ITech IT8500G+ Series User Manual
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ITech IT8500G+ Series User Manual

Dc programmable electronic loads
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DC Programmable Electronic
Loads
Series
IT8500G+
User Manual
Model: IT8511G+/IT8511AG+/IT8512G+/IT8512BG+
Version:2.0

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Summary of Contents for ITech IT8500G+ Series

  • Page 1 DC Programmable Electronic Loads Series IT8500G+ User Manual Model: IT8511G+/IT8511AG+/IT8512G+/IT8512BG+ Version:2.0...
  • Page 2 Notices Warranty Safety Notices © Itech Electronic, Co., Ltd. 2021 The materials contained in this document are provided “as is”, and No part of this manual may be reproduced in any form or by any means is subject to change, without prior (including electronic storage and notice, in future editions.

  • Page 3: Limitation Of Warranty

    Warranty ITECH warrants that the product will be free from defects in material and workmanship under normal use for a period of one (1) year from the date of delivery (except those described in the Limitation of Warranty below).

  • Page 4: Safety Precautions

    Failure to comply with these precautions or specific warnings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no liability for the customer’s failure to comply with these precautions.

  • Page 5: Environmental Conditions

    2002/96/EC Waste Electrical and Electronic Equipment (WEEE) Directive This product complies with the WEEE Directive (2002/96/EC) marking requirement. This affix product label indicates that you must not discard the electrical/electronic product in domestic household waste. Copyright © Itech Electronic Co., Ltd.
  • Page 6 With reference to the equipment classifications described in the Annex I of the WEEE Directive, this instrument is classified as a “Monitoring and Control Instrument”. To return this unwanted instrument, contact your nearest ITECH office. Copyright © Itech Electronic Co., Ltd.

  • Page 7: 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 8: Table Of Contents

    3.10.6 Measurement of Voltage Rise Time ..................35 （ ） 3.10.7 Quick charge test function Only for IT8511G+ and IT8511AG+ model ......36 3.11 Saving and Recalling Settings ......................41 3.12 VON Function ..........................42 3.13 Protection Function .......................... 44 Copyright © Itech Electronic Co., Ltd.
  • Page 9 Automatic Test Function ....................48 4.1 Introduction ............................48 4.2 Operation Steps ..........................48 Chapter5 Communication Interface ....................52 Chapter6 Specifications ........................53 Appendix ..............................61 Specifications of Red and Black Test Lines ..................61 Copyright © Itech Electronic Co., Ltd.

  • Page 10: Chapter1 Inspection And Installation

    The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the electronic load size. IT8500G+ series electronic load different models are not the same size, the detail size of the electronic load is shown as below. IT8511G+/IT8511AG+ Model...
  • Page 11 Inspection and Installation Detailed Dimension Drawing IT8512G+/IT8512BG+ Model Detailed Dimension Drawing Copyright © Itech Electronic Co., Ltd.

  • Page 12: 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 13: Disassembly Of Load Handle

    1.5 Rack Mounting IT8511G+/IT8511AG+/IT8512G+/IT8512BG+ loads can be installed on standard 19-inch 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. 1.6 Connect quick charge test interface card (optional) IT-E164 is an optional accessory for IT8511G+, which facilitates the connection of the DUT during the quick charging test.

  • Page 14: Connect The Device Under Test (Dut)

    ⚫ To avoid electrical shock, before testing, please make sure the rating values of the testing cables, and do not measure the current that higher than the rating value. Copyright © Itech Electronic Co., Ltd.
  • Page 15 Inspection and Installation ⚫ Always use test cables provided by ITECH to connect the equipment. If test cables from other factories are used, please check that the test cable can withstand maximum current. Specification Test cables are not standard accessories of the instrument. Please select optional red and black test cables for individual sales based on the maximum current value.
  • Page 16 IT-E164 is connected to the quick charge device. Refer the following diagram to connect test cables. Wiring Diagram for Remote Sensing Note: Test cables and Sense cables should be as short as possible, and Sense cables should be twisted together. Copyright © Itech Electronic Co., Ltd.

  • Page 17: Chapter2 Quick Start

    Help you better use this series of loads. 2.1 Brief Introduction IT8500G+ series is a single-channel programmable electronic load with power ranges from 150W to 300W and resolution up to 0.1mV/ 0.1mA. IT8500G+ series has multiple test functions such as quick charge, dynamic, automatic test, list, battery and short circuit.

  • Page 18: Front Panel Introduction

    Quick Start 2.3 Front Panel Introduction IT8500G+ series electronic load different models have different front panels, the front panels and keyboards of different models are shown as below. IT8511G+/IT8511AG+ Model ① Power switch ⑤ Function key: ② Vacuum fluorescent display (VFD)

  • Page 19: Front Panel Keys

    Quick Start 2.4 Front Panel Keys IT8500G+ series electronic load different models have different front panel keys. The keys in the key area of IT8511G+/IT8511AG+ are as shown in the figure below. The keys in the key area of IT8512G+/IT8512BG+ are as shown in the figure below.

  • Page 20: Combination Keys

    Move the left and right keys to adjust the cursor to the specified position when setting the value. 2.5 Combination Keys The IT8500G+ series front panel keys are combined with the Shift composite keys to realize the functions marked below the keys. The detailed functions are described in the following table.

  • Page 21: Vfd Annunciators

    2.7 Rear Panel Introduction IT8500G+ series electronic load different models have different rear panels, the rear panels and keyboards of different models are shown as below. IT8511G+/IT8511AG+ Model ① Thermal window ④ Sense measurement terminal, quick charge test ②...

  • Page 22: Power-On Selftest

    Correctly connect the power cord. Press [ Power ] key to start up. The VFD display of the electronic load display the Electronic load initialization information : “System Init…”. A fter selftes t, VFD display information below. 0.0000V 0.000A 0.00W I=0.00A OFF cc Information description Copyright © Itech Electronic Co., Ltd.
  • Page 23 Check whether the fuse of electronic load is burned out. If yes, change fuse. Detailed steps: ⚫ Pull out power line and take out the fuse box at power line jack with a small screw driver. As shown below. Copyright © Itech Electronic Co., Ltd.
  • Page 24 Quick Start ⚫ If the fuse is fused, replace it with a fuse of the same specification according to the model. ⚫ After replacement, install the fuse box back to original position, as shown below. Copyright © Itech Electronic Co., Ltd.

  • Page 25: Chapter3 Functions And Characteristics

    (optional). In remote control mode, the keys on the front panel cannot work except [Local] key. Customers could through [Local] key to switch the control mode. 3.2 Operation Mode There are four operation modes of IT8500G+ series products: ⚫ Constant current mode (CC) ⚫...

  • Page 26: Constant Voltage Mode (Cv)

    Set the higher limit of power, press to confirm. P-LIMIT=100W 3.2.2 Constant Voltage Mode (CV) In constant voltage mode, the electronic load will consume enough current to maintain the input voltage at the set voltage. Copyright © Itech Electronic Co., Ltd.

  • Page 27: Constant Resistance Mode (Cr)

    3.2.3 Constant Resistance Mode (CR) In constant resistance mode, the DC load will behave as a fixed resistance value. As shown below, the load linearly changes the current value with the rising of input voltage. Copyright © Itech Electronic Co., Ltd.

  • Page 28: Constant Power Mode (Cw)

    In constant power mode, the electronic load will consume a constant power, as shown in the figure below, if the input voltage rises, the input current will decrease and the power P (= V * I) will remain at the setting value. Copyright © Itech Electronic Co., Ltd.

  • Page 29: Input On/Off Control

    VFD displays OFF, indicating that the input is turned off. The initial state of the electronic load is OFF, and the VFD display a OFF label. Copyright © Itech Electronic Co., Ltd.

  • Page 30: Key Lock Function

    Default in battery test mode at power on RUNMODE Default in automatic test mode at power on PROG_TEST OCP_TEST Default in OCP test mode at power on OPP_TEST Default in OPP test mode at power on Copyright © Itech Electronic Co., Ltd.

  • Page 31: Config Menu (Config)

    If in Off mode, the beeper will not make a sound. The default set is in on mode. 3.7 Config Menu (Config) Press (Shift)+ (Config) to enter the configuration menu. Set over current protection PROTECT function. Disable protection function Copyright © Itech Electronic Co., Ltd.
  • Page 32 By default, the Inhibit pin on the rear panel is INHIBIT INHIBIT high level (3.3V). When low level (0V) is input or shorted directly with the GND pin, the instrument will be triggered to enter the Living or Latch state. Copyright © Itech Electronic Co., Ltd.

  • Page 33: Trigger Function

    (system) to enter the system menu. POWER-ON BUZZER Press to move to TRIGGER, and press to enter the trigger source setting page. SOURCE MANUAL Press to Select trigger method, and press MANUAL:Manual trigger EXTERNAL:External signal trigger BUS:BUS command trigger Copyright © Itech Electronic Co., Ltd.

  • Page 34: List Operation

    Edit number of steps. Press key to edit two steps. Press confirm. LIST STEP=2(2-84) Edit current value in step 1 and press to confirm. STEP 01 =1A Edit slope in step 1 and press to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 35 OFF changes to ON, and the VF status indicator Trig lamp of the VFD display is illuminated). Press key to exit setting. LIST OFF CALL Press key to open input and press (Shift)+ (Trigger). L1. 0. 0 Trig Copyright © Itech Electronic Co., Ltd.

  • Page 36: Test Function

    Trig will be lighted). MODE CONTINUOUS PULSE TOGGLE Set the rising slope, press to confirm. UP=1A/uS Set the descending slope, press to confirm. DOWN=1A/uS Set level A, press to confirm. LEVEL A=1A Copyright © Itech Electronic Co., Ltd.
  • Page 37 10V, current is 3A, and load current is switched between 1A and 2A, the transient test parameters and steps are set as follows: Press (Shift)+ (Tran) , press and move to ON, press Copyright © Itech Electronic Co., Ltd.
  • Page 38 ON, press to confirm. TRAN Press to select transient operation mode as TOGGLE, then press to confirm (the indicator lamp Trig will be lighted). MODE CONTINUOUS PULSE TOGGLE Set the rising slope, press to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 39: Ocp Test Function

    9. 3.10.2 OCP Test Function IT8500G+ series electronic load supports the over current protection (OCP) test function. In the OCP mode, when input voltage reaches VON point, the DC load start to draw a current from the source after a delay time. The current value will increase by a certain step size at regular intervals.

  • Page 40: Opp Test Function

    RUNMODE to NORMAL. 3.10.3 OPP Test Function IT8500G+ series electronic load supports the over power protection (OPP) test function. In the OPP mode, when input voltage reaches VON point, the DC load start to draw a power from the source after a delay time.

  • Page 41: Battery Discharge Test

    The test mode should be set first, and then the discharge stop conditions. There are three discharge stop conditions to be set for IT8500G+ series products, which are STOP VOLT, STOP CAP, and STOP TIMER. When any of the three conditions is satisfied, the discharge is stopped and the electronic load is automatically switched to the OFF state.
  • Page 42 Set the power on state to the battery test. The steps are as follows. Press (Shift)+ (System) to enter into system menu. 0.0000V 0.000A POWER-ON BUZZER Press , select RUNMODE and confirm with 0.0000V 0.000A NORMAL Press to select BATTERY , press to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 43 (Trigger) to stop battery discharge test (load input OFF). Exit Battery Test To exit the BATTERY mode, you can press the (Shift)+ (System) buttons to enter the system menu and set the RUNMODE to NORMAL. Copyright © Itech Electronic Co., Ltd.

  • Page 44: Cr-Led Test Function

    3.10.6 Measurement of Voltage Rise Time The IT8500G+ series electronic load is provided with special voltage rise/drop time measurement function. This function gives a simple analog of voltage rise/drop speed of oscilloscope test power.

  • Page 45: Quick Charge Test Function（Only For It8511G+ And It8511Ag+ Model

    Enter key in the CC-SEL interface to switch the display of the CC line (CC1 and CC2). Test which protocols the quick charge device supports. DETECT QC2.0 DETECT…… When entering the detect test, different protocols will be scanned and tested. Copyright © Itech Electronic Co., Ltd.
  • Page 46 5V, 9V, 12V, 20V. QC3.0 Select the setting voltage of Left right the quick charge QC3.0 buttons, knob protocol, the setting range is 3.6V~20V, and the steps are +0.2V, -0.2V, +1V, -1V. Copyright © Itech Electronic Co., Ltd.
  • Page 47 (Shift)+6, Enter the quick charge test editing interface, set the relevant test parameters, after setting the last parameter, the device automatically enters the quick charge test mode, and the running test is to be triggered. The parameters are described as follow: Copyright © Itech Electronic Co., Ltd.
  • Page 48 After the test is stopped, the Go/NG terminal on the rear panel of the load will output a level switch or pulse signal according to the selected output conditions. LEVEL: Output a level switch Copyright © Itech Electronic Co., Ltd.
  • Page 49 PROG NEXT-STEP interface. If the current step is the last step, press Enter to enter the SAVE PROGRAM interface. SAVE After setting each step according to the above steps, save it to the automatic test file. Up to 10 automatic Copyright © Itech Electronic Co., Ltd.

  • Page 50: Saving And Recalling Settings

    Press Esc to exit the viewing interface and return to the prog run interface. 3.11 Saving and Recalling Settings We can save some often-used parameters in the non-volatile memory, including working mode, voltage/current value and so on. IT8500G+ series provide 100 non-volatile registers. Copyright © Itech Electronic Co., Ltd.

  • Page 51: Von Function

    VON voltage, do not set this value, otherwise it may result in unloading. You can press [Shift]+[9] (Config) to enter the configuration menu to set the VON voltage to control the ON/OFF state of the electronic load. The load has Copyright © Itech Electronic Co., Ltd.
  • Page 52 VON LATCH MODE In Latch mode, as before, the load will turn on only when the voltage exceeds VON setting, but once on, it will now stay on, even if the voltage drops to zero. Copyright © Itech Electronic Co., Ltd.

  • Page 53: Protection Function

    Functions and Characteristics 3.13 Protection Function IT8500G+ series electronic load supports the following protection function: ⚫ Over voltage protection (OVP) ⚫ Over current protection (OCP) ⚫ Over power protection (OPP) ⚫ Over temperature protection (OTP) ⚫ Sense remote reverse voltage (RRV) protection ⚫...

  • Page 54: Current Monitoring (I Monitor)

    3.15 Ripple Function IT8500G+ series DC electronic loads have test ripple function. In the main interface by pressing the up and down keys, you can read the VPK, APK value in the place where shows the power value.

  • Page 55: Multi-Channel Function

    Functions and Characteristics 3.16 Multi-channel function IT8500G+ series electronic loads provide multi-channel connection function. Multiple loads (up to 16 channels, which can be composed of different types of loads of the same series) are cascaded through the System Bus to realize the synchronization of input On/Off or working mode and other parameter settings.
  • Page 56 The automatic test function parameters parameters can be set synchronously. Quick charge (QC) The manual test protocol parameters in manual test function the QC> TEST menu can be set parameters synchronously (applicable to IT8511AG+ and IT8511G+ models only). Copyright © Itech Electronic Co., Ltd.

  • Page 57: Chapter4 Automatic Test Function

    Automatic Test Function Chapter4 Automatic Test Function This chapter introduces the IT8500G+ series electronic load automatic test operation method and process. 4.1 Introduction The electronic load automatically detects the change of the input voltage to determine whether to start the test. After the automatic test start voltage (Start)
  • Page 58 SHORT ON OFF 15. Set the type of value to be tested, move the left and right cursors to select, and press to confirm (For example, select the test value as the Copyright © Itech Electronic Co., Ltd.
  • Page 59 RUNMODE as NORMAL.. Recall the test file to run The following method can quickly recall the existing test file from the EEPROM and test it after the instrument is powered on. Operate in automatic test mode: Copyright © Itech Electronic Co., Ltd.
  • Page 60 VFD, and FAULT or PASS will be displayed after the test is over. 0.0000V 0.000A P01-01 I = 2.100A Note Press [Shift] + [0] (Pause) to stop running the automatic test. Press continue testing. Copyright © Itech Electronic Co., Ltd.

  • Page 61: Chapter5 Communication Interface

    After connecting the load to the PC via USB, if you choose the VCP mode, you need to install the ITECH driver (download it on the official website or contact the ITECH technical support staff to obtain it), otherwise the communication will not succeed.

  • Page 62: Chapter6 Specifications

    Coefficient ≤100ppm/℃ + 100ppm/℃*FS Current (％of Output/℃ +Offset) Ascenting rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Transient Descenting rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Response Time Transient 0.001～20KHz Frequency 110V ±10% or 220V ±10% AC Input voltage range No three phase Copyright © Itech Electronic Co., Ltd.
  • Page 63 *2 The scope of read-back resistance is: (1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08)) *3 The voltage/current input is no less than 10% FS *4 Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current. *5 Minimum rise time: 10%-90% current rise time Copyright © Itech Electronic Co., Ltd.
  • Page 64 0.001～1.5A/uS Transient Descenting rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Response Time Transient 0.001～20KHz Frequency 110V ±10% or 220V ±10% voltage range No three phase Frequency Range 50/60Hz AC Input Maximum current 0.3A Power factor Harmonic THDI None Copyright © Itech Electronic Co., Ltd.
  • Page 65 *2 The scope of read-back resistance is: (1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08)) *3 The voltage/current input is no less than 10% FS *4 Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current. *5 Minimum rise time: 10%-90% current rise time Parameter Model:IT8512G+ Copyright © Itech Electronic Co., Ltd.
  • Page 66 Descenting rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Response Time Transient 0.001～20KHz Frequency 110V ±10% or 220V ±10% voltage range No three phase Frequency Range 50/60Hz AC Input Maximum current 0.3A Power factor Harmonic THDI None Island Protection None Copyright © Itech Electronic Co., Ltd.
  • Page 67 *2 The scope of read-back resistance is: (1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08)) *3 The voltage/current input is no less than 10% FS *4 Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current. *5 Minimum rise time: 10%-90% current rise time Parameter Model:IT8512BG+ Copyright © Itech Electronic Co., Ltd.
  • Page 68 0.001～0.8A/uS rate*4 Transient Response Descenting 0.0001～0.2A/uS 0.001～0.8A/uS Time rate*4 Transient 0.001～20KHz Frequency 110V ±10% or 220V ±10% voltage range No three phase Frequency 50/60Hz Range AC Input Maximum 0.3A current Power factor Harmonic None Copyright © Itech Electronic Co., Ltd.
  • Page 69 *2 The scope of read-back resistance is: (1/(1/R+(1/R)*0.01%+0.08),1/(1/R-(1/R)*0.01%-0.08)) *3 The voltage/current input is no less than 10% FS *4 Ascending/descending slope: 10%-90% current ascending slope from 0 to maximum current. *5 Minimum rise time: 10%-90% current rise time Copyright © Itech Electronic Co., Ltd.

  • Page 70: 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 71 Contact Us Thanks for purchasing ITECH products. In case of any doubts, please contact us as follows: 1. Visit ITECH website: www.itechate.com. 2. Select the most convenient contact method for further information.

This manual is also suitable for:

It8511g+It8511ag+It8512g+It8512bg+

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