ITech IT8800 Series User Manual
Programmable dc electronic load
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Summary of Contents for ITech IT8800 Series
- Page 1 Via Acquanera, 29 22100 Como tel. 031.526.566 (r.a.) fax 031.507.984 info@calpower.it www.calpower.it Programmable DC Electronic Load Series IT8800 User’s Manual Model:IT8811/IT8812/IT8812B/IT8812C Revision: V2.6...
- Page 2 “Caution” signs indicate danger. It is extent of laws, ITECH is not committed languages of other countries or regions) required to pay attention to the contents to any explicit or implied guarantee for...
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Page 3: Warranty Service
ITECH, and ITECH will be responsible for return freight. If the product is sent to ITECH for warranty service from other countries, the customer will be responsible for all the freight, duties and other taxes. Limitation of Warranty... -
Page 4: Safety Precautions
Do not block the air vent of the equipment. Environmental conditions The IT8800 series electronic load can only be used indoors or in low condensation areas. The following table shows general environmental requirements for this instrument. Environmental conditions Requirement Copyright ©... -
Page 5: Regulation Tag
According to the equipment classification in Annex I of the WEEE directive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the nearest sales office of ITECH. Copyright © ITECH Electronic Co., Ltd. -
Page 6: Compliance Information
Connection of the instrument to a test object may produce radiations beyond the specified limit. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010/ EN 61010-1:2010 Copyright © ITECH Electronic Co., Ltd. -
Page 7: Table Of Contents
3.17.3 Overpower protection (OPP) ........................30 3.17.4 Overtemperature protection (OTP) ......................30 3.18 List operation ..............................31 3.19 Terminal function of rear board ........................33 3.19.1 Remote sense compensation functions ..................... 33 3.19.2 External trigger function ......................... 34 Copyright © ITECH Electronic Co., Ltd. - Page 8 References of Load Communication Interfaces ................42 5.1 RS232 interface ..............................42 5.2 USB Interface ..............................43 5.3 GPIB interface ..............................43 Appendix ..................................44 Specifications of Red and Black Test Lines ......................44 Copyright © ITECH Electronic Co., Ltd. viii...
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Page 9: Chapter1 Acceptance And Installation
After confirming that package contents are consistent and correct, please appropriately keep package box and related contents. The package requirements should be met when the instrument is returned to factory for repair. IT8800 Series load is supplied with the following optional accessories (sold separately): Item... -
Page 10: Adjustment Of Load Handle
1.3 Adjustment of load handle The load handle may be adjusted based on three methods (as shown in icons below). Be sure that appropriate force is applied to adjust the load handle to appropriate position. Copyright © ITECH Electronic Co., Ltd. -
Page 11: Disassembly Of Load Handle
Do not use too much force and mind your hands during disassembly of load handle. 1.5 Installation of support IT8800 Series load can be mounted on a standard 19” rack. ITECH provides user with IT-E151/IT-E151A rack, as an optional mount kit. The detailed operation please refer to the User Manual of your mount kit. -
Page 12: Connecting The Power Line
Categories of power lines Please select appropriate power lines appropriate to local voltage based on the specifications of power lines below. If purchased model fails to meet local voltage requirements, please contact distributor or factory for change. Copyright © ITECH Electronic Co., Ltd. - Page 13 Acceptance and Installation China America, Canada, Europe Britain Japan IT-171 IT-E173 IT-E174 IT-E172 Copyright © ITECH Electronic Co., Ltd.
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Page 14: Chapter2 Quick Start
Quick Start Chapter2 Quick Start This Chapter will introduce power-on check steps of IT8800 Series to ensure normal start-up and usage under initialization status of the load. Besides, to facilitate usage, this part also displays the functions of front board, rear board... -
Page 15: Introduction Of Front Board
Esc key, to exit at any working status. To select constant current mode and set current input value. To select constant voltage mode and set voltage input value. To select constant resistance mode and set resistance input value. Copyright © ITECH Electronic Co., Ltd. -
Page 16: Fast Function Key
Left/Right key, to adjust the cursor to the specified location to set the value. 2.4 Fast function key A combination of front board keys and Shift composition keys in IT8800 Series can realize functions marked at key bottom. For details, see table below. To start or end short circuit test. -
Page 17: Introduction Of Rear Board
Before operation, please confirm that you have fully understood the safety instructions. To avoid burning out, be sure to confirm that power voltage matches with supply voltage. Copyright © ITECH Electronic Co., Ltd. - Page 18 If set power voltage is 220 V and the supply voltage is 110 V, the electronic load cannot start. Check whether the fuse of electronic fuse is burned out. If yes, change fuse. Detailed steps: Copyright © ITECH Electronic Co., Ltd.
- Page 19 T 2.5A 250V T1.25A 250V IT8812 T 2.5A 250V T1.25A 250V IT8812B T 2.5A 250V T1.25A 250V IT8812C T 2.5A 250V T1.25A 250V After replacement, install the fuse box back to original position, as shown below. Copyright © ITECH Electronic Co., Ltd.
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Page 20: Chapter3 Function And Features
Constant power operation mode (CW) 3.2.1 Constant current operation mode (CC) Under CC mode, the electronic load will consume constant current in regardless of whether the input voltage changes or not, as shown in Fig. 3-1. Copyright © ITECH Electronic Co., Ltd. - Page 21 Set high and low rate and press [Enter] key. Constant Current High-Rate Low-Rate Set ascending slope and press [Enter] key. Constant Current Rise up=0.000A/uS Set descending slope and press [Enter] key. Constant Current Rise down=0.000A/uS Complete parameter setting. 10.0000V 0.0000A 0.00W CC=1.000A Copyright © ITECH Electronic Co., Ltd.
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Page 22: Constant Voltage Operation Mode (Cv)
Set maximum working voltage value and press [Enter] for confirmation. Constant Voltage Range=2.33V Set maximum current value and press [Enter] key. Constant Voltage High=66.000A Set minimum current value and press [Enter] key. Constant Voltage Low=0.0000A Complete parameter setting. 10.0000V 0.0000A 0.00W CV=2.33V NOTE Copyright © ITECH Electronic Co., Ltd. -
Page 23: Constant Resistance Operation Mode (Cr)
Set minimum voltage value and press [Enter] key. Constant Resistance Low=0.000V Complete parameter setting. 10.0000V 0.0000A 0.00W CC=2.000Ω NOTE If the above method is for editing auto test step (as mentioned below), constant resistance range can also be set. Copyright © ITECH Electronic Co., Ltd. -
Page 24: Constant Power Operation Mode (Cw)
Set minimum voltage value and press [Enter] key. Constant Power Low=0.000V Complete parameter setting. 10.0000V 0.0000A 0.00W CW=1.00W NOTE If the above method is for editing auto test step (as mentioned below), constant power range can also be set. Copyright © ITECH Electronic Co., Ltd. -
Page 25: Input Control Function
Manual trigger Manual（Def） External External signal trigger mode Trigger Hold Trig: IMM valid GPIB bus trigger mode Timer Timer trigger mode DISPLAY ON TIMER Screen displays loading time Start function Displ Stop function Off（default） Copyright © ITECH Electronic Co., Ltd. -
Page 26: Configuration Menu Function
Stop function MEASURE MENU V-Range Auto switch function of voltage range VOLTAGE AUTO RANGE Start auto voltage range Measure Stop auto voltage range TimeV1 Measure voltage rise/drop time TIMER VOLTAGE1 Set starting voltage value Point=0.000V Copyright © ITECH Electronic Co., Ltd. -
Page 27: Triggering Function
[Enter] to complete setting. Manual (Def): Manual trigger External: external signal trigger Hold: special command trigger Bus: BUS command trigger Timer: timer trigger Press [Esc] to exit setting. The system displays original values under Copyright © ITECH Electronic Co., Ltd. -
Page 28: Dynamic Test Function
Move to the High-Rate and press [Enter] key. TRANSITION High-Rate Low-Rate Set ascending slope and press [Enter] key. TRANSITION Rise up=30.000A/uS Set descending slope and press [Enter] key. TRANSITION Copyright © ITECH Electronic Co., Ltd. -
Page 29: Pulse Mode
10 V and 3 A respectively, the load current will switch from 1 A and 2 A. Set the dynamic test parameters and perform the test as follows: Press [Shift] + [2] keys. TRANSITION Copyright © ITECH Electronic Co., Ltd. -
Page 30: Toggle Mode
3.9.3 Toggle mode Under toggle mode, after enabling dynamic test operation, the load will be switched continuously between A value and B value after receipt of every trigger signal. Copyright © ITECH Electronic Co., Ltd. - Page 31 Start dynamic test and operate key. Move to On and press [Enter] key. TRANSITION Enter the dynamic test mode. 10.0000V 0.0000A 0.00W 0 TRAN 10. Press [On/Off] key to open input and press [Shift] + key (Triggering Copyright © ITECH Electronic Co., Ltd.
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Page 32: Ocp Test Function
3.10 OCP test function The IT8800 series electronic load is provided with overcurrent protection test function (OCP). Under OCP test mode, when input voltage reached Von value, delay for a while for the electronic load to latch. Ascend value by step value at regular interval. -
Page 33: Opp Test Function
STOP 3.11 OPP test function The IT8800 series electronic load is provided with overpower protection test function (OPP). Under OPP test mode, when input voltage reached Von value, delay for a while for the electronic load to latch. Ascend value by step value at regular interval. -
Page 34: Battery Discharge Test Function
STOP 3.12 Battery discharge test function In the IT8800 series electronic load, constant current mode is applied for discharge test with programmatic setting of stop voltage/capacity/discharging time If stop voltage is set as the stop condition, the system determines whether the battery is about to reach the set threshold value or unsafe status when the battery voltage is low, and if yes, an automatic stop will be activated. -
Page 35: Cr-Led Test Function
Function and Features 3.13 CR-LED test function With adding of diode break-over voltage setting in the IT8800 series electronic load under conventional CR mode, the electronic load only works when voltage applied at its both ends is higher than the diode break-over voltage to give a real simulation of diode working principle, i.e., the ripple current at real... -
Page 36: Configuration Save Function
Press [Shift] + [9] keys to enter configuration menu. Set voltage value in Voltage on under configuration menu to control on/off status of electronic load. When VON LATCH function is started, it indicates that Von Point latches load Copyright © ITECH Electronic Co., Ltd. -
Page 37: Protective Function
VF pin of the 8-pin connector on rear board of the load outputs TTL high level and the VF pin can be used for controlling output status of the power to be tested. Copyright © ITECH Electronic Co., Ltd. -
Page 38: Overcurrent Protection (Ocp)
At this time, the load will automatically be OFF and VFD will display OTP. At the same time, OT and PS bits of the status register will be set and keep till reset. Clear overtemperature protection Copyright © ITECH Electronic Co., Ltd. -
Page 39: List Operation
2. Operate Left/Right key and move to the High-Rate and press [Enter] key. EDIT LIST High-Rate Low-Rate Set CC range and press [Enter] key. EDIT LIST Current Range=3A Edit number of steps. Press [2] key to edit two steps. Press [Enter] key. EDIT LIST File Step=2（2-84） Copyright © ITECH Electronic Co., Ltd. - Page 40 Recall. And press [Enter] for confirmation. LIST On Recall Edit Select edited files and press [Enter] for confirmation. Recall List File=1 Operate key and move to On. Press [Enter] key (The Trig lamp Copyright © ITECH Electronic Co., Ltd.
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Page 41: Terminal Function Of Rear Board
Remote-Sense. Press [Enter] key. 2. Select ON and start Sense function. Set load in remote sense measurement mode. 3. Remote sense measurement is connected. Refer to figure below for detailed wiring. Copyright © ITECH Electronic Co., Ltd. -
Page 42: External Trigger Function
The 0-10V analog quantity output signal of current monitoring output terminal represents input current to which the terminal belongs from 0 to full range. An external voltmeter or oscilloscope can be connected to display input current change. Copyright © ITECH Electronic Co., Ltd. -
Page 43: External Signal Control Interface
1 of the interface and switch CV mode through pin 6. 3.21 Auto test function The IT8800 series electronic load delivers strong auto test functions, which can analog several tests. A total of 10 groups of test files can be edited, and each group test file has 10 steps. - Page 44 Tpf is delay time before measurement. 12. Set conditions for stop test. COMPLETE means to stop after all tests are completed and FAILURE means to stop in case of test error. Press [Enter] key. Copyright © ITECH Electronic Co., Ltd.
- Page 45 To recall edited test files from EEPROM quickly after re-energizing instrument, refer to the method below. Press [Shift] + [6] keys. PROGRAM Recall Edit Operate key, select Recall and press [Enter] key. RECALL PROGRAM Copyright © ITECH Electronic Co., Ltd.
- Page 46 Run and press [Enter] key. PROGRAM Recall Edit Display auto test file 1. PRG01 STOP Press [Shift] + key. Operate auto test file 1. Press [Shift] + [0] key to pause auto test. Press key for next step. Copyright © ITECH Electronic Co., Ltd.
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Page 47: Chapter4 Technical Specification
±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Protection range ≒150W ≒250W ≒3.3A ≒33A ≒3.3A ≒33A ≒120V ≒120V ≒85℃ ≒85℃ specification ≒3.3/3A ≒33/30A ≒3.3/3A ≒33/30A current Short circuit voltage ≒35mΩ ≒35mΩ ≒35mΩ ≒35mΩ resistance Input 150KΩ 150KΩ impedence Copyright © ITECH Electronic Co., Ltd. - Page 48 ±(0.2%+0.2%FS) Protection range ≒200W ≒250W ≒3.3A ≒16.5A ≒6.6A ≒66A ≒500V ≒120V ≒85℃ ≒85℃ specification ≒3.3/3A ≒16.5/15A ≒6.6/6A ≒66/60A current Short circuit voltage ≒300mΩ ≒300mΩ ≒30mΩ ≒30mΩ resistance Input 1MΩ 300KΩ impedence dimension 214.5mm*88.2mm*354.6mm 214.5mm*88.2mm*354.6mm Copyright © ITECH Electronic Co., Ltd.
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Page 49: Supplementary Characteristic
Technical Specification 4.2 Supplementary characteristic Memory capacity:100 groups Suggested calibration frequency：1time/year Cooling method: Fan cool Fan-control temperature Temperature 35°C 50°C 70°C 80°C Fan status 1 scale 2 scale 3 scale OTP.load off Copyright © ITECH Electronic Co., Ltd. -
Page 50: Chapter5 References Of Load Communication Interfaces
References of Load Communication Interfaces Chapter5 References of Load Communication Interfaces IT8800 series electronic load is provided with three communication interfaces to communicate with a computer for selection, including RS232, USB and GPIB. 5.1 RS232 interface Cable connection load with both ends of COM interface (DB9) and computer. -
Page 51: Usb Interface
Press Left/Right key to find Communication. Select GPIB and set address. Input address and press [Enter] for confirmation. The load works by setting GPIB address on front board. GPIB address is saved in NVM. Copyright © ITECH Electronic Co., Ltd. -
Page 52: Appendix
Specifications of Red and Black Test Lines ITECH provides you with optional red and black test lines, which individual sales and you can select for test. For specifications of ITECH test lines and maximum current values, refer to the table below. - Page 53 Contact Us Thanks for purchasing ITECH products. In case of any doubts, please contact us as follows: 1. Refer to accompanying data disk and relevant manual. 2. Visit ITECH website: www.itechate.com. 3. Select the most convenient contact method for further information.