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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: V2.1/5,2023

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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: V2.1/5,2023...
  • 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)............53 4.5.6 Over-Temperature Protection (OTP)............54 4.5.7 Sense Reverse Protection................55 4.6 Function Menu for Power Supply................55 4.6.1 LIST Function ....................55 4.6.2 Battery Charging Test Function..............62 5 Basic Operation........................ 65 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 6.1.25 IT-M3906D-1500-12 ..................170 6.1.26 IT-M3912D-1500-24 ..................173 6.27 Supplemental Characteristics................176 7 Routine Maintenance ..................... 177 7.1 Instrument Self-Test..................... 177 7.2 Cleaning and Maintenance .................. 177 7.3 Contact of ITECH Engineers ................178 Copyright © Itech Electronic Co., Ltd.
  • Page 12 IT-M3900D Series User Manual 7.4 Return for Repair....................179 A Appendix ........................181 A.1 Specifications of Red and Black Test Cables ............. 181 A.2 Troubleshooting....................182 A.3 Fuse Replacement ....................184 Copyright © Itech Electronic Co., Ltd.

  • Page 13: 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 14 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 15: Front-Panel Overview

    The above model is permanently connected, Equipment Class I, Pollution De- gree 2, Installation Category II. • Mode of operation: Continuous. 1.2 Front-Panel Overview The front panel of this series of instruments is shown in the figure below. Copyright © Itech Electronic Co., Ltd.

  • Page 16: Keyboard Introduction

    6 Up, down, left, and right cursor navigation tion port keys and 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. Copyright © Itech Electronic Co., Ltd.
  • Page 17 “Vset=0.00V” (Setting value of voltage). In CC priority mode, press [V-set], the interface displays “Vlim= 0.00V” (Upper limit of voltage), the lower limit of the volt- age is 0. [I-set] Set the output current value Copyright © Itech Electronic Co., Ltd.
  • Page 18 The [Shift]+[XXX](YYY) combination key form identified in this document re- fers to pressing [Shift] button first, then press the [XXX] button, please pay attention to the sequence. Keys Description [Shift]+[Protect] Short circuit function key (Short) [Shift]+[On/Off] Generate a local trigger signal. (Trigger) Copyright © Itech Electronic Co., Ltd.

  • Page 19: Push-On Knob

    Select Menu Item The knob can also be used to view menu items. In the menu item display inter- face, turning the knob clockwise indicates that the next menu item is selected, Copyright © Itech Electronic Co., Ltd.

  • Page 20: Rear Panel Introduction

    8. Communication interface of outer ring optical fiber (TX and RX) This interface is used for the parallel connection between the units for the communication of units in parallel. 9. AC power input terminals (L1, L2, L3, and PE) Copyright © Itech Electronic Co., Ltd.

  • Page 21: Vfd Indicator Lamps Description

    1.7 Configuration Menu Function This section gives an overview of the configuration menu of the this series instrument. The procedures to operate the configuration menu are as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 22 Displays the voltage or current fall time setting according to the selected priority V-Fall Time/I-Fall Time = mode. If CC priority mode is selected, 0.001s the parameter setting of I-Fall Time will be displayed here. Copyright © Itech Electronic Co., Ltd.

  • Page 23: System Menu Function

    You can press [Esc] to return to the previous menu. The description of the menu items is shown in the table below. Beep Set the beeper state. Turn the beeper on. Turn the beeper off. Set the power-on state. PowerOn Copyright © Itech Electronic Co., Ltd.
  • Page 24 Virtual LAN communication. After selecting this option, you also need to set the commu- nication parameters of the LAN, and the menu items are the same as those in the LAN menu (see below). Copyright © Itech Electronic Co., Ltd.
  • Page 25 If it is not in- volved, there is no need to set it. • Socket Port: 30000 Set the port number. Select whether to reset the LAN to the de- fault settings or not. Restore • • Copyright © Itech Electronic Co., Ltd.
  • Page 26 IO-1. Ps-Clear, Not- Function setting of pin 1 Invert Function setting of pin 2 IO-2. Ps, Not-Invert IO-3. Off-Status, Not- Function setting of pin 3 Invert IO-4. Ext-Trig, Not- Function setting of pin 4 Invert Copyright © Itech Electronic Co., Ltd.

  • Page 27: 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 28 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 29 Cabinet installation This series instruments can be mounted on a standard 19-inch cabinet. ITECH has prepared a special bracket for the user as a mounting kit. – IT-E155A+IT-E155C: Select this mounting kit when mounting a 1U in- strument to an ITECH cabinet. Please refer to 《IT-E155 User Manual 》...

  • Page 30: Inspection And Installation

    Upon verification of the shipment, keep the package and relevant contents thereof in a safe place. When returning the instrument for warranty service or repair, the specified packing requirements shall be met. Copyright © Itech Electronic Co., Ltd.

  • Page 31: 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): 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 L1, L2 and L3 terminals of power input on the rear panel of the instrument. Copyright © Itech Electronic Co., Ltd.
  • Page 34 When the 1U and 2U models are connected to three-phase power, the wir- ing diagram is shown below. • When the 1U model is connected to single-phase power (L/N), the wiring di- agram is shown below. Copyright © Itech Electronic Co., Ltd.

  • Page 35: Connecting The Device Under Test (Dut)

    6. Refer to the suggestion connection diagram, connect the other end of the power cable to the required AC distribution box. 2.4 Connecting the Device Under Test (DUT) This section describes how to connect the test cables between the instrument and DUT. Copyright © Itech Electronic Co., Ltd.
  • Page 36 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 37 The connection diagram and steps of remote measurement are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 38 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 39: 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 40: 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 41 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 42 Web Control: Enables the Web control to begin controlling the instrument. This page allows you to monitor and control the instrument; • Manual: Go to the ITECH official website and view or download the relevant documents. • Upload: Performs a system upgrade.

  • Page 43: 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 44 The interface cable is correctly connected (CAN_H to CAN_H, CAN_L to CAN_L). • If the communication signal is poor or unstable, it is recommended to con- nect a 120 Ω terminating resistance. – The connection diagram of a single device is as below. Copyright © Itech Electronic Co., Ltd.

  • Page 45: Gpib Interface (Optional)

    3. Connect the instrument with the computer via the GPIB cable. After the con- nection is successful, turn on the power switch of the instrument. 4. Press the composite keys [Shift]+[P-set] (System) on the front panel to en- ter the system menu. Copyright © Itech Electronic Co., Ltd.

  • Page 46: Interface (Optional)

    When you purchase the interface accessory and successfully insert it into the corresponding position on the rear panel of the instrument, the RS–232 menu item will appear in the System menu. The specific steps are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 47 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 48: 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 49 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 50 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 51 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 52: 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 53: 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 54: 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 55: 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 56 The following figure shows the CC priority oper- ating locus of the output. Copyright © Itech Electronic Co., Ltd.
  • Page 57 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 58: Set The Internal Resistance

    4.5 Protection Function for Power Supply This series instrument provides the general protection functions such as over- voltage, overcurrent, overpower, undercurrent and undervoltage protection. The corresponding protection parameters can be configured in the Protect menu. In Copyright © Itech Electronic Co., Ltd.
  • Page 59 Turn the UCP function on. Indicates the instrument warm-up time. This time is set to prevent the in- strument from triggering Warm-up protection when the cur- rent is rising. Because this transient condition should not be Copyright © Itech Electronic Co., Ltd.
  • Page 60 Specifying an protection delay (Delay) can ignore these momentary changes during the specified delay period. Once the delay time has expired and the protection limit condition persists, the output will shut down. Copyright © Itech Electronic Co., Ltd.
  • Page 61 After the protection is cleared, you need to press the [On/Off] key on the front panel or send the OUTPut ON command to the instrument to reopen [On/Off]. Copyright © Itech Electronic Co., Ltd.

  • Page 62: Set Over-Voltage Protection (Ovp)

    5. Set the protection limit Level and the delay time Delay in sequence, and press [Enter] to confirm. The VFD screen returns to the Protect menu and the OVP setting (take 150V, 1S as an example) is displayed as follows: PROTECT 1.OVP 150V, 1S Copyright © Itech Electronic Co., Ltd.

  • Page 63: Set Over-Current Protection (Ocp)

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

  • Page 64: Set Under-Current Protection (Ucp)

    The set protection limit Level is greater than the current Meter value. • The external (AC input) inputs a lower current. • The power supply outputs a low current due to a fault. How to Set The operation steps to set UCP are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 65: Set Under-Voltage Protection (Uvp)

    (2U Model) 3. Rotate the knob to select 5. UVP (Off) and press [Enter]. 4. Press the left/right key or rotate the knob to select On and press [Enter] to enter the setting interface. Copyright © Itech Electronic Co., Ltd.

  • Page 66: 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 67: Sense Reverse Protection

    This series power supply supports a total of 10 List files (List01 to List10), each of which can be set up to 200 steps. You need to edit the voltage/current value, slope and time width of each step, or you can set repeat times (0 to 999999) for Copyright © Itech Electronic Co., Ltd.
  • Page 68 Step 1 Slope value setting for Step1. Slope Step 1 Dwell time setting for Step1. The range is from Width 0.001 to 21000 in seconds. Repeat Set the number of list file repetitions. Copyright © Itech Electronic Co., Ltd.
  • Page 69 1. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en- ter the function menu. 2. Select 1. LIST: Off and press [Enter]. 3. Rotate the knob to select Edit and press [Enter] to enter the editing interface. Copyright © Itech Electronic Co., Ltd.
  • Page 70 XXX.csv Not-Load Load YY/ZZ XXX indicates the name of the List file; YY indicates the serial number of the current List file; ZZ indicates the total number of the List file. Copyright © Itech Electronic Co., Ltd.
  • Page 71 4. Press the Left/Right key to select Open and press [Enter]. 5. Press the Left/Right key to select Internal and press [Enter]. 6. Set the name of the List file to be recalled (that is, the file name set in Edit), and press [Enter]. Copyright © Itech Electronic Co., Ltd.
  • Page 72 8. Based on the selected trigger method, perform the trigger operation. Take the manual trigger as an example. Press [Shift]+[On/Off](Trigger) on the front panel to run the selected List file. For details about the List trigger method, see 5.8 Select Trigger Source (Trig Source). Copyright © Itech Electronic Co., Ltd.
  • Page 73 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 74: 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 75 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 76 Function menu item will be displayed, you can re-enter the Function menu for editing; if Reset is selected, it means that it will not stop run- ning, it will return to the main interface, and run Battery again. Copyright © Itech Electronic Co., Ltd.

  • Page 77: 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 78: 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 79: 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 80 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 81 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 82: 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 83: Set The Power-On State (Poweron)

    Initial Value Category Voltage setting: Vset 0.002V(10V models) Main 0.2V(Other models) interface Current setting: Iset One percent of the rated current of the instrument Upper limit of voltage: Vlim Upper limit value: 0.002V(10V models) Copyright © Itech Electronic Co., Ltd.

  • Page 84: 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)) Copyright © Itech Electronic Co., Ltd.

  • Page 85: Select Trigger Source (Trig Source)

    – Level: Trigger threshold. – Up-Level: Trigger upper limit value. – Down-Level: Trigger lower limit value. Copyright © Itech Electronic Co., Ltd.

  • Page 86: 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 87: Set Parallel Operation Mode (Parallel)

    Total pa- rameter. For example, setting Total = 3 means that the total number of units in the parallel relationship is 3. Copyright © Itech Electronic Co., Ltd.
  • Page 88 (1 Master and 2 Slave) in parallel as an example. 1. Ensure that the power switches of the three units and the main switch of the AC power distribution box are off. 2. Refer Figure 5–1 Wiring connection diagram to connect three units. Copyright © Itech Electronic Co., Ltd.
  • Page 89 2. Power off the three instruments and turn off the main switch of the AC distri- bution box. 3. Remove the cables connection of the fiber optical and DC output terminals between three units. Copyright © Itech Electronic Co., Ltd.

  • Page 90: Digital I/O Function (Digital Port)

    Input/Output Sync-On, synchronous on Pulse signal control. Input/Output Sync-Off, synchronous off Pulse signal control. Ground terminal, that is, the negative terminal Level signal corresponding to each of the above 7 pins. Copyright © Itech Electronic Co., Ltd.
  • Page 91 (False) or low level (True) can be Output. – When pins 1 to 7 are configured to Input function, an external signal can be Input to this pin, and the instrument can detect the state of the exter- nal signal. Copyright © Itech Electronic Co., Ltd.

  • Page 92: Io-1. Ps-Clear, Not-Invert

    IO-1 pin can be set to 【Ps-Clear】, 【Input】, 【Output】. Parameter Description IO–1. Ps-Clear, Parameter setting for pin 1. Not-Invert Not- Indicates whether to invert the input/output Invert pulse or level signal. • Invert: Yes Invert • Not-Invert: No Copyright © Itech Electronic Co., Ltd.
  • Page 93 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 94: 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 95 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 96: 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 97 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 98: 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 99 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 100 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 101: 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 102 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 103 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 104: 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 105 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 106 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 107: 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 108 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 109: 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 110 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 111 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 112 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 113 4. Adjust the output of DC Power Supply 1 from 0V to 5V, and adjust the out- put of DC Power Supply 2 from 0V 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 114: 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 115: Restored To Factory Setting (System Reset)

    Upper limit value: 0.002V(10V models) Upper limit value: 0.2V (Other models) 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 Copyright © Itech Electronic Co., Ltd.
  • Page 116 Output Res 1000 On Delay/Off Delay Protect OVP/OCP/OPP/UCP/UVP Sta- menu tus switch OVP/OCP/OPP Protection point: Rated voltage / current / Level power value of the instrument UCP/UVP Protection point: Level OVP/OCP/OPP/UCP/UVP Delay time: Delay Copyright © Itech Electronic Co., Ltd.

  • Page 117: System Upgrade

    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 118 Info)) for selective upgrading based on the SN number in subse- quent upgrades. 3. If the upgrade fails, the interface will prompt Update fail. At this point, you cannot use the instrument. Please contact ITECH technical staff for treatment. Upgrade Operation •...
  • Page 119 Right again to deselect the instrument. 4. Select Yes, and press [Enter]. 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. Copyright © Itech Electronic Co., Ltd.
  • Page 120 Basic Operation 5. After the upgrading is completed, you need to restart the instrument manually. Copyright © Itech Electronic Co., Ltd.

  • Page 121: Technical Specification

    ♦ IT-M3902D-300-20 ♦ IT-M3904D-300-40 ♦ IT-M3906D-300-60 ♦ IT-M3912D-300-120 ♦ IT-M3902D-500-12 ♦ IT-M3904D-500-24 ♦ IT-M3906D-500-36 ♦ IT-M3912D-500-72 ♦ IT-M3902D-800-8 ♦ IT-M3904D-800-16 ♦ IT-M3906D-800-24 ♦ IT-M3912D-800-48 ♦ IT-M3906D-1500-12 ♦ IT-M3912D-1500-24 ♦ Supplemental Characteristics 6.1 Main Specification Copyright © Itech Electronic Co., Ltd.

  • Page 122: M3901D-10-170

    Current Rise Time( no load ) Voltage ≤50ms Rise Time( full load ) Voltage ≤100ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤10ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 123 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 124: M3903D-10-340

    0.001V Current 0.1A Setup Resolution Power Resistance in series （CV 0.001Ω priority） Voltage 0.001V Read Back Current 0.1A Resolution Power Voltage ≤0.03% + 0.03%FS Setup Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 125 0V to 10V External analog （optional） 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 Copyright © Itech Electronic Co., Ltd.
  • Page 126 Isolation AC to GND 3500Vdc Cooling Dimension 744.22mm*459mm*56.81mm （D*W*H） Weight( net) 12.5kg *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 127: M3905D-10-510

    ≤30ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rise Time( no load Voltage ≤50ms Rise Time( full load Voltage ≤100ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Copyright © Itech Electronic Co., Ltd.
  • Page 128 Single phase 100V～240V Frequency 50/60Hz Max. apparent 5.55kVA power Max. input current 12.5Aac 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 Copyright © Itech Electronic Co., Ltd.

  • Page 129: M3910D-10-1020

    0.001V Current 0.1A Setup Resolution Power Resistance in series 0.001Ω （CV priority） Voltage 0.001V Read Back Current 0.1A Resolution Power Voltage ≤0.03% + 0.03%FS Setup Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 130 0V to 10V External analog （optional） External programming voltage 0 to 10V Corre- voltage program sponding voltage 0 to 10V Voltage 0 to 10V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.

  • Page 131: M3902D-32-80

    Isolation AC to GND 3500Vdc Cooling Dimension 767.62mm*483mm*106.9mm （D*W*H） Weight( net) 30kg *1: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.5 IT-M3902D-32-80 Parameter IT-M3902D-32-80 Voltage Rated value 0～32V Copyright © Itech Electronic Co., Ltd.
  • Page 132 ≤60ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Time (change from 20% Voltage ≤1ms to 90% of rated current) Line Regulation Voltage ≤0.02% + 0.02%FS Copyright © Itech Electronic Co., Ltd.
  • Page 133 2.25kVA power Max. input current 12.5Aac 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 Working 0～40℃ Temperature Copyright © Itech Electronic Co., Ltd.

  • Page 134: M3904D-32-160

    Resistance in series 0.001Ω （CV priority） Voltage 0.001V Read Back Current 0.01A Resolution Power Voltage ≤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） Copyright © Itech Electronic Co., Ltd.
  • Page 135 0A to 160A Current 0A to 160A corresponds to external moni- External analog current monitor toring voltage 0V to 10V （optional） External programming voltage 0 to 32V Corre- voltage program sponding voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 136 Isolation AC to GND 3500Vdc Cooling Dimension 744.22mm*459mm*56.81mm （D*W*H） Weight( net) 12.5kg *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 137: M3906D-32-240

    Current Rise Time( no load ) Voltage ≤30ms Rise Time( full load ) Voltage ≤60ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤1ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 138 AC Input Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Optional: GPIB/Analog&RS232 Standard Interface Command Re- 0.1ms sponse Time Copyright © Itech Electronic Co., Ltd.

  • Page 139: M3912D-32-480

    Current 0.01A Setup Resolution Power Resistance in ser- 0.001Ω ies （CV priority） Voltage 0.001V Read Back Current 0.01A Resolution Power Voltage ≤0.03% + 0.03%FS Setup Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 140 0A to 480A External analog Current 0A to 480A corresponds to external moni- current monitor （optional） toring voltage 0V to 10V External programming voltage 0 to 32V Corre- voltage program sponding voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 141 IP20 Isolation DC to GND 300Vdc Isolation AC to GND 3500Vdc Cooling Dimension 767.62mm*483mm*106.9mm （D*W*H） Weight( net) 30kg *1: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 142: M3902D-80-40

    Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rise Time( no load ) Voltage ≤15ms Rise Time( full load Voltage ≤30ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Copyright © Itech Electronic Co., Ltd.
  • Page 143 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 2.25kVA power Max. input current 12.5Aac Max. efficiency Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard Interface Standard: USB/LAN/CAN/IO Copyright © Itech Electronic Co., Ltd.

  • Page 144: M3904D-80-80

    0～80V Current 0～80A Rated value Power 0～4000W Resistance in series 0～0.3Ω （CV priority） Voltage 0.001V Current 0.01A Setup Resolution Power Resistance in series 0.001Ω （CV priority） Voltage 0.001V Read Back Current 0.01A Resolution Power Copyright © Itech Electronic Co., Ltd.
  • Page 145 Load Regulation Current ≤0.05% + 0.05%FS Output protection Overpower 4080W protection Remote Sense Compensation ≤2V Voltage External analog External programming voltage 0V to 10V corre- current program （optional） sponds to current 0A to 80A Copyright © Itech Electronic Co., Ltd.
  • Page 146 Optional: GPIB/Analog&RS232 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 744.22mm*459mm*56.81mm （D*W*H） Weight( net) 12.5kg Copyright © Itech Electronic Co., Ltd.

  • Page 147: M3906D-80-120

    Accuracy Power ≤0.5% + 0.5%FS Vp-p ≤200mVpp Voltage ripple Vrms ≤80mV Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤30ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rise Time( no load ) Voltage ≤15ms Copyright © Itech Electronic Co., Ltd.
  • Page 148 Voltage 0 to 80V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range Single phase 100V～240V AC Input Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency Copyright © Itech Electronic Co., Ltd.

  • Page 149: M3912D-80-240

    ITECH. 6.1.12 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） Voltage 0.001V Current 0.01A Setup Resolution Power Resistance in series 0.001Ω （CV priority） Copyright © Itech Electronic Co., Ltd.
  • Page 150 (change from 20% Voltage ≤1ms to 90% of rated current) Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS 250A Output protection Overpower 12240W protection Copyright © Itech Electronic Co., Ltd.
  • Page 151 Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 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 Copyright © Itech Electronic Co., Ltd.

  • Page 152: M3902D-300-20

    Resistance in ser- ≤1%FS ies （CV priority） Voltage ≤0.03% + 0.03%FS Read Back Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Vp-p ≤900mVpp Voltage ripple Vrms ≤120mV Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Copyright © Itech Electronic Co., Ltd.
  • Page 153 Voltage 0 to 300V corresponds to external moni- voltage monitor toring voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent power 2.25kVA Max. input current 12.5Aac Copyright © Itech Electronic Co., Ltd.

  • Page 154: M3904D-300-40

    *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.14 IT-M3904D-300-40 Parameter IT-M3904D-300-40 Voltage 0～300V Current 0A～40A Rated value Power 0W～4000W Resistance in ser- 0～1Ω ies （CV priority） Voltage 0.01V Setup Resolution Current 0.001A Power Copyright © Itech Electronic Co., Ltd.
  • Page 155 (change from 20% to ≤1ms 90% of rated current) Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS 303V Output protection Overpower 4080W protection Copyright © Itech Electronic Co., Ltd.
  • Page 156 Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Response 0.1ms Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 600Vdc Isolation AC to GND 3500Vdc Cooling Copyright © Itech Electronic Co., Ltd.

  • Page 157: M3906D-300-60

    ≤0.5% + 0.5%FS Resistance in ser- ≤1%FS ies （CV priority） Voltage ≤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 Setup Temperature Voltage ≤30ppm/℃ Coefficient Copyright © Itech Electronic Co., Ltd.
  • Page 158 0 to 10V Voltage 0 to 300V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Copyright © Itech Electronic Co., Ltd.

  • Page 159: M3912D-300-120

    *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.16 IT-M3912D-300-120 Parameter IT-M3912D-300-120 Voltage 0～300V Current 0A～120A Rated value Power 0W～12000W Resistance in ser- 0～1Ω ies （CV priority） Copyright © Itech Electronic Co., Ltd.
  • Page 160 ≤100ms Transient Response Time (change from 20% to Voltage ≤1ms 90% of rated current) Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 161 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 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 600Vdc Copyright © Itech Electronic Co., Ltd.

  • Page 162: M3902D-500-12

    ≤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 Vp-p ≤1500mVpp Voltage ripple Vrms ≤180mV Copyright © Itech Electronic Co., Ltd.
  • Page 163 0 to 10V Voltage 0 to 500V corresponds to external moni- voltage monitor toring voltage 0 to 10V Other parameters: 3phase 200V～480V AC Input Grid voltage range Single phase 100V～240V Copyright © Itech Electronic Co., Ltd.

  • Page 164: M3904D-500-24

    *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.18 IT-M3904D-500-24 Parameter IT-M3904D-500-24 Voltage 0～500V Current 0A～24A Rated value Power 0W～4000W Resistance in ser- 0～1Ω ies （CV priority） Copyright © Itech Electronic Co., Ltd.
  • Page 165 ≤100ms Transient Response Time (change from 25% Voltage ≤1ms to 90% of rated current) Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 166 12.5Aac Max. efficiency 94.5% 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 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Copyright © Itech Electronic Co., Ltd.

  • Page 167: M3906D-500-36

    ≤0.1% + 0.1%FS Setup Accuracy Power ≤0.5% + 0.5%FS Resistance in ser- ≤1%FS ies （CV priority） Voltage ≤0.03% + 0.03%FS Read Back Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Voltage ripple Vp-p ≤500mVpp Copyright © Itech Electronic Co., Ltd.
  • Page 168 0 to 10V Voltage 0 to 500V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: 3phase 200V～480V AC Input Grid voltage range Single phase 100V～240V Copyright © Itech Electronic Co., Ltd.

  • Page 169: M3912D-500-72

    *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.20 IT-M3912D-500-72 Parameter IT-M3912D-500-72 Voltage 0～500V Rated value Current 0A～72A Power 0W～12000W Copyright © Itech Electronic Co., Ltd.
  • Page 170 Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Time Voltage (change from 20% to ≤1ms 90% of rated current) Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Copyright © Itech Electronic Co., Ltd.
  • Page 171 Max. input current 25Aac Max. efficiency 94.5% 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 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature Copyright © Itech Electronic Co., Ltd.

  • Page 172: M3902D-800-8

    ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Setup Accuracy Power ≤0.5% + 0.5%FS Resistance in ser- ≤1%FS ies （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 173 External analog （optional） External programming voltage 0 to 800V Corre- voltage program sponding voltage 0 to 10V Voltage 0 to 800V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Other parameters: Copyright © Itech Electronic Co., Ltd.

  • Page 174: M3904D-800-16

    *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. 6.1.22 IT-M3904D-800-16 Parameter IT-M3904D-800-16 Voltage 0～800V Rated value Current 0A～16A Copyright © Itech Electronic Co., Ltd.
  • Page 175 ≤60ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Time (change from 25% Voltage ≤1ms to 90% of rated current) Line Regulation Voltage ≤0.01% + 0.01%FS Copyright © Itech Electronic Co., Ltd.
  • Page 176 Max. input current 12.5Aac Max. efficiency 94.5% 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 Working 0～40℃ Temperature Copyright © Itech Electronic Co., Ltd.

  • Page 177: M3906D-800-24

    Resistance in ser- 0.01Ω ies （CV priority） Voltage 0.01V Read Back Current 0.001A Resolution Power Voltage ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Setup Accuracy Power ≤0.5% + 0.5%FS Resistance in ser- ≤1%FS ies （CV priority） Copyright © Itech Electronic Co., Ltd.
  • Page 178 0V to 10V External analog （optional） External programming voltage 0 to 800V Corre- voltage program sponding voltage 0 to 10V Voltage 0 to 800V corresponds to external monitor- voltage monitor ing voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 179 Isolation AC to GND 3500Vdc Cooling Dimension 744.22mm*459mm*56.81mm （D*W*H） Weight( net) 15kg *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 180: M3912D-800-48

    Current Rise Time( no load ) Voltage ≤30ms Rise Time( full load ) Voltage ≤60ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤1ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 181 AC Input Frequency 50/60Hz Max. apparent 13kVA power Max. input current 25Aac Max. efficiency 94.5% 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 Copyright © Itech Electronic Co., Ltd.

  • Page 182: M3906D-1500-12

    0.01V Current 0.001A Setup Resolution Power Resistance in series 0.01Ω （CV priority） Voltage 0.01V Read Back Current 0.001A Resolution Power Voltage ≤0.03% + 0.03%FS Setup Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 183 0A to 12A External analog Current 0A to 12A corresponds to external moni- current monitor （optional） toring voltage 0V to 10V External programming voltage 0 to 500V Corre- voltage program sponding voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 184 Isolation AC to GND 3500Vdc Cooling Dimension 744.22mm*459mm*56.81mm （D*W*H） Weight( net) 15kg *1: The ripple is got under three-phase AC input. *2: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 185: M3912D-1500-24

    Current Rise Time( no load ) Voltage ≤30ms Rise Time( full load ) Voltage ≤60ms Fall Time( no load ) Voltage ≤1s Fall Time( full load ) Voltage ≤100ms Transient Response Voltage ≤1ms Time Copyright © Itech Electronic Co., Ltd.
  • Page 186 50/60Hz Max. apparent power 13kVA Max. input current 25Aac Max. efficiency 94.5% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Response Time 0.1ms Parallel Number ≤16 Copyright © Itech Electronic Co., Ltd.
  • Page 187 Isolation DC to GND 1800Vdc Isolation AC to GND 3500Vdc Cooling Dimension ( mm) 660mm*437mm*87mm Weight( net) 30kg *1: At low voltage input, the set power will decrease. For more information, please contact ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 188: Supplemental Characteristics

    Technical Specification 6.27 Supplemental Characteristics State storage capacity: 10 sets Recommended calibration frequency: once a year Cooling style: fans Copyright © Itech Electronic Co., Ltd.

  • Page 189: 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 190: 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 191: 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 192 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 193: 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 194: 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 195 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 196: 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 197 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 198 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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