User Manual
Contents
1. 5513 Remote Sense FUNGUO ao earn ER NE E O REE NEEE 27 Chapter6 Remote Operation cccceccsecseecneeeecenecseceeeseesseeseseeeesenseeeeeseeteeeeeseeteeegesseeeseneeteeness 28 B R S S S FS SEE SE SE rr Er ee ee 28 OZ BINET A O EET E E E eee 30 USER MANUAL 2 kel TECH IT6870B User manual 1T6870B Series Programmable DC Power Supplies Security Please do not install replacement parts in the instrument or perform any unauthorized modification Please send the instrument to our company s maintenance department for maintenance to ensure its security features Please refer to the manual for specific information warning or precautions to avoid personal injury or equipment damage There is no part that the operators can maintenance If maintenance service is required please contact trained service personnel Security regulation To prevent electric shock a non authorized personnel is strictly not allowed to open the machine This equipment is strictly prohibited for use in life support systems or any other device with security requirements We cannot accept responsibility for any direct or indirect financial damage or loss of profit that might occur when using the electronic load Safety symbols Warning It reminds the user note some operating procedures practices conditions and other matters that may lead to human casualties Notes lt reminds the user of some operating procedures practices conditions and other mat2. Power up setting gt P MEM P MEM item is used to set operation parameters state of power supply after power up If select RESET means to initialize output parameters to factory default setup Every time you power up the unit the output parameters is always OV OA lf select KEEP means to remember last shutdown parameters The next time you power on the unit the output parameters are kept as the same with last shutdown setup Factory default set is KEEP On Off state after power up gt P OUT P OUT item is used to set the output state of power supply after power up If select KEEP means to remain the output state of last shutdown In this selection if you power off the unit in output on state then the next time you power up the unit the output is kept in on state If select OFF means every time you power up the unit it defaults in output OFF state Factory default set is OFF Communication set gt COMM IT6870B series power supply has built in standard RS232 USB GPIB communication interface gt COMM item is used to set the communication mode by RS232 or USB It includes six kinds of baudrate set in RS232 communication mode 4800 9600 19200 38400 5 7600 11 52K When operating the power supply in remote mode make sure that you configure identical baud rate settings for the power supply and the computer KEY Sound Set gt BEEP gt BEEP item is used to set the key sound If select On means enable the key sound If select
3. 0 15V 0 4A 0 7A 0 140W 0 105W T6873B 0 75V 0 32V_ 0 2A 0 4A 0 150W 0 128W IT6874B O 150V 0 60V 0 1 2A 0 2A 0 180W 0 120W USER MANUAL ITECH IT6870B User manual Chapter1 Inspection and Installation Power supply is high level safety equipment there is a protected ground terminal Before Installation or operation please read the safety signs and instructions in this manual 1 1 Inspection After received the power supply follow these steps to check it 1 Check for damage in the equipment during transport If the frame panel is damaged or abnormal working ext Please contact immediately with our authorized dealer or service department Do not return the instrument before positive response has not been got 2 Check the attachment Make sure you receive the power and the following components at the same time if any missing please contact your nearest dealer o a power cord in accordance with the standard voltage used in the region see the below picture o an operating manual o a factory calibration report o USB cable Power cord type China USA Canada Uurope England IT E171 IT E172 IT E173 IT E174 3 The power input requirements There are two kinds of working voltage for the power supply 110V and 220V so please pay attention to the working input voltage There is a power cord which matches with your local power in the attachment If that does not match please do not hesitate to con
4. Off means disable the key sound Factory default set is ON KNOB State gt KNOB_ gt KONB item is used to set the state of KONB lf select ON means unlock the rotary knob You can use knob to scroll menu or set a value If select LOCK means disable rotary knob function Factory default set is ON ae USER MANUAL ITECH IT6870B User manual Trigger Mode gt TRIG IT6870B series power supply supports two different trigger modes MANU and BUS If select MANU press Shift Enter Trigger can generate a trigger signal If select BUS then sending command TRIG can generate a trigger signal Factory default set is MANU Group set MEM GROUP IT6870B series power supply enables customer to store up to 9 8 groups of different operating parameters in a non volatile memory for quick recall How to understand 9 8 9 8 There are 8 groups each group includes nine different memory locations The definition of group is as follows GRP1 means to Save Reall parameters in memory location from 1 to 9 Operation Press shift Recall Save numeric keys 1to 9 CRecall numeric keys 1 to 9 GRP2 means to Save Reall parameters in memory location from 10 to 18 GRP3 GRP8 is counted on the analogy of the same rule Timer setup gt TIMER SET TIMER SET item is used to enable or disable timer function lf select ON means to enable output Timer Output will turn off after value set in menu Timer set counted down
5. T50VA T50VA 750VA USER MANUAL ITECH IT6870B User manual Chapterd Front panel Operations This chapter introduces the basic operations of 1T6870B It is divided into following parts local remote Voltage setting Current setting Output on off Switching the setting value and actual value Dual range switch Adjust voltage current power Save operation Trigger operation Menu operation OVP function Keyboard lock function 5 1 Local remote Local button on the front panel is used to switch remote mode to local mode After power on the power supply it defaults in local mode In this mode all buttons are enabled While in remote control mode all buttons are forbidden except local button Local and remote control mode can be switched by PC It will not change the output parameters when mode is changed 5 2 Dual range switch Operation Press shift number 4 or 7 Take IT6872B as an example press Shift tnumber 4 VFD will appear a mark it represents in high voltage level 0 32V 4A Press shift tnumber 7 mark will disappear which indicates in low voltage level now 0 15V 7A In high voltage level setting voltage is higher than the max voltage in low voltage level At this moment if customer switch to lower voltage level Then the voltage will default to be limited at the max voltage value of low voltage level In low voltage level working current is higher than in high voltage level So when customer sw
6. These pins are identical to the output terminals in the front Disable remote sense function When you do not use remote sense function please refer to the below 1 Using short clip to connect and S and S 2 Connect device under test with output terminals on front of power supply Enable remote sense function 1 Disconnect and S and S 2 Connect sensing wires from S and S to the load input terminals 3 Connect output wires from and on front panel to the load input terminals Note To ensure the system stability please using twisted pair cables to connect sensing terminals and loads input terminals S USER MANUAL Chapter6 Remote Operation IT6870B series power supply provides two standard communication interfaces RS232 USB GPIB User can select anyone to communicate with the computer 6 1 RS232 interface There is a COM port DB9 connector at the rear of the power supply when connect to computer you need to connect a cable with COM port on both side To active connection you need to press the front panel composite key Shift to configurate settings the same as computer configuration settings RS 232 interface can be used to program all of the SCPI commands Note The RS232 settings on the computer side must match the settings in the system menu of the instrument If any change please press Shift 4Ceset key to enter the system menu and then implement the changes RS 232 data for
7. supply 2 1 The front and rear panel description oO o 1 VED display 2 Rotary knob Compound key the local switch key and power switch Number keys and ESC escape key Function keys 6 UP DOWN LEFT and RIGHT key to move cursor Output terminals USER MANUAL 4 Cooling window Remote sense terminal RS232 communication interface USB communication interface AC power socket fuse contained 6 GPIB communication interface Note the AC power switch is at the bottom of the power supply To avoid any damage lease make sure it is in the right position before you power on the supply 2 2 Keypad introduction OVP Menu 9 6 Keypad description see the table below Name and the function Shift Compound key co work with OVP Menu Save Trigger Lock and numeric key 4 and 7 Local switch key switch from remote mode to local operation mode Power on key Numeric keys 09 OVP Voltage set key set the output voltage over voltage protection point for the power suppl Menu Current set key set the output current menu function key to set the relevant Parameters for the power supply Callback key to call up a set value of system parameters already stored storage key to save system parameter settings Meter key to switch from value set panel and the actual output value display Enter key to confirm the number entered and operation trigger Trigger button which is used to trig
8. which AWG copper could bear Max 40 25 20 13 10 5 3 5 2 5 1 7 current A Note AWG is the short of American Wire Gage which indicates X lead it is marked on the lead The parameters on the above table are for single lead in 30 C working temperature This is for your reference only 2 Could not set CC mode The power supply has auto switch function between CC mode and CV mode Due to this function the power supply could keep continuous operation by switching from CV mode to CC mode when the load changes According to the present load power supply works under CV mode it provides controlled output voltage which keeps constant when resistance of load diminish and it will switch until the actual current is above the set value lf power supply switches to output current output voltage will scale down according to resistance of load The power supply will be back to CV mode when the current is below the setting Vout Vmax less Constant Voltage Constant Current lout Imax The working mode of power supply could be indicated via the VFD marked zone if it displays CV the power supply works under CV mode if it displays CC the power supply works under CC mode 3 No output Please check the status of current in SET whether it is zero if it is set as zero please modify to non zero value if still no output please connect ITECH directly 4 How to avoid it couldn t start when test b
9. will off the output immediately Meanwhile the VFD displays OVER VOLT and there will be a mark of PROT appearing on the top right corner of VFD The operator should avoid adding an external voltage over 120 of rated voltage across the power supply Or it will damage the internal components When OVP is triggered you should inspect the external causes and remove it firstly Then press ON OFF button to restart the output If in remote control mode you should clear the PROT state by sending command and then turn on the output USER MANUAL a ITECH IT6870B User manual 5 12 KEY LOCK Press Shift COn Of Lock button to lock the function keys If successfully be locked a mark of LOCK will appear on the front panel Meanwhile all the function keys will be disabled except ON OFF Meter and Shift buttons Press Shift COn Of Lock again can release the key lock function 5 13 Remote Sense Function Remote sense is used to maintain good regulation at the load and reduce the degradation of regulation that would occur due to the voltage drop in the leads between the power supply and the load By connecting the supply for remote voltage sensing voltage is sensed at the load rather than at the supply s output terminals This will allow the supply to automatically compensate for the voltage drop in the load leads and improve regulation S S amp S S S remote sense terminals output pins
10. 10VAC or 220VAC when the power supply is shipped from the factory Change the voltage setting if it s not correct 3 Verify that the correct power line fuse is installed If the fuse was damaged please see the table below to replace the fuse for your power supply Fuse Fuse Specifications Specifications 110VAC 220VAC IT6872B reer 1T6873B T6 3A 250V T3 15A 250V IT6874B 4 How to exchange the fuse Open the small plastic cover below the power supply input socket on the back panel with a screwdriver and you can see the fuse in it please use the specifications in line fuse Remove the power cord and then use a screwdriver to remove the fuse box insert 2 System self test After power on normally the supply will enter self test first USER MANUAL ITECH IT6870B User manual During this time the following should be displayed INIT SCAN SYSTEM If the self test is pass then the VFD will display OFF 0 000V 0 0000A In case the self test is not successful you may see one of the followings About 1second after power on if the EEPROM was damaged the VFD will display about 1 S EEPROM FAIL If the last power status in EEPROM is lost then VFD will display information about 1 S as below SYST LOST If the calibration data in EEPROM is lost then VFD will display about 1S as below CAL LOST If the factory calibration data in EEPROM is lost and then the VFD will display abo
11. CH IT6870B User manual User Manual Programmable DC power supply IT6870B series Model IT6872B IT6873B IT6874B OOO Es GT 200 eae 5 Erg we Copyright 2014 All Rights Reserved Ver1 1 JUN 2014 IT6800B 603 USER MANUAL I SEE degen gee scree sens ses ne ees E EA 3 Security regulation icici esters teste saint sant eremncnsns ica teanyesmesdanamenteAdacnereunastetouteaderctenadosuacsteteactan 3 Safety SVS tees octane sen dc aie ea ences E ERE ERR E REE ERE ERE E REE anos caeeaacns cengasemacecssnes lt eaaacease 3 Certification and Quality Assurance ccc cc cece ecccceeeececeeeeceeeeeeeesseaeeeeseeeeeseeeeeeeas 3 Chapter Inspection and Installation cccceccccccsecsecseceeeeseeeeseeeeeceeeeeeeeeteeeseeeneeeeeeenenteetesanetaeees 6 T NDE REE OM ae eae sete tect sensei devs aise ete eat outs tasanssemeceieat sana AEN E EEEE neh E 6 1 2 To Rack Mount the INStruMent 0 0 ccccecesssssssacececeececessessssaaeceeeceecesesseeaaaeeeeseseeeeseeeesaaaeaeesees 7 1 3 The size of the power supply W W W u u d dsssessseeeeerereeeeneree steen esserne tesen tesen nsten esserne essere rese seernes 8 REF 2 UG SEU SE SEE E eee 9 2 1 The front and rear panel description Xu u ussssseseeeevevesereneeeeseeeee reen ennen nen ener renee eee seeren eee 9 2 2 KV DAGE INFO AERO FEE r E A E N A A EAR 10 Po VFO DES FOA SE SEE ES N AENEA E A N TIEA EU 11 igre J DOWEI Ol GINS CK ES DE Eee 12 3 1 OW CT on TS NS
12. CIR oaser ae E R RAE T ia E EERE EEEE AEE 12 1 Power on the power SUD DIY cies ceskescsacssesssdovecveccnsasecinesdnsnenbenseod dun vetvennegasseevedntewndsaecbaecsuexeneecmsansacdes 12 Ze SVC IN SS US e ansseseasilanesuehuoces conenan Annas soe cuenisd E 13 32 I VENCAU O sass seer sner ease i EEEE E Ee 14 2 GUFSAF CUTOUT GIN GC aesan AEA EENEN NAE ENEE Kes Dee kkes 15 chan Fo ER ON os E E Nee 16 4 1 main technical parameters eeesesessssesssssssessssrseerererrrrerrrrererrrrrrerssssssssssssssstststttttttttierereereerereseses 16 4 2 s pplemeniary characters HC ene ee or eee ENEE 17 Chapter5 Front panel Operations ccccceccecceeeseeeeeeeeceeeceeeeeeseeceeteeeeueeseeeeanenseseeegeeneetaes 18 MOAN SO esse a E E E E 18 Se DUT INS SWING Uh oora OE E N E A E AS 18 ro re Volage SeN eese sena e R EEEE EE EEEE ERENT EN E EEEE E EERE EEE 18 IACUE UN eaa E E EE N eee 19 SS OUPO O eea A EE E E EE lle 19 5 6 switch the actual setting value CISPIAY ccc ccccsssssccecceesessseeecceeessseeeeeceessssseceecesenseeeseecettaaeeees 19 oa a Gy 1 O e ero E eee en nee Se E eee 19 2o SAUER MM EET E nes vas ett E EE Er ER 19 S S MHE 8 ak 2 1110 g Henne OEE nn nn er E AAA E EATA TE ED FARTEN DE 20 SA10 MEMU Oprator nie E EREEREER EE EE ee ve 20 Mes MENUS EUC O nE E E AO E E E A E E E TA 20 A ETM FONC ON ee E E E AAEE E NEA TEE EA E E 22 FOYE BONE IO NE E A E E A E A Eer 26 I2 KEN OG KE a A ER E E E E E E E A E A EEEE 2
13. N Enable list function Ton Recall list operation file FILEO FILE3 LIST EDIT SEC Select second as time unit ig USER MANUAL ITECH IT6870B User manual SEC MIN _ Select minute as time unit VSET Set step delay time 0 1 9999 NEXT YES ss Continue to edit the next step YES NO _ finish list file edit REPET 1 65535 Set repeat count Do not save the current list file In this mode the file can only run for one time SAVE Once you quit the list mode or turn off the unit the file cannot be recalled FILEO FILE3S FILE3 save list file to assigned memory FILEO FILES See EXIT Quitlistmenu eee Quitlistmenu eee menu POWER MODEL MODEL Model information INFO VER Firmware version SN 1 First six number of SN SN 2 Middle six number of SN SN 3 Last six number of SN EXIT Quit information menu EXIT MENU Quit menu Note Press ED button can help to quit Menu setup and any function button operation 2 Menu Function Maximum voltage gt MAX VOLT The maximum voltage can be adjusted from 0A to maximum rated voltage of each model To set max volt 1 Press Shift Menu button to enter menu setup scroll to gt MAX VOLT item and press Enter to confirm 2 Using Ca P button to adjust cursor position and set max voltage Output voltage set will be limited within the range of max voltage MAX VOLT default set is the rated voltage of each model USER MANUAL ITECH IT6870B User manual
14. attery ig USER MANUAL ITECH IT6870B User manual When test battery the main reason of no start is that battery residual voltage discharges capacitors of positive and negitive terminals of the power supply Method to avoid no start connect a switch which is parrallel with a current limiting discharging resistor Close the switch after all the all leads connected well The wiring diagram as follows Power Battery Supply 5 No output after working for a certain time Please check the status of timer and please close it if it is open Posiscript Mark mmy O Close when Open when Open Close Circuitisdis circuit is connected connected Support process lf you have a problem follow these steps 1 Check the documentation that come with the product 2 Visit the ITECH online service Web site is www itechate com ITECH is avaliable to all ITECH customers It is the fastest source for up to date product information and expert assistance and includes the following features Fast access to email AE Software and driver updates for the product Call ITECH support line 4006 025 000 UA A USER MANUAL
15. ctions described as follows device can read all of the mandatory SCPI orders device is SR1 enabled device is RL1 enabled device is DT1 enabled To communicate via USB interface you should first select the communication interface as USB in the system menu the detailed operation is Press Shift set to enter the menu press V to select SYST SET and then press Enter P MEM KEEP is displayed then press V to select COMM RS232 press Enter then V to select USB and Enter to confirm Press Es to escape the menu Note when communicate via USB interface only SCPI commands are supported so you should make sure the LANG SCPI FRAME item in the system menu is selected as SCPI if not please change to SCPI 6 3 GPIB interface First Connect the GPIB interface on the power supply and the GPIB card on computer via IEEE488 bus must be full access and tighten the screws Then set the address the address range of the power 0 to 30 can set by the function key on the front panel press the Shift Ceset D key to enter the system menu function find the GPIB address setting by button type the address RE key to confirm GPIB address is stored in nonvolatile memory line Note Forbidden to connect DBY connector in power supply directly with PC or other RS232 port USER MANUAL ad ITECH IT6870B User manual Q amp A 1 Specification of leads The following table enumerates the max current
16. d A Warning The power supply provides a three wire power cord you should plug it to a three cord junction box You should also make sure the power supply is well grouded Warning The connection wire should have enough current capacity that it can bear the max rated current short current of the power supply and not get too hot FANG To avoid any fire or electric shock please ensure the AC input voltage fluctuation not exceed 10 of the working voltage range Note In some situation use the miscongfiged main voltage for the instrument may cause the main fuse blew Note If the power supply is used to charge a battery please pay attention to the positive and negative polarity to avoid any damage Power on pre check includes two parts power on the supply and system self check 1 Power on the power supply If Power Supply Does Not Turn On Use the following steps to help solve problems you might encounter when turning on the instrument USER MANUAL g T C H 116870B User manual 1 Verify that there is AC power to the power supply First verify that the power cord is firmly plugged into the power receptacle on the rear panel of the power supply You should also make sure that the power source you plugged the power supply into is energized Then verify that the power supply is turned on 2 Verify the power line voltage setting Make sure the voltage selector switch is set according to the present line voltage 1
17. e cable has the right plug the internal wiring may be wrong Interface cable must be connected to the correct serial port on the computer COM1 COM2 etc Communication Settings Before communication you should first make the following parameters on the power supply and PC matches Baud Rate 9600 4800 9600 19200 38400 5 7600 115200 You can enter the system menu from the front panel and then set the baud rate Data bits 8 Stop Bits 1 calibration none even odd EVEN 8 data bits have even parity ODD 8 data bits have odd parity NONE 8 data bits no parity MODE SIGMUX SIG a single instrument is connected to the communication MUX 2 multiple sets of instrument communication with PC at the same time in this situation instrument address must be set to distinguish among all the units address O 30 default set is 0 Local Address 0 30 the factory default setting is 0 ae USER MANUAL ITECH IT6870B User manual Parity None Start Bit 8 Data Bits Stop Bit 6 2 USB interface Use a Cable with two USB port to connect the power and the computer All power functions can be programmed via USB The USB488 interface functions of the power supply described as below interface is 488 2 USB488 interface Interface Receive REN CONTROL GO TO LOCAL and LOCAL LOCKOUT request Interface receive MsgID TRIGGER USBTMC order information and will pass TRIGGER order to the functional layer Power USB488 device fun
18. ents output has been turned on If button is dark it indicates that ouput is off In output on mode the indicator light CV or CC will be lit Note Please ensure the power supply and determinand has been connected well and then press COMO button to turn on the output 9 6 switch the actual setting value display Clete button is used to switch the display between actual and setting value 1 When Clete button is lit it shows actual voltage and current on front panel Meanwhile VFD will appear a marker of meter 2 When Clete button is dark it shows setting voltage and current on front panel 5 7 CC CV mode According the ohms law output current is determined by output voltage and the resistance of load When actual current is less than the setting value power supply will function in CV mode And CV status indicator lamp will be lit lf actual current is above the setting value or rated value power supply will change to CC mode and CC status indicator lamp will be lit 5 8 Save Recall IT6870B series power supply enables customer to store up to 9 8 groups of different operating parameters in a non volatile memory Each operating parameters includes a constant voltage value constant current value and OVP setting value You can save or recall parameters by 8 Shift CRecall Save buttons directly from the front panel or through command SAV RCL USER MANUAL ITECH IT6870B User manual Save operation Set t
19. environment and storage temperature 4 1 main technical parameters Model IT6872B IT6873B IT6874B Output 0 35V 4A 0 75V 2A 0 150V 1 2A Ratings Dual range output 0 32V 4A 0 60V 2A Fer D 01 amv 20 01 4mV regulation lt 0 01 3MA lt 0 01 2MA lt 0 01 2MA Line Voltage lt 0 01 5mV lt 0 01 4mV lt 0 01 4mV regulation lt 0 01 3MA lt 0 01 2mA lt 0 01 2mA 1mV lt 100V Programming Voltage 1mV 1mV 10mV gt 100V Resolution DIMA DIMA 1mV lt 100V Readback Voltage 1mV 1mV 10mV gt 100V resolution 0 1mA 0 1mA Programming accuracy Voltage lt 0 04 8mV lt 0 04 8mV lt 0 05 20mV 12 month 25C45 C lt 0 1 5mA lt 0 1 5mA lt 0 1 5mA Readback accuracy Voltage lt 0 04 8mV lt 0 04 8mV lt 0 05 20mV 12 month 25 C 45 C lt 0 1 5mA lt 0 1 5mA lt 0 1 5mA i lt a Ropple amp Noise Normal mode lt 3mVp p 1mVrms lt 3mVp p 1mVrms EUo LEITE Voltage NOTEN Mok lt 6mArms lt 6mArms lt 6mArms Current Common mode Transient Recover to 75mV lt 50us lt 50us lt 100us response time 50 100 load USER MANUAL io kml TECH IT6870B User manual 4 2 supplementary characteristic State storage Memory 9x8 groups Calibration frequency 1year Cooling Fans Operation temperature 0 to 40 C Storage temperature 20 to 70 C Environmental condition Designed for indoor use max humidity 80 and no condensation Max AC input power IT6872B IT6873B IT6874B
20. er manual If you select to save the list file VFD will display LIST EDIT after blinking contents of SAVE DONE for about three seconds 14 Press two times to exit menu operation 15 After you edit a list file set the trigger source in the menu to MANUAL 16 Press GRO button to turn on the output Press shift Enter Trigger to generate a trigger signal to execute a list file 17 If you have saved multiple list files LIST LOAD item can help you to recall assigned file that you need Then press two times to escape menu operation Then the same operation as step 16 Note In LIST mode I SET and V SET buttons are forbid To release list function please refer to the following steps Press Shift C set_ Menu into menu setup press V to select LIST SET press Enter to confirm VFD displays LIST STATE press Enter to confirm press V to select LIST gt OFF CEnter to confirm Trigger Trigger 5 11 OVP Function IT6870B series power supply provides OVP function Press Shift C zset OVP button to set OVP value After setup a mark of ovp will appear on the VFD which means you have successfully open OVP function Press Shift set OVP again will release OVP function Factory default set is off OVP function Reasons to trigger OVP Customer s wrong operation internal circuit error or over high external voltage will cause OVP Once OVP is triggered the power supply
21. ger the List test Lock Output on off keys control power output state keypad lock function keys used to lock the panel buttons CIS Left and right movement keys used to set the value to adjust the cursor to the specified location USER MANUAL a C H IT6870B User manual Up and down keys used to select a item in the menu or increase decrease the output voltage or current values Output is off Timer Output on timer function is enabled CV The power supply is in constant ET voltage mode cc The power supply is in constant SES NERE current mode The power supply is in high USB light when the address voltage range or RS232 received The power supply is in remote Meter key is pressed Rm ede shift Shift key is pressed Use a The power supply has error or compound keys fault The power supply is in OVP ove OVP function is enabled IOTP protection i USER MANUAL kel TECH IT6870B User manual Chapter 3 power on check This chapter will introduce the procedure of power on check for IT6870B including pre check and output check to make sure the power supply can power on and work normally on the original state 3 1 power on Pre check Before operation the power supply please read the following safty guide Aie The AC input voltage is 110V or 220V please check the switching at the bottom of the power supply to make sure it matches the voltage in your city Otherwise the power supply may be damage
22. he desired Voltage and Current value Press the Shift Recall number 1 to 9 to assign a memory location Press CEnter to confirm Recall operation Keep group setting unchanged press Recall number 1 to 9 to select the memory location where the settings you want to recall are stored Group Concept When storage amount exceeds 9 you have to enter into menu and select MEM item to change the group set Meanwhile to recall a pre stored parameter should be coordinated with correct group set For example if you want to recall parameters which are stored in memory location from 10 to 19 then MEM should be set to group 1 To change group set 1 Press shift SD button to enter the menu press V button to select SYST SET press Entento confirm 2 Press V to select MEM enter a numerical value press CEnteD to confirm 5 9 Trigger operation IT6870B series power supply supports two different trigger modes Manual and Bus Configure one of the trigger sources before performing trigger operation This operation is often used with list operation It provides a trigger signal to start running a list file During the process of running a list file trigger button Enter Trigger will keep blinking until finished 5 10 Menu Operation 1 Menu structure Press Shift Cset_ Menu to enter menu mode Use theA V or knob to scroll through the menu list and press to select a item and view the parameters Press Esc butt
23. hen repeat step 5 6 2 Current Output check The following steps check basic current functions with a short across the power supply s output High voltage range current check 1 Turn on the power supply 2 Enable the output Press OnO key to ensure that the output is disabled At the same time the OFF status mark is on the VFD 3 Connect a short across and output terminals with an insulated test lead use a wire sufficient to handle the maximum current 4 Adjust the voltage value to 1V 5 Turn on the power output Press key to ensure the output is enabled at the same time there is CC status sign on the VFD 6 Turn on Meter mode Press Meter to light the button the Meter status Mark light on the display is turned on 7 Adjust the current value Set some different current values check whether the voltage value on VFD is near Ov and the current on it is close to the value you set 8 Make sure that the current can be adjusted from 0 to full rated value Low voltage range current check 9 Press Shift 4 to switch to high voltage range repeat step 7 8 above verify if the current can adjust from 0 to full rated value 10 Turn off the output of the power supply and remove the short wire USER MANUAL 1 ITECH IT6870B User manual Chapter 4 specification This chapter will introduce the main technical parameters of IT68 70B such as rated voltage current power and so on Besides we will introduce the working
24. itch to high voltage level with lower current range the current will default to be limited at the max current value of high voltage level 5 3 Voltage setting IT6870B series power supply enables customer to set voltage from OV to rated value Press button it will be lit Now there are three ways to set the voltage Solution1 press button press button to adjust the cursor s position press A and V button to increase or decrease the setting value Solution2 press button press Cal button to adjust the cursor s position adjust the knob to increase or decrease the setting value Solution3 press button number to to set the voltage value Then press USER MANUAL k ITECH IT6870B User manual CEnter button to confirm 5 4 Current setting IT6870B series power supply enables customer to set current from OV to rated value Press button it will be lit Now there are three ways to set the voltage Solution1 press button press GAI button to adjust the cursors position press A and V button to increase or decrease the setting value Solution2 press button press button to adjust the cursor s position adjust the knob to increase or decrease the setting value Solution3 press button number to to set the voltage value Then press Enter button to confirm 5 5 Output on off button is used to control the output of power supply When Cn O button is lit it repres
25. mat RS 232 data is 10 bit words contain a start bit and a stop bit The start bit and stop bit cant be edited However you can select the parity items by pressing shift Crset_ key on the front panel and enter the system menu SYSTEM SET Parity options are stored in nonvolatile memory Baud Rate The front panel Shift CesetD button allows the user to select a baud rate which is stored in the non volatile memory 4 800 960 019 200 3 840 057 600 115 200 RS 232 connection Use a RS232 cable with DB 9 interface RS 232 serial port can connect with the controller eg PC Do not use blank Modem cable Table 2 2 shows the plug pins lf your computer is using a RS 232 interface with DB 25 connector you need an adapter cable with a DB 25 connector at one end and the other side is a DB 9 not blank modem cable 5 4 3 2 1 f Y o T e 9876 Pin introduction of RS 232 connector USER MANUAL ee IT68 0B User manual Pin Description number TXD transfer date RXD receive data e no cometon 8 Rs ready to transfer e nocomnecion RS 232 Troubleshooting If there is RS 232 connection problem check the following Computer and power supply must configure the same baud rate parity data bits and flow control options Note that the power configuration as a start bit and a stop bit these values are fixed As described before in RS 232 connector you must use the correct interface cable or adapter Note that even if th
26. on to return to the higher level menu and to quit the menu setting Set the Maximum Voltage Reset Return to the factory default setup value Remembers and restores the operating parameters of power supply voltage current settings before power was turned off The next time you power up the unit the parameters will be recalled automatically OFF o Set the Power to OFF state after power up Remembers and restores the power ON OFF state of power supply before power was turned off The next time you power up the unit the USER MANUAL a LIST SET IT6870B User manual on off state will be recalled automatically GPIB ADDR Set GPIB address Baudrate set 4800 9600 BAUD 19200 38400 57600 COMM 11 52K ia EVEN USB Set to SCPI protocol SCPI SIG Single unit to communicate with PC CMD MUX Multiple units to communicate with PC ADDR FRAME Set to frame protocol ADDR Address range is 0 30 BEEP OFF Disable key sound ON ON _ Enable key sound KNOB Lock the rotary knob ON ON Unlock the rotary knob TRIG MANU Press Shift Enter Trigger to generate a MANUAL trigger pulse BUS Remote command trigger mode C Group set used with Save Recall operation TIMER OFF Disable timer function SET ON _ Enable timer function 0 1 9999 9S BESET NO Remain unchanged of previous menu setup YES Return to factory default setup EXIT List OFF __ Disable list function o STATE O
27. tact with our authorized dealer or service department AC input levels select by change the AC power switch on the bottom of the power supply Option Opt 01 220VAC 10 47 to 63 Hz Option Opt 02 110 VAC 10 47 to 63 Hz USER MANUAL 1 2 To Rack Mount the Instrument You can mount IT6870B series power supply in a standard 19 inch rack cabinet using the IT E151 rack mount kit The procedure Remove the carrying handle before rack mounting the instrument To remove the handle grasp the handle by sides and pull outwards and rotate it to a special position vertical to the Power supply then pull the handle outward After removing the handle you can tear the lables on both side and then you can see the screw holes PIC 1 3 To rack mount two instruments side by side order rack mount kit IT E151 you needn t to use the front cover panel 7 USER MANUAL 1 3 The size of the power supply 1 The size of IT6870B series power supply 214 5mmWx88 2mmMHx354 6mmD refer to the Dimensions below Unit MiliMeter mm PIC 1 4 The dimension of IT6870B power supply USER MANUAL 2 T C I IT6870B User manual Chapter 2 Quick Start This chapter introduces the front panel the rear panel key functions and VFD display function of the 1T6870B power supply make sure that you can quickly know the appearance instruction and the key function before you operate the power supply Help you make better use of this series of power
28. ters that may result in instrument damage or data lose forever D Connect it to safety earth ground using the wire recommended in the user manual The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual JN High voltage danger Certification and Quality Assurance IT6800B series programmable DC power supply fully meet all of the technical specification in the manual Warranty Our Company gives one year warranty for the materials and manufacturing of the product since the date of shipment i USER MANUAL Warranty Service For the warranty service or repair the product the product must be returned to the designated maintenance units Return the product to us for warranty service the customer should pre pay the one way Freight to the maintenance department And our company is responsible for the return shipping cost lf products are returned from other countries for maintenance service then the customer should pay all freight duties and other taxes Guarantee limit The guarantee does not apply to the damage caused by the following conditions Improper or inadequate maintenance to the products by customer Customers use their own software or interface Unauthorized modification or misuse Operate this product not in the specified environment or at the wrong place configuration and maintenance Damage from Customer self installation of circuit or defects due to c
29. to zero Meanwhile VFD will appear a mark of Timer lf select OFF means to disable Timer function Factory default set is ON Reset to factory setting gt RESET RESET is used to return to the factory default setup If select YES means to return to factory default setup lf select NO means to keep the current setup unchanged Factory default setup is as follows P MEM KEEP P OUT OFF COMM RS232 CMD SCPI BEEP ON KNOB ON USER MANUAL a ITECH IT6870B User manual TRIG MANU MEM GROUP 1 TIMER OFF List Function gt List Set List mode allows you to create a sequence of steps store it into the power supply s non volatile memory and execute it The input parameters for generating a list include the time unit Min or sec the step voltage step current step time and whether continue to the next step repeat count and whether save the file Each list file can be edit up to 150 steps Once a trigger signal is received the programmed list will be executed once Once finished the instrument will pause until the next trigger signal is received Operation Generate file five steps 1 2 3 4 5 6 7 8 9 10 11 12 13 Press P Shift 0 Menu into menu operation VFD displays MAX VOLT press V to select LIST SET press Entento confirm VFD displays LIST STATE press Enter to confirm VFD displays LIST gt OFF press V to select gt LIST gt ON press Enter tg confirm Then Ente b
30. ustomers use their products Product model or serial number of the fuselage has been altered deleted removed or made illegible Damage caused by accidents including but not limited to lightning water fire abuse or neglect Notice If the content of this manual is subject to change we will not notice additionally USER MANUAL i ITECH IT6870B User manual Introduction IT6870B series power supply is single output dual range DC programmable power supply which can replace two ordinary ones The front panel keys and the control knob provide a convenient interface for adjusting voltage and current storing and recalling operation Built in RS232 USB GPIB communication interface is suitable for either bench or rack mounted operation Can be designed and tested according to your needs and provide multi purpose solutions Dual range ouput VFD display Digital keypad operation High accuracy and high resolution Low ripple and low noise Intelligent fan control energy conservation noise reduction Can be monitored by computer software Output voltage and current values accordance with procedure Can use the knob to adjust the voltage and current Can adjust the numbers steps using the cursor Can set the output timer 0 1 9999 9S Standard RS232 USB GPIB communication interface Rich SCPI orders and 1T6820 compatiable frame protocol to facilitate the formation of intelligent test platform Model Voltage Current Power T6872B 0 35V
31. ut 1 S as below FACT LOST 3 2 Output Verification IT6870B is dual range output the following procedures verify that the power supply outputs the correct voltage and current levels and properly responds to entries from the front panel 1 Voltage Output Check The following steps verify basic voltage functions without load High voltage range voltage check 1 Turn on the power supply 2 Presset to set the current value 20 0001A 3 Enable the outputs Press On Of to let the ON annunciator and the CV annunciator turn on to light 4 Turn on Meter mode USER MANUAL iml T ECH IT6870B User manual Press Meter to light the button the Meter status Mark light on the display is turned on Notice if the voltage value flash then the power supply is in Set mode Set mode means that the VFD display shows the setting output voltage and current Or the power supply is in Meter mode Meter mode means that the VFD display shows the actual output voltage and current 5 Press Shift 4 to switch to high voltage range and then set the voltage level Set different voltage values check the voltage value displayed on the VFD is close to the voltage value you set and to check if the VFD displayed current value is nearly zero 6 Ensure that the voltage can be adjusted from zero to the full rated value Low voltage range voltage check 7 Press Shift 7 in the above step 5 instead to switch to low voltage range and t
32. utton will be lit You have enables list mode Press V to select LIST EDIT press to confirm VFD displays TIME SEC press Enter 10 confirm Continue to next step or press to select gt TIME MIN Press Enter to confirm Note no matter you select SEC or MIN the adjustable range is 0 1 9999 9 VFD displays VSET 0 000 press numeric keys to or adjust rotary knob to set voltage press to confirm VFD displays ISET 0 0000 press numeric keys to or adjust rotary knob to set current press to confirm VFD displays SEC 0 1 press numeric keys to or adjust rotary knobs to set time press to confirm VFD displays NEXT gt YES press to confirm Repeat steps from 5 8 for four times The last time when VFD shows NEXT gt YES press V to select NEXT gt NO press to confirm VFD displays REPET 1 press numeric keys to or adjust rotary knob to set cycle counts press to confirm Repeat count range 1 65535 VFD displays SAVE gt NO press to confirm In this condition the current list file does not be saved It can only run once As long as you quit the list mode or turn off the unit the list file will not exist anymore You also can press V to select gt SAVE FILEO to save the file into assigned memory location for quick recall Press to confirm There are four memory areas to save a list file FILEO FILE3 If you intends not save the list file VFD will directly display LIST EDIT USER MANUAL ITECH IT6870B Us
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