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+
/IT8513G+/IT8513BG+/IT8513CG+
Version:3.0

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  • Page 1 DC Programmable Electronic Loads Series IT8500G+ User Manual Model: IT8511G+/IT8511AG+/IT8512G+/IT8512BG+ /IT8513G+/IT8513BG+/IT8513CG+ Version:3.0...
  • Page 2 Notices Warranty Safety Notices © Itech Electronic, Co., Ltd. 2022 The materials contained in this No part of this manual may be document are provided “as is”, and 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 ..................38 （ ） 3.10.7 Quick charge test function Only for IT8511G+ and IT8511AG+ model ......39 3.11 Saving and Recalling Settings ......................44 3.12 VON Function ..........................45 3.13 Protection Function .......................... 47 Copyright © Itech Electronic Co., Ltd.
  • Page 9 Automatic Test Function ....................51 4.1 Introduction ............................51 4.2 Operation Steps ..........................51 Chapter5 Communication Interface ....................55 Chapter6 Specifications ........................56 Appendix ..............................70 Specifications of Red and Black Test Lines ..................70 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 Inspection and Installation IT8513G+/IT8513CG+ Model Detailed Dimension Drawing Copyright © Itech Electronic Co., Ltd.

  • Page 13: Adjustment Of Load Handle

    1.3 Adjustment of Load Handle IT8511G+/IT8511AG+/IT8512G+/IT8512BG+/IT8513G+/IT8513BG+ /IT8513CG+ loads are equipped with a handle for user to easily carry and place The load handle may be adjusted based on three methods (as shown in icons Copyright © Itech Electronic Co., Ltd.

  • Page 14: Disassembly Of Load Handle

    Align the locking mouth, and pull out the handle towards two sides. NOTE Do not use too much force and mind your hands during disassembly of load handle. 1.5 Rack Mounting Copyright © Itech Electronic Co., Ltd.

  • Page 15: Connect Quick Charge Test Interface Card (Optional)

    Inspection and Installation IT8511G+/IT8511AG+/IT8512G+/IT8512BG+/IT8513G+/IT8513BG+/IT8513CG + 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 16: Connect The Device Under Test (Dut)

     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.
  • Page 17 Sense function and the Sense terminal on the rear panel is not connected, which will cause the instrument to report Sense reverse connection protection (RRV). Refer the following diagram to connect test cables. Wiring Diagram for Remote Sensing Copyright © Itech Electronic Co., Ltd.
  • Page 18 Inspection and Installation Note: Test cables and Sense cables should be as short as possible, and Sense cables should be shielded twisted. Copyright © Itech Electronic Co., Ltd.

  • Page 19: 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 20: 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+/IT8513BG+ Model ① Power switch ⑤ Function key: ② Vacuum fluorescent display (VFD)

  • Page 21: Front Panel Keys

    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+/IT8513G+/IT8513BG+/ IT8513CG+ are as shown in the figure below.

  • Page 22: 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 23: Vfd Annunciators

    The load input is off. Error An error has occurred. Constant current mode Trig Waiting for the trigger signal. Constant voltage mode Sense Remote sensing is turned Constant resistance Prot Protection function mode turned on. Copyright © Itech Electronic Co., Ltd.

  • Page 24: Rear Panel Introduction

    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 25: Power-On Selftest

    Do not use terminal board without protective grounding. Before operation, be sure that the power supply is well grounded.  To avoid burning out, pay attention to marks of positive and negative polarities before wiring. Selftest steps Normal selftest procedures: Copyright © Itech Electronic Co., Ltd.
  • Page 26 ”(On) status. Yes => 3 No => Please check the [Power] key to start power and check whether the exception is removed. Check whether the power voltage setting of the electronic load is larger Copyright © Itech Electronic Co., Ltd.
  • Page 27 As shown below.  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 28: 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 29: 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 30: 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 31: 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 32: 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 an OFF label. Copyright © Itech Electronic Co., Ltd.

  • Page 33: Key Lock Function

    1: indicates 11-20 groups, and so on USBTMC USBTMC USBVCP USBVCP If VCP is selected, the built-in device communication parameters are 9600/8/N/1. Only available for COMM IT8512G+/IT8512BG+/IT8513G+ /IT8513BG+/IT8513CG+ models. IP address subnet mask gateway address Copyright © Itech Electronic Co., Ltd.
  • Page 34 This item can set the key sound state. If in On mode, the electronic load will issue beeper sound when you press any button. If in Off mode, the beeper will not make a sound. The default set is in on mode. Copyright © Itech Electronic Co., Ltd.

  • Page 35: Config Menu (Config)

    For details, see "3.12 VON Function". LIVING VON point living state VON POINT = 0.10V Set the VON value LATCH VON point latch state VON POINT = 0.10V Set the VON value Copyright © Itech Electronic Co., Ltd.

  • Page 36: Trigger Function

    *TRG, the load will perform a trigger operation. The steps to select a trigger source are as follows: Steps Press (Shift)+ (system) to enter the system menu. POWER-ON BUZZER Press to move to TRIGGER, and press to enter the trigger Copyright © Itech Electronic Co., Ltd.

  • Page 37: List Operation

    (List) , the interface displayed as follows: LIST CALL Press ,and move to EDI, then press to confirm. Set the CC range. LIST RANGE=3A Edit number of steps. Press key to edit two steps. Press Copyright © Itech Electronic Co., Ltd.
  • Page 38 Press and move to OFF, then press to confirm (In this case, OFF changes to ON, and the VF status indicator Trig lamp of the VFD display is illuminated). Press key to exit setting. Copyright © Itech Electronic Co., Ltd.

  • Page 39: Test Function

    (Tran) , and press to select ON, press TRAN Press to select CONTINUOUS, and press to confirm(the indicator lamp Trig will be lighted). MODE CONTINUOUS PULSE TOGGLE Set the rising slope, press to confirm. UP=1A/uS Copyright © Itech Electronic Co., Ltd.
  • Page 40 At the trigger, the load switches to the B value and stays at that level for the B timing value. Then the load switches back to the A value and stays there until another trigger is received. Copyright © Itech Electronic Co., Ltd.
  • Page 41 1A and 2A, the transient test parameters and steps are set as follows: Press (Shift)+ (Tran) , move key to select ON, press to confirm. TRAN Press to select transient operation mode as TOGGLE, then Copyright © Itech Electronic Co., Ltd.

  • Page 42: 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 43: 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 44: Battery Discharge Test

    To exit the OPP mode, you can press the [Shift]+ [8] (System) buttons to enter the system menu and set the RUNMODE to NORMAL. 3.10.4 Battery Discharge Test IT8500G+ series electronic load supports the discharge test function of the battery in CC/CW/CR mode. Copyright © Itech Electronic Co., Ltd.
  • Page 45 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 46 (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 47: 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 48: 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 49 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 50 (Shift)+6, Enter the quick charge test editing interface, set the Press 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 51 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 52 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 53: 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 54: 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 55 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 56: 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 57: 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 58: 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 59 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 60: 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 61 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 62 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 63 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 64: 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 65: Chapter6 Specifications

    Coefficient ≤100ppm/℃ + 100ppm/℃*FS Current (％of Output/℃ +Offset) Ascending rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Descending Transient 0.0001～0.2A/uS 0.001～1.5A/uS rate*4 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 66 *1 The voltage/current input is no less than 10% FS *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. Copyright © Itech Electronic Co., Ltd.
  • Page 67 Ascending rate*4 0.0001～0.2A/uS 0.001～1.5A/uS Descending Transient 0.0001～0.2A/uS 0.001～1.5A/uS rate*4 Response Time Transient 0.001～20KHz Frequency 110V ±10% or 220V ±10% voltage range No three phase AC Input Frequency Range 50/60Hz Maximum current 0.3A Power factor Copyright © Itech Electronic Co., Ltd.
  • Page 68 *1 The voltage/current input is no less than 10% FS *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. Parameter Model:IT8512G+ Copyright © Itech Electronic Co., Ltd.
  • Page 69 Descending 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 70 *1 The voltage/current input is no less than 10% FS *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. Parameter Model:IT8512BG+ Copyright © Itech Electronic Co., Ltd.
  • Page 71 0.001～0.8A/uS rate*4 Transient Response Descending 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 72 *1 The voltage/current input is no less than 10% FS *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. Copyright © Itech Electronic Co., Ltd.
  • Page 73 ≤100ppm/℃ + 100ppm/℃*FS Current (％of Output/℃ +Offset) Ascending 0.001～0.2A/uS 0.01～1A/uS rate*4 Transient Descending 0.001～0.2A/uS 0.01～1A/uS Response Time rate*4 Transient 0.001～20KHz Frequency 110V ±10% / 220V ±10% voltage range No three-phase AC Input Frequency 50/60Hz Range Copyright © Itech Electronic Co., Ltd.
  • Page 74 *1 The voltage/current input is no less than 10% FS *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. Copyright © Itech Electronic Co., Ltd.
  • Page 75 +Offset) Ascending rate*4 0.0001～0.2A/uS 0.001～0.8A/uS Descending Transient Response 0.0001～0.2A/uS 0.001～0.8A/uS rate*4 Time Transient 0.001～20KHz Frequency 110V ±10% / 220V ±10% voltage range No three-phase AC Input Frequency Range 50/60Hz Maximum current 0.3A Power factor Copyright © Itech Electronic Co., Ltd.
  • Page 76 *1 The voltage/current input is no less than 10% FS *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. Parameter Model: IT8513G+ Copyright © Itech Electronic Co., Ltd.
  • Page 77 +Offset) Ascending 0.001～0.2A/uS 0.01～1.6A/uS rate*4 Transient Response Descending 0.001～0.2A/uS 0.01～1.6A/uS Time rate*4 Transient 0.001～20KHz Frequency 110V ±10% / 220V ±10% voltage range No three-phase Frequency 50/60Hz AC Input Range Maximum 0.3A current Power factor Copyright © Itech Electronic Co., Ltd.
  • Page 78 *1 The voltage/current input is no less than 10% FS *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. Copyright © Itech Electronic Co., Ltd.

  • Page 79: 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 80 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.

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