GW Instek PSU Series User Manual
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GW Instek PSU Series User Manual

Programmable dc power supply
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Programmable DC Power Supply
PSU Series
USER MANUAL
ISO-9001 CERTIFIED MANUFACTURER

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  • Page 1 Programmable DC Power Supply PSU Series USER MANUAL ISO-9001 CERTIFIED MANUFACTURER...
  • Page 2 This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will company. The information in this manual was correct at the time of printing. However, Good Will continues to improve products and reserves the rights to change specification, equipment, and maintenance procedures at any time without notice.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Table of Contents SAFETY INSTRUCTIONS ..........5 GETTING STARTED ............9 PSU Series Overview ......10 Appearance .......... 15 Theory of Operation ......23 OPERATION ..............36 Set Up ..........38 Basic Operation ........54 Parallel / Series Operation ....72 Test Scripts ..........
  • Page 4 PSU Series User Manual PSU Dimensions ........ 213 Declaration of Conformity ....214 INDEX ................215...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS AFETY INSTRUCTIONS This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition. Safety Symbols These safety symbols may appear in this manual or on the instrument.
  • Page 6 PSU Series User Manual Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Safety Guidelines Do not place any heavy object on the PSU.
  • Page 7 SAFETY INSTRUCTIONS Disconnect the power cord before cleaning. Cleaning the PSU  Use a soft cloth dampened in a solution of mild  detergent and water. Do not spray any liquid. Do not use chemicals containing harsh material  such as benzene, toluene, xylene, and acetone. Location: Indoor, no direct sunlight, dust free, Operation ...
  • Page 8 PSU Series User Manual Power cord for the United Kingdom When using the power supply in the United Kingdom, make sure the power cord meets the following safety instructions. NOTE: This lead/appliance must only be wired by competent persons WARNING: THIS APPLIANCE MUST BE EARTHED...

  • Page 9: Getting Started

    Main Features ................... 11 Accessories ..................12 Appearance .............. 15 PSU Series Front Panel ..............15 PSU Series Display and Operation Panel ........18 Rear Panel ..................20 Theory of Operation ..........23 Operating Area Description ............23 CC and CV Mode ................24 Slew Rate ...................

  • Page 10: Psu Series Overview

    PSU Series User Manual PSU Series Overview Series lineup The PSU series consists of 10 models, covering a number of different current, voltage and power capacities: Model name Voltage Rating Current Rating Power PSU 6-200 200A 1200W PSU 12.5-120 12.5V...

  • Page 11: Main Features

    GETTING STARTED Main Features High power density: 1500W in 1U Performance  Universal input voltage 85~265Vac, continuous  operation. Output voltage up to 600V, current up to 200A.  Active power factor correction. Features  Parallel master/slave operation with active ...

  • Page 12: Accessories

    PSU Series User Manual Accessories Before using the PSU power supply unit, check the package contents to make sure all the standard accessories are included. Standard Part number Description Qty. Accessories Output terminal cover Analog connector plug kit Output terminal M8 bolt set...
  • Page 13 GETTING STARTED PSU-001 Front Panel Filter Kit (Operation Temperature is guaranteed to 40˚C) Optional Part number Description Accessories PSU-01C Cable for 2 units of PSU-Series in parallel mode connection PSU-01B Bus Bar for 2 units of PSU-Series in parallel mode connection PSU-01A Joins a vertical stack of 2 PSU units together.
  • Page 14 PSU Series User Manual GRM-001 Rack-mount slides (General Devices P/N: C-300-S-116-RH-LH) GTL-246 USB Cable 2.0-A-B Type, Approx. 1.2M GPW-001 Power Cord SJT 12AWG/3C, 3m MAX Length, 105 ºC, RNB5-5*3P UL/CSA type GPW-002 Power Cord H05W-F 1.5mm /3C, 3m MAX Length, 105 ºC, RNB5-5*3P VDE...

  • Page 15: Appearance

    GETTING STARTED Appearance PSU Series Front Panel Display Area Voltage Current DC Power Supply 0 - 40 V / 0 - 38A PSU 40-38 VOLTAGE CURRENT Shift Lock/ Local PROT Function Test Output : Long Push Unlock ALM_CLR 9 10 12 13 Used to turn the power on/off.
  • Page 16 PSU Series User Manual Used to lock all front panel Lock/Local Lock/Local buttons other than the Output Button Button or it switches to local Unlock mode. (Long push) Used to unlock the Unlock front panel buttons. Button Used to set and display OVP, OCP...
  • Page 17 GETTING STARTED Used to enable the functions that 11. Shift Button Shift are written in blue characters below certain buttons. Used to turn the output on or off. 12. Output Output Button Lights in green when the output is 13. Output ON...

  • Page 18: Psu Series Display And Operation Panel

    PSU Series User Manual PSU Series Display and Operation Panel Display Area VOLTAGE CURRENT Displays the voltage or the parameter number of a 14. Voltage Function parameter. Meter Displays the current or the value of a Function 15. Current parameter.
  • Page 19 GETTING STARTED Lights up when CC Slew Rate Priority is enabled. 24. ISR LED Lights in green when the memory value are being 25. M1 LED recalled or saved. Lights in green when the memory value are being 26. M2 LED recalled or saved.

  • Page 20: Rear Panel

    PSU Series User Manual Rear Panel ISOLATED PROGRAMMING 4 - 20mA ISOLATED PROGRAMMING 0 - 5V / 0 - 10V DC OUTPUT RS485 / 232 ANALOG PROGRAMMING 240V S LS 47 63Hz 2000VA MAX. AC INPUT REMOTE SENSE 6-60V models: PSU 6-200, 12.5-120,...
  • Page 21 GETTING STARTED RS 485 / 232 Ethernet port for controlling the PSU remotely. RS 485 / 232 Two different types of cables can Remote-IN be used for RS232 or RS485-based remote control. PSU-232: RS232 cable with DB9 connector kit. PSU-485: RS485 cable with DB9 connector kit.
  • Page 22 PSU Series User Manual Connectors for grounding the output (two 10. Ground positions, shown in red). Screw 240V 47 63Hz 2000VA MAX. AC INPUT...

  • Page 23: Theory Of Operation

    Below is a comparison of the operating areas of each power supply. PSU Series Operating Area (6-60V models) PSU 60-25 PSU 40-38 PSU 20-76 PSU 12.5-120 12.5...

  • Page 24: Cc And Cv Mode

    PSU Series User Manual PSU Series Operating Area (100-600V models) PSU 600-2.6 PSU 400-3.8 PSU 300-5 PSU 150-10 PSU 100-15 Current (A) CC and CV Mode When the power supply is operating in constant CC and CV mode Description current mode (CC) a constant current will be supplied to the load.
  • Page 25 GETTING STARTED resistance (R ) and the critical resistance (R ). The critical resistance is determined by V . The power supply will operate in CV mode when the load resistance is greater than the critical resistance. This means that the voltage output will be equal to the V voltage but the current will be less than I...

  • Page 26: Slew Rate

    PSU Series User Manual Slew Rate The PSU has selectable slew rates for CC and CV Theory mode. This gives the PSU power supply the ability to limit the current/voltage draw of the power supply. Slew rate settings are divided into High Speed Priority and Slew Rate Priority.

  • Page 27: Internal Resistance

    GETTING STARTED be potentially hazardous. In addition, bleed resistors also allow for smoother voltage regulation of the power supply as the bleed resistor acts as a minimum voltage load. The bleed resistance can be turned on or off using the configuration settings. By default the bleed resistance is on.
  • Page 28 PSU Series User Manual PSU 60-25 0.000 ~ 2.400Ω PSU 100-15 0.000 ~ 6.667Ω PSU 150-10 0.00 ~ 15.00Ω PSU 300-5 0.00 ~ 60.00Ω PSU 400-3.8 0.0 ~ 105.3Ω PSU 600-2.6 0.0 ~ 230.8Ω...

  • Page 29: Alarms

    GETTING STARTED Alarms The PSU power supplies have a number of protection features. When one of the protection alarms is tripped, the ALM icon on the display will be lit and the type of alarm that has been tripped will be shown on the display.
  • Page 30 RPMs drop to an abnormally low level. Force Shutdown is not activated as a result of the Shutdown PSU series detecting an error. It is a function that is used to turn the output off through the application of a signal from the rear-panel analog control connector when an abnormal condition occurs.

  • Page 31: Considerations

    GETTING STARTED Considerations The following situations should be taken into consideration when using the power supply. When the power supply switch is first turned on, Inrush current an inrush current is generated. Ensure there is enough power available for the power supply when first turned on, especially if a number of units are turned on at the same time.
  • Page 32 PSU Series User Manual When the power supply is connected to a Reverse Current: regenerative load such as a transformer or Regenerative load inverter, reverse current will feed back to the power supply. The PSU power supply cannot absorb reverse current. For loads that create reverse current, connect a resistor in parallel to the power supply to bypass the reverse current.
  • Page 33 GETTING STARTED Ensure the reverse withstand voltage of the diode is CAUTION able to withstand 2 times the rated output voltage of the power supply and the forward current capacity can withstand 3 to 10 times the rated output current of the power supply.

  • Page 34: Grounding

    PSU Series User Manual Grounding The output terminals of the PSU power supplies are isolated with respect to the protective grounding terminal. The insulation capacity of the load, the load cables and other connected devices must be taken into consideration when connected to the protective ground or when floating.
  • Page 35 GETTING STARTED If the positive or negative terminal is connected to Grounded output the protective ground terminal, the insulation terminal capacity needed for the load and load cables is greatly reduced. The insulation capacity only needs to be greater than the maximum output voltage of the power supply with respect to ground.
  • Page 36 PSU Series User Manual PERATION Set Up ..............38 Line Voltage Connection ..............38 Power Up ................... 40 Wire Gauge Considerations ............41 Output Terminals ................43 Using the Output Terminal Cover ..........45 Using the Rack Mount Kit ............. 46 How to Use the Instrument ............

  • Page 37: Operation

    OPERATION Load Test Script from USB ............94 Run Test Script ................. 95 Export Test Script to USB ............. 96 Remove Test Script ................. 97...

  • Page 38: Set Up

    PSU Series User Manual Set Up Line Voltage Connection The PSU power supplies use a universal power Background input that can be used with 100 and 240 Vac systems. To connect or replace the power cord (user supplied, specification below), use the...
  • Page 39 OPERATION 2. Unscrew the power cord protective sheath. 3. Remove the 2 screws holding the power cord cover and remove. 4. Remove the AC power cord wires with a flat head screwdriver. GND: Green or Green and Yellow L: Black or Brown 2-M3x6L N: White or Blue Pan Head Screw...

  • Page 40: Power Up

    PSU Series User Manual Power Up 1. Connect the power cord to the Steps Page 38 universal power input. 2. Press the POWER switch on. 3. The power supply will show the Power On settings (Pon) at start up. If no Power On...

  • Page 41: Wire Gauge Considerations

    OPERATION Wire Gauge Considerations Before connecting the output terminals to a load, Background the wire gauge of the cables should be considered. It is essential that the current capacity of the load cables is adequate. The rating of the cables must equal or exceed the maximum current rated output of the instrument.
  • Page 42 PSU Series User Manual screw. Even if noise is not a concern, the load and remote sense wires should be twisted-pairs to reduce coupling, which might impact the stability of the power supply. The sense leads should be separated from the power leads.

  • Page 43: Output Terminals

    OPERATION Output Terminals Before connecting the output terminals to the load, Background first consider whether voltage sense will be used, the gauge of the cable wiring and the withstand voltage of the cables and load. The output terminals are of two types: two solid bars equipped with M8 sized bolt and nuts for low voltage models (PSU 6- 200, 12.5-120, 20-76, 40-38, 60-25),...
  • Page 44 PSU Series User Manual 5. Connect the positive load cable to the positive output terminal and the negative cable to the negative output terminal. 6. Reattach the output terminal Page 45 cover. Connection Use the included M8-sized bolt set to connect the Example load cables to the output terminals.

  • Page 45: Using The Output Terminal Cover

    OPERATION Using the Output Terminal Cover 1. Partially unscrew the 2 screws beside the Steps terminals. 2. Line-up the notches in the cover with the 2 screws. 3. Tighten the screws to secure the cover over the terminals. 2-M3x6L SCREW (PSU 6-200, 12.5- 120, 20-76, 40-38, 60-25)

  • Page 46: Using The Rack Mount Kit

    PSU Series User Manual Using the Rack Mount Kit The PSU series are designed to be directly Background mounted into 19 inch 1U rack mounts. The PSU can be installed using the sliding mounts (GW Part number: GRM-001). See the GRM-001 manual for installation instructions.

  • Page 47: How To Use The Instrument

    OPERATION How to Use the Instrument The PSU power supplies use a novel method of Background configuring parameter values only using the voltage or current knobs. The knobs are used to quickly edit parameter values at 0.01, 0.1 or 1 unit steps at a time.
  • Page 48 PSU Series User Manual Notice the Set key becomes illuminated when setting Note the current or voltage. If the voltage or current knobs are unresponsive, press the Set key first.

  • Page 49: Reset To Factory Default Settings

    OPERATION Reset to Factory Default Settings The F-88 configuration setting allows the PSU to Background be reset back to the factory default settings. See page 201 for the default factory settings. 1. Press the Function key. The Steps Function Function key will light up. 2.

  • Page 50: View System Version And Build Date

    PSU Series User Manual View System Version and Build Date The F-89 configuration setting allows you to view Background the PSU version number, build date, keyboard version, analog-control version, kernel build, test command version and test command build date. 1. Press the Function key. The...
  • Page 51 OPERATION 0-XX: Version (1/2) F-89 1-XX: Version (2/2) 2-XX: Build On-Year. (1/2) 3-XX: Build On-Year. (2/2) 4-XX: Build On-Month. 5-XX: Build On-Day. 6-XX: Keyboard CPLD. (1/2) 7-XX: Keyboard CPLD. (2/2) 8-XX: Analog Board CPLD. (1/2) 9-XX: Analog Board CPLD. (2/2) A-XX: Analog Board FPGA (1/2) B-XX: Analog Board FPGA.
  • Page 52 PSU Series User Manual Keyboard CPLD Version: 0x030C Example 6-03: Keyboard CPLD Version. 7-0C: Keyboard CPLD Version. Analog CPLD Version: 0x0421 Example 8-04: Analog CPLD Version. 9-21: Analog CPLD Version. Analog Board FPGA: 0x0241 Example A-02: Analog FPGA Version. B-41: Analog FPGA Version.
  • Page 53 OPERATION Option version Example O-XX: Option version. (1/2) P-XX: Option version. (2/2)

  • Page 54: Basic Operation

    PSU Series User Manual Basic Operation This section describes the basic operations required to operate the power supply. Setting OVP/OCP/UVL → from page 54  C.V. priority mode → from page 58  C.C. priority mode → from page 61 ...
  • Page 55 OPERATION VOLTAGE CURRENT Example: OVP alarm Before setting the protection settings: Ensure the load is not connected.  Ensure the output is turned off.  You can use the Function settings (F-13 and F-14) to Note apply limits to the voltage and current settings, respectively.
  • Page 56 PSU Series User Manual 2. The OVP protection function will be displayed on the voltage display and the setting will be displayed on the current display. VOLTAGE CURRENT Protection Protection function setting 3. Use the Voltage knob to select a...
  • Page 57 OPERATION The OVP, OCP or UVL protection can Clear PROT be cleared after it has been tripped by OVP/OCP/UVL protection holding the ALM_CLR button for 3 ALM_CLR seconds.

  • Page 58: Set To C.v. Priority Mode

    PSU Series User Manual Set to C.V. Priority Mode When setting the power supply to constant voltage mode, a current limit must also be set to determine the crossover point. When the current exceeds the crossover point, the mode switches to C.C.
  • Page 59 OPERATION 4. Use the Current knob to set the F- Current 03 setting. Set F-03 to 0 (CV High Speed Priority) or 2 (CV Slew Rate Priority). 0 = CV High Speed Priority F-03 2 = CV Slew Rate Priority 5.
  • Page 60 PSU Series User Manual 7. Press the Function key again to exit Function the configuration settings. The function key light will turn off. 8. Use the Current knob to set the Current current limit (crossover point). 9. Use the Voltage knob to set the Voltage voltage.

  • Page 61: Set To C.c. Priority Mode

    OPERATION Set to C.C. Priority Mode When setting the power supply to constant current mode, a voltage limit must also be set to determine the crossover point. When the voltage exceeds the crossover point, the mode switches to C.V. mode. For details about C.C. operation, see page 24. C.C. and C.V. mode have two selectable slew rates: High Speed Priority and Slew Rate Priority.
  • Page 62 PSU Series User Manual 4. Use the Current knob to set the F- Current 03 setting. Set F-03 to 1 (CC High Speed Priority) or 3 (CC Slew Rate Priority) and save. 1 = CC High Speed Priority F-03 3 = CC Slew Rate Priority 5.
  • Page 63 OPERATION 8. Use the Voltage knob to set the Voltage voltage limit (crossover point). 9. Use the Current knob to set the Current current. Notice the Set key becomes illuminated when setting Note the current or voltage. If the Voltage or Current knobs are unresponsive, press the Set key first.

  • Page 64: Panel Lock

    PSU Series User Manual Panel Lock The panel lock feature prevents settings from being changed accidentally. When activated, the Lock/Local key will become illuminated and all keys and knobs except the Lock/Local key and Output key (if active) will be disabled.

  • Page 65: Recall Setup

    OPERATION 3. When the setup is saved the unit will beep, the setup will be saved and the memory number will be shown on the display. VOLTAGE CURRENT Saved setup Recall Setup The PSU has 3 dedicated keys (M1, M2, M3) to recall setups. 1.

  • Page 66: Voltage Sense

    PSU Series User Manual Voltage Sense The PSU power supplies can be operated using local or remote voltage sense. By default the PSU ships configured for local sense. Remote Sense Connector The Remote Sense connector includes a detachable plug to facilitate making the sense connections.

  • Page 67: Remote Sense Cover

    OPERATION Remote Sense Cover Ensure the output is off before handling the remote WARNING sense connector. Use sense cables with a voltage rating exceeding the isolation voltage of the power supply. Never connect sensing cables when the output is on. Electric shock or damage to the power supply could result.

  • Page 68: Local Sense

    PSU Series User Manual Local Sense When using local sense, the sensing terminals are connected to the local sense terminals (via the local sense connections) and thus do not compensate for any possible voltage drop that is seen on the load cables.
  • Page 69 OPERATION Ensure the output is off before connecting any sense WARNING cables. Use sense cables with a voltage rating exceeding the isolation voltage of the power supply. Never connect sensing cables when the output is on. Electric shock or damage to the power supply could result.
  • Page 70 PSU Series User Manual Page 66 PSU #1 Load Output Input Output Input PSU #2 Output Output 2. Operate the instrument as normal. Page 73 See the Parallel Operation chapter for details. Serial PSU Units 1. a. Connect the 1 S+ terminal to the positive potential of the load.
  • Page 71 OPERATION Page 66 PSU #1 Load Output Input Output Input PSU #2 Output Output 2. Operate the instrument as normal. Page 82 See the Serial Operation chapter for details. To help to minimize the oscillation due to the Wire Shielding inductance and capacitance of the load cables, use and Load line impedance...

  • Page 72: Parallel / Series Operation

    Parallel / Series Operation This section describes the basic operations required to operate the power supply in series or parallel. Operating the PSU series in parallel increases the total current output of the power supply units. When used in series, the total output voltage of the power supplies can be increased.

  • Page 73: Master-Slave Parallel Overview

    OPERATION Master-Slave Parallel Overview When connecting the PSU power supplies in Background parallel, up to 4 units can be used in parallel and all units must be of the same model with similar output settings. To use the power supplies in parallel, units must be used in a “master-slave”...
  • Page 74 PSU Series User Manual Ext-V Ext-R Master VMON IMON Slave Load Slave Slave Display Limitations Only the master unit will display the voltage  and current. OVP/ OCP/UVL Slave units follow the settings of the master  when OVP/OCP/UVL is tripped on the master unit.
  • Page 75 OPERATION Remote Sense Please see the remote sense chapter for details,  page 68. Parallel Calibration The parallel calibration function can be used to  offset cables losses. External Voltage and Resistance Control Voltage/Resistance controlled remote control  can only be used with the master unit. The full scale current (in parallel) is equivalent ...

  • Page 76: Master-Slave Parallel Connection

    PSU Series User Manual PSU 6-200 Output Current 200A 400A 600A 800A PSU 12.5-120 12.5V 12.5V 12.5V 12.5V 120A 240A 360A 480A PSU 20-76 152A 228A 304A PSU 40-38 114A 152A PSU 60-25 100A PSU 100-15 100V 100V 100V 100V...
  • Page 77 OPERATION MASTER SLAVE #1 PRL OUT+ PRL IN+ A COM PRL IN- Status COM1 A COM OUT ON Status OUT ON/OFF CONT Current SUM Current Sum Alarm Status Alarm_Status Shut_Down Shut_Down A COM OUT ON Status Status COM1 SLAVE #2 PRL IN+ PRL IN- A COM...
  • Page 78 PSU Series User Manual  After the power supplies are connected in parallel, if Note you want to use the analog connector to control the power supplies, you must disassemble the cable of the master and then wire it yourself for control.
  • Page 79 OPERATION Example with Load Master negative terminal Output Input connected to Output Input ground Ground Slave #1 Output Output Ground Slave #2 Output Output Ground 1. Ensure the power is off on all power supplies. Steps 2. Choose a master and a slave unit(s). 3.

  • Page 80: Master-Slave Parallel Operation

    PSU Series User Manual Master-Slave Parallel Operation Before using the power supplies in parallel, the Master-Slave master and slave units need to be configured. Configuration 1. Configure the OVP, OCP and ULV Steps Page 54 settings for the master unit.
  • Page 81 OPERATION Only operate the power supplies in parallel if the Master-Slave units are configured correctly. Operation 1. Turn on the master and slave units. The slave Steps unit(s) will show a blank display. Master unit VOLTAGE CURRENT Slave units VOLTAGE CURRENT 2.

  • Page 82: Master-Slave Parallel Calibration

    PSU Series User Manual Master-Slave Parallel Calibration The F-16 function setting can be used to calibrate Master-Slave the output of PSU units connected in parallel. Configuration If you feel the accuracy is not good enough when you measure the accuracy in parallel mode, the parallel calibration can be used to get better measurement accuracy.
  • Page 83 OPERATION 5. On the master unit, set F-16 (Auto Page 110 Calibration Parallel Control) to 2 to turn on the parallel calibration. Calibration will begin immediately. 6. Whilst calibration is being performed, WAIT will be displayed on the master screen. Calibration will take a few moments.

  • Page 84: Master-Slave Series Overview

    PSU Series User Manual Master-Slave Series Overview When connecting PSU power supplies in series, up Background to 2 units can be used in series and all units must be of the same model. When operated in series, the power supplies can be used to increase the voltage output or setup the power supplies to output both positive and negative polarities.
  • Page 85 OPERATION OVP/OCP/UVL OVP, OCP and UVL level for each unit must be  set separately. The OVP and OCP protections are tripped  independently on the master and slave. Remote monitoring Voltage monitoring (VMON) and current  monitoring (IMON) should be performed on both units.
  • Page 86 PSU Series User Manual Bleeder Control The bleeder resistor setting should be set  equally on both units. When using analog control connector to program CAUTION or measure with PSU power supplies connected in series, make sure that each unit is separated and floating from each other.

  • Page 87: Series Connection

    OPERATION Series Connection If using the PSU in series, please be aware that each unit acts independently and thus there are no special communication buses for serial connections. Series Connection Load Unit #1 to increase Output Input Voltage Output Output Input Ground Unit #2...

  • Page 88: Series Operation

    PSU Series User Manual When connecting the units in series, diodes should be Caution connected across each output to prevent reverse voltage. 1. Ensure the power is off on both power supplies. Steps 2. Connect the master and slave unit in series as...
  • Page 89 OPERATION Voltage Current DC Power Supply PSU 40-38 0 - 40V / 0 - 38A VOLTAGE CURRENT Lock/Local PROT Function Test Shift Output : Long Push Unlock ALM_CLR 3. Make sure each unit is set to Page 121 Independent (F-93 = 0). When using the power supplies in series, each unit is operated individually, and thus no unit is considered the...
  • Page 90 PSU Series User Manual 3. Press the Output key on Output each unit to begin. The output LED will become lit. Only operate the power supplies in series if using CAUTION units of the same model number. Only a maximum of 2 units can be used in series.

  • Page 91: Test Scripts

    The PSU test function can store ten test scripts in memory. Each test script is programmed in a scripting language. For more information on how to create test scripts, please contact GW Instek. Test script file format→ from page 92 ...

  • Page 92: Test Script File Format

    PSU Series User Manual Test Script File Format The test files are saved in *.tst file format. Background Each file is saved as tXXX.tst, where XXX is the save file number 001~010. Test Script Settings Runs the chosen test script from the internal Test Run memory.

  • Page 93: Setting The Test Script Settings

    OPERATION Setting the Test Script Settings The test script settings (T-01~T-10) are set with the Steps Test key. 1. Press the Test key. The Test key TEST will light up. 2. The display will show T-01 on the left and the memory no.

  • Page 94: Load Test Script From Usb

    PSU Series User Manual 4. Rotate the Current knob to choose Current a memory number. (Excluding T- 1~10 Range 5. Press the Voltage knob to complete Voltage the setting. Press the Test key again to exit the Exit TEST Test settings. The Test key light will turn off.

  • Page 95: Run Test Script

    OPERATION 2. Turn on the power. MS ON (Mass Storage) will be displayed on the screen after a few seconds if the USB drive is recognized. Conversely, MS OFF will be displayed if removed. VOLTAGE CURRENT If the USB drive is not recognized, check to see that Note the function settings for F-20 = 1 (page 110).

  • Page 96: Export Test Script To Usb

    PSU Series User Manual 2. Configure T-01 (Run Test) to 1~10 Page 93 (save memory slot no. to run) T-01 range 1~10 3. The test script will automatically start to run. Error messages: If you try to run a test script from an Note empty memory location “Err 003”...

  • Page 97: Remove Test Script

    OPERATION 2. Turn on the power. MS (Mass Storage) will be displayed on the screen after a few seconds if the USB drive is recognized. VOLTAGE CURRENT If the USB drive is not recognized, check to see that Note the function settings for F-20 = 1 (page 109). If not, reinsert the USB flash drive.
  • Page 98 PSU Series User Manual 2. The test script will be removed from the internal memory. OK will be displayed when completed. Error messages: If you try to remove a test script from Note an empty memory location “Err 003” will be displayed on the display.

  • Page 99: Configuration

    CONFIGURATION ONFIGURATION Configuration Overview ..........100 Configuration Table ..............100 Normal Function Settings ............107 Interface Configuration Settings ..........110 USB / GPIB Settings ............110 LAN Settings ..............111 UART Settings ..............113 System Settings ................114 Power On Configuration Settings ..........115 Trigger Input and Output Configuration Settings ....

  • Page 100: Configuration Overview

    PSU Series User Manual Configuration Overview Configuration of the PSU power supplies is divided into five different configuration settings: Normal Function, USB/GPIB, LAN, UART, System Configuration Settings, Power ON Configuration, Trigger Input/Output Configuration Settings and Special Function Settings. Power ON Configuration differs from the other settings in that the settings used with Power ON Configuration settings can only be set during power up.
  • Page 101 CONFIGURATION 0.001~0.06V/msec (PSU 6-200) 0.001~0.125V/msec (PSU 12.5-120) 0.001~0.2V/msec (PSU 20-76) 0.001~0.4V/msec (PSU 40-38) 0.001~0.6V/msec (PSU 60-25) Rising voltage slew rate F-04 0.001~1.000V/msec (PSU 100-15) 0.001~1.500V/msec (PSU 150-10) 0.001~1.500V/msec (PSU 300-5) 0.001~2.000V/msec (PSU 400-3.8) 0.001~2.400V/msec (PSU 600-2.6) 0.001~0.06V/msec (PSU 6-200) 0.001~0.125V/msec (PSU 12.5-120) 0.001~0.2V/msec (PSU 20-76) 0.001~0.4V/msec (PSU 40-38) 0.001~0.6V/msec (PSU 60-25)
  • Page 102 PSU Series User Manual 0.001~2A/msec (PSU 6-200) 0.001~1.2A/msec (PSU 12.5-120) 0.001~0.76A/msec (PSU 20-76) 0.001~0.38A/msec (PSU 40-38) 0.001~0.25A/msec (PSU 60-25) Falling current slew rate F-07 0.001~0.150A/msec (PSU 100-15) 0.001~0.100A/msec (PSU 150-10) 0.001~0.025A/msec (PSU 300-5) 0.001~0.008A/msec (PSU 400-3.8) 0.001~0.006A/msec (PSU 600-2.6) 0~0.03Ω (PSU 6-200) 0~0.104Ω...
  • Page 103 0 = Disable GPIB, 1 = Enable GPIB Show GPIB available F-25 0 = No GPIB, 1 = GPIB is available status 0 = GW Instek, 1 = TDK GEN, 2 = SCPI Emulation F-26 Agilent 5700, 3 = Kikusui PWX, 4 = AMREL SPS...
  • Page 104 PSU Series User Manual Socket Server 0 = Disable, 1 = Enable F-57 Enable/Disable Show Socket Server Port F-58 No setting Web Server 0 = Disable, 1 = Enable F-59 Enable/Disable Web Password 0 = Disable, 1 = Enable F-60...
  • Page 105 CONFIGURATION 0, 1 = Version 2, 3, 4, 5 = Build date (YYYYMMDD) 6, 7 = Keyboard CPLD 8, 9 = Analog Board CPLD A, B = Analog Board FPGA C, D, E, F = Kernel Build Show Version F-89 (YYYYMMDD) G, H = Test Command Version I, J, K, L = Test Command Build...
  • Page 106 PSU Series User Manual External Output Control F-98 0 = OFF, 1 = ON Function Trigger Input and Output Configuration Settings Trigger Input Pulse 0~60ms. 0 = trigger controlled by F100 Width trigger level. 0 = None 1 = Output ON/OFF (refer to F103)

  • Page 107: Normal Function Settings

    CONFIGURATION Normal Function Settings Delays turning the output on for a designated Output ON Delay amount of time. The Delay indicator will light Time when the Delay time is not 0. Note: The Output ON Delay Time setting has a maximum deviation (error) of 20ms.
  • Page 108 PSU Series User Manual Selects High Speed Priority or Slew Rate Priority V-I Mode for CV or CC mode. The voltage or current slew rate can only be edited if CC/CV Slew Rate Priority is selected. The ISR indicator will be lit for CC Slew Rate Priority and the VSR indicator will be lit for CV Slew Rate Priority.
  • Page 109 CONFIGURATION Sets the internal resistance of the power supply. Internal Resistance F-08 0.000Ω ~ X.XXXΩ Settings (Where X.XXX = Rating Voltage / Rating Current) Bleeder control turns ON/OFF the bleeder resistor. Bleeder Control Bleeder resistors discharge the filter capacitors after power is turned off as a safety measure. F-09 0 = OFF, 1 = ON, 2 = AUTO Buzzer ON/OFF Turns the buzzer sound on or off.

  • Page 110: Interface Configuration Settings

    PSU Series User Manual This function performs offset calibration for Auto Calibration parallel control. There must be a short between Parallel Control each unit before starting the calibration. See page 82 for details. F-16 0 = Disable, 1 = Enable, 2 =...

  • Page 111: Lan Settings

    Parameter 2, 3 and 4 are only supported as use stand alone. 0 = GW INSTEK, 1 = TDK GEN, F-26 2 = Agilent N5700, 3 = Kikusui PWX, 4 = AMREL SPS LAN Settings Displays the MAC address in 6 parts.
  • Page 112 PSU Series User Manual Sets the default IP address. IP address 1~4 splits IP Address-1~4 the IP address into four sections. (F-39 : F-40 : F-41 : F-42) (0~255 : 0~255 : 0~255 : 0~255) Subnet Mask 1~4 Sets the subnet mask. The subnet mask is split into four parts.

  • Page 113: Uart Settings

    CONFIGURATION UART Settings Sets the UART mode or disables UART. UART Mode F-70 0 = Disable UART, 1 = RS232, 2 = RS485 UART Baud Rate Sets the UART baud rate. F-71 0 = 1200, 1 = 2400, 2 = 4800, 3 = 9600, 4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 Sets the number of data bits.

  • Page 114: System Settings

    PSU Series User Manual F-77 0 = Disable, 1 = Master, 2 = Slave, 3 = Display Information Displays the Multi-Drop status on the master unit UART Multi-Drop for each slave unit belonging to the Multi-Drop status bus, see page 181 for details.

  • Page 115: Power On Configuration Settings

    CONFIGURATION J-XX = Test command build year (2/2) K-XX = Test command build month L-XX = Test command build day M-XX = Reserved (1/2) N-XX = Reserved (2/2) O-XX = Option module (1/2) P-XX = Option module (2/2) Power On Configuration Settings Sets the constant voltage (CV) control mode CV Control between local and external voltage/resistance...
  • Page 116 PSU Series User Manual Sets the power supply to turn the output on or off Output Status at power up. when Power-ON Output F-92 0 = Safe Mode (Always OFF), 1 = Force Mode (Always ON), 2 = Auto Mode (Status before last time Power OFF) Sets the power supply as master or slave.

  • Page 117: Trigger Input And Output Configuration Settings

    CONFIGURATION Trigger Input and Output Configuration Settings Sets the trigger input width in milliseconds. If the Trigger Input width is set to 0 then the input trigger is controlled Width by the input active level. F100 0 ~ 60ms. 0 = trigger controlled by trigger level.

  • Page 118: Special Function

    PSU Series User Manual Trigger output pulse width. A setting of 0 will Trigger Output output the active level. Pulse Width F120 0 ~ 60ms. 0 = output active level Sets the active level of the output trigger if the Trigger Output trigger output pulse width (F120) = 0.
  • Page 119 CONFIGURATION The Normal Function settings, F-01~F-61, F-70~F- 78, F-88~F-89 and F100~F122 can be easily configured with the Function key. Ensure the load is not connected.  Ensure the output is off.  Function settings F-90~98 can only be viewed.  Function setting F-89 (Show Version) can only be Note viewed, not edited.
  • Page 120 PSU Series User Manual Press the Voltage knob to save the Voltage configuration setting. ConF will be displayed when it is configuring. VOLTAGE CURRENT Press the Function key again to exit Exit Function the configuration settings. The Function key light will turn off.

  • Page 121: Setting Power On Configuration Settings

    CONFIGURATION Setting Power On Configuration Settings The Power On Configuration settings can only be Background changed during power up to prevent the configuration settings being inadvertently changed. Ensure the load is not connected.  Ensure the power supply is off. ...
  • Page 122 PSU Series User Manual VOLTAGE CURRENT Cycle the power to save and exit the configuration Exit settings.

  • Page 123: Analog Control

    ANALOG CONTROL NALOG CONTROL The Analog Control chapter describes how to control the voltage or current output using an external voltage or resistance, monitor the voltage or current output as well as remotely turning off the output or shutting down the power supply.

  • Page 124: Analog Remote Control Overview

    Like the analog connector, it can also be used to monitor the current and voltage output as well. Use GW Instek part number PSU-ISO-V for voltage control and monitoring, and use PSU-ISO-I for current control and monitoring.

  • Page 125: Analog Control Connector Overview

    ANALOG CONTROL Analog Control Connector Overview The Analog Control Connector is a 25 pin Overview connector that can be used with the ARC (analog remote control) kit for wiring connections. The connector is used for all analog remote control. The pins used determine what remote control mode is used.
  • Page 126 PSU Series User Manual Alarm Clear 10 Alarm clear line. Alarms are cleared when a low level TTL signal is applied. A COM 11 This is the common line for the external signal pins 7 to 10, 12, 13, 19, 21, 22, 24, and 25. It is connected internally to the negative output.
  • Page 127 ANALOG CONTROL EXT-V/R CV 22 This line uses an external voltage or resistance to CONT control the output voltage. External voltage control (F-90: 1); External resistor control (F-90: 2, F-90: 3). 0 to 5V or 0 to 5kΩ; 0 % to 100 % of the rated output voltage (F-97: 0).

  • Page 128: External Voltage Control Of Voltage Output

    PSU Series User Manual External Voltage Control of Voltage Output External voltage control of the voltage output is Background accomplished using the analog control connector on the rear panel. There are two external voltage control ranges, 0~5V and 0~10V, depending on the F-97 configuration.
  • Page 129 ANALOG CONTROL If the wire shield needs to be grounded at the Connection- alt. voltage source (EXT-V), then the shield cannot also shielding be grounded at the negative (-) terminal output of the PSU power supply. This would short the output.
  • Page 130 PSU Series User Manual 4. Press the Output key. The Output voltage can now be controlled with the External voltage. The input impedance for external voltage control is Note 1MΩ. Use a stable voltage supply for the external voltage control.

  • Page 131: External Voltage Control Of Current Output

    ANALOG CONTROL External Voltage Control of Current Output External voltage control of the current output is Background accomplished using the analog control connector on the rear panel. There are two external voltage control ranges, 0~5V and 0~10V, depending on the F-97 configuration.
  • Page 132 PSU Series User Manual If the wire shield needs to be grounded at the Connection- alt. voltage source (EXT-V), then the shield cannot also shielding be grounded at the negative (-) terminal output of the PSU power supply. This would short the output.

  • Page 133: External Resistance Control Of Voltage Output

    ANALOG CONTROL 4. Press the Output key. The Output current can now be controlled with the External voltage. The input impedance for external voltage control is Note 1MΩ. Use a stable voltage supply for the external voltage control. CV and CC Slew Rate Priority are disabled for V-I mode Note (F-03) when using external voltage control.
  • Page 134 PSU Series User Manual For 0kΩ~10kΩ: Output voltage = full scale voltage × (external resistance/10) For 0kΩ~5kΩ: Output voltage = full scale voltage × (external resistance/5) Falling: For 10kΩ~0kΩ: Output voltage = full scale voltage × ([10-external resistance]/10) For 5kΩ~0kΩ: Output voltage = full scale voltage ×...

  • Page 135: External Resistance Control Of Current Output

    ANALOG CONTROL 1. Connect the external resistance according to the Steps connection diagrams above. 2. Set the F-90 (CV Control) Page 121 configuration settings to 2 for Ext-R rising or 3 for Ext-R falling. Be sure to cycle the power after the power on ...
  • Page 136 PSU Series User Manual There are two external resistance control ranges, 0~5kΩ and 0~10kΩ, depending on the F-97 configuration. See page 116 for details. The output current (0 to full scale) can be controlled with the external resistance rising 0kΩ~5kΩ/0kΩ~10kΩ or falling 5kΩ~0kΩ/10kΩ~0kΩ.
  • Page 137 ANALOG CONTROL EXT-R Connection Analog connector 2 core shielded wire or twisted Output pair Terminal Pin21 → EXT-R  Pin23 → EXT-R  Wire shield → negative (-) output terminal  1. Connect the external resistance according to the Steps connection diagrams above.
  • Page 138 PSU Series User Manual Ensure the resistor(s) and cables used exceed the Note isolation voltage of the power supply. For example: insulation tubes with a withstand voltage higher than the power supply can be used. When choosing an external resistor ensure the resistor can withstand a high degree of heat.

  • Page 139: External Control Of Output

    ANALOG CONTROL External Control of Output The output can be turned on or off externally using Background a switch. The analog control connector can be set to turn the output on from a high or low signal. The voltage across pins 19 and 20 are internally pulled up to +5V ±5% @ 500uA with 10kΩ...
  • Page 140 PSU Series User Manual Set F-94 (External output logic) in Page 121 the power on configuration settings to 0 (High = On) or 1 (Low = On) and set F-98 (External output control function) to 1(On). Be sure to cycle the power after ...
  • Page 141 ANALOG CONTROL Messages: If F-94 = 0 (High = on) and pin 19 is low Note (0) “MSG 001” will be displayed on the display. If F-94 = 1 (Low = on) and pin 19 is high (1) “MSG 002” will be displayed on the display. Output off (High=on) VOLTAGE CURRENT...

  • Page 142: External Control Of Shutdown

    PSU Series User Manual External control of Shutdown The output of the power supplies can be Background configured to shut down via an external switch. The voltage across pins 7 and 20 are internally pulled to +5V ±5% @ 500uA with 10kΩ pull-up resistor.
  • Page 143 ANALOG CONTROL When using a switch over long distances, please use a Note switch relay to extend the line from the coil side of the relay. Switch Relay Line Analog connector extention Output If a single switch control is to be used for multiple Terminal units, please isolate each instrument.

  • Page 144: Remote Monitoring

    PSU Series User Manual Remote Monitoring The PSU power supplies have remote monitoring support for current and voltage output. They also support monitoring of operation and alarm status. External monitoring of output voltage and current → from page  External monitoring of operation mode and alarm status → from ...
  • Page 145 ANALOG CONTROL Set F-96 (Monitor Voltage Select) in Page 121 the power on configuration settings to 0 (5V) or 1 (10V). Be sure to cycle the power after  setting the power on configuration settings. 1. Press the Function key and confirm Function the new configuration settings (F-96 = 0 or 1).
  • Page 146 PSU Series User Manual IMON Connection I MON Analog → connector 2 core shielded wire or twisted Output pair Terminal Pin24 → Pos (+)  Pin23 → Neg (-)  Maximum current is 5mA. Ensure the sensing circuit Note has an input impedance greater than 1MΩ.

  • Page 147: External Operation And Status Monitoring

    ANALOG CONTROL External Operation and Status Monitoring The analog control connector can also be used to Background monitor the status operation and alarm status of the instrument. The pins are isolated from the power supply internal circuitry by photo couplers. Status Com1 (Pin 1) and Status Com2 (Pin 5) are photo coupler emitter outputs, whilst pins 2~3, 14~17 are photo coupler collector outputs.
  • Page 148 PSU Series User Manual Timing diagrams Below are 4 example timing diagrams covering a number of scenarios. Note that pins 14~16 are all active low. The diagram below shows the timing diagram CV MODE: when the output is turned on when the PSU is set Output turned on to CV mode.
  • Page 149 ANALOG CONTROL The diagram below shows the timing diagram CC MODE: when the output is turned on when the PSU is set Output turned on to CC mode. CV status CC status Output status The diagram below shows the output status lines CC MODE: when the output is turned off in CC mode.

  • Page 150: External Trigger In/Out

    PSU Series User Manual External Trigger In/Out Pin 4 is used for the external trigger input and pin Background 17 is used as the trigger output. Pin 5 is the common for both pins. The trigger input can be configured to perform an...
  • Page 151 ANALOG CONTROL Schematic 4 (TRIG IN) 5 (Status COM2) 330R 17 (TRIG OUT)

  • Page 152: Isolated Analog Control Option

    PSU Series User Manual Isolated Analog Control Option The PSU power supplies can use the isolated analog connector for external control and remote monitoring. Isolated analog control option specifications → 153  Isolated analog control option overview → 154 ...

  • Page 153: Isolated Analog Control Option Specifications

    ANALOG CONTROL Isolated Analog Control Option Specifications 0~5V / 0~10V Option (PSU-ISO-V) External voltage control Accuracy and linearity: ±1% of output voltage rated output voltage Accuracy and linearity: ±1% of External voltage control output current rated output current 100ppm/ºC of rated voltage or Temperature coefficient ppm/ºC current, after a 30 minute warm- Programming input...

  • Page 154: Isolated Analog Control Option Overview

    PSU Series User Manual Isolated Analog Control Option Overview The Isolated Analog Connectors are 8 pin sockets Overview that are optically isolated from the power supply, allowing inputs with ground references that differ to the power supply. The isolated options include either an isolated voltage (0~5V/0~10V) interface or an isolated current (4~20mA) interface.

  • Page 155: Isolated External Voltage Control Of Voltage Output

    ANALOG CONTROL Isolated External Voltage Control of Voltage Output Voltage control of the voltage output uses the Background isolated voltage option (PSU-ISO-V). A voltage of 0~5V or 0~10V is used to control the full scale voltage of the instrument, where: For 0~5V: Output voltage = full scale voltage ×...
  • Page 156 PSU Series User Manual If the wire shield needs to be grounded at the Connection- alt. voltage source (EXT-V), then it can be connected as shielding shown below. EXT-V Isolated ＋ Voltage － Option Output 2 core shielded wire or twisted...
  • Page 157 ANALOG CONTROL 5. Press the Output key. The Output voltage can now be controlled with the isolated external voltage control. The input impedance for isolated external voltage Note control is 1MΩ. Use a stable voltage supply for the external voltage control.

  • Page 158: Isolated External Voltage Control Of Current Output

    PSU Series User Manual Isolated External Voltage Control of Current Output Voltage control of the current output uses the Background isolated voltage option (PSU-ISO-V). A voltage of 0~5V or 0~10V is used to control the full scale current of the instrument, where: For 0~5V: Output current = full scale current ×...
  • Page 159 ANALOG CONTROL If the wire shield needs to be grounded at the Connection- alt. voltage source (EXT-V), then it can be connected as shielding shown below. EXT-V Isolated ＋ Voltage － Option Output 2 core shielded wire or twisted Terminal pair Pin4(GND_ISO) →...

  • Page 160: Isolated External Current Control Of Voltage Output

    PSU Series User Manual 5. Press the Output key. The Output current can now be controlled with the isolated external voltage control. The input impedance of isolated external voltage Note control is 1MΩ. Use a stable voltage supply for the external voltage control.
  • Page 161 ANALOG CONTROL When connecting the external current source to the Connection isolated analog option, use shielded or twisted paired wiring. EXT-I Isolated Current Option 1or8 2 core shielded Output wire or twisted Terminal pair Pin4(GND_ISO) → EXT-I (-)  Pin2(+VPROG_ISO) → EXT-I (+) ...
  • Page 162 PSU Series User Manual 1. Connect the external current source according Panel operation to the connection diagrams above. 2. Set the F-90 power on Page 121 configuration setting to 4 (Control by Isolated Board). 3. Set the F-96 power on configuration setting to 1.

  • Page 163: Isolated External Current Control Of Current Output

    ANALOG CONTROL Isolated External Current Control of Current Output Current control of the current output uses the Background isolated current option (PSU-ISO-I). A current of 4~20mA is used to control the full scale current of the instrument, where: Output current = full scale current × ((external current - 4mA)/16mA) When connecting the external current source to the Connection...
  • Page 164 PSU Series User Manual If the wire shield needs to be grounded at the Connection- alt. current source (EXT-I) , then it can be connected as shielding shown below. EXT-I Isolated Current Option Output 2 core shielded wire or twisted...

  • Page 165: Isolated External Voltage And Current Monitoring

    ANALOG CONTROL 6. Press the Output key. The Output current can now be controlled with the External current. Use a stable current source for the external current Note control. CV and CC Slew Rate Priority are disabled for V-I mode Note (F-03) when using external voltage control.
  • Page 166 PSU Series User Manual The isolated analog connector can also be used to Background monitor the current (IMON) or voltage (VMON). For the isolated voltage option, an output of 0~5V or 0~10V represents the voltage or current output of 0~ rated current/voltage output.
  • Page 167 ANALOG CONTROL IMON Connection Isolated Voltage I MON Current 0→10V Option 0→5V Output 4mA→ 20mA Terminal Pin7(+IMON_ISO) → Pos (+)  Pin5(GND_ISO) → Neg (-)  1. Connect the external voltage or external current Steps source to the isolated voltage or current option according to the connection diagrams above.
  • Page 168 PSU Series User Manual The monitor outputs are strictly DC and should not be Note used to monitor analog components such as transient voltage response or ripple etc.

  • Page 169: Communication Interface

    OMMUNICATION INTERFACE This chapter describes basic configuration of IEEE488.2 based remote control. For a command list, refer to the programming manual, downloadable from GW Instek website, www.gwinstek.com Interface Configuration ...........170 USB Remote Interface ..............170 Configuration..............170 Function Check ..............171 GPIB Remote Interface ..............

  • Page 170: Interface Configuration

    PSU Series User Manual Interface Configuration USB Remote Interface Configuration Type A, host PC side connector Configuration Rear panel Type B, slave PSU side connector 1.1/2.0 (full speed/high speed) Speed CDC (communications device USB Class class) 1. Connect the USB cable to the rear Steps panel USB B port.

  • Page 171: Function Check

    Serial number, and Firmware version in the following format. GW-INSTEK,PSU40-38,TW123456,T0.01.12345678 Manufacturer: GW-INSTEK Model number : PSU40-38 Serial number : TW123456 Firmware version : T0.01.12345678 For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com.

  • Page 172: Gpib Remote Interface

    PSU Series User Manual GPIB Remote Interface Configuration To use GPIB, the optional GPIB option (GW Instek part number: PSU-GPIB) must be installed. This is a factory installed option and cannot be installed by the end-user. Only one GPIB address can be used at a time.
  • Page 173 COMMUNICATION INTERFACE 7. The RMT indicator will turn on when a remote connection has been established. VOLTAGE CURRENT RMT indicator Maximum 15 devices altogether, 20m cable GPIB constraints  length, 2m between each device Unique address assigned to each device ...

  • Page 174: Gpib Function Check

    PSU Series User Manual GPIB Function Check To test the GPIB functionality, National Background Instruments Measurement and Automation Explorer can be used. This program is available on the NI website, www.ni.com., via a search for the VISA Run-time Engine page, or “downloads” at the following URL, http://www.ni.com/visa/...
  • Page 175 COMMUNICATION INTERFACE 2. From the Configuration panel access; My System>Devices and Interfaces>GPIB 3. Press Scan for Instruments. 4. Select the device (GPIB address of PSU) that now appears in the System>Devices and Interfaces > GPIB-USB-HS “GPIBX” node. 5. Click on the VISA Properties tab on the bottom. 6.
  • Page 176 PSU Series User Manual 7. Click on Configuration. 8. Click on the GPIB Settings tab and confirm that the GPIB settings are correct. 9. Click on the I/O Settings tab. 10. Make sure the Enable Termination Character check box is checked, and the terminal character is \n (Value: xA).

  • Page 177: Uart Remote Interface

    GW-INSTEK,PSU40-38, TW123456,T0.02.20131205 For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com. UART Remote Interface Configure UART The PSU uses the IN & OUT ports for UART...
  • Page 178 PSU Series User Manual PSU-232 RS232 DB-9 Connector Remote IN Port Remarks cable with DB9 Pin No. Name Pin No. Name connector Housing Shield Housing Shield Twisted pair PSU-485 RS485 DB-9 Connector Remote IN Port Remarks cable with DB9 Pin No.
  • Page 179 COMMUNICATION INTERFACE 2. Press the Function key to enter Page 118 the Normal configuration settings. Set the following UART settings: Interface: 0= Disable UART, F-70 = 1 or 2 1= RS232 or 2 = RS485 Set the baud rate: 0=1200, 1=2400, 2=4800, 3=9600, F-71 = 0 ~ 7 4=19200, 5=38400, 6=57600, 7=115200...

  • Page 180: Uart Function Check

    Serial number, and Firmware version in the following format: GW-INSTEK,PSU40-38,TW123456,T0.01.12345678 Manufacturer: GW-INSTEK Model number : PSU40-38 Serial number : TW123456 Firmware version : T0.01.12345678 For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com.

  • Page 181: Multiple Unit Connection

    COMMUNICATION INTERFACE Multiple Unit Connection The PSU power supplies can have up to 31 units daisy-chained together using the 8 pin connectors (IN OUT ports) on the rear panel. The first unit (master) in the chain is remotely connected to a PC using RS232 or RS485 (Legacy Multi-Drop mode), or USB, GPIB or LAN (Multi-Drop mode).
  • Page 182 PSU Series User Manual 4. Connect all the remaining units in the same fashion until all the units have been daisy- chained together. Unit #N Unit #2 Unit #1 RS 485 / 232 RS 485 / 232 RS 485 / 232...

  • Page 183: Multi-Drop Mode

    COMMUNICATION INTERFACE Set the following settings: F-70 = 2 Set the slave unit to RS485. Set the baud rate (make all units, F-71 = 0~7 including the master, the same baud). See page 177. F-72 = 1 Set to 8 data bits. F-73 = 0 Parity to none.
  • Page 184 PSU Series User Manual Multi-Drop mode 1. Check the F-89 (System version and build date) Operation settings first on all units (see page 114). The two parameters O and P (Option Module) must be the same on all units before any multiple unit connection can be established.
  • Page 185 COMMUNICATION INTERFACE 8. Set the addresses of all slave units using the F-76 parameter. Set the address of the unit. It F-76 = 00~30 must be a unique address identifier. 9. Set the Multi-Drop setting parameter (F-77) to Slave for all slave units. Set the Multi-Drop setting to F-77 = 2 slave.

  • Page 186: Multiple Units Function Check

    PSU Series User Manual 15. Multiple units can now be operated using SCPI commands. See the programming manual or see the function check below for usage details. RS-485 slave serial link pin assignment Slave serial link 8 Pin Connector (IN)
  • Page 187 COMMUNICATION INTERFACE Multiple units Function Check Invoke a terminal application such as Realterm. Functionality check To check the COM port No, see the Device Manager in the PC. For WinXP; Control panel → System → Hardware tab. Below shows examples using the Legacy Multi- Drop mode and the Multi-Drop mode.
  • Page 188 PSU Series User Manual GW-INSTEK,PSU40-38,,T0.01.12345678 Note: TDK commands do not use LF (line feed) codes to terminate commands. See the TDK GENESYS user manual for further information. Multi-Drop mode When using the Multi-Drop mode, the entire SCPI command list developed for the PSU can be used.
  • Page 189 Returns the active units and master unit in the bus. 33=0b100001 The units at address 0 and address 5 are on-line. Master device's address is 0. For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com.

  • Page 190: Configure Ethernet Connection

    The PSU series supports both DHCP connections so the instrument can be automatically connected to an existing network or alternatively, network settings can be manually configured.

  • Page 191: Web Server Remote Control Function Check

    COMMUNICATION INTERFACE 2. Press the Function key to enter the Page 118 Normal configuration settings. Set the following LAN settings: F-36 = 1 Turn LAN on F-37 = 1 Enable DHCP F-59 = 1 Turn the web server on F-60 = 0 or 1 Set to 0 to disable web password, set to 1 to enable web password F-61 = 0000...
  • Page 192 The web browser interface allows you to access the following: Network configuration settings  Analog control pinouts & usage  PSU dimensions  Operating area diagram  For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com.

  • Page 193: Sockets Server Configuration

    COMMUNICATION INTERFACE Sockets Server Configuration This configuration example will configure the PSU Configuration socket server. The following configuration settings will manually assign the PSU an IP address and enable the socket server. The socket server port number is fixed at 2268.

  • Page 194: Socket Server Function Check

    PSU Series User Manual Socket Server Function Check To test the socket server functionality, National Background Instruments Measurement and Automation Explorer can be used. This program is available on the NI website, www.ni.com., via a search for the VISA Run-time Engine page, or “downloads” at the following URL, http://www.ni.com/visa/...
  • Page 195 COMMUNICATION INTERFACE 4. Select Manual Entry of Raw Socket from the popup window. 5. Enter the IP address and the port number of the PSU. The port number is fixed at 2268. 6. Click the Validate button. 7. A popup will appear if a connection is successfully established.
  • Page 196 PSU Series User Manual 9. Next configure the Alias (name) of the PSU connection. In this example the Alias is: PSU_DC1 10. Click finish. 11. The IP address of the PSU will now appear under Network Devices in the configuration panel.
  • Page 197 COMMUNICATION INTERFACE 13. Click the Configuration icon, 14. Click on I/O Settings. 15. Make sure the Enable Termination Character check box is checked, and the terminal character is \n (Value: xA). 16. Click Apply Changes. 17. Click the Input/Output icon. 18.
  • Page 198 PSU Series User Manual 20. The *IDN? query will return the Manufacturer, model name, serial number and firmware version in the dialog box. GW-INSTEK,PSU40-38,TW123456,T0.02.20131205 For further details, please see the programming Note manual, available on the GW Instek web site @ www.gwinstek.com.

  • Page 199: Faq

    • How often should the power supply be calibrated? • The OVP voltage is triggered earlier than expected. • Can I combine more than 1 cable together for the output wiring? • The accuracy does not match the specification. How often should the power supply be calibrated? The PSU should be calibrated by an authorized service center at least every 2 years.
  • Page 200 PSU Series User Manual The accuracy does not match the specification. Make sure the device is powered On for at least 30 minutes, within +20°C~+30°C. This is necessary to stabilize the unit to match the specification. For more information, contact your local dealer or GWInstek at...

  • Page 201: Appendix

    APPENDIX PPENDIX PSU Factory Default Settings The following default settings are the factory configuration settings for the power supply. For details on how to return to the factory default settings, see page Initial Settings Default Setting Output LOCK 0 (Disabled) Voltage Current 1.1 X Vrate...
  • Page 202 PSU Series User Manual Alarm Recovery and F-18 0 = Safe Mode Output Status Lock Mode F-19 0:Lock Panel, Allow Output OFF USB / GPIB setting Setting Default Setting Setup Rear USB Speed F-22 2 = Auto Detect Speed GPIB address...
  • Page 203 APPENDIX Trigger Input and Output Setting Default Setting Configuration Settings Trigger Input Pulse F100 0 = trigger controlled by trigger level. Width Trigger Input Action F102 0 = None Output State When F103 0 = OFF Receiving Trigger Apply Voltage Setting on F104 0 = 0V Trigger...

  • Page 204: Error Messages & Messages

    PSU Series User Manual Error Messages & Messages The following error messages or messages may appear on the PSU screen during operation. Error Messages Description Master & slave board over temperature protection in PSU Master board over temperature protection in...

  • Page 205: Led Ascii Table Character Set

    APPENDIX LED ASCII Table Character Set Use the following table to read the LED display messages.

  • Page 206: Psu Specifications

    PSU Series User Manual PSU Specifications The specifications apply when the PSU is powered on for at least 30 minutes. Output Model 6-200 12.5-120 20-76 40-38 60-25 Rated Output Voltage 12.5 Rated Output Current Rated Output Power 1200 1500 1520...
  • Page 207 APPENDIX Remote sense compensation voltage (single wire) Rated load ms Rise time No load Rated load ms Fall time No load 1500 2000 2500 3000 4000 Transient response time Constant Current Mode Model 6-200 12.5-120 20-76 40-38 60-25 Line regulation Load regulation 20.2 12.6...
  • Page 208 PSU Series User Manual Setting Over current 1.5 - 16.5 1 - 11 0.5 - 5.5 0.38 - 4.18 0.26 - 2.86 range protection Setting (OCP) 0.076 0.052 accuracy Under voltage Setting 0 - 105 0 - 157.5 0 - 315...
  • Page 209 APPENDIX Front Panel Model 6-200 12.5-120 20-76 40-38 60-25 Display, 4 digits Voltage accuracy 0.1% + Current accuracy 0.2% + Model 100-15 150-10 300-5 400-3.8 600-2.6 Display, 4 digits Voltage accuracy 0.1% + 1200 Current accuracy 0.2% + 11.4 Model PSU All models GREEN LED's: CV, CC, V, A, VSR, ISR, DLY, RMT, LAN, M1, M2, M3, Indications...
  • Page 210 PSU Series User Manual Output current 0.2% + mA programming accuracy Output voltage 10.2 13.6 20.4 programming resolution Output current 0.34 0.19 0.13 0.09 programming resolution Output voltage 0.1% + mV 150 300 measurement accuracy Output current 0.2% + mA...
  • Page 211 APPENDIX Interface Capabilities Model PSU All models TypeA: Host, TypeB: Slave, Speed: 1.1/2.0, USB Class: CDC(Communications Device Class) MAC Address, DNS IP Address, User Password, Gateway IP Address, Instrument IP Address, Subnet Mask SCPI - 1993, IEEE 488.2 compliant interface RS-232/RS-485 Complies with EIA232D / EIA485 Specifications Environment Conditions...
  • Page 212 PSU Series User Manual Measurement frequency bandwidth is 10Hz to 20MHz. Measurement frequency bandwidth is 5Hz to 1MHz. From 10% to 90% of rated output voltage, with rated resistive load. From 90% to 10% of rated output voltage, with rated resistive load.
  • Page 213 APPENDIX PSU Dimensions PSU 6-200, PSU 12.5-120, PSU 20-76, PSU 40-38, PSU 60-25 Units = mm Voltage Current DC Power Supply 0 - 40V / 0 - 38A VOLTAGE CURRENT Shift Output Lock/Local PROT Function Test : Long Push Unlock ALM_CLR 447.2 423.0...
  • Page 214 PSU Series User Manual Declaration of Conformity GOOD WILL INSTRUMENT CO., LTD. declare that the below mentioned product Type of Product: Programmable DC Power Supply Model Number: PSU 6-200, PSU 12.5-120, PSU 20-76, PSU 40-38, PSU 60-25, PSU 100-15, PSU 150-10, PSU 300-5, PSU 400-3.8, PSU 600-2.6...
  • Page 215 INDEX NDEX Accessories ......... 12 USB/GPIB settings ....110 Conventions ........ 47 Alarm CV mode description ........29 Analog connector operation ........58 Declaration of conformity ..214 pin assignment ......125 Analog control Default settings output control ......139 reset..........49 overview ........
  • Page 216 PSU Series User Manual List of features ......11 multi-unit configuration ..181, 184 multi-unit function check ..187 Marketing sockets configuration ....193 contact .......... 200 sockets function check ....194 Messages ........204 UART configuration ....177 Model differences ...... 10 UART function check ....

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