25 byte System reserve 26 byte Sum code 15 Selecting Reading the list operation mode CC CV CW CR 3AH 3BH 1 byte Start bit AAH 44 2 byte Address 0 OXFE 3 byte Command 3AH 3BH 4 byte LIST operation mode Ois CC mode 1 is CV mode 2 is CW mode 3 is CR mode 5 to 25 byte System reserve 26 byte Sum code 16 Setting Reading the list repeat mo
42. librating the unit Using the front panel Front panel keys User s Guide Front panel examples Using the programming interface I User s Guide RS 232 interface Remote operation mode y i User s Guide Protocol information Controller Program and Software driver CD ROM Power View PV8500 software eat eer If you ve purchased the communication Calibration PC8500 software cable you will get it for free Active driver PD8500 OCX software Options and Accessories Options IT E151 Rack mounts kit for install one or two IT8514F load on the 19 inch rack IT E131 isolated communication cable This cable converts the electronic load s series port TTL 5V level to PC RS232 interface IT E132 isolated communication cable This cable converts the electronic load s series port TTL 5V level to PC USB interface IT E134 isolated communication cable This cable converts the electronic load s series port TTL 5V level to PC GPIB interface Accessories Power cord Users manual Software CD Rom if you buy the communication cable you ll get it for free Calibration testing report Description The IT8514F electronic load is used for design manufacturing and evaluation of DC power supplies batteries and power components and so on The electronic load contains a processor serial port connector front panel keypad and VFD and other circuits common to the other entire load module IT8514F electronic load could work in cons
43. lue 31H Reading CR mode resistance value 32H Setting CC mode transient current and timer parameter 33H Reading CC mode transient parameter 34H Setting CV mode transient voltage and timer parameter 35H Reading CV mode transient parameter 36H Setting CW mode transient watt and timer parameter 37H Reading CW mode transient parameter 38H Setting CR mode transient resistance and timer parameter 39H Reading CR mode transient parameter 3AH Selecting the list operation mode CC CV CW CR 3BH Reading the list operation mode 3CH Setting the list repeat mode ONCE REPEAT 3DH Reading the list repeat mode 3EH Setting the number of list steps 3FH Reading the number of list steps 40H Setting one of the step s current and time values 41H Reading one of the step s current and time values 42H Setting one of the step s voltage and time values 43H Reading one of the step s voltage and time values 44H Setting one of the step s power and time values 45H Setting one of the step s power and time values 46H Setting one of the step s resistance and time values 47H Reading one of the step s resistance and time values 48H Setting list file name 49H Reading list file name 4AH Selection the memory space mode for storing list steps 4BH Reading the memory space mode for storing list steps 38
44. nd shall pay all duty and taxes for products returned to our place for warranty service Our company shall pay for return of products to Customer Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer Customer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation and maintenance Assistance The above statements apply only to the standard product warranty Warranty options product maintenance agreements and customer assistance agreements are also available Safety Summary The following general safety precautions must be observed during all phases of operation of this instrument Failure to comply with these precautions or with specific vvarnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument We assumes no liability for the customer s failure to comply with these reguirements Environmental Conditions This instrument is intended for indoor use Pollution degree 2 environments It is designed to operate at a maximum relative humidity of 95 and at altitudes of up to 2000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range Before Applying Power Verify that all safety precautions are taken Note the instrume
45. nt s external markings described under Safety Symbols Ground the Instrument This product is a Safety Class 1 instrument provided with a protective earth terminal To minimize shock hazard the instrument chassis and cover must be connected to an electrical ground The instrument must be connected to the ac power mains through a grounded power cable with the ground wire firmly connected to an electrical ground safety ground at the power outlet Note Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of fumes or flammable gases KEEP AWAY FROM LIVE CIRCUITS Operating personnel must not remove instrument covers except as instructed in this Guide for installing or removing electronic load modules Component replacement and internal adjustments must be made only by qualified service personnel Do not replace components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components DO NOT SERVICE OR ADJUST ALONE Do nat try to do some internal service or adjustment unless another person capable of rendering first aid resuscitation is present Safety
46. rd 19 inch rack Rack mount kits are available as Option IT E151 The electronic load can be mounted in a standard 19 inch rack panel or enclosures using an Option IT E151 rack mount kit Rack Installation 23 X I WE PY Unit mm Elevation for Installation one electronic load in a standard 19 inch rack 24 You need to use a screvvdriver remove the two plastic ears on the two front side before rack mounting the instrument Input Connections Power Cord Connect the power cord to the IEC 320 connector on the rear of the unit If the wrong power cord was shipped with your unit contact your nearest Agent to obtain the correct cord See following figure for the part number and ordering options SHOCK HAZARD the power cord provides a chassis ground through a third conductor Be certain that your power outlet is of the three conductor type with the correct pin connected to earth ground The detachable power cord may be used as an emergency disconnecting device Removing the power cord from the ac input connector will disconnect ac input power to the unit China United States Canada Europe United Kingdom IT E171 IT E172 IT E173 IT E174 Turn On Checkout Introduction Successful tests in this chapter provide a high degree of confidence that the electronic load is operating properly Checkout Procedure The test in this section checks for proper operation of the electronic load If you have
47. reads the result of testing If the testing passed VFD reads PASS or reads FAULT Press A Y also to observe the numerical value and result of every step 5 Preset back the automatic testing Select the Resolution between Low Range and High Range You can adjust the resolution by selecting the low and high range The first step you should do is to enable this function in the menu Action 1 Press Shift D Menu enter into menu VFD displays gt CONFIG 2 Press Ente into the submenu VFD displays gt INITIAL CONFIG 3 Press V to make VFD display RANGE SELECT 4 Press Entento confirm and press V to choose ON 5 Press CEnter to confirm 6 Press to exit menu Then you can press SR 4 to change the voltage range maximum voltage If the former maximum voltage value is 120V and the resoulution is 10mV it will become 18V when you press Shift 4 and you will get 3 decimal points xx xxx compared to 2 decimal points before Wheras if the former maximum voltage is 18V you can press Shift y to make it become 120V also the resolution will become as 10mV 34 On the other hand you can press Shift v to change the currnet range maximum current If the former maximum current value is 12A and the resolution is 1mA it will become 120A when you press CShift y and you will get 2 decimal points xx xx compared to 3 decimal points before wheras if the fromer maximum current is 120A you can press Shift y to make it become 12A
48. s A V to chooses ON press CEnte key to confirm And the remote sense function has been set Wiring diagram for remote sense nput port in front pane Saving and Recalling Settings The electronic load has internal registers in which settings mode current voltage resistance transient level etc Users could use C Shift CStore D and C Shift CRecalD to save and recall the relative data as following CC value CW value CR value CV value Transition current A value Transition current B value Transition voltage A value Transition voltage B value Transition power A value Transition power B value Transition Resistance A value Transition Resistance B value Current A pulse width time Current B pulse width time Voltage A pulse width time Voltage B pulse width time Power A pulse width time Power B pulse width time Resistance A pulse width time Resistance B width time Transition current testing mode Transition voltage testing mode Transition power testing mode Transition resistance testing mode Max current value Max voltage value Max power value Action 1 Press D set a value of current or voltage press CEnter to confirm 2 Press Shift Store set a store code at random press CEnter to confirm 3 Press CShift RRecalD set the store code that you set before press CEnterDio confirm then you can get the number stored Battery Testing Experiment proves the test with load is the best method to en
49. s input by turning the load on with full scale current The short circuit can be toggled on off at the front panel using the C Shift CShort Short operation is not influence the operation setting current value When short operation is on OFF state Load back to the original setting state The actual value of the electronic short is dependent on the mode and current range that are active when the short is turned on In CC CW and CR mode the max short circuit current value is 1 2 times of the current range In CV mode short circuit operation is same as the operation of setting CV to OV Turning the Short Test on in CV mode may cause the load to draw so much current that the software current limit operates which may turn the input off Turning the short circuit on does not affect the programmed settings and the load input will return to the previously programmed values when the short is turned off Input On Off Electronic load s input can be toggled on off at the front panel Turning the input off zero current does not affect the programmed settings The input will return to the previously programmed values when the input is turned on again The Input On Off command supersedes the mode commands and Short Test On Off command Operation Range Work in the range of Rated Current Rated voltage and Rated Power The figure is as following JJ o O a lt o o Q Rated power A AOVLIOA LAdNI Input current
50. s safe limits 80 C Over temperature protection is on work Load will turn off the input and Buzzer is mooing VFD display as following OVER HEAT Remote Sense Function When work in CC CV CR and CP mode if load consumes biggish current it will cause one depressed voltage in the connection line between tested machine and terminals of Load In order to assure testing precision Load provides one remote testing terminals in the rear panel Users could test the output terminals voltage of tested machine through it Users should set the Load in REMOTE mode before using the function 4 Pin trigger and remote sensing connectors o IN di Remote Sensing SENSE and SENSE are the remote sensing inputs By eliminating the effect of the inevitable voltage drop in the load leads remote sensing provides greater accuracy by allowing the load to regulate directly at the source s output terminals TRIG A TTL compatible input that responds to external edge trigger signal A trigger applied to this input can be used to change settings voltage current resistance etc toggle between settings in transient toggle mode or generate a pulse in transient pulse mode You must set the remote sense mode in the menu before using the remote sense function Action 1 Press Shift Menu key into the menu 2 VFD displays gt CONFIG press Ente key to confirm 8 Press V key to choose gt REMOTE SENSE press CEM key to confirm 4 Pres
51. serve 26 byte Sum code 42 Store the calibration data to EEPROM 66H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 66H 4 to 25 byte System reserve 26 byte Sum code Finish the calibration operation users should save the calibration parameter in EEPROM with this command users could use these data in next power on 51 43 Setting Reading calibration information 67H 68H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 67H 68H 4 to 23 byte Demarcate information ASIC code 24 byte System reserve 25 byte System reserve 26 byte Sum code 44 Restore the factory default calibration data 69H 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 69H 4 to 25 byte System reserve 26 byte Sum code User could use the initial calibration data of factory with this command 45 Reading product s model series number and version information 6AH 1 byte Start bit AAH 2 byte Address 0 OXFE 3 byte Command 6AH From 4 to 8 byte Mode information ASIC code 9 byte The lowest byte of software version number BCD code 10 byte The highest byte of software version number BCD code 11 to 20 byte Product series number ASIC code 21 to 25 byte System reserve 26 byte Sum cod
52. steps 5 Press to confirm setup step 1 current 3A Press to confirm setup step 1 width 6ms Repeat 7 and 8 operation set current and width of one step OA 5ms 2A 4ms 6A 2ms 0A 5ms Press to confirm Menu STORE LIST FILE 1 save file in group1 Move cursor to Mode Set press to enter into the next step menu to set mode is lt LIST MODE gt Press to confirm Press ES Press On Off make Load in ON state Press C Shift Trigger make list operation run or stop Stop the list operation mode Move cursor to LIST SET press Enter move cursor to Mode Set in option menu press CEnter enter into next step menu Select mode is lt FIXED MODE gt Press to confirm Fast Recall Function You recall 10 groups numbers very conveniently which were stored before Action Press Shift gt CMenu Press V to CONFIG press Ente into submenu press Y to SHORTCURT RECALL Press Enten select S ON and pressCEnter to confirm Press two times and quit the menu Press and you can get the first group number press you can get the second group number Press you can get the tenth group number And if there is not stored number VFD will show NO EEPROM DATA Automatic Testing Function of Electronic Load You test various parameters of power supplies at different loads Now we take a kind of charger as an example to explain the usage of the automatic testing of the electronic load The test proce
53. sure the battery whether work well or not Only with the correct load testing the battery can be confirmed if it was being the expectant life curve location The electronic loads can be used to test any type of the battery nowadays As the accumulator is used by any sheltered equipment or the uninterrupted service system it is necessary to use the load testing Because the battery nearly is the lowest reliability component so it must use the load testing periodic ensure the security of the battery Capability test Electronic load uses CC mode to do the capability test Make a program to set the voltage in off state The accumulator have too low voltage electronic load intermits test if system checks the accumulator which is near to one rating or in insecurity state In testing procedure you could see the accumulator voltage discharge current electronic load power and spare capability of accumulator If connecting with PC software discharge curve could be displayed in window This test can reflect the reliability and using time of accumulator So its necessary to do the test before you change another new accumulator Operation 1 Turn off the input of electronic load then connect the load with battery 2 Press Eset on the panel VFD displays CURRENT A set discharge current value and press CEnter to confirm Note the discharge current should not be more than the current that the battery can supply 3 Press C Shift Battery
54. t If there is damage notify the shipping carrier and nearest Agent office and Support Office immediately Items Supplied The following user replaceable items are included with your electronic load Item Part Number Description Power Cord IT E171 Users will get one of the power IT E172 cords appropriate for your location IT E173 21 IT E174 Contains installation checkout and User s Guide front panel information and Software CD Rom Programming information Calibration Report The Instrument calibration report Cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally To prevent electric shock unplug unit before cleaning Location The outline diagram in following figure gives the dimensions of your electronic load The electronic load must be installed in a location that allows sufficient space at the sides and back of the unit for adequate air circulation Installation Dimension 429mmW x88 2mm H x 354 6mm D B 0000 DOOD L Ll 22 Outline Diagram Unit mm Bench Operation A fan cools the electronic load by drawing air through the button and sides and exhausting it out the back Minimum clearances for bench operation are 25 mm along the sides Do not block the fan exhaust at the rear of the Load Rack Mounting The IT8514F electronic load can be mounted in a standa
55. tant current CC mode constant voltage CV mode or constant resistance CR mode and constant power CW mode Features and Capabilities e High accuracy and high resolution e Capable to work with constant current CC constant voltage CV constant resistance CR mode and constant power CW operation e Serial port interface DB9 RS232 port e Triggered input and measurement functions e Within the controlled keypad in the front panel e Built in pulse generator for continuous pulsed and toggled transient mode operation e Over voltage over current overpower and over temperature protection e Electronic load calibrate by Software e Fan speed control by temperature e VFD display e Short circuit test e Battery testing function Front Panel Controls The front panel has keyboard controls for setting the input voltage current and resistance The panel display provides digital readouts of a number of functions including the inputs Annunciators display the operating status of the electronic load Remote Programming The electronic load may be remotely programmed from the computer via the IT E131 isolated communication cable Operating Modes The four modes of operation are 1 Constant current CC 2 Constant voltage CV 3 Constant resistance CR 4 Constant power CW Constant Current CC Mode In this mode the electronic load will sink a current in accordance with the programmed value regardless of
56. the input voltage CC mode can be set with front panel keys The CC mode parameters are discussed in the following paragraphs l CURRENT LOAD CURRENT SETTING gt LOAD INPUT V VOLTAGE CONSTANTCURRENT MODE Constant Resistance CR Mode In this mode the module will sink a current linearly proportional to the input voltage in accordance with the programmed resistance The CR mode can be set at the front panel The CR mode parameters are described in the following paragraph LOAD SLOPE CURRENT RESISTANCE SETTING LOAD INPUT V VOLTAGE CONSTANT RESISTANCE MODE Constant Voltage CV Mode In this mode the electronic load will attempt to sink enough current to control the source voltage to the programmed value The module acts as a shunt voltage regulator when operating in the CV mode The CV mode can be set at the front panel The CV mode parameters are described in the following paragraphs V VOLT LOAD INPUT SETTING VOLTAGE LOAD CURRENT I CONSTANT VOLTAGE MODE Constant Power CW Mode In this mode the electronic loads will consumption power accordance with the programmed value regardless of the input voltage The CW mode can be set with front panel keys The CW mode parameters are discussed in the following paragraphs V LOAD INPUT V2 VOLTAGE y3 POWER SETTING 12 13 l LOAD CURRENT CONSTANT POWER MODE Transient Operation Transient operation enables the elec
57. tor of the electronic load and the RS 232 interface connector of computer for the communication IT E131 communication 3 El um ce TE IT E132 USB Communication cable The DB9 interface connector on the rear panel of electronic load is TTL voltage level you can use the communication cable IT E132 to connect the DB9 interface connector of the electronic load and the USB interface connector of computer for the communication IT E132 communication caple 36 IT E134 GPIB Communication Cable The DB9 interface connector on the rear panel of electronic load is TTL voltage level you can use the communication cable IT E134 to connect the DB9 interface connector of the electronic load and then connect GPIB interface connector of IT E134 cable and computer with GPIB IEEE 4888 line for the communication IT E134 outer communication adapter COM interface of Electronic load GPIB line IT E134 ISOLATED Serial IEEE 488 Controller E d Note Forbidden to connect DB9 connector in electronic load directly with PC or other RS232 port 2 Communication between electronic load and PC Before using the remote operation mode please make sure that the baud rate and communication address in electronic load are the same as in the computer software otherwise the communication will fail you can change the baud rate and communication
58. tronic load to periodically switch between two load levels as might be required for testing power supplies A power supply s regulation and transient characteristics can be evaluated by monitoring the supply s output voltage under varying combinations of load levels frequency and duty cycle Transient operation can be turned on and off at the front panel or PC via the IT E131 isolated communication cable Before you turn on transient operation you should set the desired mode of operation as well as all of the parameters associated with transient operation Transient operation may be used in the CC CR or CV or CW modes and can be setup in continuous pulsed or toggled operation mode Continuous Generates a repetitive pulse stream the toggles between two load levels and change the state between value A and value B H gt gt 2 0ms 3 0ms Continuous Transient Operation Pulse Switch to value B as receiving one trigger signal taking the pulse time TWD of value B Load will return to Value A TWD Oms TRIG TWD S Oms te TRIG Pulsed Transient Operation Trigger Mode Switching the state between value A and value B once receiving a triggering signal SAT To 7 TRG Toggled Transient Operation List Operation List mode lets you generate complex sequences of input changes with rapid precise timing which may be synchronized with internal or external signals List operation can be changed by e
59. ys or Step 2 Rotary knob to adjust the resistance value RESISTANCE R Step 3 Press Enter to confirm 0 000W R 0000R V set set up a constant voltage from 0 1V to Max voltage IT8514F electronic load can be setup for a constant voltage Constant voltage setup procedure is as following Procedure Operation details VFD display Step 1 Press VOLTAGE 1 500V enter a new value by using numeric keys or Step 2 eee Ue ee VOLTAGE V Rotary knob to adjust the resistance value Step 3 PressCEnter to confirm 0 000W V 3 000V 28 Shift Store Procedure Operation details VFD display Step 1 Press Shift anqCStore STORE 1 Step 2 Press Enter to confirm Store the relative data Shift Recall Procedure Operation details VFD display Step 1 PressC Shift ang Recall RECALL 1 Step 2 Press Enter to confirm Recall the saving data In On Off input setting Use ONO to change the state of electronic load Switch on to off state by press OOD Transition Testing Operation Users could switch between the two different current and voltage in the transition mode it could test the transition specialty of power supply Users could use front panel or communication interface CTRAN ON AND TRAN OFF to make it work or not please setting parameters before transition operation Include Transition setting value Constant pulse width setting and
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