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ITech IT-M3900D Series User Manual

High power programmable dc power supply
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High Power Programmable
DC Power Supply
IT-M3900D Series User Manual
Model: IT-M3900D Series
Version: V1.0/01,2022

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Summary of Contents for ITech IT-M3900D Series

  • Page 1 High Power Programmable DC Power Supply IT-M3900D Series User Manual Model: IT-M3900D Series Version: V1.0/01,2022...
  • Page 2 CAUTION sign until the in- pose. ITECH shall not be held liable Manual Part Number dicated conditions are for errors or for incidental or indirect fully understood and met.

  • Page 3: Warranty

    Warranty ITECH warrants that the product will be free from defects in material and work- manship 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 Symbols

    Failure to comply with these precautions or specific warn- ings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no li- ability for the customer’s failure to comply with these precautions.
  • Page 5 This instrument is used for industrial purposes, do not apply this product to IT power supply system. • Never use the instrument with a life-support system or any other equipment subject to safety requirements. Copyright © Itech Electronic Co., Ltd.

  • Page 6: Environmental Conditions

    Make sure the vent hole is always unblocked. Environmental Conditions The instrument is designed for indoor use and an area with low condensation. The table below shows the general environmental requirements for the instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 7: Regulation Tag

    The service life of the product is 10 years. The product can be used safely within the environmental protection period; oth- erwise, the product should be put into the recycling system. Copyright © Itech Electronic Co., Ltd.

  • Page 8: Waste Electrical And Electronic Equipment (Weee) Directive

    According to the equipment classifi- cation in Annex I of the WEEE direc- tive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the near- est sales office of ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 9: Compliance Information

    2. Connection of the instrument to a test object may produce radiations beyond the specified limit. 3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010+A1:2016 Copyright © Itech Electronic Co., Ltd.

  • Page 10: Table Of Contents

    4.5.5 Set Under-Voltage Protection (UVP)............58 4.5.6 Over-Temperature Protection (OTP)............59 4.5.7 Sense Reverse Protection................59 4.6 Function Menu for Power Supply................60 4.6.1 LIST Function ....................60 4.6.2 Battery Charging Test Function..............67 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 7 Routine Maintenance ..................... 183 7.1 Instrument Self-Test..................... 183 7.2 Cleaning and Maintenance .................. 183 7.3 Contact of ITECH Engineers ................184 7.4 Return for Repair....................185 A Appendix ........................187 A.1 Specifications of Red and Black Test Cables ............. 187 A.2 Troubleshooting....................

  • Page 12: Quick Reference

    The IT-M3900D series is a single channel output programmable DC power sup- ply. The density structure design can effectively save rack space. Also with wide-range output design, can provide a wider range of voltage and current combinations within the specified power range.
  • Page 13 Model Current Power Height Level IT-M3901D-10-170 170A 1.7KW IT-M3903D-10-340 340A 3.4KW IT-M3905D-10-510 510A 5.1KW IT-M3910D-10-1020 1020A 10.2KW IT-M3902D-32-80 IT-M3904D-32-160 160A IT-M3906D-32-240 240A IT-M3912D-32-480 480A 12KW IT-M3902D-80-40 IT-M3904D-80-80 IT-M3906D-80-120 120A IT-M3912D-80-240 240A 12KW 300V IT-M3902D-300-20 Copyright © Itech Electronic Co., Ltd.

  • Page 14: Front-Panel Overview

    1 Power On/Off switch 5 Numeric and composite keys 2 USB storage device connec- 6 Push-on knob tion port 7 Left, and right cursor navigation keys 3 Vacuum fluorescent display (VFD) 4 Function and composite keys Copyright © Itech Electronic Co., Ltd.

  • Page 15: Keyboard Introduction

    Enter key 3 Vacuum fluorescent display 7 Push-on knob (VFD) 4 Function and composite keys 1.3 Keyboard Introduction The keyboard introduction of this series instrument is shown as follows. 1U Model 2U Model Copyright © Itech Electronic Co., Ltd.
  • Page 16 (Upper limit of power) , the lower limit of the power is 0. [Recall] Returns the instrument to the specified setup. [Enter] Operation confirmation key [Esc] Press this key to exit the current operation interface. [0]-[9] Numeric keys +/– Positive and negative signs Copyright © Itech Electronic Co., Ltd.
  • Page 17 [Shift]+[Recall] Save the common parameter settings. (Save) [Shift]+[1] (Log) Enter the data logging function menu. [Shift]+[2] (Lock) Turn the keyboard lock on or off. [Shift]+[3] (Local) Switch remote control mode to local control mode. Copyright © Itech Electronic Co., Ltd.

  • Page 18: Push-On Knob

    [Enter] key to confirm the operation. 1.5 Rear Panel Introduction The rear panel of the of the this series model (after removing the protective cov- er) is shown below. 1U Models Copyright © Itech Electronic Co., Ltd.

  • Page 19: Vfd Indicator Lamps Description

    The output of the Sense Sense function of the power power supply is supply is enabled. turned off. The power supply is Rear Analog function begin to in a state of con- work. stant voltage output. Copyright © Itech Electronic Co., Ltd.

  • Page 20: Configuration Menu Function

    2. Press [Enter] to select the desired menu item. Enter the parameter setting interface of this menu item. 3. After finishing the menu setting, press [Enter] key to save the setting. Press [Esc] key to return to the previous menu level. Copyright © Itech Electronic Co., Ltd.
  • Page 21 Once the voltage upper limit is Voltage Max modified here, the parameters related to the voltage setting will be limited by the upper limit here. Copyright © Itech Electronic Co., Ltd.

  • Page 22: System Menu Function

    Set the sense function state. Turn the sense function off. Turn the sense function on. ListTrig Source Set the trigger method for the List files running. Immediate Trigger immediately Manual trigger Manual Bus trigger Copyright © Itech Electronic Co., Ltd.
  • Page 23 IP Mode: Auto IP: 0.0.0.0 Mask: 0.0.0.0 Gateway: 0.0.0.0 DNS1: 0.0.0.0 DNS2: 0.0.0.0 MAC: 8C:C8:F4:40:01:E1 MDNS Status: HostName: HostDesc: Domain: TCPIP:INSTR Socket Port: 30000 Configure LAN IP information. IP-Conf Configure LAN IP mode. IP-Mode Copyright © Itech Electronic Co., Ltd.
  • Page 24 Configure the LAN services. Serv-Conf MDNS: MDNS service state. • • PING: PING service state. • • Telnet-scpi: telnet-scpi service state. • • Web: Web service state. • • VX-11: VX-11 service state. • • Copyright © Itech Electronic Co., Ltd.
  • Page 25 Set Digital I/O By default, the menu item displays 7 options. You can set parameters Digital Port for each option respectively. After setting, the corresponding change to each option becomes valid immediately. When re-entering DigPort, Copyright © Itech Electronic Co., Ltd.

  • Page 26: Options Introduction

    2.5.4 GPIB Interface (Optional). – IT-E177: Interface card that includes RS-232 communication interface, external analog and other functions. The accessory has a total of 10 pins, and the details of each pin are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 27 Fiber optic modules and cables are used for data transmission and commu- nication between parallel units, and are highly resistant to interference. The fiber optic module and cable are the necessary accessories for the parallel Copyright © Itech Electronic Co., Ltd.
  • Page 28 • IT-E165B: Anti electromotive force module It is suitable for motor products, which can prevent the electromotive force generated during the operation of the motor from damaging the power sup- ply products. Copyright © Itech Electronic Co., Ltd.

  • Page 29: Inspection And Installation

    Depending on the instru- ment model. For details, see 2.3 Con- necting the Power Cord. USB communication This accessory is se- cable lected when the USB in- terface is used for starting up remote operation. Copyright © Itech Electronic Co., Ltd.

  • Page 30: Instrument Size Introduction

    The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the instrument size. The detailed dimension drawings of this series instrument are as follows (unit: mm, deviation: ±1 mm): Copyright © Itech Electronic Co., Ltd.
  • Page 31 Inspection and Installation 1U Models Copyright © Itech Electronic Co., Ltd.

  • Page 32: Connecting The Power Cord

    Inspection and Installation 2U Models 2.3 Connecting the Power Cord Precautions To prevent electric shock and damage to the instrument, observe the following precautions. Copyright © Itech Electronic Co., Ltd.
  • Page 33 Categories of Power Cords The standard power cord specifications for this series instruments are divided into the following types according to different regions: Copyright © Itech Electronic Co., Ltd.
  • Page 34 High Input 3-Phase 3-Phase Rated Output Range Range Range Power -145 180-200 200-264 180-264 342-520 1.7kW 1.7kW 1.7kW 1.7kW 1.7kW 3.4kW 2.3kW 3.4kW 3.4kW 5.1kW 2.3kW 3.5kW 5.1kW 10.2kW 4.6kW 7.1kW 10.2kW 2.3kW 3.5kW Copyright © Itech Electronic Co., Ltd.
  • Page 35 When the instrument is connected to the three phases of the three-phase power supply terminal, there is no need to pay attention to the current shar- ing problem, just connect it directly. The wiring diagram is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 36 2. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals. 3. Remove the protective cover outside the AC input terminal on the rear panel. Copyright © Itech Electronic Co., Ltd.

  • Page 37: Connecting The Device Under Test (Dut)

    2.4 Connecting the Device Under Test (DUT) This section describes how to connect the test cables between the instrument and DUT. Precautions To prevent electric shock and damage to the instrument, observe the following precautions. Copyright © Itech Electronic Co., Ltd.
  • Page 38 Short circuit may cause severe accident. • Always use test cables provided by ITECH to connect the equip- ment. If test cables from other factories are used, please confirm the maximum current that the test cables can withstand.
  • Page 39 The connection diagram and steps of remote measurement are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 40 Lethal voltages may remain at the output terminals after turn-off. Verify that there is no dan- gerous voltage on the output or sense terminals before touching them. Copyright © Itech Electronic Co., Ltd.

  • Page 41: Remote Interface Connection

    • VCP: Virtual serial port. For Win7 system, you can download IT-M3900 VCP driver from ITECH official website or contact technical support engineer; for Win10 system, you do not need to install VCP driver. The operation steps to change the USB interface type in System Menu are as follows.

  • Page 42: Lan Interface

    3. Press the Left/Right key to select LAN and press [Enter]. 4. Press the Left/Right key to select Info and press [Enter]. 5. Rotate the knob to view the LAN parameters. See the information in 1.8 Sys- tem Menu Function for details. Copyright © Itech Electronic Co., Ltd.
  • Page 43 Socket Port: This value indicates the port number corresponding to the service. Serv-Conf Configurable services include: MDNS, PING, Telnet-scpi, Web, VXI-11, and Raw Socket. How to Configure • IP-Conf Take manual configuration as an example. The steps are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 44 PC over LAN interface and enter the instrument's IP address into the address bar at the top of your PC's Web browser, you can access the front pan- el control functions including the LAN configuration parameters. Copyright © Itech Electronic Co., Ltd.
  • Page 45 This page allows you to monitor and control the instrument; • LAN Configuration: Reconfigure the LAN parameters; • Manual: Go to the ITECH official website and view or download the relevant documents. • Upload: Performs a system upgrade. Copyright © Itech Electronic Co., Ltd.

  • Page 46: Can Interface

    The instruments allow any combination of up to six simultaneous socket and telnet connections to be made. ITECH instruments have SCPI socket services, which can be used to send and receive SCPI commands, queries, and query responses. All commands must be terminated with a newline for the message to be parsed.
  • Page 47 Ensure you have used the correct communication cable (CAN_H, CAN_L). Please pay attention that some cable may not have a correct internal wiring even it is with an appropriate plug. • The interface cable is correctly connected (CAN_H to CAN_H, CAN_L to CAN_L). Copyright © Itech Electronic Co., Ltd.

  • Page 48: Gpib Interface (Optional)

    1. Ensure that the instrument's power switch is off, that is, the instrument is in Power Off state. 2. Insert the separately purchased GPIB interface card into the card slot on the rear panel of the instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 49: Interface (Optional)

    When using the RS-232 interface for communication, connect the pin 1, pin 2, and pin 3 of the IT-E177 to the PC. The pin description is as follows: Pins Description TXD, transmit data RXD, receive data DGND, ground Copyright © Itech Electronic Co., Ltd.
  • Page 50 Make sure the correct cable and adapter are connected. Note that internal wiring may not be correct even if the cable has a suitable plug; • The cable must be connected to the correct serial ports (COM1, COM2, etc) of PC. Copyright © Itech Electronic Co., Ltd.

  • Page 51: Getting Started

    When you turn the POWER switch on for the first time after purchase, the instru- ment starts with its factory default settings. Each time thereafter, the instrument starts according to the setting that you selected as outlined in 5.6 Set the Power-on State (PowerOn). Copyright © Itech Electronic Co., Ltd.
  • Page 52 AC input power to the unit. Power Switch Introduction The power switch is located in the lower left corner of the front panel. The power switch is a button, and pressing once indicates ON and pressing again indicates OFF. Copyright © Itech Electronic Co., Ltd.
  • Page 53 Error message Error Description Eeprom Failure The EEPROM is damaged. Main FrameInitializeLost The system setting data is lost. Calibration Data Lost The factory calibration data in EE- PROM is lost. Copyright © Itech Electronic Co., Ltd.
  • Page 54 There can only be one single unit as the Master, and the other single units must be set to Slave. After the setting is completed, power off and restart each single unit. 5. If the instrument still does not start, contact ITECH technical support engineer. Copyright © Itech Electronic Co., Ltd.

  • Page 55: Set Output Value

    • The user can set the parameters related to instrument protection function in the Protect menu, including OCP /OVP/OPP /UCP/UVP. • Function menu includes output list, batterycharging test function and so on. Copyright © Itech Electronic Co., Ltd.

  • Page 56: On/Off Control

    DUT. If the power supply has no output after the output is turned on, check the voltage and current setting value, set the voltage and current to a non-zero value, and then turn on the output. Copyright © Itech Electronic Co., Ltd.

  • Page 57: Power Supply Function

    When [I-set] key is pressed, the key light is lit and the output current value can be set. Press numeric keys or rotate the knob to adjust the value in the current setting area indicated by the cursor. This value takes effect when you press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 58: Set The Output Power

    A current limit value should also be set. The current limit should always be set to a value that is greater than the actual input current requirement of the external load. The following figure shows the CV priority operating locus of the output. Copyright © Itech Electronic Co., Ltd.
  • Page 59 The following figure shows the CC priority oper- ating locus of the output. Copyright © Itech Electronic Co., Ltd.
  • Page 60 5. Rotate the knob to set the voltage/current rise time. When finished, press [Enter]. 6. Set the other Config menu items in the same way. 7. Set the output voltage and current value. • CV priority Copyright © Itech Electronic Co., Ltd.

  • Page 61: Set The Internal Resistance

    8. Set the Sink Res value and press [Enter]. If set to 0, the function is equivalent to that Sink Res is selected as OFF. The following takes the setting of 10Ω as an example to introduce the actual test results. Copyright © Itech Electronic Co., Ltd.

  • Page 62: Set The Output-On/Output-Off Delay

    Sense reverse connection protection. The descriptions of Protect menu are listed in the table below. Protection function menu for the power supply Protect Overvoltage protection Copyright © Itech Electronic Co., Ltd.
  • Page 63 Because Warm-up this transient condition should not be consid- ered as an undercurrent fault and there is no need to trigger protection. Level UCP limit Copyright © Itech Electronic Co., Ltd.
  • Page 64 When the instrument enters the protection state, the buzzer sounds (if Beep menu item is set as default state On), the VFD status indicators Prot and Off are lit, and [On/Off] is turned off. Copyright © Itech Electronic Co., Ltd.

  • Page 65: Set Over-Voltage Protection (Ovp)

    Users can enable the OVP function and set the protection limit Level and pro- tection delay time Delay. When the voltage (i.e., the Meter value) is greater than this protection limit and the delay time is exceeded, the power supply will enter the OVP state. Copyright © Itech Electronic Co., Ltd.

  • Page 66: Set Over-Current Protection (Ocp)

    Delay. When the current (i.e., the Meter value) is greater than this protection limit and the delay time is exceeded, the power supply will enter the OCP state. Possible Cause Many reasons can cause OCP, the details are as follows: Copyright © Itech Electronic Co., Ltd.

  • Page 67: Set Over-Power Protection (Opp)

    The power supply outputs a high power due to a fault. How to Set The operation steps to set OPP are as follows. 1. Press the composite keys [Protect] on the front panel to enter the protection menu. (1U Model) Copyright © Itech Electronic Co., Ltd.

  • Page 68: Set Under-Current Protection (Ucp)

    4. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface. 5. Set the warm-up time Warm-up, protection limit Level and delay time Delay in sequence, and then press [Enter] to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 69: Set Under-Voltage Protection (Uvp)

    [Enter] to confirm. The VFD screen returns to the Protect menu and the UVP setting (take 10S, 1V, 1S as an example) is displayed as follows: PROTECT 5.UVP 10S, 1V, 1.000S Copyright © Itech Electronic Co., Ltd.

  • Page 70: Over-Temperature Protection (Otp)

    When you return power to the instrument, verify that the cooling fan is running. If not, please contact ITECH Technical Support. Leaving the instrument powered on with an inoperative cooling fan may result in damage to the instrument.

  • Page 71: Function Menu For Power Supply

    The descriptions of list function menu are listed in the table below. LIST List menu Indicates to enter the List run mode, waiting for the trigger to run the currently selected List file. Open Select the List file to open. Copyright © Itech Electronic Co., Ltd.
  • Page 72 After the List program finishes run- ning, the output is kept as the set- ting in the last step, and the working mode remains as the set- ting in the List file. None: No trigger signal output. Copyright © Itech Electronic Co., Ltd.
  • Page 73 7. Set the parameters of step 2 in the same method. 8. Set the number of list repetitions Repeat, and press [Enter] to confirm. 9. Set the End State as Normal, and press [Enter] to confirm. Copyright © Itech Electronic Co., Ltd.
  • Page 74 LIST RUN is displayed in the lower right corner. Select Internal List Program You can select a List file saved inside the instrument to be in the Open state and wait for subsequent triggers to run. The procedures are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 75 8. Press the Left/Right key to select Yes and press [Enter]. 9. Set the name of the List file to be exported, and press [Enter]. Indicates that the selected List file in Open is exported to the USB flash drive. Copyright © Itech Electronic Co., Ltd.
  • Page 76 Left/Right key to select Stop, then the running will be stopped, and the Function menu item will be displayed, you can re-enter the Function menu for editing; if Reset is selected, it means to stop the present Copyright © Itech Electronic Co., Ltd.
  • Page 77 Import via U disk The instrument supports importing the edited .csv format file (the template can be downloaded from ITECH official website or contact ITECH to obtain) through the USB interface on the front panel, and generating voltage or cur- rent values after parsing, and then outputting complex voltage or current waveforms according to the time width specified by the user.

  • Page 78: Battery Charging Test Function

    For detailed function usage, please refer to IT9000–PV3900 User Manual. 4.6.2 Battery Charging Test Function This series power supply provides the battery charging test function. Suitable for charging tests on all types of portable batteries. Copyright © Itech Electronic Co., Ltd.
  • Page 79 Cut Off Capacity Battery test cut-off capacity 1. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en- ter the function menu. 2. Use knob to select 2.BATTERY: Off and press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 80: Built-In Waveform Function

    4.6.3 Built-in Waveform Function This series power supply supports built-in waveforms for user to execute the test directly. The protocols/standards involved in the built-in waveforms include the following: • DIN40839 Copyright © Itech Electronic Co., Ltd.
  • Page 81 ISO16750-2 ISO21848 42V Road vehicles — Electrical and electronic equipment for a supply volt- age of 42 V — Electrical loads SAEJ1113-11 SAEJ1113-11 Waveform protocol LV123 LV123 Waveform protocol LV124 LV124 Waveform protocol Copyright © Itech Electronic Co., Ltd.
  • Page 82 For automotive startup voltage waveform, the startup voltage can also be set based on customers’ requirements. In this way, the user can create waveform between 8V to 32V. Copyright © Itech Electronic Co., Ltd.
  • Page 83 24V. The user customizes the starting voltage of User-defined the automotive starting waveform. User-de- fined volt- V=8.00V age value DIN40839 for 12V System Steps Voltage (V) Current(A) Width(mS) Slope(mS) 2000 Copyright © Itech Electronic Co., Ltd.
  • Page 84 8V-16V, the waveform is consistent with standard 12V; when the waveform program is divided into 16V-32V, the wave- form is consistent with the standard 24V waveform. The waveform diagram is shown below. Copyright © Itech Electronic Co., Ltd.
  • Page 85 Output pulse waveform completely meets the International Standard ISO- 16750-2, convenient for quick recall by the user. Simulate the waveform to verify the anti-interference per- formance of the automotive electronics’ products. ISO16750-2 Automotive short-time voltage drop Short-Drop waveform Copyright © Itech Electronic Co., Ltd.
  • Page 86 24V starting profile cor- responding to Level 1. Select the voltage/duration of 24V starting profile cor- responding to Level 2. Select the voltage/duration of 24V starting profile cor- responding to Level 3. Load-Dump Load dump curve Copyright © Itech Electronic Co., Ltd.
  • Page 87 Automotive Short-time Voltage Drop Waveform This waveform simulates an instantaneous drop in the supply voltage when the car is started. This test simulates the effect when a conventional fuse element melts in another circuit. • 12V system Copyright © Itech Electronic Co., Ltd.
  • Page 88 This test verifies the reset behavior of the DUT at different voltage drops. This test is applicable to equipment with reset function, e.g. equipment containing mi- crocontroller. Apply the test pulse simultaneously in figure below to all relevant Copyright © Itech Electronic Co., Ltd.
  • Page 89 Simulates the effects of rippled DC voltage on DC power when the car is started. From the constant voltage line in the original standard DIN40839 volt- age waveform, the voltage curve in t8 duration is upgraded to a curve containing a 2Hz AC voltage waveform. Copyright © Itech Electronic Co., Ltd.
  • Page 90 I, II, III, and IV defined in the above standard correspond to levels 1, 2, 3, and 4 in the setup menu. • Standards for 24V system: How to recall this waveform from menu (take 12V system as an example): Copyright © Itech Electronic Co., Ltd.
  • Page 91 The pulse shape and parameters for an alternator without centralized load dump suppression (Test A) are given in follow. Copyright © Itech Electronic Co., Ltd.
  • Page 92 The pulse shape and parameters for an alternator with centralized load dump suppression (Test B) are given in follow. Copyright © Itech Electronic Co., Ltd.
  • Page 93 If not otherwise agreed, use the upper voltage level with the upper value for in- ternal resistance or use the lower voltage level with the lower value for internal resistance. The following general considerations of the dynamic behavior of alternators dur- ing load dump apply: Copyright © Itech Electronic Co., Ltd.
  • Page 94 Supply Voltage of 42 V — Electrical loads A test wave completely conforming to International Standard ISO21848 is built inside the device, which can be used for the test of Electrical and electronic Copyright © Itech Electronic Co., Ltd.
  • Page 95 42V electrical system, where the upper limit is the protection volt- age of throw load. After turning on [On/Off] and triggering the waveform output, the instrument will apply a test pulse to the DUT, as shown below: Copyright © Itech Electronic Co., Ltd.
  • Page 96 (for example, device installed with one or several micro controllers) . After turning on [On/Off] and triggering the waveform output, the instrument will apply test pulse and detect the reset performance of the DUT, as shown in the figure below. Copyright © Itech Electronic Co., Ltd.
  • Page 97 DUT simultaneously. • t: Time time (in ms) t1: 5ms • U: Voltage (in V) t2: 15ms • : 18V t3: 50ms • : 21V t4: 10000ms • : 42V t5: 100ms Copyright © Itech Electronic Co., Ltd.
  • Page 98 4–1 Parameter Description Select the 24V voltage system For details, see Table 4–1 Parameter Description Test–5 Load dump waveform Select centralized load dump Test A unsuppression Select the 12V volt- age system Test pulse width Copyright © Itech Electronic Co., Ltd.
  • Page 99 Test pulse width Peak voltage Clamping voltage Select the 24V volt- age system Test pulse width Peak voltage Clamping voltage Test–2B Transient from DC motors acting as generators after ignition switch OFF: Copyright © Itech Electronic Co., Ltd.
  • Page 100 Power Supply Function Parameters ≤0.05Ω ≤0.05Ω 0.2–2s 0.2–2s 1ms±50% 1ms±50% 1ms±50% 1ms±50% 1ms±50% 1ms±50% Test–4 Starter motor engagement disturbance pulse. Copyright © Itech Electronic Co., Ltd.
  • Page 101 The relevant pa- rameters are introduced as follows: Please pay attention to whether the voltage value defined in the LV123 standard matches the rated voltage of the instrument, otherwise some waveforms cannot be recalled. Copyright © Itech Electronic Co., Ltd.
  • Page 102 Range of lower limited operating ca- limited pability, includes the following options: • HV_1 • HV_2a • HV_2b • HV_3 highly- Range of highly limited operating ca- limited pability, includes the following options: • HV_1 • HV_2a • HV_2b Copyright © Itech Electronic Co., Ltd.
  • Page 103 V4: Voltage in interval 4 upper- Range of upper limited operating ca- limited pability, with the following settings: • V1: Voltage in interval 1 • V2: Voltage in interval 2 • V3: Voltage in interval 3 Copyright © Itech Electronic Co., Ltd.
  • Page 104 Set the number of test repetitions, ranging from 1 to 65535. The actual number of test executions = count * Save To Set the save address of the waveform File file, range: 1~10. Copyright © Itech Electronic Co., Ltd.
  • Page 105 520V 140V 255V 350V 635V 300S 300S 300S 300S 300S 300S 300S 300S 10mS 12mS 300S 300S 300S 300S Actual num- Count*3 Count*3 Count*3 Count*3 ber of tests Upper-limited The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 106 190V 340V 450V 750V 200V 360V 470V 770V 190V 340V 450V 750V 195V 350V 460V 760V 140V 255V 350V 635V Actual Count*3 Count*3 Count*3 Count*3 number of tests Lower-limited The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 107 140V 255V 350V 635V 170V 250V 520V 160V 200V 450V 170V 250V 520V 165V 225V 485V 140V 255V 350V 635V Actual Count*3 Count*3 Count*3 Count*3 number of tests Highly-limited The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 108 255V 350V 10mS Actual number Count*3 Count*3 Count*3 of tests How to Use The following is an example of how to use this function by recalling the LV123 standard regulation Unlimited and HV_1 waveform. Copyright © Itech Electronic Co., Ltd.
  • Page 109 LV124 waveform protocol E-02 Transient overvoltage test waveform E-04 Jump start test waveform E-05 Load dump test waveform E-07 Slow decrease and increase of the supply voltage test waveform Ubmax Start voltage Ubmin Holding voltage Copyright © Itech Electronic Co., Ltd.
  • Page 110 These overvoltages are simulated by means of this test. This test may be used for the electrical life test. The test pulse of E-02 Transient overvoltage is shown in the figure below: Copyright © Itech Electronic Co., Ltd.
  • Page 111 Dumping of an electric load, in combination with a battery with reduced buffering ability, results in an energy-rich overvoltage pulse due to the generator charac- teristics. The test pulse of E-05 Load Dump is shown in the figure below: Copyright © Itech Electronic Co., Ltd.
  • Page 112 The reset behavior is represented by a voltage variance and a time variance. Two different test sequences are required to simulate different switchoff times. A component must always undergo both sequences. Copyright © Itech Electronic Co., Ltd.
  • Page 113 In order to cover both cases, two different test sequences are required. A component must al- ways undergo both sequences. • Cold Start Test Pulse • Warm Start Test Pulse Copyright © Itech Electronic Co., Ltd.
  • Page 114 The related parameters of the built-in waveform of the instrument are introduced as follows: LV148 LV148 E-01 Long-term overvoltages The component's resistance to long-term overvoltage is tested. A generator control fault during driving operation is simulated. E-02 Transient overvoltages Copyright © Itech Electronic Co., Ltd.
  • Page 115 0V and the sudden reconnect the system volt- age by a charged or new energy storage battery. T1 Holding Holding time Time T1 Rising Rising time Time E-08 Reset behavior Copyright © Itech Electronic Co., Ltd.
  • Page 116 E-18 Overvoltage range The test is to show the load cut-off during storage charging and check the changes of the operating behavior into the overvoltage range. E-01 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 117 Power Supply Function E-02 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 118 Power Supply Function E-03 The waveform is as follows: E-04 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 119 Power Supply Function E-06A The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 120 Power Supply Function E-06B The waveform is as follows: E-07 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 121 Power Supply Function T1 and tr1 need to be manually set by the user. E-08 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 122 Power Supply Function E-10 The waveform is as follows: E-15 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 123 Power Supply Function E-16 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 124 Power Supply Function E-18 The waveform is as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 125 1. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en- ter the function menu. 2. Use the knob to select 3.Road-Vehicles = Off and press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 126: Battery Simulation Function

    Initial Value load voltage. • Voc: The open-circuit voltage of the battery. • CAP: Battery capacity. Open or select a user-defined battery Open emulation file. Set the file save Recall File address. Copyright © Itech Electronic Co., Ltd.
  • Page 127 Select the battery simulation curve file for Curve testing. Run the currently selected battery sim- ulation curve file. Set the initial state of charge (SOC) of the bat- Initial Value tery. 0~100% corre- sponds to the voltage Copyright © Itech Electronic Co., Ltd.
  • Page 128 • Edit battery simulation curve file 1. You can contact ITECH Technical Support to obtain a template for the battery simulation curve file (.csv format). 2. Use the Excel tool to open the template file, edit the relevant parameters, and save.
  • Page 129 7. Set the Initial Value and press [Enter]. The instrument will enter the battery simulation test mode and wait for the function to be triggered. 8. Turn on the [On/Off]. 9. Based on the selected trigger method, perform the trigger operation. Copyright © Itech Electronic Co., Ltd.
  • Page 130 Function menu item will be displayed, you can re-enter the Function menu for editing; if Reset is selected, it means to stop the present run- ning and return to the main interface to wait for the next trigger operation. Copyright © Itech Electronic Co., Ltd.

  • Page 131: Basic Operation

    This function can prevent the power supply from the panel keys misoperation during usage. Press the composite keys [Shift]+[2] (Lock) to lock front panel keys and the lock symbol “*” is shown on the front panel display. All panel keys, Copyright © Itech Electronic Co., Ltd.

  • Page 132: Save And Recall Operations

    Internal resistance of the power supply: Output Res Protect menu OCP/OVP/OPP/UCP/UVP switch status: On/Off OCP/OVP/OPP/UCP/UVP limit setting: Level OCP/OVP/OPP/UCP/UVP delay time: Delay UCP/UVP warm-up time: Warm-up 5.3.1 Save Operation The save operation procedures are as follows: Copyright © Itech Electronic Co., Ltd.

  • Page 133: Recall Operation

    Records current and voltage data during the data acquisition period. Configure the Function Menu 1. Press the composite button [Shift]+[1] (Log) on the front panel to enter the configuration menu of the data logging function. Copyright © Itech Electronic Co., Ltd.
  • Page 134 2. Set the value of Sample Period and press [Enter]. 3. Set the value of Duration and press [Enter]. 4. Set the value of Source and press [Enter]. 5. Set the value of Data Type and press [Enter]. Copyright © Itech Electronic Co., Ltd.
  • Page 135 When the DC terminals detect that the voltage reaches the trigger voltage setting value and is within the range of the upper and lower trigger limits, a data recording operation is triggered. – Level: Trigger threshold. – Up-Level: Trigger upper limit value. Copyright © Itech Electronic Co., Ltd.

  • Page 136: Set The Beeper Status (Beep)

    The first displayed menu item Beep is used to set the beeper status. 2. Press [Enter] key to enter the parameter setting interface. 3. Press the Left / Right key or turn the knob to adjust the value of this parameter. Copyright © Itech Electronic Co., Ltd.

  • Page 137: Set The Power-On State (Poweron)

    Table 5–1 Initial value of the parameter Parameter Initial Value Category Main Voltage setting: Vset 0.002V interface Current setting: Iset One percent of the rated current of the instrument Upper limit of voltage: Vlim Upper limit value: 0.002V Copyright © Itech Electronic Co., Ltd.

  • Page 138: Sense Function (Sense)

    This series power supply supports two connection methods: Local measure- ment and Remote sensing. The remote sensing is used for maximizing meas- urement accuracy. (Refer to 2.4 Connecting the Device Under Test (DUT)) The procedures to set the menu item are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 139: Select Trigger Source (Trig Source)

    – Level: Trigger threshold. – Up-Level: Trigger upper limit value. – Down-Level: Trigger lower limit value. • External: Indicates the trigger occurs via the pin 4 of the digital I/O interface (P-IO). Copyright © Itech Electronic Co., Ltd.

  • Page 140: Set The Communication Information (I/O Con)

    2. Turn the knob to select the I/O and press [Enter]. 3. Press the Left / Right key or turn the knob to adjust the value of this parameter. 4. After the parameter settings are complete, press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 141: Set Parallel Operation Mode (Parallel)

    In the parallel mode, you only need to operate the master. Synchro- nous operations on other slaves are implemented by operating the master. • Slave: Indicates that the instrument is set to the slave in parallel mode. Copyright © Itech Electronic Co., Ltd.
  • Page 142 2. Refer Figure 5–1 Wiring connection diagram to connect three units. Figure 5–1 Wiring connection diagram a. Connect the AC input terminals of the three units separately, and connect them to the AC distribution box. Copyright © Itech Electronic Co., Ltd.

  • Page 143: Digital I/O Function (Digital Port)

    This series power supply supports digital I/O function. The user can realize logic control over signal input or output by related configurations in the system menu. Pins Introduction Different I/O implements different functions. The detailed functions description are shown in the figure below: Copyright © Itech Electronic Co., Ltd.
  • Page 144 , the output signal is the level signal provided externally by , and the pulse signal is the edge signal switched between high and low levels. Typical: 5V Input signal High level signal Range: 1.6V-15V Current: ≤100mA Copyright © Itech Electronic Co., Ltd.
  • Page 145 Output→PWM, the user needs to set the frequency (PWM Freq) and duty cycle (PWM Duty) values. For example, if the PWM Freq is set to 100Hz and the PWM Duty is set to 10%, the output waveform is as follows: Copyright © Itech Electronic Co., Ltd.

  • Page 146: Io-1. Ps-Clear, Not-Invert

    Indicates whether to invert the input/output Invert pulse or level signal. • Invert: Yes Invert • Not-Invert: No This default function means that when Clear the instrument generates protection, the protection state can be cleared via this pin. Copyright © Itech Electronic Co., Ltd.
  • Page 147 Pulse input: When the instrument is under protection, the instrument will clear protection after receiving the pulse signal from external input. 1. Refer to the figure below to connect pin 1 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 148: Io-2. Ps, Not-Invert

    IO-2 pin can be set to 【Ps】, 【Input】, 【Output】. Parameter Description IO–2. Ps, Not- Parameter setting for pin 2. Invert Not- Indicates whether to invert the input/output Invert pulse or level signal. • Invert: Yes Invert Copyright © Itech Electronic Co., Ltd.
  • Page 149 2 outputs high level; when the instrument is under protection, pin 2 outputs low level. When pin 2 is set to Invert, the output level is completely opposite. 1. Refer to the figure below to connect pin 2 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 150: Io-3. Off-Status, Not-Invert

    This default function indicates the exist- Status ing [On/Off] state of the instrument. Input Pin 3 receives the level signal from the outside. Output Pin 3 sends the digital signal (1, 0, PWM) to the outside. Copyright © Itech Electronic Co., Ltd.
  • Page 151 1. Refer to the figure below to connect pin 3 to the external oscilloscope. 2. Confirm that pin 3 function is set to the default option, namely IO-3. Off-Status, Not-Invert. 3. Turn on [On/Off]. Copyright © Itech Electronic Co., Ltd.

  • Page 152: Io-4.Trig(In), Not-Invert

    Meter Triggers the run- ning of Meter function. This function needs to be triggered at the upper com- puter side through SCPI in- struction. For de- tails, refer to instructions Copyright © Itech Electronic Co., Ltd.
  • Page 153 Taking the triggering of List function as an example, the text below will introduce how to use pin 4’s default function Ext-Trig. • Trig–Out 1. Refer to the figure below to connect pin 4 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.
  • Page 154 5. Check the oscilloscope and confirm whether pin 4 has following pulse signal output. Level rise slope 10us Level fall slope Minimum time width 30us for low level keep • Trig-In 1. Refer to the figure below to connect pin 4 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 155: Io-5. Inh-Living, Not-Invert

    IO-5 pin can be set to 【Inhibit】, 【Input】, 【Output】. Parameter Description IO–5. Living, Parameter setting for pin 5. Not-Invert Not- Indicates whether to invert the input/output pulse or Invert level signal. • Invert: Yes Invert Copyright © Itech Electronic Co., Ltd.
  • Page 156 The [On/Off] button light is lighted on and VFD still displays On, but the actual output is 0; when pin 5 receives high level sig- nal again, the output state is recovered. Copyright © Itech Electronic Co., Ltd.
  • Page 157 The pa- rameter requirements of this pulse signal are as follows: Level rise slope 10us Level fall slope Minimum time width 30us for low level keep Copyright © Itech Electronic Co., Ltd.

  • Page 158: Io-6. Sync-On, Not-Invert

    In addition, the VFD screen on the front panel displays Inhibit-Ps. When the protection state is cleared, manually turn on [On/Off] again. 5.11.6 IO–6. Sync-On, Not-Invert IO-6 pin can be set to 【Sync-On】, 【Input】, 【Output】. Copyright © Itech Electronic Co., Ltd.
  • Page 159 When pin 6 is set to default Sync-On function, pin 6 has bi-directional I/O func- tion, which can receive pulse signal input from the external instrument and also can output pulse signal to external instrument. The parameter requirements of this pulse signal are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 160 4. Set the voltage to 10V on the front panel of instrument A, and turn on [On/Off]. At this time, check the oscilloscope. The instrument A’s pin 6 outputs pulse signal and the instrument B’s output function is synchronously turned on. Copyright © Itech Electronic Co., Ltd.

  • Page 161: Io-7. Sync-Off, Not-Invert

    When pin 7 is set to default Sync-Off function, pin 7 has bi-directional I/O func- tion, which can receive pulse signal input from the external instrument and also can output pulse signal to external instrument. The parameter requirements of this pulse signal are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 162 4. Press [On/Off] on the front panel of instrument A to turn off the output function. At this time, check the oscilloscope. The instrument A’s pin 7 outputs pulse signal and the instrument B’s output function is synchronously turned off. Copyright © Itech Electronic Co., Ltd.

  • Page 163: Analogue Function (Ext-Program) (Optional)

    The analog function interface is located on the optional IT-E177. The pins de- scription is as below. Pins Name Type Description 1, 2, 3 TXD, Commu- RS232 interface connection terminal. RXD, nication DGND terminal Ground Ground for analog inputs and outputs. Copyright © Itech Electronic Co., Ltd.
  • Page 164 Analog in The setting for the voltage/current lower limit corresponds to Ch3 in the menu. (IT-M3900D series models do not need to be set) Analog quantity menu description When the analog quantity function is optionally equipped, the system menu dis- plays the analog quantity menu.
  • Page 165 Indicates the offset of channel 2. Set the parameters of channel 3 (lower limit channel). For the IT-M3900D series of unipolar power supplies, the voltage/current lower limit does not need to be specified. There- fore, the Ch3 parameters here do not need to be set.
  • Page 166 CV priority • CC priority How to Use The following takes the CV priority mode as an example to introduce the usage steps. 1. Refer to the figure below to complete the pin connection. Copyright © Itech Electronic Co., Ltd.
  • Page 167 4. Adjust the output of DC Power Supply 1 from -5V to 5V, and adjust the out- put of DC Power Supply 2 from -10V to 10V. The actual output voltage and current of the instrument will change accord- ing to the following rules: Copyright © Itech Electronic Co., Ltd.

  • Page 168: View The System Information (System Info)

    Current Min Display the minimum current value. Power Max Display the maximum power value. Power Min Display the minimum power value. Resistance Max Display the maximum resistance value. Resistance Min Display the minimum resistance value. Copyright © Itech Electronic Co., Ltd.

  • Page 169: Restored To Factory Setting (System Reset)

    Upper limit of voltage: Vlim Upper limit value: 0.002V Upper limit of current: Ilim One percent of the rated current of the instrument Upper limit of power: Plim Rated power value of the instrument [On/Off] status Copyright © Itech Electronic Co., Ltd.
  • Page 170 • (Optional) RS232: 9600,8,N,1 • (Optional) External analog: Off • (Optional) GPIB: Ad- dress=1 • Digital Port IO–1: Ps-Clear • IO–2: Ps • IO–3: Off-Status • IO–4: Trig(In) • IO–5: INH-Living • IO–6: Sync-On Copyright © Itech Electronic Co., Ltd.

  • Page 171: System Upgrade

    Web browser on PC for upgrading operation. This Chapter introduces in detail how to upgrade the system with the USB inter- face on the front panel. For the upgrading method of Web, see 2.5.2.1 Using Server. Copyright © Itech Electronic Co., Ltd.
  • Page 172 For example, when there are multiple system upgrading package post- fixed with .itech in the root directory of your USB flash drive, you need to use a text editing tool to open the configuration file and specify the up- grade package name corresponding to the present upgrade operation.
  • Page 173 3. Select upgrade in whole or in part based on actual needs. Then, press [Enter]. – SN: ALL Indicates to upgrade all. – SN1: xxxxxxxxxxxxxxxxxx Copyright © Itech Electronic Co., Ltd.
  • Page 174 The system will automatically perform upgrading. If No is selected, it means to exit upgrading, and the system will di- rectly enter into the main interface. 5. After the upgrading is completed, you need to restart the instrument manually. Copyright © Itech Electronic Co., Ltd.

  • Page 175: Technical Specification

    Besides, we will introduce the working environment and storage temperature. ♦ Main Specification ♦ IT-M3901D-10-170 ♦ IT-M3903D-10-340 ♦ IT-M3905D-10-510 ♦ IT-M3910D-10-1020 ♦ IT-M3906D-80-120 ♦ IT-M3912D-80-240 ♦ IT-M3906D-300-60 ♦ Supplemental Characteristics 6.1 Main Specification Copyright © Itech Electronic Co., Ltd.

  • Page 176: M3901D-10-170

    Current Rise Time( no load ) Voltage ≤50ms Rise Time( full load ) Voltage ≤100ms Fall Time( no load ) Voltage ≤50ms Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤10ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 177 50Hz/60Hz Max. apparent 1.85kVA power Max. input current 12.5Aac1 Max. efficiency Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog/RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Copyright © Itech Electronic Co., Ltd.

  • Page 178: M3903D-10-340

    ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Setup Accuracy Power ≤0.5% + 0.5%FS Resistance in series （CV ≤1%FS priority） Voltage ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 179 External programming voltage 0 to 10V voltage program Corresponding voltage 0 to 10V Voltage 0 to 10V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: 3phase 110V～520V Voltage AC Input Single phase 85V～300V Frequency 50/60Hz Copyright © Itech Electronic Co., Ltd.

  • Page 180: M3905D-10-510

    Voltage 0～10V Current 0A～510A Rated value Power 0W～5100W Resistance in series （CV 0～0.02Ω priority） Voltage 0.001V Current 0.1A Setup Resolution Power Resistance in series （CV 0.001Ω priority） Voltage 0.001V Read Back Resolution Current 0.1A Copyright © Itech Electronic Co., Ltd.
  • Page 181 Load Regulation Current ≤0.05% + 0.05%FS 520A Output protection 10.5V Overpower protection 5202W Remote Sense Compensation ≤2V Voltage External analog External programming voltage 0V to 10V current program （optional） corresponds to current 0A to 510A Copyright © Itech Electronic Co., Ltd.
  • Page 182 Standard Interface Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 300Vdc Isolation AC to GND 3500Vdc Cooling Dimension ( mm) 660mm*437mm*43.5mm Weight( net) 15kg Copyright © Itech Electronic Co., Ltd.

  • Page 183: M3910D-10-1020

    Current Rise Time( no load ) Voltage ≤50ms Rise Time( full load ) Voltage ≤100ms Fall Time( no load ) Voltage ≤50ms Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤10ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 184 50/60Hz Max. apparent 11.0kVA power Max. input current 25Aac Max. efficiency Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog/RS232 Command Re- 0.1ms sponse Time Parallel Number ≤8 Copyright © Itech Electronic Co., Ltd.

  • Page 185: M3906D-80-120

    ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Setup Accuracy Power ≤0.5% + 0.5%FS Resistance in series ≤1%FS （CV priority） Voltage ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 186 External analog （optional） External programming voltage 0 to 80V Corre- voltage program sponding voltage 0 to 10V Voltage 0 to 80V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: Copyright © Itech Electronic Co., Ltd.

  • Page 187: M3912D-80-240

    Isolation AC to GND 3500Vdc Cooling Dimension ( mm) 660mm*437mm*43.5mm Weight( net) 15kg 6.1.6 IT-M3912D-80-240 Parameter IT-M3912D-80-240 Voltage 0～80V Current 0A～240A Rated value Power 0W～12000W Resistance in series 0～0.3Ω （CV priority） Setup Resolution Voltage 0.001V Copyright © Itech Electronic Co., Ltd.
  • Page 188 Time Voltage ≤1ms change from 20% to 90% of rated current Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.05% + 0.05%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS 250A Output protection Copyright © Itech Electronic Co., Ltd.
  • Page 189 Current harmonics ≤3% Standard: USB/LAN/CAN/IO Optional: GPIB/Analog/RS232 Standard Interface Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 300Vdc Isolation AC to GND 3500Vdc Copyright © Itech Electronic Co., Ltd.

  • Page 190: M3906D-300-60

    ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Vp-p ≤300mVpp Voltage ripple Vrms ≤100mV Voltage ≤50ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤50ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Copyright © Itech Electronic Co., Ltd.
  • Page 191 Voltage 0 to 300V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: 3phase 110V～520V Voltage AC Input Single phase 85V～300V Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency 94.5% Copyright © Itech Electronic Co., Ltd.
  • Page 192 Isolation DC to GND 600Vdc Isolation AC to GND 3500Vdc Cooling Dimension ( mm) 660mm*437mm*43.5mm Weight( net) 15kg * At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 193: Supplemental Characteristics

    Technical Specification 6.8 Supplemental Characteristics State storage capacity: 10 sets Recommended calibration frequency: once a year Cooling style: fans Copyright © Itech Electronic Co., Ltd.

  • Page 194: Routine Maintenance

    During self-test, errors may be induced by signals present on ex- ternal wiring, such as long test leads that can act as antennae. 7.2 Cleaning and Maintenance To ensure the safety function and performance of the instrument, please clean and maintain the instrument properly. Copyright © Itech Electronic Co., Ltd.

  • Page 195: Contact Of Itech Engineers

    If there are still some problems, carefully read the Warranty and Limitation of Warranty in the preface of the manual. Confirm that your instrument complies with warranty service conditions. If after your warranty expires, ITECH offers re- pair services at competitive prices.

  • Page 196: Return For Repair

    4006-025-000 for technical support and services. 7.4 Return for Repair If your instrument fails during the warranty period, ITECH will repair or replace it under the terms of your warranty. After your warranty expires, ITECH offers re- pair services at competitive prices. Also you can purchase an extended mainte- nance service contract that exceeds the standard warranty period.
  • Page 197 ITECH recommends that you retain the original shipping carton for return ship- ments and always insure shipments. To ship the unit to ITECH for service or repair: 1. Download the ITECH maintenance service application from our website, complete it and place it in the box with the instrument.

  • Page 198: A Appendix

    ♦ Fuse Replacement A.1 Specifications of Red and Black Test Cables ITECH provides you with optional red and black test cables, which are sold indi- vidually and you can select for test. For specifications of ITECH test cables and maximum current values, refer to the table below.

  • Page 199: Troubleshooting

    Larger diameter wire sizes will help minimize wire voltage drops. Twisting or bundling wires will help reduce transient voltage drops. A.2 Troubleshooting The fault information of this series of instruments is described below. Copyright © Itech Electronic Co., Ltd.
  • Page 200 Master, and the oth- er units are Slave. FIBER EXT UNLOCK The outer ring of the fiber is Fiber multi-master not locked. parallel: set the par- allel in the System menu in turn. For details, see 5.10 Copyright © Itech Electronic Co., Ltd.

  • Page 201: Fuse Replacement

    If there are no fuse assembly on the instrument rear panel, it means that you can’t replace the fuse by yourself. Please contact the ITECH engineer on the condition of the same malfunction.
  • Page 202 2. Have a visual inspection of the fuse to see whether it is burnt out; if yes, replace it with another fuse of the same specification. Re- fer to the corresponding technical specifi- cations for fuse rating. Copyright © Itech Electronic Co., Ltd.
  • Page 203 3. Please replace with a fuse of the same specification. Refer to the technical specifi- cation of the corresponding instrument. 4. When install, put into the fuse box firstly. Then Push and turn the fuse box to 90 de- grees clockwise. Copyright © Itech Electronic Co., Ltd.
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It-m3901d-10-170It-m3903d-10-340It-m3905d-10-510 it-m3910d-10-1020It-m3902d-32-80It-m3904d-32-160It-m3906d-32-240 ... Show all

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