1. Manuals
  2. Brands
  3. NF Manuals
  4. AC Power Distribution
  5. DP420LS
  6. Instruction manual

NF DP420LS Instruction Manual

Programmable ac power source
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
PROGRAMMABLE AC POWER SOURCE
DP420LS/DP480LS
INSTRUCTION MANUAL
NF Corporation

Advertisement

Table of Contents
loading

Related Manuals for NF DP420LS

Summary of Contents for NF DP420LS

  • Page 1 PROGRAMMABLE AC POWER SOURCE DP420LS/DP480LS INSTRUCTION MANUAL NF Corporation...
  • Page 3 DA00056421-003 PROGRAMMABLE AC POWER SOURCE DP420LS/DP480LS INSTRUCTION MANUAL...

  • Page 6: Preface

     Preface  Thank you for purchasing our Programmable AC Power Source DP420LS/DP480LS. For safe and correct use of the electrical product, please first read "Safety Precautions" on the next page.  Alert symbols in this manual This manual uses the following alert symbols. The instructions by these alert symbols shall be carefully obeyed to ensure equipment operator's safety and prevent damage to equipment.

  • Page 7: Safety Precautions

     Safety Precautions  For safe use, ensure to obey the following warnings and considerations. We are not responsible for damage resulting from failure to obey these warnings and considerations. This product is an insulation Class I device (with a protective conductor terminal) complying with the JIS and IEC standards.
  • Page 8 When this product is used in wet condition, it may cause an electric shock and a fire. If this product is exposed to water, cut the power at the distribution board immediately, and contact NF Corporation or one of our representatives.
  • Page 9  Other symbol Chassis This indicates that the terminal (or external conductor for a connector) is connected to the chassis.  Request about disposal For environmental preservation, this product shall be disposed of through an appropriate industrial waste disposer. This product does not include a battery. PROGRAMMABLE AC POWER SOURCE...

  • Page 10: Table Of Contents

    3.3.2 Item Selection ....................30 3.3.3 Using Soft-keys ....................31 3.3.4 Closing Windows ....................31 3.3.5 Entering Values (Numerical Entry Box) .............. 32 3.3.6 Entering Strings (Character String Entry Box)............ 33 3.3.7 Using Shortcut Operations (SHIFT Key) ............34 DP420LS/DP480LS...
  • Page 11 Using the Continuous Function ................. 35 3.4.1 Setting the AC/DC Mode and the Signal Source ..........35 3.4.2 Setting the Output Range .................. 38 3.4.3 Setting Waveforms .................... 39 3.4.4 Setting the Output Voltage (Single-phase Output) ..........41 3.4.5 Setting the Output Voltage (Polyphase System) ..........42 3.4.6 Setting the Output Frequency ................
  • Page 12 Using External Signal in DC-VCA Mode ............164 4.18 Control Using External Control Function ..............165 4.18.1 Using CONTROL I/O ..................166 4.18.2 Control of DIP or RIN ..................171 4.19 Synchronizing the Output Frequency with the Power Line or the External Signal ... 172 DP420LS/DP480LS...
  • Page 13 4.20 Amplifying the External Signal Input ............... 174 4.21 Turning the Output On or Off Rapidly ..............175 4.22 Enabling Automatic Output-On at Power-On ............177 4.23 Power Unit Energization Setting (Using Under the Restricted Rated Power) ..179 4.24 Key Lock .........................
  • Page 14 11.22.1 External Synchronous Signal Input (Signal Source SYNC only) ...... 253 11.22.2 Voltage Setting Signal Input (Signal Source VCA only) ........253 11.22.3 External Signal Input (only EXT and ADD)............254 11.23 General Function ....................254 11.24 Memory Function ....................255 11.25 Self-diagnosis/Protection Function................256 DP420LS/DP480LS...
  • Page 15 11.26 External Control Function ..................256 11.26.1 CONTROL I/O ....................257 11.26.2 Control of peripherals by device control ............258 11.27 External Interface ....................258 11.28 USB Memory Interface .................... 259 11.29 Waveform Monitor Output ..................259 11.30 Operation Environment ................... 260 11.31 Externals, Weight, and Terminal Block ..............

  • Page 16: List Of Figures

    Figure 5-1 Component Name (Display Areas on the Screen)..........188 Figure 5-2 Menu Composition ....................192 Figure 7-1 Remote Controller External View ................. 208 Figure 7-2 Correspondence between Front Grills and Air Filters ........... 209 Figure 9-1 Error Message Screen Example ................216 DP420LS/DP480LS...
  • Page 17 Figure 11-1 Range of Ambient Temperature/Humidity ............260 Figure 11-2 Outline Dimensional Drawing (DP420LS/DP480LS) .......... 262 Figure 11-3 Outline Dimensional Drawing when using fixing bracket for 1 unit ..... 263 Figure 11-4 Outline Dimensional Drawing when using Jointing Plate for 2 Units ....264 Figure 11-5 Outline Dimensional Drawing when using Jointing Plate for 3 Units ....
  • Page 18 Table 4-17 Setting Items to be Reset ..................184 Table 5-1 Component Name (Display Areas on the Screen) ..........188 Table 5-2 Status Icons ......................189 Table 5-3 Measured Value Display Items................190 Table 5-4 Output Setting Display Items ................. 191 DP420LS/DP480LS xiii...
  • Page 19 Table 5-5 Menus of the Continuous Function ................ 192 Table 5-6 Menus of the Sequence Function ................193 Table 5-7 Menus of the Simulation Function ................. 194 Table 5-8 Menus of the Memory Function ................194 Table 5-9 System Menus ...................... 195 Table 7-1 System Cable .......................

  • Page 20: Outline

    1. Outline 1.1 Overview ................2 1.2 Features ................2 DP420LS/DP480LS...

  • Page 21: Overview

    1. Outline Overview Programmable AC power source DP420LS/DP480LS are 42 kVA/48 kVA single phase AC stabilized power source which inherit the performance and function of DP series and support reverse power flow* for a short time. It is powered from three-phase 200 V AC. It provides various interfaces such as the external control input/output, communication interface, and remote controller to address a wide variety of usage.
  • Page 22  Editing/transferring/exporting*/performing Sequence  Editing/transferring/exporting*/performing Simulation *Exporting the data to USB memory allows the data to be set to DP420LS/DP480LS.  USB memory support (supported format type: FAT32) You can write/read the following data to/from a commercial USB memory stick: ...
  • Page 23 IEC 61000-4-34 test. In this document, it is written as DIP. When using this product in combination with DIP, consult NF Corporation. Note: When performing the tests specified by the IEC standard, use both DIP and Immunity Test Software.

  • Page 24: Preparation Before Use

    2. Preparation before Use Check before Use ··············································· 6 About Installation Environment ······························ 7 Cautions during Moving and Transportation·············· 9 Grounding and Power Connections ······················ 10 Output and System Cable Connection ··················· 13 Simple Operation Check ···································· 18 Calibration ······················································· 20 DP420LS/DP480LS...

  • Page 25: Check Before Use

     Safety Precautions (Page ii)  2.4 Grounding and Power Connections  Check the appearance and contents. If there is any problem, contact the seller (NF Corporation or our agent) from whom you purchased this product.  Appearance check Make sure that there is no damage or dent made during the transportation on the LCD screen, keys, jog, or shuttle of the control panel, or rear connectors.

  • Page 26: About Installation Environment

     If you install the product in a closed narrow room, air conditioning equipment is required. The heat value of this product is shown in Table 2-2. Table 2-2 Heat Value Model Rated output Heat value DP420LS 42 kVA 12.6 kW 10840 kcal/h DP480LS 48 kVA 14.4 kW...
  • Page 27 2. Preparation before Use  About arrangement  Do not place the product on its side, back or top.  Do not stack the product on top of the other, or place it in front or back of the other (arrangement which makes the cabinet placed behind inhale the exhaust heat of the other).

  • Page 28: Cautions During Moving And Transportation

     Do not use the casters to move this product on an uneven or irregular surface. This product may fall down, and cause death or severe injury of people around. DP420LS/DP480LS...

  • Page 29: Grounding And Power Connections

    2. Preparation before Use Grounding and Power Connections  Ensure to ground. This product uses a line filter. If this product is not grounded, an electric shock might occur. WARNING  Ensure to connect the protective conductor terminal of the power input terminal of this product to an earth ground so that ground resistance is 100 ...

  • Page 30: Table 2-4 Maximum Input Power/Current

    Table 2-4 Maximum Input Power/Current Rated Maximum Maximum Model Output Input Power Input Current DP420LS 42 kVA 63 kVA 214 A DP480LS 48 kVA 72 kVA 245 A  Power input connection procedure Check the current capacity of the three-phase distribution board before wiring.

  • Page 31: Figure 2-2 Power Input Terminal

    2. Preparation before Use Distribution board (Protective grounding) Figure 2-2 Power input terminal WARNING  Do not use this product when the resin-molded terminal cover is removed. Otherwise, an electric shock might occur.  Use enough thick cables or attach some additional guards to prevent touching live conductive parts after attaching the resin-molded terminal cover.

  • Page 32: Output And System Cable Connection

     Use enough thick cables or attach some additional guards to prevent touching live conductive parts after attaching the resin-molded terminal cover.  When no load is connected, attach the resin-molded terminal cover so that the cutout of the cover comes on the upside. DP420LS/DP480LS...

  • Page 33: Polyphase System

    2. Preparation before Use 2.5.2 Polyphase System System Cable (1P3W) System Cable (3P4W) Single-phase three-wire system Three-phase four-wire system Figure 2-3 System Cable connection diagram Optional System Cable should be connected to the SYSTEM I/O connector of this product. The cabinet which the L1 connector of the System Cable is connected to becomes L1 phase, and the output terminals Hi and Lo correspond to the L1 and N terminals, respectively.
  • Page 34 The neutral line can be connected to the Lo terminal with two methods described below. The neutral line can be grounded. If the load has a ground terminal, connect it to the chassis terminal of each output terminal. Be sure to tighten the screws firmly. DP420LS/DP480LS...
  • Page 35 2. Preparation before Use (a) When connecting the load with the neutral line (single-phase three-wire or three-phase four-wire connection): Connect the neutral point of load with the Lo terminal of each cabinet using cables with same length and diameter as the voltage line. Alternatively, connect between the Lo terminals of each cabinet by a cable which is as short as possible and has a diameter equal to or more than that of the voltage line, and then connect one of the Lo terminals with the neutral point of load by a cable with same length and diameter as the voltage line.
  • Page 36  Use enough thick cables or attach some additional guards to prevent touching live conductive parts after attaching the resin-molded terminal cover.  When no load is connected, attach the resin-molded terminal cover so that the cutout of the cover comes on the upside. DP420LS/DP480LS...

  • Page 37: Simple Operation Check

    Check that all LEDs on the control panel illuminate for several seconds, and then turn off, and that “NF” logo mark appears on the LCD screen (see 3.2.3). If LAN interface is equipped, "LXI" is displayed below the logo mark.
  • Page 38 Press the [Osc] soft-key and select [6: Phs Mode] to display the [Phase Mode] window, and check that the mode is set to [Balance] (balanced mode). Three-phase system Single-phase three-wire system DP420LS/DP480LS...

  • Page 39: Calibration

    2. Preparation before Use 8. Press the OUTPUT key to turn the output on. Press the V key to open the numerical entry box for AC voltage (ACV). Raise the AC voltage setting value gradually by using the jog, shuttle, arrow keys, and numeric keypad.

  • Page 40: Basic Operation

    3. Basic Operation Component Name ············································· 22 Power On/Off ··················································· 26 Basic Key Operations ········································ 29 Using the Continuous Function ···························· 35 DP420LS/DP480LS...

  • Page 41: Component Name

    3. Basic Operation Component Name 3.1.1 Front 1. Eyebolt 2. Control panel 3. Remote controller 4. USB memory connector connector 5. Front grill 6. Power switch 7. Caster 8. Adjuster foot Figure 3-1 Component Name (Front) Table 3-1 Component Name (Front) Number Name Description...

  • Page 42: Rear

    7. USB connector 8. Air outlet 10. Resin-molded cover 11. Output terminal (for power input terminal) 12. Sensing input terminal 9. Power input 13. Resin-molded cover terminal (for output and sensing input terminal) Figure 3-2 Component Name (Rear) DP420LS/DP480LS...

  • Page 43: Table 3-2 Component Name (Rear)

    3. Basic Operation Table 3-2 Component Name (Rear) Number Name Description Refer to External signal input Used when controlling the voltage value setting 4.17, connector by the external signal (VCA), when 4.19, synchronizing the output frequency with the 4.20 external signal (SYNC), and when outputting the amplified external signal (EXT, ADD).

  • Page 44: Control Panel

    LCD screen Displays the measured values or menu. MEMORY key Displays the Memory View. V key Opens the numerical entry box for the output 3.4.4, voltage setting. 3.4.5 F key Opens the numerical entry box for the frequency 3.4.6 setting. DP420LS/DP480LS...

  • Page 45: Power On/Off

    3. Basic Operation Table 3-3 Component Name (Control Panel) (continued) Number Name Description Refer to I key Opens the RMS current limiter set window. 4.1.2 SHIFT key Turns on or off the shift state, which enables 3.3.7 Shortcut operations. SHIFT LED Illuminates when the shift state is turned on.

  • Page 46: Screen Display And Operations At Starting Up

    1. The "NF" logo mark is displayed for a few seconds or more than 10 seconds. The length for which this logo is displayed depends on your model and system.

  • Page 47: Checking The Rated Power

    3. Basic Operation 3.2.5 Checking the Rated Power On the screen after startup, the rated power icon is displayed in the position shown in the screen below. The value in the icon indicates the maximum electric power that can be output. In this case, the maximum electric power is 48.0 kVA.

  • Page 48: Basic Key Operations

    Continuous function, Sequence function, and Simulation function from the left. When you press the ENTER key, the screen for the selected function is displayed. You cannot change the function in the output on state. However, you can move to the Memory function screen or System function screen. DP420LS/DP480LS...

  • Page 49: Item Selection

    3. Basic Operation 3.3.2 Item Selection You can move the cursor (highlighted icon) by using arrow keys or the jog. However, some items cannot be selected depending on your system. These items are skipped when moving the cursor. If you press the ENTER key, the item under the cursor is selected and run. If the item is a menu, the menu screen, window, or selection box is displayed.

  • Page 50: Using Soft-Keys

     Pressing the soft-key under the [OK] button (fourth button from the left) means same as selecting the [OK] button. Similarly, pressing the soft-key under the [Cancel] button (second button from the left) means same as selecting the [Cancel] button. DP420LS/DP480LS...

  • Page 51: Entering Values (Numerical Entry Box)

    3. Basic Operation 3.3.5 Entering Values (Numerical Entry Box)  Entering values with arrow keys/jog or shuttle For an item to set value, hover the cursor over the value (which will be highlighted) and press the ENTER key to open a numerical entry box shown in the screen below in which you can enter a value. Move to the desired digit by using the right or left arrow key and increment/decrement the value by using the up or down arrow key/the jog or shuttle.

  • Page 52: Entering Strings (Character String Entry Box)

    Pressing the down arrow key ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz 0123456789!#$%&'()+,-.;=@[]^_`{}~ (Note)  indicates a space. -------- Notes ------------------------------------------------------------------------------------------------------------  The name of the data which will be saved in the internal memory or USB memory must be 20 characters long at a maximum. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 53: Using Shortcut Operations (Shift Key)

    3. Basic Operation 3.3.7 Using Shortcut Operations (SHIFT Key) When you press the SHIFT key, the SHIFT LED illuminates. In this state (shift state), pressing one of the V, F, I, and any keys in the numeric keypad enables shown in Table 3-6. In this instruction manual, pressing a key in the shift state is denoted by "...

  • Page 54: Using The Continuous Function

    The signal source is the total of the external and the internal signal source. Set the voltage gain for the external input signal, output voltage for the internal signal source, output waveform, frequency, output on phase, and output off phase through the control panel or the remote control. DP420LS/DP480LS...

  • Page 55: Table 3-9 List Of The Selectable Combinations Of The Ac/Dc Mode And The Signal Source

    3. Basic Operation Table 3-9 List of the Selectable Combinations of the AC/DC Mode and the Signal Source Output Signal source AC/DC phase mode SYNC mode 1P2W AC-INT AC-VCA AC-SYNC AC-EXT AC-ADD ACDC ACDC-INT ACDC-SYNC ACDC-EXT ACDC-ADD DC-INT DC-VCA 1P3W AC-INT AC-VCA AC-SYNC...
  • Page 56 Press the SHIFT key to enter the shift state (the SHIFT LED illuminates). When you press the 7 key of the numeric keypad during the shift state, the AC/DC mode is switched in the following order: AC, ACDC, DC, AC. Some modes may be skipped and cannot be selected depending on the signal source. DP420LS/DP480LS...

  • Page 57: Setting The Output Range

    3. Basic Operation Switching the signal source Press the SHIFT key to enter the shift state (the SHIFT LED illuminates). When you press the 8 key of the numeric keypad during the shift state, the signal source is switched in the following order: INT, VCA, SYNC, EXT, ADD, INT.

  • Page 58: Setting Waveforms

    You can select a waveform of the internal signal source from sine wave (SIN), clipped sine wave (CLP, three types available), and arbitrary waveform (ARB, 16 types available). See 4.6 for details on the clipped sine wave, and 4.7 on the arbitrary waveform. DP420LS/DP480LS...
  • Page 59 3. Basic Operation -------- Notes ------------------------------------------------------------------------------------------------------------  The AC voltage setting (ACV) is common between SIN and CLP, but ARB is independent of these. When you switch the waveform selection among SIN, CLP, and ARB, the AC voltage setting is also switched. The DC output voltage setting (DCV) is same regardless of the waveform setting.

  • Page 60: Setting The Output Voltage (Single-Phase Output)

    (recalculated to a peak value) and the DC voltage setting. For details, see 4.1.3. -----------------------------------------------------------------------------------------------------------------------------  Operation procedures for setting the AC voltage 1. Select the [ACV] item and then enter a numeric value. For how to enter values, see 3.3.5. DP420LS/DP480LS...

  • Page 61: Setting The Output Voltage (Polyphase System)

    3. Basic Operation -------- Notes ------------------------------------------------------------------------------------------------------------  Set the RMS values for the voltages of the sine wave (SIN) and the clipped sine wave (CLP) and the Peak-to-Peak value for the voltage of the arbitrary waveform (ARB). -----------------------------------------------------------------------------------------------------------------------------  Operation procedures for setting the DC voltage 1.
  • Page 62 [All Line]. Check that the icon in the output display area (see 5.1) is (single-phase three-wire system)/ (three-phase system). 2. Select the [ACV] item and then enter a numeric value. For how to enter values, see 3.3.5. DP420LS/DP480LS...

  • Page 63: Setting The Output Frequency

    3. Basic Operation -------- Notes ------------------------------------------------------------------------------------------------------------  The line voltage can be set only for the sine wave in the balanced mode. ----------------------------------------------------------------------------------------------------------------------------- 3.4.6 Setting the Output Frequency Set the AC component frequency of the internal signal source.  Operation procedure 1.

  • Page 64: Turning The Output On Or Off

    3.4.8 Turning the Output On or Off Use the OUTPUT key to turn the output on or off. The OUTPUT LED illuminates in the output on state. -------- Notes ------------------------------------------------------------------------------------------------------------  For how to turn the output on or off rapidly, see 4.21. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 65: Using The Measurement Function

    3. Basic Operation 3.4.9 Using the Measurement Function The measured values are displayed in the measured value area (see 5.1). The main measurement functions of this product are shown in Table 3-11. For details of the display items of the measured value, see 5.1.2.

  • Page 66: Switching The Display Format (Rms/Avg/Peak)Of The Measured Value

    Measuring Items to be Displayed mode (Output Voltage, Output Current) V, I, Ipk-Hold Vavg, Iavg, Ipk-Hold Peak Vmax, Vmin, Imax, Imin, Ipk-Hold  Operation procedures using soft-keys 1. Press the [Measure] soft-key and select [2:Measure]. The [Measure] window opens. DP420LS/DP480LS...
  • Page 67 3. Basic Operation 2. Select the [Type] item. In the displayed selection box, select the desired measuring mode. 3. Close the window. For how to close the window, see 3.3.4.  Operation procedures by using shortcuts Switching the display format of the measured values Press the SHIFT key to enter the shift state (the SHIFT LED illuminates).

  • Page 68: Enlarge Display Letters For The Measured Value

    The mode is toggled between normal and simple every time you perform the Shortcut operation with . You can also change the mode by following the steps below. 1. Press the [Measure] soft-key and select [1:Mode]. 2. Select 1: Normal/2: Simple. DP420LS/DP480LS...
  • Page 69 3. Basic Operation  Selecting the measured value being displayed in the Simple View mode (procedure 1) 1. In the Simple View mode, press the [Measure] soft-key and select [4:Disp Item]. The setting window for display items opens. 2. In the [Item1] to [Item3] items, select measured values to be displayed. 3.

  • Page 70: Clearing The Output Current Peak-Hold Value

    The held value is cleared when the power is turned off.  Operation procedures using soft-keys 1. Press the [Measure] soft-key and select [2:Measure]. The [Measure] window opens. DP420LS/DP480LS...
  • Page 71 3. Basic Operation 2. Move the cursor to [Exec] of the [Ipk-H Clr] item and press the ENTER key. 3. Close the window. For how to close the window, see 3.3.4.  Operation procedures by using shortcuts Clearing the current peak-hold value Press the SHIFT key to enter the shift state (the SHIFT LED illuminates).

  • Page 72: Switching The Target Phase Of Which The Measured Values Are Displayed (Polyphase System)

     In the line voltage display, the measured output power value indicates the output power of the phase when in the phase voltage display, and total output power of all phases when in the line voltage display. -----------------------------------------------------------------------------------------------------------------------------  Operation procedures using soft-keys 1. Press the [Measure] soft-key and select [2:Measure]. The [Measure] window opens. DP420LS/DP480LS...
  • Page 73 3. Basic Operation 2. In the [Target Phs] item, select the phase of which the measured value is to be displayed. For the line voltage, select L1-L2, L2-L3, or L3-L1. 3. Close the window. For how to close the window, see 3.3.4. ...

  • Page 74: Advanced Operation

    4.23 Power Unit Energization Setting (Using Under the Restricted Rated Power) ····················································· 179 4.24 Key Lock ··························································· 181 4.25 Beep ································································ 181 4.26 Changing the Background Color and the Contrast of the Screen ······························································ 182 4.27 Restoring to the Factory Default Setting (Reset) ········ 184 DP420LS/DP480LS...

  • Page 75: Using Limiter, Setting Limiter

    4. Advanced Operation Using Limiter, Setting Limiter 4.1.1 Use Peak Current Limiter Peak value of output current is limited by the peak current limiter. While the limiter is working, icon is displayed and LIMIT LED illuminates. Setting values of peak current limiter are variable, and kept independently for each of 100 V and 200 V ranges.
  • Page 76 2. In the [+Iop]/[  Iop] item, set the peak current limiter value of positive/negative. 3. Set the [Output OFF] item as [Enable] or [Disable]. When setting to [Enable], also set the time from the start of limiter operation to the output off. 4. Close the window. DP420LS/DP480LS...

  • Page 77: Using Rms Current Limiter

    4. Advanced Operation 4.1.2 Using RMS Current Limiter Effective value of output current is limited by the RMS current limiter. While the limiter is working, icon is displayed and LIMIT LED illuminates. Setting values of RMS current limiter are variable, and kept independently for each of 100 V and 200 V ranges.
  • Page 78 2. Set the value of RMS current limiter in [Io] item. 3. Set the [Output OFF] item as [Enable] or [Disable]. When setting to [Enable], also set the time from the start of limiter operation to the output off. 4. Close the window. DP420LS/DP480LS...

  • Page 79: Using Voltage Setting Range Limit

    4. Advanced Operation 4.1.3 Using Voltage Setting Range Limit For the Continuous function, when the signal source is INT, SYNC, or ADD, the range of the output voltage setting value to the internal signal source can be limited. Even if trying to set a voltage that exceeds the limit, the setting value is restricted to the limiting value.
  • Page 80 Set the voltage setting range limiting value in the [V] item (effective value setting) and [+Vop]/[  Vop] item (peak value setting). Effective Value Setting Peak value setting 3. Close the window. DP420LS/DP480LS...

  • Page 81: Using Frequency Setting Range Limit

    4. Advanced Operation 4.1.4 Using Frequency Setting Range Limit You can limit the range of the frequency setting value for the internal signal source by using the frequency setting range limit. Even if trying to set a frequency that exceeds the limit, the setting value is restricted to the limiting value.

  • Page 82: About Wattage Limiter

    Table 4-1 (reference value). While the limiter is working, icon is displayed and LIMIT LED illuminates. Table 4-1 Wattage Limiter Value per Phase (Reference value) DP420LS DP480LS Rated output Limiter Value Rated output Limiter Value （Unit：VA）...

  • Page 83: Figure 4-1 Step-Control Parameters And Intra-Step Parameters

    4. Advanced Operation  Keep a sequence setting The sequence setting is kept per AC/DC mode. Every time AC/DC mode is changed, the sequence setting that is already kept is loaded. The sequence setting is cleared when the power is turned off. To save the setting, you need to save it in internal memory or USB memory (see 4.9).

  • Page 84: Figure 4-2 Step Behavior

    Sequence function. Set these parameters beforehand using Continuous function.  Sequence function displays the measured value in Sequence function, which is equivalent to that of the Continuous function. However, harmonic current measurement (see 4.4) cannot be displayed. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 85: Parameters Of Sequence Function

    4. Advanced Operation 4.2.2 Parameters of Sequence Function Table 4-2 shows the parameters of Sequence function. The common parameters are common to one sequence. In Sequence function, signal source is fixed to INT. In each step, set the step-control parameter and the intra-Step parameter. As for intra-Step parameter, the item and range that can be set differ depending on the output range (100 V/200 V range) and output mode (AC-INT/ACDC-INT/DC-INT) as in the case of Continuous function.
  • Page 86 Determines the phase of AC waveform of L1 phase when the step starts. The phase when a step starts in L2 and L3 phase of polyphase system is the addition of the setting value of intra-Step parameter Phase and the setting value of the step Start Phase. DP420LS/DP480LS...

  • Page 87: Figure 4-3 Stop Phase

    4. Advanced Operation -------- Notes ------------------------------------------------------------------------------------------------------------  Step Start Phase setting can be disabled. In that case, the phase when the phase starts becomes the phase when the previous step ended.  In DC mode, the step Start Phase cannot be set. ----------------------------------------------------------------------------------------------------------------------------- ...

  • Page 88: Example Of Output Using Sequence Function

    (No. 4). ----------------------------------------------------------------------------------------------------------------------------- 4.2.4 Process Flow in a Step Figure 4-5 shows the process flow in one step. The transition such as Figure 4-6 occurs by branch operation or stop operation, regardless of the flow in the step. DP420LS/DP480LS...

  • Page 89: Figure 4-5 Process Flow In Sequence Step

    4. Advanced Operation Start 開始 During the specified Step Time, output is performed according to 指定のステップ時間の間，ステップ動作種別設定に従い出力 the Step Behavior setting. When If Hold operation is executed on します。途中でホールド操作が行われたら，リジューム操作 the way, output state is kept until Resume operation is executed. が行われるまで出力状態を保持します。 When step termination setting is Hold, output state is kept until ステップ終端設定がホールドなら，リジューム操作が行われ...

  • Page 90: Edit A Sequence

     Transit to Sequence Edit View Press the MENU key to open the root menu, then select [Sequence] (see 3.3.1). While the Sequence Control View is displayed, if you push the [Edit] soft-key, the execution transitions to the Sequence Edit View. Sequence icon DP420LS/DP480LS...
  • Page 91 4. Advanced Operation  Edit a sequence 1. Push [Osc] soft-key on Sequence Edit View, then select AC/DC mode and 100 V/200 V range. To edit the saved sequence, load the sequence (see 4.2.6). 2. Set the parameter of each step. You can move between each step by changing [Step No.]. Step Number PROGRAMMABLE AC POWER SOURCE...
  • Page 92 3. You can select s or ms as the unit of Step Time by selecting [Misc] soft-key  [1: TimeUnit]. 4. You can set polarity of trigger output and pulse width by selecting [Misc] soft-key  [2: Trig Out]. DP420LS/DP480LS...

  • Page 93: Load A Sequence

    4. Advanced Operation 4.2.6 Load a Sequence -------- Notes ------------------------------------------------------------------------------------------------------------  When the sequence is loaded, the sequence being edited at that time is discarded.  In Sequence Control View, a sequence cannot be loaded. -----------------------------------------------------------------------------------------------------------------------------  Load the sequence stored in the internal memory 1.
  • Page 94 3. Specify the memory number of the sequence to be loaded in [Memory No.] item, and then push [Recall] soft-key. 4. The confirmation window for loading the sequence opens. Select [OK]. The sequence with the specified memory number is loaded. DP420LS/DP480LS...
  • Page 95 4. Advanced Operation  Load the sequence stored in the USB memory For how to connect USB memory to this product, and how to disconnect from this product, see 4.9. 1. In Sequence Edit View, select [File] soft-key  [2: Recall]. Sequence Recall View is opened. 2.
  • Page 96 -------- Notes ------------------------------------------------------------------------------------------------------------  The number of sequence data files saved in a USB memory should be 500 or less. If the number of files exceeds this limit, this product cannot recognize the sequence data files in the USB memory. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 97: Execute A Sequence

    4. Advanced Operation 4.2.7 Execute a Sequence The edited sequence can be executed after converted to executable program by compile operation.  Transition to Sequence Control View When pushing [Compile] soft-key in the Sequence Edit View, the edited sequence is compiled, and then the screen transitions to Sequence Control View.
  • Page 98 Sequence Control View. At this point, the output is in the state set in the step No. 0. When a sequence is stopped, the icon is displayed. 2. When pushing [Start] soft-key, the sequence is started. While the sequence is executed, icon is displayed. DP420LS/DP480LS...
  • Page 99 4. Advanced Operation 3. When [Stop] soft-key is pushed while sequence is executed, the execution transitions to the output state that is set in the step No. 0, and then sequence is terminated. The output remains -------- Notes ------------------------------------------------------------------------------------------------------------  In the output off state, the sequence cannot be started. ...
  • Page 100 1. When pushing [Hold] soft-key while a sequence is executed, the sequence is suspended. The output state is kept while suspended. Icon is displayed. 2. To restart the sequence, push [Resume] soft-key. If you push [Stop] soft-key, the execution transitions to step No. 0 and the sequence is terminated. DP420LS/DP480LS...

  • Page 101: Save A Sequence

    4. Advanced Operation  Branch a sequence If you push [Bran1] or [Bran2] soft-key while a sequence is executing, the execution transitions to the branch step 1 or 2 that is set in the step being executed. 4.2.8 Save a Sequence -------- Notes ------------------------------------------------------------------------------------------------------------ ...
  • Page 102 3. Specify the memory number of location to save in [Memory No.] item, and then push [Store] soft-key. 4. A window to confirm the save name opens. Enter the name, and then select [OK]. For how to enter a string, see 3.3.6. DP420LS/DP480LS...
  • Page 103 4. Advanced Operation  Save a sequence to USB memory For how to connect USB memory to this product, and how to disconnect from this product, see 4.9. 1. In Sequence Edit View, select [File] soft-key  [1: Store]. Sequence Store View is opened. 2.
  • Page 104 -------- Notes ------------------------------------------------------------------------------------------------------------  The number of sequence data files saved in a USB memory should be 500 or less. If the number of files exceeds this limit, this product cannot recognize the sequence data files in the USB memory. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 105: Clear/Rename Sequence

    4. Advanced Operation 4.2.9 Clear/Rename Sequence  Clear/Rename a sequence saved in internal memory 1. In Sequence Edit View, select [File] soft-key  [1: Store]. Sequence Store View is opened. 2. In the [To] item, select [1: System]. PROGRAMMABLE AC POWER SOURCE...
  • Page 106 3. Specify the number of memory to be operated in [Memory No.] item. 4. To clear, push [Clear] soft-key. Confirmation message is displayed. Select [OK]. In the cleared number of the memory, the sequence data at factory shipment is stored. DP420LS/DP480LS...
  • Page 107 4. Advanced Operation 5. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK]. For how to enter a string, see 3.3.6.  Delete/Rename a sequence saved in USB memory For how to connect USB memory to this product, and how to disconnect from this product, see 4.9. 1.
  • Page 108 2. In the [To] item, select [2: USB]. 3. Select the data that is the target of the operation in the data list box. 4. To clear, push [Delete] soft-key. Confirmation message is displayed. Select [OK]. The corresponding file in USB memory is deleted. DP420LS/DP480LS...

  • Page 109: Set So As The Sequence Function Is Selected At Power-On

    4. Advanced Operation 5. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK]. For how to enter a string, see 3.3.6. 4.2.10 Set so as the Sequence Function is Selected at Power-on You can set so as the Sequence function is selected at power-on. ...

  • Page 110: Sequence Control By Control I/O

    -------- Notes ------------------------------------------------------------------------------------------------------------  You cannot transition to root menu by pushing the MENU key in the Sequence Control View. To transition to the root menu, first move to the Sequence Edit View and then push the MENU key. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 111: Figure 4-7 Sequence Edit View

    4. Advanced Operation  Sequence Edit View icon Step number Step-control parameter Intra-Step parameter Figure 4-7 Sequence Edit View  Sequence Control View (output off state/sequence stopped) icon Measured Value to be displayed Output setting of step No.0 Figure 4-8 Sequence Control View (Output Off State) ...

  • Page 112: Using Power Fluctuation Testing (Simulation) Function

    Trans 2, and Normal 2. After the simulation ends, this product returns to the Initial Step and stands  Step parameter Each parameter of Step Time, AC voltage, frequency, start phase, stop phase, trigger output, and synchronization output can be set for each step. However, some parameters cannot be set in some steps. DP420LS/DP480LS...

  • Page 113: Simulation Function Parameters

    4. Advanced Operation  Initial Step Initial Step is assigned to the stand-by state before the simulation starts. this product also moves to the Initial Step and becomes stand-by state after the simulation ends, except when the repeat count is specified to 0 (= infinite count).

  • Page 114: Figure 4-11 Simulation Function Steps

    Stop Phase, then performs the next step. When OFF is selected, the step transitions to the next step when the Step Time has elapsed regardless of the phase. When selecting ON, a numerical entry box in which you can specify the stop DP420LS/DP480LS...

  • Page 115: Output Examples Using Simulation Function

    4. Advanced Operation phase opens. The stop phase can be set at the Normal 1, Normal 2, and Abnormal steps. For other steps, the stop phase is fixed to OFF and cannot be specified.  Trigger output (Trig Out) State output to CONTROL I/O connector. This specifies whether the trigger output presents when the step starts.

  • Page 116: Figure 4-13 Voltage Change Simulation Example

    Step Time — 0.02 s 0.5 s AC voltage 100 V 100 V — 70 V — — Frequency 50 Hz 50 Hz — 50 Hz — — Start phase — — Stop Phase — — Repeat count 2 times DP420LS/DP480LS...

  • Page 117: Process Flow In A Step

    4. Advanced Operation 4.3.4 Process Flow in a Step Figure 4–14 shows the process flow in one step. The End operation causes the transition as shown in Figure 4–15. Start 開始 If the Start Phase is set to ON, the output starts with the set start phase. ステップ開始位相設定がオンなら，設定された開始位相から...
  • Page 118 1. In the Simulation Edit View, press the [Osc] soft-key, and then select 100 V or 200 V range. To create a new simulation from an existing one, load the existing one (see 4.3.6). 2. Set the parameter of each step. You can move between each step by changing [Step] item. DP420LS/DP480LS...
  • Page 119 4. Advanced Operation 3. You can select s or ms as the unit of Step Time by selecting [Misc] soft-key  [1: TimeUnit]. 4. You can set polarity of trigger output and pulse width by selecting [Misc] soft-key  [2: Trig Out].

  • Page 120: Loading A Simulation

     Simulation cannot be loaded in the Simulation Control View. -----------------------------------------------------------------------------------------------------------------------------  Load the simulation stored in the internal memory 1. In Simulation Edit View, select [File] soft-key  [2: Recall]. The Simulation Recall View opens. 2. In the [From] item, select [1: System]. DP420LS/DP480LS...
  • Page 121 4. Advanced Operation 3. Specify the memory number of simulation to be loaded in [Memory No.] item, and then push [Recall] soft-key. 4. The confirmation window for loading the simulation opens. Select [OK]. The simulation with the specified memory number is loaded. ...
  • Page 122 4.3 Using Power Fluctuation Testing (Simulation) Function 1. In Simulation Edit View, select [File] soft-key  [2: Recall]. The Simulation Recall View opens. 2. In the [From] item, select [2: USB]. 3. In the data list box, select the simulation to load. DP420LS/DP480LS...

  • Page 123: Executing Simulation

    4. Advanced Operation 4. Push the [Recall] soft-key. 5. The confirmation window for loading the simulation opens. Select [OK]. The specified simulation data is loaded. -------- Notes ------------------------------------------------------------------------------------------------------------  The number of simulation data files saved in a USB memory should be 500 or less. If the number of files exceeds this limit, this product cannot recognize the simulation data files in the USB memory.
  • Page 124 Simulation Control View. At this point, the output is in the state set in the Initial Step. When a simulation is stopped, the icon is displayed. 2. Press the [Start] soft-key to start the simulation. While the simulation is executed, icon is displayed. DP420LS/DP480LS...

  • Page 125: Saving Simulation

    4. Advanced Operation 3. When [Stop] soft-key is pushed while simulation is executed, the execution transitions to the output that is set in the Initial Step, and then simulation is terminated. -------- Notes ------------------------------------------------------------------------------------------------------------  In the output off state, the simulation cannot be started. ...
  • Page 126 3. Specify the memory number of location to save in [Memory No.] item, and then push [Store] soft-key. 4. A window to confirm the save name opens. Enter the name, and then select [OK]. For how to enter a string, see 3.3.6.  DP420LS/DP480LS...
  • Page 127 4. Advanced Operation  Saving the simulation in the USB memory For how to connect USB memory to this product, and how to disconnect from this product, see 4.9. 1. In the Simulation Edit View, press the select the [File] soft-key - [1: Store]. The Simulation Store View opens.
  • Page 128 -------- Notes ------------------------------------------------------------------------------------------------------------  The number of simulation data files saved in a USB memory should be 500 or less. If the number of files exceeds this limit, the product cannot recognize the simulation data files in the USB memory. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 129: Clear/Rename Simulation

    4. Advanced Operation 4.3.9 Clear/Rename Simulation  Clearing/renaming a simulation saved in internal memory 1. In the Simulation Edit View, press the select the [File] soft-key - [1: Store]. The Simulation Store View opens. 2. In the [To] item, select [1: System]. PROGRAMMABLE AC POWER SOURCE...
  • Page 130 3. Set the number of memory to be operated in [Memory No.] item. 4. To clear, push [Clear] soft-key. Confirmation message is displayed. Select [OK]. In the cleared number of the memory, the simulation data at factory shipment is stored. DP420LS/DP480LS...
  • Page 131 4. Advanced Operation 5. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK]. For how to enter a string, see 3.3.6.  Erasing/renaming a simulation saved in USB memory For how to connect USB memory to this product, and how to disconnect from this product, see 4.9. 1.
  • Page 132 2. In the [To] item, select [2: USB]. 3. Select the data that is the target of the operation in the data list box. 4. To clear, push [Delete] soft-key. Confirmation message is displayed. Select [OK]. The corresponding file in USB memory is deleted. DP420LS/DP480LS...

  • Page 133: Set So As The Simulation Function Is Selected At Power-On

    4. Advanced Operation 5. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK]. For how to enter a string, see 3.3.6. 4.3.10 Set so as the Simulation Function is Selected at Power-on You can set so as the Simulation function is selected at power-on. ...

  • Page 134: Simulation Control By Control I/O

    -------- Notes ------------------------------------------------------------------------------------------------------------  You cannot transition to root menu by pushing the MENU key in the Simulation Control View. To transition to the root menu, first move to the Simulation Edit View and then push the MENU key. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 135: Figure 4-16 Simulation Edit View

    4. Advanced Operation  Simulation Edit View icon Step Explanation diagram Repeat Step selection Step parameter Figure 4-16 Simulation Edit View  Simulation Control View (output off state, simulation stopped) icon Measured Value to be displayed Output setting of Initial Step Figure 4-17 Simulation Control View (Output Off State, Simulation Stopped) ...

  • Page 136: Measuring Harmonic Current

    If a current with many harmonic components is supplied to the power line in high volume, the line voltage is distorted, causing problems such as malfunction of devices and overheated transformer which may result in accidents. Current 電流 Voltage 電圧 Figure 4-20 Current Waveform Containing Many Harmonic Components DP420LS/DP480LS...

  • Page 137: Basics

    4. Advanced Operation 4.4.2 Basics Harmonic current measurement function is available only for the Continuous function, AC-INT, and set frequency of 50 Hz or 60 Hz. The harmonic current components up to order 40 are displayed as the RMS and a percentage to fundamental wave component.

  • Page 138: Measuring Inrush Current

    Figure 4–21 shows the inrush current waveform of a small electric drill. The inrush current flows at 14 A peak, which is about four times of the rated current of 3.5 A. Voltage 電圧 100V/div Current 電流 10A/div Figure 4-21 Inrush Current Example DP420LS/DP480LS...

  • Page 139: Basics

    4. Advanced Operation It is necessary for an electric device with a large inrush current to use a power source with a sufficient current supplying capability. With a power source that cannot supply a sufficient inrush current, some electric devices may not start as they are not supplied with necessary power. This product has the ability to supply peak current up to three times of the RMS rating.

  • Page 140: Measurement Tips

    Clip ratio = Clipped sine wave peak value/Original sine wave peak value As shown in Table 4-8, the output voltage setting method differs depending on the clip depth setting method. Therefore, a clip ratio less than 100 % makes the output voltage smaller than the setting. DP420LS/DP480LS...

  • Page 141: Table 4-8 Different Output Voltage Settings Depending On Clip Depth Setting Method

    4. Advanced Operation Table 4-8 Different Output Voltage Settings Depending on Clip Depth Setting Method Clip Depth Setting Method Output Voltage Setting Method Crest factor Sets the RMS of the clipped waveform Clip ratio Sets the RMS of the sine wave before clipping -------- Notes ------------------------------------------------------------------------------------------------------------ ...
  • Page 142 3. In the [No.] item, select the clipped sine wave to load. 4. In the [Type] item, select [1: Clip] (clip ratio) or [2: CF] (crest factor). 5. In the [CF] (or [Clip]) item, enter the crest factor (or clip ratio). DP420LS/DP480LS...

  • Page 143: Outputting Arbitrary Waveform

    4. Advanced Operation 6. To save the set content into memory, move the cursor to [Save], then press the ENTER key. 7. Move the cursor to [Close], then press the ENTER key. The clipped sine wave setting window closes. -------- Notes ------------------------------------------------------------------------------------------------------------ ...

  • Page 144: Arbitrary Waveform Creation Procedure

    2. Connect the USB memory that has the waveform data to this product. 3. Press the MEMORY key, or press the MENU key to move to the root menu and then select [Memory], to move to the Memory View. Select ARB Copy. DP420LS/DP480LS...
  • Page 145 4. Advanced Operation 4. In the [Direction] item, select [2: USB  SYS]. 5. In the [Memory No.] item, specify the transfer destination internal memory number. 6. From the data list box, select the arbitrary waveform to transfer. PROGRAMMABLE AC POWER SOURCE...
  • Page 146 8. In the [Name] item, enter the arbitrary waveform data name. Or, leave it as populated which is same as the file name in the USB memory. 9. Move the cursor to [OK], then press the ENTER key. The window is closed. DP420LS/DP480LS...

  • Page 147: Outputting Arbitrary Waveform

    4. Advanced Operation 4.7.5 Outputting Arbitrary Waveform  Operation Method 1. In the [Wave] item, select [ARB]. 2. Move the cursor to [Select], then select it. The setting window for the arbitrary waveform opens. 3. From the data list box, select the arbitrary waveform to output. PROGRAMMABLE AC POWER SOURCE...

  • Page 148: Using Memory Function

     Opening the Memory View 1. Press the MENU key to move to the root menu, then select [Memory] (or press the MEMORY key on the Continuous function screen). DP420LS/DP480LS...

  • Page 149: Basic Setting Memory

    4. Advanced Operation 2. The Memory View opens. 4.8.1 Basic Setting Memory The Basic Setting Memory collectively stores the output-related settings in the Continuous function (e.g. AC/DC mode, signal source, output range, AC setting, DC setting, current limiter, setting range limit).
  • Page 150 3. For the [To] item, select the destination [1: System] (internal memory) or [2: USB] (USB memory). 4. Specify the destination. (a) For the internal memory, specify the destination memory number in the [Memory No.] item, then press the [Store] soft-key. DP420LS/DP480LS...
  • Page 151 4. Advanced Operation (b) In the case of USB memory, push [New] soft-key to save for the first time. To overwrite the existing data, select the data to be overwritten in data list box, and push [Store] soft-key. Internal memory USB memory 5.
  • Page 152 (a) For the internal memory, specify the memory number in the [Memory No.] item, then press the [Recall] soft-key. (b) For the USB memory, in the data list box, select the data to load, then press the [Recall] soft-key. Internal memory USB memory 4. In the confirmation window that opens, select [OK]. DP420LS/DP480LS...
  • Page 153 4. Advanced Operation  Clearing, erasing, or renaming a Basic Setting Memory 1. In the Memory View, select [Setting Store]. 2. In the [To] item, select the object to operate [1: System] (internal memory) or [2: USB] (USB memory). 3. Specify the data to operate. (a) For the internal memory, specify the memory number in the [Memory No.] item.
  • Page 154 No. 0). Erasing the basic setting data in the USB memory deletes the applicable file. 5. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK]. For how to enter a string, see 3.3.6. DP420LS/DP480LS...
  • Page 155 4. Advanced Operation  Loading the factory defaults 1. In the Memory View, select [Setting Recall]. 2. In the [From] item, select [System]. 3. Push the [Factory] soft-key. In the confirmation window that opens, select [OK]. The factory default basic setting data are loaded. PROGRAMMABLE AC POWER SOURCE...

  • Page 156: Arbitrary Waveform Memory

    The paragraphs below describe how to copy the arbitrary waveform data from the internal memory to the USB memory. For how to copy from the USB memory to the internal memory, see 4.7.4. 1. In the Memory View, select [ARB Copy]. DP420LS/DP480LS...
  • Page 157 4. Advanced Operation 2. In the [Direction] item, select [SYS  USB]. 3. From the data list box, select the arbitrary waveform to copy. 4. Push the [Copy] soft-key. A window to confirm the save name opens. Enter the name. Select [OK] to copy.
  • Page 158 1. In the Memory View, select [ARB Copy]. 2. In the [Direction] item, select the object to operate. SYS  USB: Selects the internal memory as the target of the operation. USB  SYS: Selects the USB memory as the target of the operation. DP420LS/DP480LS...
  • Page 159 4. Advanced Operation 3. Select the data that is the target of the operation in the data list box. Internal memory USB memory 4. To clear/delete, push [Clear]/[Delete] soft-key. Confirmation message is displayed. Select [OK]. Clearing the internal Arbitrary Waveform Memory resets the data to triangle wave for memories from No.

  • Page 160: Sequence Memory

    Parameters of Sequence Function  SEQ Store In the Memory View, select [SEQ Store] to change to the Sequence Save View as below, allowing you to save, clear, and rename the sequence. For the operation method, see 4.2.8 and 4.2.9. DP420LS/DP480LS...

  • Page 161: Simulation Memory

    4. Advanced Operation  SEQ Recall In the Memory View, select [SEQ Recall] to change to the Sequence Recall View as below, allowing you to load the sequence. For the operation method, see 4.2.6. 4.8.4 Simulation Memory The user-created simulation can be saved in the Simulation Memory. Both the internal and USB memories can be selected as the Simulation Memory.

  • Page 162: Using Usb Memory Function

     Before removing the USB memory from this product, always perform the eject operation (see the next section). Removing the USB memory while it is being accessed may damage the data.  Do not turn off this product while it is accessing the data in the USB memory. DP420LS/DP480LS...

  • Page 163: Using Monitor Function

    4. Advanced Operation -------- Notes ------------------------------------------------------------------------------------------------------------  We do not guarantee that all USB memories can be operational with this product.  Use a FAT32-formatted USB memory. This product does not support the exFAT format which began to be supported from Windows Vista SP1. ...
  • Page 164 1. Press the MENU key to move to the root menu, then select [System]. 2. Put the cursor on [Setup] of the [Monitor] item, then press the ENTER key. 3. «Only for polyphase system» For the [Phs] item, select the desired phase. DP420LS/DP480LS...
  • Page 165 4. Advanced Operation 4. For the [Type] item, select the output voltage or current. 5. Put the cursor on [Close], then press the ENTER key. -------- Notes ------------------------------------------------------------------------------------------------------------  In a polyphase system, configure monitor setting for each of the phases using the L1 phase cabinet.

  • Page 166: Using Remote Sensing Function

     When the Remote sensing function is forcibly set to off, the settings saved in the System Setting Memory are not updated. ----------------------------------------------------------------------------------------------------------------------------- CAUTION  When setting Remote sensing to FB, the load cable connected to the output terminal should be as short as possible (3 m or less) with twisted or parallel wire. DP420LS/DP480LS...
  • Page 167 4. Advanced Operation  Cable connection for remote sensing WARNING  Before connecting the cable, turn off this product including its peripherals. CAUTION  Pay attention to the withstand voltage of the cable to be connected.  Do not connect anything to the terminals that are not used. ...
  • Page 168 3. When setting Remote sensing to ON or FB, the item symbol of the output voltage measured value is changed to "SV". -------- Notes ------------------------------------------------------------------------------------------------------------  The Remote sensing function can be set to ON / OFF / FB also in the AGC / Autocal set window. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 169: Using Agc Function

    4. Advanced Operation 4.12 Using AGC Function The AGC (Automatic Gain Control) function calculates the ratio (calibration factor) of the output voltage measured value (effective value) versus the output voltage setting value automatically and continuously while this function is on, and multiplies the gain of the output amplifier by the calculated value, intending to match the output voltage with the setting value.
  • Page 170 When the Remote sensing function is FB, the AGC function cannot be set to ON. 4. In the [AGC] item, select [2: ON]. If the output voltage setting is within the AGC operation range, the AGC calibration is started when [ON] is selected here. 5. Close the window. DP420LS/DP480LS...
  • Page 171 4. Advanced Operation  Turning off the AGC function 1. Open the AGC/Autocal set window. Following two methods are available. (a) Shortcut operation: (b) Push the [Misc] soft-key and select [1: AGC/Auto Cal]. 2. In the [AGC] item, select [1: OFF]. When [OFF] is selected here, the AGC calibration finishes. 3.

  • Page 172: Using Autocal Function

    Sequence or Simulation function is selected, the Autocal function is forcibly set to off. When the AGC function is on or Remote sensing function is FB, the Autocal function cannot be used. For the specification of the Autocal function, see 11.17. DP420LS/DP480LS...
  • Page 173 4. Advanced Operation -------- Notes ------------------------------------------------------------------------------------------------------------  When the Autocal function is on, the calibration factor is always used to perform the calibration as a multiplier.  If the conditions for setting the [Acal] to [ON] shown in 11.17 are not satisfied, the Autocal function cannot be turned on.
  • Page 174 When the Remote sensing function is FB, the Autocal function cannot be set to ON. 4. Use the [Auto Cal] item to turn on or off the Autocal function. When [ON] is selected here, the calibration factor of the Autocal function is calculated, and the calibration is started. 5. Close the window. DP420LS/DP480LS...
  • Page 175 4. Advanced Operation  Turning off the Autocal function 1. Open the Autocal set window. Following two methods are available. (a) Shortcut operation: The window is toggled between the AGC setting window and the Autocal setting window every time you press the keys. (b) Push the [Misc] soft-key and select [1: AGC/Auto Cal].

  • Page 176: Adjusting Dc Offset

    Note: The setting range is common to 100 V range and 200 V range.  Operation procedure 1. Press the [Misc] soft-key and select [2:DC Adjust]. The DC offset adjustment window opens. 2. «Only for the polyphase system» In the [Target Phs] item, specify the phase to perform the DC offset adjustment. DP420LS/DP480LS...
  • Page 177 4. Advanced Operation 3. Adjust the value in the [DC Adj] item so that the the DC offset gets close to zero while observing the output voltage with a DC voltmeter etc. 4. Close the window. PROGRAMMABLE AC POWER SOURCE...

  • Page 178: Using For Unbalanced Polyphase Output

    0.0 to 359.9 degrees for both L2 phase and L3 phase.  Operation procedure 1. Press the [Osc] soft-key and select [6: Phase Mode]. The setting window for the phase mode opens. 2. In the [Mode] item, select [1: Unbalance]. The mode is switched to the unbalanced mode. DP420LS/DP480LS...
  • Page 179 4. Advanced Operation 3. To unbalance the phase, set the phase in the [L1-L2] and [L1-L3] items. When the setting is completed, close the window. 4. To unbalance the phase voltage, press the [Osc] soft-key and select [5: Target Phs], and then select the phase to set the phase voltage.

  • Page 180: Using As Dc Power Supply

    Every time you press the keys, the mode is switched to AC, ACDC, and DC in this order. (b) Press the [Osc] soft-key and select [1:AC/DC]. From the opened menu, select [2: ACDC] or [3: DC]. 2. Set the output DC voltage in the [DCV] item. DP420LS/DP480LS...

  • Page 181: Setting Voltage Using External Dc Input Signal

    4. Advanced Operation 4.17 Setting Voltage using External DC Input Signal In the AC-VCA mode, you can use the external DC input signal to set the AC output voltage of the internal signal source. In the DC-VCA mode, you can use the external DC input signal to set the DC output voltage of the internal signal source.
  • Page 182 2. Press the [Osc] soft-key and select [2:Source]. From the opened menu, select [2: VCA]. 3. Set the [Freq], [Wave], and [Gain] items. 4. Supply a DC voltage to the external signal input connector. 5. Turn on the output. DP420LS/DP480LS...

  • Page 183: Using External Signal In Dc-Vca Mode

    4. Advanced Operation 4.17.2 Using External Signal in DC-VCA Mode In the DC-VCA mode, the setting value of the output DC voltage (DCV) is set according to the following figure, by using the gain setting value and the voltage of the external DC signal. DCV (V) = Gain x External DC signal voltage (V) For the specifications of the gain setting range and the external DC signal input voltage range, see 11.22.2.

  • Page 184: Control Using External Control Function

    The following functions can be selected. Item Description Disable Disable the control input of the CONTROL I/O. The status output signal is output (See 4.18.1). Enable Enable the CONTROL I/O (See 4.18.1). DevCtrl You can control DIP or RIN (See 4.18.2). DP420LS/DP480LS...

  • Page 185: Using Control I/O

    4. Advanced Operation 4.18.1 Using CONTROL I/O You can control the output on/off and the starting/stopping of Sequence by inputting the logic signal or the non voltage contact signal. You can also get the product state by using the logic signal. The polarity of state output can be switched.

  • Page 186: Table 4-13 Control I/O Pin Assignment

    Do not connect this pin to anything, or the product might become unstable. Table 4-14 Step sync code Step sync code High High High High Table 4-15 Memory specification Memory No. Specify Memory specification 1 Low High High Memory specification 2 Low High High DP420LS/DP480LS...
  • Page 187 4. Advanced Operation  Enabling/disabling external control function 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. In the [Ext Control] item, select [1: Disable] or [2: Enable]. See 4.18.2 about [3: DevCtrl]. ...
  • Page 188  Setting the polarity of the state output 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. In the [ExtOut Pol] item, select [1: Negative] or [2: Positive]. DP420LS/DP480LS...
  • Page 189 4. Advanced Operation  Setting the trigger output 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. Move the cursor to [Setup] next to the [Trig Out] item, and select it. The trigger output setting window opens.

  • Page 190: Control Of Dip Or Rin

     You cannot control DIP or RIN if you turn ON not setting external control function of this product to DevCtrl. After setting to DevCtrl, restart DIP or RIN. ----------------------------------------------------------------------------------------------------------------------------- ■Setting external control function to DevCtrl 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. DP420LS/DP480LS...

  • Page 191: Synchronizing The Output Frequency With The Power Line Or The External Signal

    4. Advanced Operation 2. In the [Ext Control] item, select [3: DevCtrl].  Connection of DIP or RIN Connect between the input terminal of DIP or RIN and the output terminal of this product. For detail of connection refer to the instruction manual of DIP or RIN. If the voltage drop due to wiring to DIP or RIN is large, it is possible to compensate the voltage drop by setting Remote sensing to on with using AGC / auto-cal function or setting Remote sensing to FB.
  • Page 192 3. In the [Source] item, select [Line] (power input) or [Ext] (external input signal) as the synchronization signal source. 4. When the internal signal source is synchronized with the external signal or the power line, the icon is displayed. DP420LS/DP480LS...

  • Page 193: Amplifying The External Signal Input

    4. Advanced Operation 4.20 Amplifying the External Signal Input When you select EXT for the signal source, you can output the amplified external signal. Also, when you select ADD for the signal source, you can output the amplified external signal after the internal signal is added.

  • Page 194: Turning The Output On Or Off Rapidly

     The output relay is in the off state during the wait time at power-on or after changing the power unit energization setting even if the activation of the output relay is disabled. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...
  • Page 195 4. Advanced Operation  Operation procedure 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. In the [Relay Cntrl] item, select [2:Enable] or [1:Disable]. If you select [Enable], the activation of the output relay is enabled.

  • Page 196: Enabling Automatic Output-On At Power-On

    ----------------------------------------------------------------------------------------------------------------------------- Figure 4-24 The Message Window to be Shown Before the Automatic Output-On After the Power-On DP420LS/DP480LS...
  • Page 197 4. Advanced Operation  Operation procedure 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. In the [PwON Output] item, select [2:ON] or [1:OFF]. When you select [ON], the automatic output-on at power-on is enabled.

  • Page 198: Power Unit Energization Setting (Using Under The Restricted Rated Power)

    1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. Put the cursor on the [Setup] next to the [PU-ON] item, then press the ENTER key. The power unit energization setting window opens. DP420LS/DP480LS...
  • Page 199 4. Advanced Operation 3. Enable/Disable the energization. The power unit on which the energization is enabled/disabled is represented by / respectively. Move the cursor to / and press the ENTER key to switch between  and . 4. Select [OK]. The energization is enabled or disabled and the window is closed. -------- Notes ------------------------------------------------------------------------------------------------------------ ...

  • Page 200: Key Lock

     Operation procedure 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. Use the [Beep] item to turn the beep sound on or off. DP420LS/DP480LS...

  • Page 201: Changing The Background Color And The Contrast Of The Screen

    4. Advanced Operation 4.26 Changing the Background Color and the Contrast of the Screen You can change the background color and the contrast of the liquid crystal display (LCD) screen on the panel. As the background color, you can select the blue tone or the white tone. You can also adjust the contrast in 100 steps.
  • Page 202 In this case, if other window is being displayed, that window closes and the window for adjusting LCD opens only on the cabinet on which you performed the operation. To open the previous window after adjusting LCD, close the window displayed in the L1 cabinet and reopen it. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 203: Restoring To The Factory Default Setting (Reset)

    4. Advanced Operation 4.27 Restoring to the Factory Default Setting (Reset) If you reset this product, the setting items marked with  in Table 4-17 are restored to the factory default settings. Ensure that you reset this product in the output off state. Table 4-17 Setting Items to be Reset Setting Item Reset...
  • Page 204 Simulation parameters × Output range: 100 V Step Time: 0.1 second Frequency: 50 Hz AC voltage: 0 V Start phase: Disabled, 0 deg Stop phase: Disabled, 0 deg Step sync output: LL Trigger output: Off Repeat count: Disabled 1 DP420LS/DP480LS...
  • Page 205 4. Advanced Operation  Operation procedure 1. Press the MENU key to move to the root menu, then select [System]. The system setting window opens. 2. Put the cursor on [Exec] next to the [Reset] item, then press the ENTER key. The reset operation is performed.

  • Page 206: Description Of Screen And Menu

    5. Description of Screen and Menu Screen Configuration ······································· 188 Menu Composition ·········································· 192 DP420LS/DP480LS...

  • Page 207: Screen Configuration

    5. Description of Screen and Menu Screen Configuration Figure 5–1 shows the basic screen configuration. It consists of display areas marked as "a" to "i". The description of each area is shown in Table 5-1. Figure 5-1 Component Name (Display Areas on the Screen) Table 5-1 Component Name (Display Areas on the Screen) Symbol Area name...

  • Page 208: Status Icon

    The sequence or simulation is running. 4.2.12, 4.3.12 Stand by The sequence or simulation stands by. 4.2.12, 4.3.12 Sequence suspended The sequence is suspended. 4.2.12, 4.3.12 Unadjusted Unadjusted. This icon means the abnormal — state of the product. Contact us or our agent. DP420LS/DP480LS...

  • Page 209: Measured Value Display Items

    5. Description of Screen and Menu 5.1.2 Measured Value Display Items The items displayed in the measured value area are shown in Table 5-3. Table 5-3 Measured Value Display Items Item Description Icon Represents the phase and type of the measured voltage display. Output voltage of the single-phase two-wire Phase voltage of the single-phase three-wire L1 phase Phase voltage of the single-phase three-wire L2 phase...

  • Page 210: Output Setting Display Items

    Gain of the external signal Source Synchronization signal source 5.1.4 Warning and Error Display If a warning or error occurs, an error message is displayed in the measured value area and the output display area. For details on error messages, see 9.1. DP420LS/DP480LS...

  • Page 211: Menu Composition

    5. Description of Screen and Menu Menu Composition The menu composition of this product is shown in Figure 5–2. Press the MENU key to move to the root menu. Root Continuous Sequence Simulation Memory System －Sequence Edit －Simulation Edit －Setting Store －Osc －Reset －Sequence Control...

  • Page 212: Menus Of The Sequence Function

    Branches to a step of the branch 2. It is displayed in the sequence running state. Measure Makes the measured value display settings. It is displayed in the sequence stopped state. Edit Displays the Sequence Edit View. It is displayed in the output off state. DP420LS/DP480LS...

  • Page 213: Menus Of The Simulation Function

    5. Description of Screen and Menu 5.2.3 Menus of the Simulation Function The menus of the Simulation function are shown in Table 5-7. You can open each menu by using a soft-key. For how to use the Simulation function, see 4.3. Table 5-7 Menus of the Simulation Function Menu Description...

  • Page 214: System Menus

    Disconnects the USB memory before removing it. Trig Out Makes the trigger output settings in the Sequence and the 4.2,4.3 Simulation. PU-ON Makes the power unit energization settings. 4.23 Information Displays the system information. 10.4 ExtOut Pol Specifies the external control state output polarity. 4.18.1 DP420LS/DP480LS...

  • Page 216: Remote Control

    6. Remote Control Communication Interface ·································· 198 Remote/Local State Switching ··························· 206 DP420LS/DP480LS...

  • Page 217: Communication Interface

    6. Remote Control Communication Interface This product is provided with the USB and RS232 communication interfaces as standard and is remote-controllable by a computer. Also, either GPIB or LAN communication interface can be chosen when ordering. The remote control allows almost all the operations available on the control panel to be performed.
  • Page 218 2. Put the cursor on [Setup] next to the [Remote] item, then press the ENTER key. The remote setting window opens. 3. In the [Interface] item, select [USB]. 4. The window shows [Terminator] and [USB ID]. For the USB ID, see the explanation in the next section. Select [OK] to close the window. DP420LS/DP480LS...

  • Page 219: Rs232

    6. Remote Control 5. Use a commercially available USB cable (Type A to B) to connect this product to the computer. USB connector is available on the rear of this product. -------- Notes ------------------------------------------------------------------------------------------------------------  Avoid use in a place under electrically noisy environment. ...
  • Page 220 2. Put the cursor on [Setup] next to the [Remote] item, then press the ENTER key. The remote setting window opens. 3. In the [Interface] item, select [RS232]. 4. Set each item. 5. Use a D-sub 9-pin cross cable to connect this product to the computer. The connector is on the rear of this product. DP420LS/DP480LS...

  • Page 221: Gpib

    6. Remote Control -------- Notes ------------------------------------------------------------------------------------------------------------  Avoid use in a place under electrically noisy environment.  Turn off this product and the computer before connecting or disconnecting the cable.  Binary transmission is not supported. ----------------------------------------------------------------------------------------------------------------------------- 6.1.3 GPIB The product is compliant with the GPIB IEEE Standard 488.1-1987. For the GPIB interface specifications, see 11.27.
  • Page 222  Do not set the same address as the one used for any other device connected to the same bus. Otherwise, the product cannot communicate properly.  Binary transmission is not supported.  Query for the main unit status byte using a serial poll is not supported. ----------------------------------------------------------------------------------------------------------------------------- DP420LS/DP480LS...

  • Page 223: Lan

    6. Remote Control 6.1.4 LAN For the interface specifications, see 11.27. For how to set LAN interface, refer to the Instruction Manual (Remote Control).  Operation procedure 1. Connect this product and computer with LAN cable. LAN connector is available on the rear of this product.
  • Page 224 IP, *** is displayed because it is uncertain except for MAC Address immediately after interface switching. After assignment, the display such as IP Address will be updated. Refer to the matters for IP address setting etc. For details, refer to “Instruction Manual (Remote Control)" contained in the CD-ROM. DP420LS/DP480LS...

  • Page 225: Remote/Local State Switching

    6. Remote Control MAC Address： Device-specific address (physical address). It cannot be changed. It is 8 bit delimited, hexadecimal notation. IP Address： In IP (Internet Protocol), you can check the address (logical address) for identifying the device. The range from 192.168.0.0 to 192.168.255.255 is a private IP address that you can freely use in a small local network (Class C).

  • Page 226: Options

    7. Options Remote Controller ··········································· 208 System Cable (for Polyphase System) ················ 208 Replacement Air Filter ····································· 209 Fixing Bracket ················································ 209 DP420LS/DP480LS...

  • Page 227: Remote Controller

    7. Options Remote Controller A remote controller with the numeric keypad, jog, and shuttle. It supports almost all the operations available on the main unit control panel. This option can be requested at the time of order or added after the purchase. For the remote controller operations, see the instruction manual that comes with the remote controller.

  • Page 228: Replacement Air Filter

    They can be requested at the time of order or added after the purchase. To check outline when using fixing bracket, see Figure 11-3. Table 7-3 Fixing Bracket Model Names Model name Product name PA-001-2887 Fixing Bracket PA-001-2888 Jointing Plate for 2 Units PA-001-2889 Jointing Plate for 3 Units DP420LS/DP480LS...

  • Page 230: Peripherals

    8. Peripherals Peripherals Line-up ········································· 212 Using in combination with DIP or RIN ·················· 213 DP420LS/DP480LS...

  • Page 231: Peripherals Line-Up

    61000-4-11 can be performed. In addition, "Large capacity model" is also available for IEC 61000-4-34 test. In this document, it is written as DIP. When using this product in combination with DIP, consult NF Corporation. Note: When performing the tests specified by the IEC standard, use both DIP and Immunity Test Software.

  • Page 232: Using In Combination With Dip Or Rin

    Connect between the FEEDBACK connector of DIP or RIN and the sensing input terminal of this product with the feedback cable included in DIP or RIN. Set the remote sensing function of this product to FB. (See 4.11.) DP420LS/DP480LS...
  • Page 233 8. Peripherals (b) Compensate with AGC or Auto-cal function If the voltage waveform is not distorted, the voltage drop can be compensated. When output is unstable in case a), the stabillity may be improved. Connect between the FEEDBACK connector of DIP or RIN and the sensing input terminal of this product with the feedback cable included in DIP or RIN.

  • Page 234: Troubleshooting

    9. Troubleshooting Error Messages and Error Handling ···················· 216 When a Failure is Suspected ····························· 223 DP420LS/DP480LS...

  • Page 235: Error Messages And Error Handling

    9. Troubleshooting Error Messages and Error Handling 9.1.1 Error Message Screen An error message screen opens as shown in Figure 9-1, for example, in case that the protection function is activated. The description of each item is shown in Table 9-1. Figure 9-1 Error Message Screen Example Table 9-1 Description of the Error Message Screen Symbol...

  • Page 236: If An Error Occurs Repeatedly

    If the error still exists, this product or the power unit in the product may be faulty. Repair is needed in this case. Contact the seller (NF Corporation or our agent) from whom you purchased the product. Even though one of the power units is faulty, the product can be used by disconnecting the faulty power unit and using the rest of them.

  • Page 237: Protection Operation Types

    9. Troubleshooting -------- Notes ------------------------------------------------------------------------------------------------------------  The E mark does not mean it is faulty but indicates the protection operation was activated. In some cases such as the protection operation was activated in a chain-reaction manner, the E mark may appear on a normal power unit. A power unit is judged as faulty by checking whether the error repeats or not after the power unit is restarted as described in the step 2.

  • Page 238: Error Message List

    Remote Controller Error Message Communication with the remote controller display only cannot be made. Make sure the remote controller cable is connected properly. Internal Memory Error Message The internal memory has an error. display only DP420LS/DP480LS...
  • Page 239 Calibration Data Error ME Message The adjustment data is abnormal. Cycle the display only power. If it still occurs, contact the seller (NF Corporation or our agent) from whom you purchased the product. Line Overvoltage System The power input voltage is excessive. Check Lock if the power input is appropriate.
  • Page 240 Power Unit Internal Error Output Off This is a power unit internal error. If it occurs repeatedly, contact the seller (NF Corporation or our agent) from whom you purchased the product. Limiting The active wattage limiter is activated.
  • Page 241 9. Troubleshooting Table 9-2 Error Message List (Continued) Message Protection type Cause or Necessary action Polyphase Connection Message A phase configuration is detected that is Updated display only different from the previous one. Icon The power unit or the system has not display been adjusted.

  • Page 242: When A Failure Is Suspected

    When a Failure is Suspected When a symptom occurs that suspects a failure, take an action according to Table 9-3. If it does not solve the problem, contact the seller (NF Corporation or our agent) from whom you purchased the product.
  • Page 243 9. Troubleshooting Table 9-3 Actions When a Failure is Suspected (Continued) Category Symptom Possible Cause Necessary Actions Problem at The line The signal source is not Set the signal source to SYNC and output setting synchronization set to SYNC. the external synchronization signal source to LINE.
  • Page 244 4.20 A low frequency For a frequency lower than 10 Hz, the (less than 10 Hz) measurement cycle is a fixed value and is set. thus the measured value may not be stable. DP420LS/DP480LS...
  • Page 245 9. Troubleshooting Table 9-3 Actions When a Failure is Suspected (Continued) Category Symptom Possible Cause Necessary Actions Limiter/setti The output The output current While the peak current limiter is ng range current overshoot occurred for activated, the overshoot may limitation- peak-hold value the limit value.
  • Page 246 4.1.1 Memory The memory The output is on. The output on state does not allow function- cannot be the recall. Turn the output off. related recalled. problem DP420LS/DP480LS...
  • Page 247 9. Troubleshooting Table 9-3 Actions When a Failure is Suspected (Continued) Category Symptom Possible Cause Necessary Actions Sequence/ The Sequence The output is off. Turn on the output, then start the Simulation- cannot be sequence. related started. problem The specified The Stop Phase is When the stop phase setting is Step Time is...

  • Page 248: Maintenance

    10. Maintenance 10.1 Preface ························································· 230 10.2 Daily Maintenance ·········································· 230 10.3 Storage, Repackaging, Transportation ················· 232 10.4 Checking Firmware Version ······························ 233 DP420LS/DP480LS...

  • Page 249: Preface

    10. Maintenance 10.1 Preface This chapter describes:  daily maintenance  cautions and storing for nonuse over a long period  cautions and repackaging for transportation  checking firmware version For the simple operation check, see 2.6. 10.2 Daily Maintenance This product shall be installed in a location that satisfies the installation conditions (see 2.2).
  • Page 250 3. Rinse the removed air filters with water to remove dirt and clog. Dry them completely. 4. Remount them in reverse order of steps 1 to 2. WARNING  While removing the air filters and the front grill, do not supply the power from the distribution board. Otherwise, an electric shock might occur. DP420LS/DP480LS...

  • Page 251: Storage, Repackaging, Transportation

    10. Maintenance 10.3 Storage, Repackaging, Transportation This product shall be stored in a location that satisfies the installation conditions (see 2.2).  Storage when unused for a long time  Remove the power cable from the distribution board and the product. ...

  • Page 252: Checking Firmware Version

    2. Put the cursor on [View] next to the [Information] item, then press the ENTER key. 3. The Information window opens. The firmware version is shown at the [Firmware Version] item. Note: This is a screenshot with firmware version 1.00. DP420LS/DP480LS...

  • Page 254: Specifications

    11.27 External Interface ··········································· 258 11.28 USB Memory Interface ····································· 259 11.29 Waveform Monitor Output ································· 259 11.30 Operation Environment ···································· 260 11.31 Externals, Weight, and Terminal Block ················ 261 11.32 Option ·························································· 261 11.33 Outline Dimensional Drawing ···························· 262 DP420LS/DP480LS...
  • Page 255 11. Specifications Specifications are valid under the following settings and conditions and after a warm-up period of 30 minutes at least, unless otherwise noted. Load Resistance load of power factor 1 Signal source INT (internal signal source) Output voltage waveform Sine wave Remote sensing AGC/Autocal...

  • Page 256: Output Function

    DC component temporally occurs, for example, by sudden change of voltage or phase. The signal source and amplification section of this product are DC-coupled. Only the DC setting is available. The signal sources that can be combined are INT and VCA. It is unavailable for the polyphase system. DP420LS/DP480LS...

  • Page 257: Signal Source

    11. Specifications 11.4 Signal Source Single Polyphase system Signal source INT, VCA, SYNC, EXT, ADD INT, VCA, SYNC Description Uses the internal signal source. Sets the output voltage, output waveform, frequency, output on phase, and output off phase by using the panel or the external interface such as USB. Fixed to INT in the Sequence and Simulation.

  • Page 258: Ac Output

    Output waveform sine wave, arbitrary wave (16 types), clipped sine wave (3 types) Output on phase 0.0° to 359.9° variable setting range Setting resolution 0.1° Output off phase 0.0° to 359.9° variable (active/inactive selectable) setting range Setting resolution 0.1° DP420LS/DP480LS...

  • Page 259: Current

    11. Specifications Phase angle 1P3W 1P3W setting range L2 phase: L2 phase: (Unbalanced mode) 0° to 359.9° 0° to 359.9° 3P4W 3P4W － － L2 phase: L2 phase: 0° to 359.9° 0° to 359.9° L3 phase: L3 phase: 0° to 359.9° 0°...

  • Page 260: Dc Output

    For the polyphase system, it is a specification for phase voltage setting. *20: For power input 200 V, no load, the rated output voltage, DC or 45 Hz to 65 Hz. DP420LS/DP480LS...

  • Page 261: Distortion Of Output Voltage Waveform

    11. Specifications 11.8 Distortion of Output Voltage Waveform Single Polyphase system Distortion 0.5 % or lower *21: 40 Hz to 550 Hz, 50 % or higher of the rated output voltage, the maximum current or lower, AC and AC+DC modes, THD+N. For the polyphase system, it is a specification for phase voltage setting.

  • Page 262: Measurement Function

    3P4W: 433.0 V / 866.0 V Resolution 0.1 V *25: The displayed value is the result of calculation with the phase voltage measured value and the phase angle setting value regarding the output voltage waveform as a sine wave. DP420LS/DP480LS...
  • Page 263 11. Specifications Current *26 *27 420LS 480LS Single Polyphase Single Polyphase system system Effective Full scale 560 A / 280 A 640 A / 320 A value Resolution 0.1 A (rms) Accuracy 45 Hz to 65 Hz 45 Hz to 65 Hz 45 Hz to 65 Hz 45 Hz to 65 Hz ...

  • Page 264: Power Unit Energization Setting

    For the polyphase system, match the number of energized power units for each phase. 420LS 480LS Single Polyphase Single Polyphase system system Maximum output power 6 kVA per unit Working unit number 1 to 7 1 to 8 setting range DP420LS/DP480LS...

  • Page 265: Current Limiter

    11. Specifications 11.13 Current Limiter This controls the output voltage for the output current to be within the limiter setting value when the peak value or RMS exceeds it. The output can be configured to be turned off when the limited state continues over the specified time.

  • Page 266: Setting Range Limit Function

    Setting Range Lower 1.00 Hz (AC mode : 40.00 Hz) to 550.00 Hz limit Factory default 1.00 Hz (AC mode : 40.00 Hz) Resolution 0.01 Hz *39: In the AC mode, the setting range is 40.00 Hz to 550.00 Hz. DP420LS/DP480LS...

  • Page 267: Remote Sensing

    11. Specifications 11.15 Remote Sensing This switches the voltage used for measurement. When the remote sensing is on, the sensing input terminal voltage is used. When it is off, the output terminal voltage is used. By combining with AGC or Autocal, a voltage drop due to wiring to the load can be compensated. When the remote sensing is on, the output voltage detection point corrected by the AGC or Autocal function is switched to the sensing input terminal.

  • Page 268: Agc

    (in the case of DC or 40 Hz to 550 Hz, 50 V or higher output voltage, resistance load, the output current is the maximum current or less) *42: The values of the calibration range and accuracy are the ones at the time when the Autocal is turned on. DP420LS/DP480LS...

  • Page 269: Sequence

    11. Specifications 11.18 Sequence Effective only for AC-INT, AC+DC-INT, and DC-INT. Single Polyphase system Number of memories 5 (non-volatile) Number of steps Maximum 255 (for each sequence) Setting range of Step Time 0.0010 s to 999.9999 s Intra-Step behavior Constant, Keep, Linear Sweep Parameter Output range Output range...

  • Page 270: Simulation

    Repeat count (1 to 9999 times or infinite) Initial Initial Normal1 Trans1 Abnormal Trans2 Normal2 初期 定常1 移行1 異常 移行2 定常2 初期 Trigger setting example トリガ設定例 Step sync 1 output example ステップ同期1出力例 Step sync 2 output example ステップ同期2出力例 Simulation control Start Stop DP420LS/DP480LS...

  • Page 271: Clipped Sine Wave

    11. Specifications 11.20 Clipped Sine Wave The peak clipped sine wave can be output, based on the crest factor (CF) setting or the percent setting to the peak value. Single Polyphase system Number of memories 3 (non-volatile) Variable range 1.10 to 1.41 Factory default 1.41 *45 *46...

  • Page 272: External Signal Input

    Nondestructive maximum input voltage *48: In the polyphase system, the setting is common to all the phases. *49: In the DC mode or 45 Hz to 65 Hz, the gain is the factory default, the rated output voltage, and no load. DP420LS/DP480LS...

  • Page 273: External Signal Input (Only Ext And Add)

    11. Specifications 11.22.3 External Signal Input (only EXT and ADD) This multiplies the input signal by the specified gain and outputs it. For ADD, the internal signal source is added. EXT: Output voltage (V) = External signal input (V) x Gain (V/V) ADD: Output voltage (V) = External signal input (V) x Gain (V/V) + Internal signal source setting (V) External signal input cannot be used for the polyphase system.

  • Page 274: Memory Function

    Measurement unit selection Power unit energization setting All enabled (energization) Remote sensing General function See 11.23 (excluding the time unit setting of the Step Time for the Sequence and Simulation) Monitor output target Current (L1 phase) External interface External control Disabled DP420LS/DP480LS...

  • Page 275: Self-Diagnosis/Protection Function

    11. Specifications 11.25 Self-diagnosis/Protection Function At power-on Description ROM check Checks the internal ROM. RAM check Checks the internal RAM. Basic setting Memory check Checks the Basic Setting Memory. System Setting Memory check Checks the System Setting Memory. Waveform Memory check Checks the Waveform Memory.

  • Page 276: Control I/O

    (Continuous), the Sequence Memory for the Sequence, and the Simulation Memory for the Simulation. For the Sequence and Simulation, the compile data is also included. *55: Low: 0.4 V or lower, High: 2.7 V or higher, chassis potential. *56: The polarity of items with * can be changed all together. DP420LS/DP480LS...

  • Page 277: Control Of Peripherals By Device Control

    11. Specifications 11.26.2 Control of peripherals by device control You can control DIP or RIN. Set external control function to DevCtrl and connect between CONTROL I/O connector and CONTROL IN connector of this product with the attached control cable. You can use CONTROL SIGNAL connector, QUICK CHANGE SYNC OUTPUT connector, and STATUS OUTPUT connector.

  • Page 278: Usb Memory Interface

    (V/V) Phase current 1200 (V/A) Accuracy *65 5 % Output terminal BNC connector (rear panel, unbalanced) Output impedance 600  *65: No load on the monitor output, the rated output voltage, the resistance load at the maximum current. DP420LS/DP480LS...

  • Page 279: Operation Environment

    11. Specifications 11.30 Operation Environment Single Polyphase system Operation Environment Indoor, Pollution Degree 2 Altitude 2000 m or lower Operating temperature/ 0 °C to +50 °C, 5 % to 85 %RH humidity The absolute humidity should be 1 to 25 g/m , without dew condensation.

  • Page 280: Externals, Weight, And Terminal Block

    (Type 5L, 6L cabinet) Jointing Plate for 3 Units On order and PA-001-2889 Joint 3 units and fix to the floor. after purchase (Type 5L, 6L cabinet) Types of front grills (for reference): Front grill Front grill Front grill Front grill DP420LS/DP480LS...

  • Page 281: Outline Dimensional Drawing

    11. Specifications 11.33 Outline Dimensional Drawing Figure 11-2 Outline Dimensional Drawing (DP420LS/DP480LS) PROGRAMMABLE AC POWER SOURCE...

  • Page 282: Figure 11-3 Outline Dimensional Drawing When Using Fixing Bracket For 1 Unit

    11.33 Outline Dimensional Drawing Figure 11-3 Outline Dimensional Drawing when using fixing bracket for 1 unit DP420LS/DP480LS...

  • Page 283: Figure 11-4 Outline Dimensional Drawing When Using Jointing Plate For 2 Units

    11. Specifications Figure 11-4 Outline Dimensional Drawing when using Jointing Plate for 2 Units PROGRAMMABLE AC POWER SOURCE...

  • Page 284: Figure 11-5 Outline Dimensional Drawing When Using Jointing Plate For 3 Units

    11.33 Outline Dimensional Drawing Figure 11-5 Outline Dimensional Drawing when using Jointing Plate for 3 Units DP420LS/DP480LS...

  • Page 285: Index

     Index  busy ................. 189 １ Ｃ 100 V range ............... 38 calibration ..............20 ２ CANCEL key ............26, 31 caster ..............9, 22 200 V range ............... 38 CF ............. 47, 123, 190 character string entry box .......... 33 Ａ...
  • Page 286 ........... 192 Information ............. 195, 233 MENU key ............25, 29 Initial Step ..............94 Monitor ............145, 195 inrush current ............119 Monitor function ............. 144 installation environment ..........7 monitor output connector .......... 24 INT ................35 DP420LS/DP480LS...
  • Page 287 power input terminal ..........24 Ｎ power on/off .............. 26 power switch ............. 22 Normal View ............. 49 power unit energization setting...28, 179, 189, 217 numeric keypad ........... 26, 32 protection type ............216 numerical entry box ........... 32 PU-ON ..........179, 195, 216, 217 PwOn Mode ..........
  • Page 288 ................ 65 SYNC ..............35, 172 Ｗ synchronization ..........172, 189 synchronization frequency ......... 47 System Cable ............ 14, 208 wattage limiter ..........63, 189 waveform ..............39 SYSTEM I/O connector ..........24 window ..............188 System Lock ............218 DP420LS/DP480LS...
  • Page 290 For repair service under warranty, the product must be returned to either NF or an agent designated by NF. The Purchaser shall prepay all shipping cost, duties and taxes for the product to NF from another country, and NF shall pay shipping charges to return the product to the purchaser.
  • Page 292  We assume no responsibility for influences resulting from the operations in this manual. ©Copyright 2017-2018, NF Corporation Programmable AC Power Source DP420LS/DP480LS Instruction Manual NF Corporation 6-3-20, Tsunashima Higashi, Kohoku-ku, Yokohama...
  • Page 294 NF Corporation 6-3-20, Tsunashima Higashi, Kohoku-ku, Yokohama 223-8508 JAPAN...

This manual is also suitable for:

Dp480ls

Table of Contents