3700 SERIES USER MANUAL 3700 Series
Contents
1. 2 3 11 Exit Select Exit to exit the menu operation 3700 Series Programmable DC Electronic Load 13 VERSION 2 0 2011 03 14 3700 SERIES USER MANUAL ElectronicLoad Software ElectronicLoad is a free software which allow the user to monitor and control the ATTEN 3700 series electronic load 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Chapter 1 Software Installation 1 1 Connect the electronic load to PC With the optional communication adapter you can connect the 3700 load to your computer through RS 232 USB or RS 485 port Connect the 3700 to a RS 232 port with the 3311 adapter to a USB port with the 3312 toa RS 485 with the 3314 If your computer doesn t have an RS 485 port you may choose the 3313 RS 232 gt RS 485 adapter Fig 1 1 Connect the electronic load to PC 1 2 Installation 1 2 1 Insert the ATTEN software CD into the CD ROM drive double click My Computer gt ATTEN CD gt Eload gt Setup exe to start the installation the Fig 1 2 will be displayed Programmable DC Electronic Load a N Elect Setup is preparing the InstallShield R Wizard which wall guide you through the rest of the setup process Please wait Fig 1 2 The Initialization of the Installation 3700 Series Programmable DC Electronic Load 15 VERSION 2 0 2011 03 3700 SERIES USER MANUAL 1 2 2 The Welcome dialog box displays press NEXT to continue2. wT 24 PROGRAMMABLEDC K J ELECTRONIC LOAD 3700 SERIES F A user s manual ATTEN Suc VIA ew FEA e Ra Se O i L Cs Co E S T La p e 3700 SERIES USER MANUAL SAFETY GUIDE This manual contains the precautions necessary to ensure your personal safety as well as for protection for the products and the connected equipment These precautions are highlighted with a triangle WARNING symbol in this manual and are marked according to the danger levels as follows Danger A It indicates that if appropriate precautions are not taken serious incidents of personal injuries and deaths or significant damages or losses to the properties will be caused Caution A It indicates that if appropriate precautions are not taken injuries or losses of properties will take place Note Remind you to pay particular attention to the important information related to the products disposal of products or the specific part of documents Warning A Only qualified personnel are allowed to debug and operate this equipment The qualified personnel are specified as those personnel who carry out commissioning grounding and apply the volume identification to the circuits equipment and systems according to the available safety practices and standards Note A Only when this product is transported stored assembled and installed in a proper way and operated and maintained according to the recommenda
3. The programming process is completed Press ESC to return to the main menu press Start to run the program If you want to store this program for later use please see 2 2 4 2 3 8 Save Option This function is used to save the last load setting current power and resistance before switching off the 3700 When this option has been set every time the user switches on the 3700 the previous load setting will be restored automatically Select the Save Option function the LCD will display Use the UP and DOWN keys or the rotary knob to change the selection Save LP R then press OK to confirm Select Save I P R and load setting will be L saved before the unit is switched off and will be restored automatically gt Dee when switched on the next time Select Don t Save def represent not to save current load setting 2 3 9 Lock the keyboard This function is used to lock the keyboard keep the load setting from unauthorized change Only the person with correct password is allowed to operate the 3700 Select the Key Lock function the LCD will display Set Password Enter a 4 numbers password then press OK to confirm 2 3 10 Load Default This function is used to restore all the parameters to the factory setting Select Load Default function LCD will display Don t Load Select Load Default and press OK to restore to the factory setting Load Default
4. 9 Copy Files Software installation is complete when finished 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Chapter 2 Introduction 2 1 Running the program 2 1 1 To run the ElectronicLoad program select Start gt Program gt ATTEN gt Eload and click E3710A or E3711A to run the program amp Qa m WR office ZR Fig 2 1 Start the program 2 1 2 The ElectronicLoad startup pattern 3700 Series Programmable DC Electronic Load 19 VERSION 2 0 2011 03 3700 SERIES USER MANUAL Programmable DC Eg onicjDag RT Fig 2 2 ElectronicLoad Startup pattern 2 1 3 The ElectronicLoad Main Window ElectronicLoad a 10 xj m A f gt E A PEE 2 3710A DC Electronic Load 0 360 200W 4 RE mmm 2 E37104 Load Mods z E 1 O d J 0 f 15 250 y pl IIE y y 4 150 e 2 s 100 EL i 0 3 0 200 0 gt 500 DA OW 001 ohm I SETTING P SETTING R SETTING Voltage Curve ElecLoad E3710A ada 5 Normal O normal Sending 2006 3 9 BRAM 02 33 44 PM y 20 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Fig 2 3 The ElectronicLoad Main Window 2 2 The ELoad List The Eload list lists all registered electronic load on the computer To make the ElectronicLoad control your load choos
5. Option Key Lock Load Default Exit You can exit the menu operation at any point by pressing the ESC key 2 3 1 Setting the maximum current When you select the Maximum Current function the LCD will display Max Curr A Set the maximum current value by using the number keyboard or the NOE rotary knob then press OK for confirmation 2 3 2 Setting the maximum power When you select the Maximum Power function the LCD will display Max Power W Set the maximum power value by using the number keyboard or the News rotary knob then press OK for confirmation 2 3 3 Setting Minimum Input Voltage This function is used to set the minimum input voltage when the input voltage is lower than this value the 3700 electronic load will automatically stop This function is used to discharge batteries When the battery s voltage drops down to the set value the load switches off automatically keeping the battery from over discharge When you select Min Input Volt function the LCD will display Min Volt V Set the minimum input voltage by using the number keyboard or the News rotary knob then press OK for confirmation 2 3 4 Setting Baud Rate 10 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL This function is used to set the communication baud rate When you select the Baud Rate function the LCD will dis
6. Step 1 Press R set button Input Password Enter the password if the keyboard isn t locked please Input Password Step 2 go to step4 oo Press the OK button the original set value will be Set Resis 200 0 Q Step 3 displayed on the LCD It will return to step 2 if your ew password is wrong Enter the new resistance value with the number keypad Set Resis 200 0 Q or rotate the dial to adjust the value Sep 2 7 New 50 00 Press R set button for confirmation Set Resis 50 00 Q Step 5 New 50 00 Step 6 Press ESC to go back to the main menu Y ou can exit the resistance set operation at any point by pressing the ESC key 2 2 4 Store a program The 3700 Series electronic load provides a program mode for dynamic testing The user can program the 3700 series electronic load and define the load values current power resistance and duration of every step For more 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL details about the programming operation please refer to 2 3 7 User s program may be stored in the 3700 s nonvolatile memory for later use Up to 9 programs can be stored in the 3700 To store a program please follow this operation procedure Procedure Operation details LCD display Stepl Press Store button SAVE 1 Ss Enter the program number 1 to 9 by using the number SAVE tep key or the rotary knob Press the OK
7. button for confirmation It will return Step 3 9 to Step 2 if the number is out of the range You can exit the store operation at any point by pressing the ESC key 2 2 5 Recall a program To recall a program stored in the 3700 please follow this operation procedure Procedure Operation details LCD display Step 1 Press Recall button RECALL 1 Sies Enter the program number 1 to 9 by using the number RECALL tep key or the rotary knob Suus Press the OK button for confirmation It will return tep to Step 2 if the number is out of the range You can exit the recall operation at any point by pressing the ESC key 2 2 6 Start a program Press Start button to run the current program 2 2 7 Stop a program Press Stop button to stop the running program 2 2 8 Load On Off The load s input can be toggled on off through the Load On Off key 2 3 Menu operation The Menu operation offers some setting and adjusting functions The operation and functions are as following 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Procedure Operation details LCD display Step1 Press Menu button f Maximum Current The LCD displays the menu functions Use the UP and l Maximum Power Min Input Volt Band Rate Address Step 2 Knob Enable DOWN keys to select a function then press OK for confirmation Program Save
8. A for 5 seconds 3700 Series Programmable DC Electronic Load 11 VERSION 2 0 2011 03 3700 SERIES USER MANUAL Step3 3A for 10 seconds Repeat running step to step3 Programming procedure is showed below 1 Select Program Set from menu operation the LCD will display Constant Curr Use the UP and DOWN keys or rotary knob to select Constant Current Constant Power 7 mode and press OK to confirm Constant Resis 2 LCD will display Step Number Input the program length 3 and press OK to confirm New 3 LCD will display Step1 Set 0 00 Input the current value 1 A then press OK to confirm New 4 LCD will display Step Time 1s Input the time value 2 s then press OK to confirm New 5 LCD will display Step 2 Set 0 00 Input the current value 2 A then press OK to confirm New 6 LCD will display Step Time 1s Input the time value 5 s then press OK to confirm New 7 LCD will display Step 3 Set 0 00 Input the current value 3 A then press OK to confirm New 8 LCD will display Step Time 1s Input the time value 10 s then press OK to confirm New 12 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL 9 LCD will display One Time Select Repeat then press OK to confirm Repeat
9. E ElectronicLoad Installation Fig 1 3 The Welcome dialog box 1 2 3 The License Agreement dialog box displays Click Yes to accept the License Agreement and proceed with the installation process Note If you do not want to accept the License Agreement click No to abort the installation process brt ElectronicLoad Installation Fig 1 4 The License Agreement dialog box 1 2 4 The User Information dialog box displays Enter your name and your company s name then click Next ee man ElectronicLoad Installation 16 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Fig 1 5 The User Information dialog box 1 2 5 The destination folder dialog box displays The default folder is C Program Files ATTEN ELoad You may click Browse to select other installation path ElectronicLoad Installation Fig 1 6 The destination folder dialog box 1 2 6 The installation option dialog box displays Select Typical to install all components or select Custom to select installation components Fig 1 7 The installation option dialog box 1 2 7 The Select Program Folder dialog box displays Specify a program folder or leave the default folder then click Next 3700 Series Programmable DC Electronic Load 17 VERSION 2 0 2011 03 18 3700 SERIES USER MANUAL Fig 1 8 The Select Program Folder dialog box 1 2 8 Copy the files to your hard disk Fig 1
10. ain functions 1 Constant current mode 2 Constant power mode 3700 Series Programmable DC Electronic Load 5 VERSION 2 0 2011 03 3700 SERIES USER MANUAL 3 Constant resistance mode 4 Store a program 5 Recall a program 6 Start a program 7 Stop a program 8 Load On Off 2 2 1 Constant Current Mode In constant current mode the electronic load will sink a constant current in accordance with the set value regardless of input voltage The current value can be set with the keyboard and or rotary knob Please see the following operation procedure Constant current setting procedure Procedure Operation details LCD display Step 1 Press I set Input Password Enter the password if the keyboard isn t locked please go Input Password Step 2 to step4 oad Press the OK button the original set value will be Set Curr 2 00A displayed on the LCD It will return to step 2 if your Step 3 New password is wrong Enter the new current value with the number keypad or Set Curr 2 00A Step 4 rotate the dial to adjust the value New 3 00 Press I set button for confirmation Set Curr 3 00A Step 5 New 3 00 Step 6 Press ESC to go back to the main menu You can exit the current set operation at any point by pressing the ESC key For example set constant current to 3 12A 1 Setting by number keyboard Stepl Press I set button 3700 Series Programmable DC Electro
11. aptor 3314 isolated TTL to RS485 adaptor Mounting rack 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL 1 3 Features LCD display with backlight N High resolution measurement U CC CP CR mode ES Number keypad and rotary knob u Multifunction menu an Over voltage over current over power over temperature polarity reversion protection N 10 steps program oo Compact and light weight NO Can be used in parallel connection 10 Can be controlled by PC 1 4 Dimensions and Structure 1 4 1 Dimensions unit mm Fig 1 1 Dimension of 3700 Series Programmable DC electronic load 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 1 4 2 Structure 1 4 2 1 Front view Front panel is for users to operate and there is one LCD display one number keypad and one rotary knob Please see the following pictures 1 LCD display 0 000A 0 000 WATTS 0 0W 0 000A CC Fig 1 3 LCD Display of 3700 Series electronic load 2 Arrangement of the Keyboard In general the keyboard will perform the function of the black words Ist But in the 2nd mode it will perform the function of the words in blue fuNER S FUNCTION ME CARET Store Recall R set Li LJ EH L3 ix Start Menu I set a 2 Ls Cs E Stop Out on off P set LAU LU L J Se Fig 1 4 Keyboard of 3700 Se
12. connected electronic load Press OK to confirm 2 9 3 Setting Recording Interval Fig 2 14 Setting Recording Interval window 2 10 Programming Window ElectronicLoad allows user to make an own program to control the 3700 load User can select the load mode and define load value current power resistance and duration of each program step 24 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Click the button the Program window will be displayed fam S u xi E Step1 Data Step1 Time Step2 D ata Step2 Time Step3 Data Step Time Step4 Data Step4 Time Step5 D ata Step Time L 00 00 L 00 L 00 L DO 10 00 0 00 0 00 0 00 0 00 StepB Data Step6 Time Step7 D ata Step Time StepS D ata StepS time Step9 D ata Step3 Time Step10 D ata Step10 Time E 0 00 00 0 00 00 0 00 00 0 00 oo 0 00 00 Run Steps Program State ElectronicLoad Mode 2 2 A x E C Repeat Constant Current Ok S E Constant Power BILL UB Cancel 8 8 C One Time Constant Resistor 1o 10 Fig 2 15 Programming window Select an Electronic Load Mode enter the load value and the duration of each program step The maximum program length is 10 steps But user may decided only run part of them Use the Run Steps push bar to decide how many steps you want to run Program State is used to define whether repeat to run this
13. ctue ud deut ee eer bem aat EM voa vt bebe Mrd t seven islets tts 2 2 3 Recall a program eee eie E erret ee Eti euer ere Rise RR A HEREENeT E iie pU UE 2 2 0 5tart a PIO STAM he co to eu eed eee ECT RR outa ter Swale ntes aloe tees arat ed ee rectus o dere tote Eie Yes as 2 2 4 SLOP d PLO STAM sy eere ere Seiad ane re eee sais oie vel aphid nner ober cua Eat Ta aR ab sy pde sk ed ER tha 0 E Le Ta stom epa 2 2 8 Load On Off NA en iru x eae Sa Abe t 2 3 Menu ESCU ETE 2 3 Setting the maximum current 4 0 04 ooo Beet Aa iia 10 2 3 2 Setting the maximum POWET s erei i A A eh iar eed aes 10 2 3 3 Setting Minimum Input Voltage oooococccncncnonononcncnnnnnonononono nono ne nono memes TT 10 2 3 4 Setting Batid Rate is ede iei E A AAA ia ve Rte ene breaded 10 2 3 3 Setting Address Dl Mini a 10 2 3 6 Enable disable the Rotary mobi A ch A Ai 11 2 37 A A A E O RO O 11 ASS RO ANN 12 2 3 0 LOCK the Keyboard oni A ad 13 2 3 10 Load S A ra ARTE e dur Ov A nr teh dr e mte erae pe 13 2 9 ED E cao tt oo Poe E E MALE EU e edel ETE 13 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 vi 3700 SERIES USER MANUAL PART 2 Electronic Load SoftWare ooocccccccnonononononnnnnnnnnnnanocconnnnnnnnannnnocnnnnnnnnananonornnnnnnnnnananincnanananonoss 14 Chapter 1 Software Installation sese s sese see eeee esee eese hen nnne sush sss sh esses esses esee esses sess sese ses enn enun 15 1 1 Co
14. 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 6 Do Not Substitute Parts or Modify Instrument Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a qualified dealer for service and repair to ensure that safety features are maintained II Connecting the power line 1 Inspect the power selection switch on the back panel to assure if the selected voltage is the same as environment power voltage If not please refer to the notice around the power plug 2 Before connecting the power supply please be sure that the switch on the front panel should be in the off position 3 Connect the power cable to the AC in the power supply and the 3 connector plug Please be sure that the AC power supply is grounded 4 Press the switch on the front panel to switch on the instrument and you can start to use it 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL III Fuse 1 The fuse is at the position of power input part on the back panel for the purpose of avoiding failure brought by using wrong voltage Please pay attention to the following items when you change the voltage input and the fuse 2 Before changing the voltage and fuse pl
15. e amp Modify button To modify a load s Query parameters select the load from the Eload Registration Records then click the button To query a load click the button then enter the load name you want to query Attention after the Add Modify Delete operation the program must restart so that the modifications may take effect be shown PI x program G Parameters have been modified you must restart the program the Start The following dialog box will click Yes to close the then restart the program from menu 26 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Fig2 18 After Add Modify Delete operation the program must restart 2 12 Data Report Click the El button the data report window will be shown Data Report E E xj Query Name Current zi To T Resistance Z To o Voltage xi To G Date 2002 9 26 Y To Power o z To Z T Time 00000 To x Excel ti Search Fig2 19 The Data Report window To search set the query condition and then click the Search button Click the Report button to watch the report Click the Excel button to export the report in Excel format To delete historic data click the Clear button 3700 Series Programmable DC Electronic Load 27 VERSION 2 0 2011 03 28 3700 SERIES USER MANUAL Quit quit to
16. e the load you want to use from the Eload list _ 37104 Fig 2 4 The Eload List 2 3 The Load Mode List From the Load Mode list you can select Load Mode Constant Current Constant Power Constant Resistance Load Mode Constant Current Fig 2 5 The Load Mode List 2 4 Control Switch The Load On Off switch is to turn on off the electronic load the Self PC Control switch is to set who control the electronic load the PC or the load itself 1 d 1 O st Fig 2 6 Control switch 2 5 The Tool Buttons On the top left of the main window there are 9 tool buttons Start Start communication La Stop Stop communication a Setting setting COM Port and recording interval Program Setting a Program Run Program Run a Program Stop Program Stop Running Program Eload Setting Setting load parameters Report Data report sa 3700 Series Programmable DC Electronic Load 21 VERSION 2 0 2011 03 3700 SERIES USER MANUAL 4 Quit Quit the ElectronicLoad program 2 6 Keypad and Rotary dial I SET P SET R SET U Z J L 0 30A 0 150 W 001 5002 bh B wu fo e Fig 2 7 Current Power Resistance setting dial To quickly modify a parameter Current Power Resistance put the mouse on the red point of the dial and rotate To accurately set a parameter use the keypad Fig 2 8 Keypad Set Current Press I set input the current
17. ease be sure that the AC power is switching off and be sure that there is no other equipment connected to this instrument 3 Put a screwdriver into the fuse mounting press it and the fuse mounting will pop up 4 Pull out the fuse change it according to the label beside the power input plug Warning To avoid damaging the instrument please be sure to change a suitable type fuse 3700 Series Programmable DC Electronic Load 111 VERSION 2 0 2011 03 1v 3700 SERIES USER MANUAL 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Programmable DC Electronic Load 3700 SERIES Table of Contents PART1 3700 Series Electronic Load Chapter 1 General Introduction ss sese sss sss ss ses es sse esse ennenen eenn 1 STR Ta TS TS TTT I 2 Specification AA T SR AR EEEE A O O E TTT 1 4 Dimensi n and Structure 2 ted EE cage td IE NUMEN ER x da oca I PANI DM tm 1 4 2 We BEOBE VIE Wis on bise oe ede A et etaed eto ue due A RO 1422 Back Wiew IEEE Chapter 2 Operation lE 2 1 Connect the power supply to the electronic load 1 Zs varra cece Te Tc 52 7 e nen e nen e bene e e danS NRT 2 2 Main fUCHONS id ed do dada relaciona an 2 2 1 Constant Current Modernismo ae E UE ad tree Poe bo cee be ite parent pei desig ts 2 2 2 Constant Power Mode rraio oana rise Siero eor nd stet rte ep exem Eee pret deste teres 2 23 Constant Resistance Mode it t op oe v E epi eere alerted De DAE SLOPE d PLO SLAM A d ie
18. neral Introduction 1 1 General Introduction ATTEN 3700 series electronic load is a single input programmable DC electronic load It provides a convenient way to test DC power supplies and batteries It offers constant current mode constant resistance mode and constant power mode Program operation and control by PC is also available The backlight LCD numerical keypad and rotary knob make it much easier to use It is an essential instrument for designing testing and manufacturing of many suitable products 1 2 Specifications Model 3710A 3711A Number of Input 1 1 Input Voltage 0 360V 0 360V Input Power 0 150W 0 300W Input Current 0 30A 0 30A a ee 0 000 3 999V 0 2 3mV 4 00 35 999V 0 2 30mV 36 0 360 0V 0 2 300mV Current Accuracy 0 000 2 999A 0 2 3mA 3 00 30 00 0 2 30mA Max Resolution Voltage 1mV Current 1mA Minimum Conductive Resistance 0 08 Q Ripple lt 10mVpp Communication Interface RS232 RS485 USB TEF Free application software ElectronicLoad ActiveX control support VC VB DELPHI LABVIEW Program Memory 9 programs 10 steps each Protective Mode Over voltage over current over power over heat polarity reverse AC Input 110 220V AC switch able 60 50HZ Weight 5 0kg Accessories Software users manual AC power cable handlebars 3311 isolated TTL to RS232 adaptor 3312 isolated TTL to USB adaptor Optional Parts 3313 isolated RS232 to RS485 ad
19. nic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Step2 Enter the password by using the number keyboard if the keyboard isn t locked please go to step4 Step3 Press OK button if the password is wrong please go to step2 for reentering Step4 Press 3 1 and 2 button to enter the current value Step5 Press I set button to confirm the current value 0 0004 0 000V OF 0 0W 3 12A CC 2 Setting by Rotary Knob 1 If the keyboard isn t locked press I set button then directly rotate the Rotary knob the current value will be continually changed from the previous value according to the rotation At the beginning the cursor will be shown on the last number of the value which is indicated on the LCD you can move the cursor to the first number second number etc by using 4 and gt buttons and then rotate to change each number and let it stay at 3 12 A 2 If the keyboard is locked Stepl Press I set button Step2 Enter the password by using the number keyboard Step3 Press OK button if the password is wrong please go to step2 for reentering Step4 Rotate the Rotary to change the value the operation is the same as item 1 Step5 Press I set button to confirm the current value 2 2 2 Constant Power Mode In constant power mode the load s current will increase automatically if the input voltage is decreased or vice versa so
20. play 4800 bps 9600 bps Select the Baud Rate by using the UP and DOWN keys or the rotary 19200 bps knob then press OK for confirmation 38400 bps Def 2 3 5 Setting Address 0 254 This function is used to set the address of the load To communicate with the computer or other equipment the 3700 load must be assigned an address When you select Address set function the LCD will display Set Address Set the address by using the number keyboard or the rotary knob and then press OK for confirmation The valid address range is from 0 to b m 254 2 3 6 Enable disable the Rotary knob This function is to enable or disable the rotary knob Enable Def Use the UP and DOWN keys or rotary knob to select and press OK to confirm Disable 2 3 7 Program 3700 Series electronic load provides a program mode for dynamic testing The user can program the 3700 series electronic load and define the load values current power resistance and duration of each program step To program the 3700 please follow these 4 steps 1 Select one working mode constant current constant power constant resistance 2 Setthe length of the program 3 Setthe load value current power or resistance value and duration time of each step 4 Select program running mode one time or repeat For example you need to set the following program Constant Current mode Stepl 1A for 2 seconds Step2 2
21. program When finishing press OK to store the program and go back to the main window Press button to run the program press button to stop the program prog D ES 2 11 Eload setting Click the i button the Eload setting window will be displayed eLoad Setting ELoad Registration Records lx o ELoad Name ELoad Address 30 1 E3710A 200 500 ziAdd 7 Delete 3 Modify rei Query ETHER Fig 2 16 The Eload Setting window The Eload Registration Records show the parameters of all registered load 3700 Series Programmable DC Electronic Load 25 VERSION 2 0 2011 03 3700 SERIES USER MANUAL To add a new load click the 7 Add E button Rice dte P E Max Current A 30 Max Power W 200 Max ae 500 vo Fig 2 17 Add new load window Add Modify inl xl ELoad Parameters ELoad ID ELoad Name E37104 Enter the Eload Name Address and the maximum value of current power resistance then press OK to confirm Note the Eload ID is assigned by the software The Parameter Explanation Parameter Explanation Range Eload ID ID Eload Name Name ASCII Eload Address Address 0 254 Max Current Maximum Current 0 30A Max Power Max Resistance Maximum Power Maximum Resistance 0 150 W 300W 0 500 Q 3 Delete To delete a registered load select the load from the Eload Registration Records then click th
22. ries DC electronic load 3700 SERIES USER MANUAL Fig 1 2 Front view of 3700 Series DC electronic load The 1st line Current voltage On Off state The 2nd line Power load setting value working mode CC CP CR represent constant current constant power constant resistance mode 0 9 The number keys Load on off Load ON OFF switch R set Setting resistance value I set Setting current value P set Setting power value Store Store current program Recall Recall a saved program Start Start a program Stop Stop running program Menu Menu function operation A The up moving key WV The down moving key 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL 3 Rotary knob and function keys 4 The left moving key K The right moving key E ESC Escape key y E L OK Confirmation key ADJUST Rotary knob The rotation dial ES ww Fig 1 5 Rotary knob and function keys 1 4 2 2 Back view Communication interface Power supply plug AC line voltage switch Fig 1 6 Back view The fuse can be changed easily by using a small flat screw driver Please use a fuse within the range of 0 3 0 5A 4 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Chapter 2 Operation 2 1 Connect the power supply to the electronic load DC POWER Fig 2 1 Connect the power supply to the electronic load 2 2 M
23. rinectthe electronic Toad to PG 7 oce t ee Ne ree Ae M a est aus 15 1 2 Installati ones speek E c EE 15 Chapter 2 rnnt 19 2 1 Running the prostam A A A ab me te I NA shia eee aa ER ORE ded 19 2 2 The Eload T TTT 20 2 3 The Elo d Mode List 5 0 2 toit otto ete te tbe tot Hee d poteet denon Hedeper talpa erio ie testo bete ete tes 20 2 4 Control Switch 22 2 eere het pe E ger shin a 20 2 5 The Tool Buttons A erar ax eee EYE tte E ER er B v m v over die ee reta ies 21 2 6 Keypad and Rotary dial 4 eet t eei eee Mets 21 2 7 The Amp Power Resistance Voltage Meter co teret De repr rc ERR RR AA e SE es a E e oer eee RA eR rane ds 22 2 9 Dynamic Curve oo fete ee eee eth tse sette ite Nip te touc p e e et st ee tete 22 2 9 Set ng co E e I ee rM ER HO en EL d Ee Senet ordo Ue dE md rwn eus Ue Le he 23 2 10 Progratmmz Window stings ye sep ER HT 24 2 11 Eload Sl rin rindo tia 24 ZAD Data Reports oes NR M O 26 2 13 Use Electronicload software control your load sss 27 Chapter 3 Uninstall ElectronicLoad Software o oooooococnoncnonononocononoroconoracoracororocnrornononoconononononocorocoruraccuraono cos 28 3 1 Uninstall the ElectronicLoad Softwares ss renerien K ches aoe eg chan KE R RER cece AE E Ep R cen re See LER cocer Dee Ra Z TET 28 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Chapter 1 Ge
24. that the electronic load will sink a constant power in accordance with the set value The power value can be set with the keyboard and or rotary knob Please see the following operation procedure Constant power setting procedure Procedure Operation details LCD display Step 1 Press P set Input Password Enter the password if the keyboard isn t locked please go to Input Password Step 2 step4 ok Press the OK button the original set value will be displayed Set Power 20 0W Step 3 on the LCD It will return to step 2 if your password is wrong New 3700 Series Programmable DC Electronic Load 7 VERSION 2 0 2011 03 3700 SERIES USER MANUAL Enter the new power value with the number keypad or rotate Set Power 20 0W Step 4 the dial to adjust the value New 30 0 Press P set button for confirmation Set Power 30 0W Step 5 New 30 0 Step 6 Press ESC to go back to the main menu You can exit the power set operation at any point by pressing the ESC key 2 2 3 Constant Resistance Mode In constant resistance mode the electronic load will sink a current linearly proportional to the input voltage in accordance with the set value The resistance value can be set with the keyboard and or rotary knob Please see the following operation procedure Constant resistance setting procedure Procedure Operation details LCD display
25. the main window 2 13 Use ElectronicLoad software control your load Start the ElectronicLoad program from the Eload List select the load you want to use If the desired load does not appear on the Eload List use Eload Setting to add the desired load Click the fp Setting button ensure that the Com port baud rate and address is the same as that of the load Click the gt Start button to start communication Using the Control Mode switch set the load in PC control mode You may now control the load from the computer Prior to quitting the ElectronicLoad program do remember to return the setting of your load to the Self control mode failing which you will be unable to control your load using it s own keyboard In the event of communications failure please check the Com port baud rate and Address settings Also ensure that the communication cable is firmly and correctly connected 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL Chapter 3 Uninstall ElectronicLoad Software 3 1 Uninstall the ElectronicLoad Software From the Start Menu select Program gt ATTEN gt Eload gt Uninstall Eload to unstall the software Remember to quit the program before uninstalling 3700 Series Programmable DC Electronic Load 29 VERSION 2 0 2011 03
26. tions can it implement the functions properly and reliably 3700 Series Programmable DC Electronic Load 1 VERSION 2 0 2011 03 3700 SERIES USER MANUAL The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument The manufacturer assumes no liability for the customer s failure to comply with these requirements A Attention I Safety 1 Users should operate according to this manual 2 There is high voltage inside the instrument please avoid touching it directly 3 Please read the user manual carefully before you use the instrument to assure your safety 4 Ground the Instrument This product is provided with a protective earth terminal To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical ground The instrument must be connected to the AC power supply mains through a three conductor power cable with the third wire firmly connected to an electrical ground safety ground at the power outlet 5 Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by qualified service person Do not split the components when power cable connected Under certain conditions
27. value 0 30A press ENTER to confirm Set Power Press P set input the power value 3710A 0 150W 3711A 0 300W press ENTER to confirm Set Resistance Press R set input the resistance value 0 500Q press ENTER to confirm I Max P Max R Max show the max value of each parameter 2 7 The Amp Power Resistance Voltage Meter The Amp Power Resistance Voltage Meter show the setting and read back value of current power resistance and voltage 22 3700 Series Programmable DC Electronic Load VERSION 2 0 2011 03 3700 SERIES USER MANUAL READ DOL DOD j a XL UA ser GE BO Bad Fig 2 9 The Amp Power Resistance Voltage Meter 2 8 Dynamic Curve These curve show the dynamic states of voltage and current Current Curve Voltage Curve T 15 5 d i 10 3 S 5 1 0 lt 0 50 100 150 0 10 20 30 40 50 Fig 2 10 The Voltage Curve Fig 2 11 The Current Curve You may drag your mouse on the curve to zoom in out 2 9 Setting 2 9 1 Setting Com port and baud rate Click the button select the correct Com port and baud rate The baud rate setting should be the same as the M connected electronic load 3700 Series Programmable DC Electronic Load 23 VERSION 2 0 2011 03 3700 SERIES USER MANUAL Fig 2 12 Setting Window 2 9 2 Setting electronic load address Fig 2 13 Address Setting window Click Address to go to the Address setting window Set an address that is the same as the
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