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NF DP020AS Instruction Manual

Programmable ac power source
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PROGRAMMABLE AC POWER SOURCE
DP020AS
INSTRUCTION MANUAL
NF Corporation

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  • Page 1 PROGRAMMABLE AC POWER SOURCE DP020AS INSTRUCTION MANUAL NF Corporation...
  • Page 3 DA00103335-002 PROGRAMMABLE AC POWER SOURCE DP020AS INSTRUCTION MANUAL...

  • Page 5: Preface

    Preface Thank you for purchasing our Programmable AC Power Source DP020AS. Precautions” on the next For safe and correct use of the electrical product, please first read “Safety 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 6: 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 7 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 8 ⚫ 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, pay attention to the followings when you dispose of this product.  Do not discard this product in domestic household waste. This product shall be disposed of through an appropriate industrial waste disposer.

  • Page 9: Table Of Contents

    Basic Key Operations ....................31 3.3.1 Changing the Output Function (Continuous/Sequence/Simulation) ....31 3.3.2 Item Selection ..................... 31 3.3.3 Using Soft-keys ....................32 3.3.4 Closing Windows ....................33 3.3.5 Entering Values ....................33 3.3.6 Entering Strings (Character String Entry Box) ............ 34 DP020AS...
  • Page 10 3.3.7 Using Shortcut Operations (SHIFT Key and RECALL key) ......... 34 Setting Master/Slave ....................36 3.4.1 Opening the Master-Slave Setting Window ............36 3.4.2 Setting Master/Slave ................... 37 3.4.3 When differs from the connection of the system cable ........38 Setting the Output Phase Configuration ..............
  • Page 11 Saving, Recalling, and Clearing/Renaming of Basic Setting Memory ....124 4.8.4 Arbitrary Waveform Memory ................128 4.8.5 Sequence Memory .................... 132 4.8.6 Simulation Memory ................... 133 Using USB Memory Function ................... 134 4.10 Saving a Screenshot ....................135 4.11 Using Monitor Function .................... 136 DP020AS...
  • Page 12 4.12 Using Remote Sensing Function ................138 4.13 Using AGC Function ....................140 4.14 Using Autocal Function ..................... 143 4.15 Adjusting DC Offset ....................146 4.16 Using for Unbalanced Polyphase Output ..............148 4.17 Using as DC Power Supply ..................149 4.18 Setting Voltage or Current using External DC Input Signal ........
  • Page 13 10.13 Power Input ......................234 10.14 Withstand Voltage and Insulation Resistance ............234 10.15 Measurement Function ..................... 235 10.16 Current Limiter (CV mode) ..................238 10.17 Voltage Limiter (CC mode) ..................239 10.18 Setting Range Limit Function ................... 239 DP020AS...
  • Page 14 10.18.1 Voltage Setting Limit Function (CV mode) ............240 10.18.2 Current Setting Limit Function (CC mode) ............240 10.18.3 Frequency Setting Limit Function..............241 10.19 Remote Sensing ....................... 242 10.20 AGC .......................... 242 10.21 Autocal (Output Voltage Compensation) ..............243 10.22 Sequence .........................

  • Page 15: List Of Figures

    Figure 4-8 Sequence Control View (Output Off State) ............. 91 Figure 4-9 Sequence Control View (Output On State/Sequence in Execution) ....... 91 Figure 4-10 Sequence Control View (Output On State/Sequence Stopped) ......92 Figure 4-11 Simulation Function Steps ..................95 DP020AS...
  • Page 16 Figure 7-4 Assembly Diagram (Rack-mount Adapter [mm]) ........... 199 Figure 7-5 Front Grills ......................200 Figure 8-1 Error Message Screen Example ................202 Figure 10-1 Maximum system configuration *1 ..............223 Figure 10-2 Range of Ambient Temperature/Humidity ............257 Figure 10-3 DP020AS ......................259 PROGRAMMABLE AC POWER SOURCE...
  • Page 17 Table 4-16 CV/CC Mode, High Impedance Output Off, and Output Relay Control ....162 Table 4-17 Setting Items to be Reset ..................170 Table 5-1 Component Name (Display Areas on the Screen) ..........176 Table 5-2 Status Icons ......................177 Table 5-3 Measured Value Display Items ................178 DP020AS xiii...
  • Page 18 Table 5-4 Output Setting Display Items .................. 179 Table 5-5 Menus of the Continuous Function ................. 180 Table 5-6 Menus of the Sequence Function ................181 Table 5-7 Menus of the Simulation Function ................182 Table 5-8 Menus of the Memory Function ................182 Table 5-9 System Menus ......................

  • Page 19: Outline

    1. Outline Overview ·························································· 2 Features ··························································· 2 DP020AS...

  • Page 20: Overview

    1. Outline Overview The programmable AC power source DP020AS is a single-phase 2 kVA AC / 2 kW DC stabilized power source that can flexibly configure boost-up and polyphase system, and can switch between constant voltage output (hereinafter referred to as CV) and constant current output (hereinafter referred to as CC).
  • Page 21  Data logging (importing the measured values)  Editing/transferring/exporting* /performing Sequence  Editing/transferring/exporting* /performing Simulation *Exporting the data to USB memory allows the data to be set to DP020AS. The control software can be downloaded from the support page of our website. https://www.nfcorp.co.jp/english/...
  • Page 22 1. Outline ◼ USB memory support (supported format type: FAT32) User can write/read the following data to/from a commercial USB memory stick:  Basic setting  Sequence  Simulation  Arbitrary waveform ◼ Restriction of power usage The efficiency is improved by about 30 % compared to the linear amplifier method by adopting the switching amplifier method.

  • Page 23: Preparation Before Use

    Check before Use ··············································· 6 About Installation Environment ······························ 7 Cautions during Moving and Transportation ············· 8 Grounding and Power Connections ························ 9 Output, Sensing, and System Cable Connections ···· 12 Simple Operation Check ···································· 22 Calibration ······················································· 23 DP020AS...

  • Page 24: 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, or dial of the control panel, or rear connectors.

  • Page 25: About Installation Environment

    ⚫ Do not place it in front or back of the other (arrangement which makes the unit placed behind inhale the exhaust heat of the other). ⚫ A total of up to three units of only DP020AS can be stacked. ⚫ When building a multi-unit system by connecting multiple units together, there is no constraint regarding the order in which units are arranged.

  • Page 26: Cautions During Moving And Transportation

    ⚫ Before removing the wiring, be sure to turn off this product to cut the power from the distribution board. Otherwise, an electric shock might occur. ◼ Check before movement and transportation ⚫ Check the weight before moving the product. The mass of DP020AS is approximately 20 kg. PROGRAMMABLE AC POWER SOURCE...

  • Page 27: Grounding And Power Connections

    ◼ Check the power source For safety, use the product in the ranges of input voltage and frequency described below. Voltage range: Single-phase 100 to 230 V Frequency range: 50 Hz/60 Hz DP020AS...

  • Page 28: Table 2-2 Maximum Power/Current Consumption

    2. Preparation before Use ◼ About power input terminal The power input terminal screws are M5. ◼ About power cable Use a cable of sufficient ampacity for the maximum current consumption (see Table 2-1). A protective grounding cable should have ampacity higher than or equal to the power cable. For the optional power cable, see 7.4.

  • Page 29: Figure 2-1 Power Input Connection

    CAUTION ⚫ Be sure to check phases L and N are correctly connected between this product and the distribution board. ～ LINE 電源入力端子 Power input terminal 分電盤 Distribution board Protective grounding 保護接地 Figure 2-1 Power Input Connection DP020AS...

  • Page 30: Output, Sensing, And System Cable Connections

    2. Preparation before Use Output, Sensing, and System Cable Connections ◼ Before connecting, check the followings. WARNING ⚫ Before touching the output terminal, be sure to turn off the power switch of this product, and cut the power to the distribution board. Otherwise, an electric shock might occur. CAUTION ⚫...

  • Page 31: Single Output

    ⚫ The output terminal that can be grounded is the Lo terminals. Do not ground the Hi terminal. ⚫ If you want to ground the output terminal at one point only, ground either one of the output terminal or load terminal. 3. Attach the resin-molded terminal cover. DP020AS...
  • Page 32 2. Preparation before Use WARNING ⚫ Do not use this product when the resin-molded terminal cover is removed. Otherwise, an electric shock might occur. ⚫ Use enough thick cables to prevent touching live conductive parts after attaching the resin -molded terminal cover.

  • Page 33: Multi-Unit System

    Phase master Master of the L2 phase or L3 phase that operates with a control signal from the system master Slave Booster Unit for expanding the output capacity of the phase master -------- Notes ---------------------------------------------------------------------------------------------------------------- ⚫ For the procedure to set each unit to a master unit or slave unit, see 3.4. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 34: Figure 2-5 Maximum System Configuration

    2. Preparation before Use ◼ System configuration A polyphase system (single-phase three-wire system or three-phase four-wire system) can be built by installing one or two phase masters for one system master unit. Boost up (parallel operation) of up to two units per phase is possible. In addition, the system can be used as a single-phase two-wire system by outputting with all phases set as the same phase.
  • Page 35 2.5 Output, Sensing, and System Cable Connections -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ Only DP020AS can be connected. ⚫ Turn on the power of all units within the set time. (Time set by default: 10 seconds; see 3.4.2.) ⚫ Make sure that the number of boosters of each phase is the same. If the number differs, an error will occur and output will not be possible.

  • Page 36: Table 2-4 Number Of Units In System Configuration And Combinations

    2. Preparation before Use ◼ Number of units in configuration The relationship between the system phase configuration and the number of units in the system configuration is as shown in Table 2-4. There are cases in which there are two combinations. Operation is possible with either of the combinations.

  • Page 37: Figure 2-6 Connecting Outputs Of Two Units Using 1P2W

    (b) When not connecting the load with the neutral line (3P3W connection) Connect between the Lo terminals of each unit by a cable which is as short and thick as possible (with a diameter equal to or more than that of the voltage line). DP020AS...

  • Page 38: Figure 2-7 1P3W System Connection

    ⚫ When operating in CC mode with a polyphase system, connect the neutral point (Lo terminal) to the load. If the neutral point (Lo terminal) is not connected, the product may not operate properly. --------------------------------------------------------------------------------------------------------------------------------- OUTPUT OUTPUT Load 負荷 DP020AS 1P3W system 1P3W load DP020AS単相3線システム 単相3線負荷 (Cabinet ground terminal) （筐体接地端子） Figure 2-7 1P3W System Connection...
  • Page 39 ◼ Grounding of output terminal When grounding the Lo terminal of a multi-unit system, ground at the one point of either the output terminal or load terminal of one of the units. DP020AS...

  • Page 40: Simple Operation Check

    2. Preparation before Use Simple Operation Check This section describes how to perform a simple operation check when you purchased a new product, or after storing the product for a long period. This check should be performed without load. For a multi-unit system, remove the system cable, and check the single-phase output for each unit.

  • Page 41: Calibration

    AC voltage (ACV). Raise the AC voltage setting value gradually by using the MODIFY dial, arrow keys, or numeric keypad, and check that the measured voltage value (V) has become about the same as the setting value. Calibration When the product needs calibration, contact us or our agent. DP020AS...

  • Page 43: Basic Operation

    3. Basic Operation Component Name ············································· 26 Power On/Off ··················································· 29 Basic Key Operations ········································ 31 Setting Master/Slave ········································· 36 Setting the Output Phase Configuration ················· 39 Using the Continuous Function ···························· 40 Setting the CV/CC Mode ···································· 61 DP020AS...

  • Page 44: Component Name

    3. Basic Operation Component Name 3.1.1 Front 3. Control panel 3. 操作パネル 1. USB memory 1. USB メモリコネクタ connector 4. Power 4. 電源スイッチ switch 2. Front grill 2. フロントグリル Figure 3-1 Component Name (Front) Table 3-1 Component Name (Front) Number Name Description Refer to...

  • Page 45: Control Panel

    6.1.1 SYSTEM connector Used to connect an optional system cable to 2.5.2 build a multi-unit system with multiple DP020AS units. Monitor output connector Can observe waveforms of the output voltage 4.11 and output current when connected to a unit such as oscilloscopes.

  • Page 46: Table 3-3 Component Name (Control Panel)

    3. Basic Operation Table 3-3 Component Name (Control Panel) Number Name Description Refer to OUTPUT key Turns the output on or off. 3.6.11 OUTPUT LED The LED illuminates in the output on state. LIMIT LED Illuminates when any of the limiters activates.

  • Page 47: Power On/Off

    1. The “NF” logo mark is displayed for a few seconds or more than 10 seconds. 2. The self check is performed and the result is displayed. If there was a problem with the result or if the multi-unit system connection has changed, the startup process halts at the Self-Test screen shown in Figure 3-4.

  • Page 48: The Settings Loaded After Startup

    3. Basic Operation 4. If the output function selection is set to the Continuous function and the output-on at power-on setting is on, the output is turned on after the confirmation message to inform that the output is automatically turned on is displayed for about 10 seconds. If you press the ENTER key while this message is displayed, you can cancel the setting of automatic output-on.

  • Page 49: Basic Key Operations

    ◼ Selection box If the menu has numbers before its menu items as shown in Figure 3-7 (selection box), pressing the corresponding number on the numeric keypad also selects and runs the item. Figure 3-7 The Example of a Selection Box DP020AS...

  • Page 50: Using Soft-Keys

    3. Basic Operation ◼ Data list box When selecting data in the memory, the data list box shown in Figure 3-8 is displayed. Use the arrow keys, numeric keypad, or Memory No. box to select data in the data list box, and press the ENTER key.

  • Page 51: Closing Windows

    Press the ENTER key to confirm the value. The previous values for the voltage or frequency output are held until you press the ENTER key. If you press the CANCEL key, the settings are not changed. Figure 3-13 The Numerical Entry Box DP020AS...

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

    3. Basic Operation -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ If you already know the value to set, the direct entry using the numeric keypad will be convenient. ⚫ If you want to increment/decrement the value by one step at one time, use the up and down arrow key. ⚫...

  • Page 53: Table 3-5 Shortcut Operations

    Recalls the basic settings of the corresponding RECALL number saved in internal memory. Note 1: If you change the item presented with † symbol using a Shortcut operation, the setting is not saved in the System Setting Memory (see 10.28). DP020AS...

  • Page 54: Setting Master/Slave

    3. Basic Operation Setting Master/Slave Set master or slave for each unit that makes up the multi-unit system. 3.4.1 Opening the Master-Slave Setting Window When building a multi-unit system, enable the master/slave function. 1. Press the MENU key from the Continuous function to move to the root menu, and then select [System].

  • Page 55: Setting Master/Slave

    ⚫ It takes approximately 3 seconds for the settings to be saved internally. Wait at least 3 seconds before turning the power off after setting completes. ⚫ The output phase configuration at first startup after the master/slave setting will be that marked with an asterisk (*) in Table 2-4 (see 2.5.2). --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 56: When Differs From The Connection Of The System Cable

    3. Basic Operation Table 3-6 Master/Slave Settings when 9 Units Connected System master Type Master System master Phase Master L2&L3 L2 phase master L3 phase master (L1 phase master) Booster Booster 1 Booster 1 Booster 1 Booster 2 Booster 2 Booster 2 Phase master and booster 1 Type...

  • Page 57: Setting The Output Phase Configuration

    1. Open the Master-Slave setting window and select the output phase configuration in the [OutPhs Mode] item. 2. Move the cursor to [Exec], then press the ENTER key. 3. When the screen switches to the following screen, turn off the power and change the wiring (output cable and sensing cable). DP020AS...

  • Page 58: Using The Continuous Function

    3. Basic Operation Using the Continuous Function 3.6.1 Setting the AC/DC Mode and the Signal Source The description of the AC/DC mode is shown in Table 3-7. The description of the signal source is shown in Table 3-8. The selectable combinations of the AC/DC mode and the signal source are shown in Table 3-9.

  • Page 59: Table 3-7 Description Of The Ac/Dc Mode

    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. For other than 1P2W, the setting is possible only for 1P3W in CV mode. DP020AS...

  • Page 60: Table 3-8 The Description Of The Signal Source

    3. Basic Operation Table 3-8 The Description of the Signal Source Signal source Description Uses the internal signal source. Sets the output voltage or output current, output waveform, frequency, output on phase, and output off phase by using the panel or the external interface such as USB.

  • Page 61: Table 3-9 List Of The Selectable Combinations Of The Ac/Dc Mode And The Signal Source

    *1: In CC mode, ACHF cannot be set. In addition, in CC mode with a polyphase system, only AC can be set. *2: The DC voltage cannot be set in the ACDC of 3P4W. ◼ Operation procedures using soft-keys 1. Press the [Osc] soft-key and select [AC/DC]. 2. In the displayed selection box, select the desired AC/DC mode. DP020AS...
  • Page 62 3. Basic Operation 3. Press the [Osc] soft-key and select [Source]. 4. In the displayed selection box, select the desired signal source. ◼ Operation procedures by using shortcuts Switching the AC/DC mode 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, ACHF, ACDC, DC, AC.

  • Page 63: Setting The Output Range

    Peak voltage limiter (positive) Peak voltage limiter (negative) See 10.17 RMS voltage limiter Current setting limit See 10.18.2 Note: This is the setting range for a single unit. For the setting range for a multi-unit system, see10.8.1, 10.8.2, 10.26.2. DP020AS...
  • Page 64 3. Basic Operation ◼ Operation procedures using soft-keys 1. Press the [Osc] soft-key and select [Range]. 2. In the displayed selection box, select the desired output range. ◼ Operation procedures using the RANGE key The range is toggled between 100 V range and 200 V range every time you press the RANGE key. PROGRAMMABLE AC POWER SOURCE...

  • Page 65: Setting Waveforms

    ARB. Set ACVs for SIN, CLP, and ARB in the output off state before you change the waveform in the output on state. --------------------------------------------------------------------------------------------------------------------------------- ◼ Operation procedure 1. Select the [Wave] item. 2. In the displayed selection box, select the desired waveform (SIN, CLP, ARB). DP020AS...

  • Page 66: Setting The Output Voltage (Single-Phase Output)

    3. Basic Operation 3. If you select CLP or ARB, the [Setup] icon ( ) is displayed next to it. When you hover the cursor over the [Setup] icon, the clip ratio or crest factor is displayed for the clipped sine wave, or the arbitrary waveform data name for the arbitrary waveform.

  • Page 67: Setting The Output Voltage (Polyphase Output)

    1. Press the [Osc] soft-key to open the OSC Setup screen. Select major item OSC → minor item Target Phs → 1: Phs. 2. Press the [Home] soft-key to open the Home screen. Select the [L1-N] item and then enter a numeric value. For how to enter values, see 3.3.5. Confirm that L1-N. DP020AS...
  • Page 68 3. Basic Operation -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ With a 1P3W system, the DC components can be set. The value of DCVLN becomes the DC component between L1-N. The value obtained by multiplying DCVLN by -1 becomes the DC component between L2-N. Even in UNBALANCE mode, DCVLN cannot be set separately for L1-N and L2-N.

  • Page 69: Setting The Output Current (Single Phase Output)

    In the balanced mode, the phase current is set for all phases at once. To enter the balanced mode, press the [Osc] soft-key and open the phase mode setting window by selecting major item OSC → minor item PhsMode, and then select [1: BAL]. For details on the unbalanced mode, see 4.16. DP020AS...

  • Page 70: Setting The Output Frequency

    3. Basic Operation ◼ Operation procedure Select the [L1] item and then enter a numeric value. For how to enter values, see 3.3.5. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ With a polyphase system, setting of DC is not possible. --------------------------------------------------------------------------------------------------------------------------------- 3.6.8 Setting the Output Frequency Set the AC component frequency of the internal signal source.

  • Page 71: Setting Soft Start And Soft Stop

    When the output off operation is performed during a soft start, a soft stop is implemented over the set time from the output at that point in time. (See Figure 3-16.) Also, if the output off operation is performing during a soft stop, output becomes 0 instantly. DP020AS...

  • Page 72: Figure 3-16 Output Off Operation During Soft Start

    3. Basic Operation Off operation Voltage or current setting value On operation Output 0 Soft start time Soft stop time Figure 3-16 Output Off Operation during Soft Start Off operation Voltage or current setting value Off operation Output 0 Soft stop time Figure 3-17 Output Off Operation during Soft Stop -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫...

  • Page 73: Table 3-12 Output On/Off Phase And Soft Start / Soft Stop Setting Icons

    1. Check that in the state of not meeting the conditions in the notes above. 2. Press the [Osc] soft-key and select [Soft Start] or [Stop]. The output on/off phase setting window opens. 3. Set each of soft start in the [Soft Start] item and soft stop in the [Soft Stop] item. DP020AS...

  • Page 74: Turning The Output On Or Off

    3. Basic Operation 3.6.11 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. When soft stop is enabled, even if the output off operation is performed with the OUTPUT key, output continues for the soft stop period (while decreasing).

  • Page 75: Switching The Display Format (Rms/Pk/Avg) Of The Measured Value

    RMS → AVG → Peak → RMS. Some display formats may be skipped and cannot be selected depending on the CV/CC mode, output phase configuration, and AC/DC mode. DP020AS...

  • Page 76: Clearing The Peak-Hold Value

    3. Basic Operation 3.6.14 Clearing the Peak-hold Value The peak-hold value is the maximum absolute value of the measured peak value, which is then updated appending signs and held. The current peak value is held in CV mode, and the voltage peak value in CC mode.

  • Page 77: Switching The Target Phase Of Which The Measured Values Are Displayed (Polyphase Output)

    ⚫ In the line voltage display, the measured output current value indicates the phase current. ⚫ In the line voltage display, the power factor and crest factor are not displayed. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...
  • Page 78 3. Basic Operation ◼ Operation procedures using soft-keys 1. Push the [Meas] soft-key. The [Meas Setup] window opens. 2. In the [Target Phs] item, select the phase of which the measured value is to be displayed. 3. Close the window. For how to close the window, see 3.3.4. ◼...

  • Page 79: Setting The Cv/Cc Mode

    2. In the [Output Mode] item, select [CV] or [CC]. 3. The Continuous view with CV/CC switched is redisplayed. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ When switching CV/CC with the sequence function, set the function to the Continuous function first before switching. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 81: Advanced Operation

    4.24 Enabling Automatic Output-On at Power-On ··············· 163 4.25 Key Lock ····························································· 164 4.26 Beep ·································································· 164 4.27 Changing the Screen Brightness ······························ 165 4.28 Using the Shutdown Function ·································· 167 4.29 Setting the Date and Time ······································ 168 4.30 Restoring Initial Settings ········································ 170 DP020AS...

  • Page 82: Using Limiter, Setting Limiter

    4. Advanced Operation Using Limiter, Setting Limiter 4.1.1 Using Peak Limiter When CV mode, the peak value of output current is limited by the peak current limiter. While the limiter is working, the icon is displayed and LIMIT LED illuminates. Setting values of limiter are variable, and kept independently for each of 100 V and 200 V ranges.
  • Page 83 Note: The view is when in CV mode. 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. Note: The view is when in CV mode. DP020AS...

  • Page 84: Using Rms Limiter

    4. Advanced Operation 4.1.2 Using RMS Limiter In CV mode, the effective value of output current is limited by the RMS current limiter. While the limiter is working, the icon is displayed and LIMIT LED illuminates. Setting values of limiter are variable, and kept independently for each of 100 V and 200 V ranges.
  • Page 85 Note: The view is when in CV mode. 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. Note: The view is when in CV mode. DP020AS...

  • Page 86: Using Setting Range Limit

    4. Advanced Operation 4.1.3 Using Setting Range Limit You can limit the ranges of output setting values (output voltage in CV mode or output current in CC mode and frequency). A setting range limit is useful for the prevention of an excessive output when the output setting value is rapidly increased or decreased with the MODIFY dial.
  • Page 87 ⚫ The Sequence and the Simulation function do not include the setting range limiting function. ⚫ A setting range limit that does not include an output voltage or output current already set cannot be set. ⚫ In a polyphase system, the setting range limit is common to all phases. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...
  • Page 88 4. Advanced Operation c) 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 89: About Wattage Limiter

    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). ◼ Step One sequence consists of a series of two or more steps. To use Sequence function, first set each step. DP020AS...

  • Page 90: Figure 4-1 Step-Control Parameters And Intra-Step Parameters

    4. Advanced Operation ◼ Step-control parameters and --Step parameters There are the following two major types of parameters in Sequence function: ⚫ Step-control parameter Parameter to control the flow between two or more steps. These parameters determine the step duration time and the next step. Settings of step synchronous code and trigger output are included in step-control parameter for convenience.

  • Page 91: Parameters Of Sequence Function

    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. This section describes intra-Step parameters and step- control parameters separately. DP020AS...

  • Page 92: Table 4-1 Parameters Of Sequence Function

    4. Advanced Operation Table 4-1 Parameters of Sequence Function Common parameter Step control parameters Intra-Step Parameter Output range Step Time Frequency CV/CC mode Specification of the Jump-to step Waveform AC/DC mode Jump count (1 to 9999, or infinite) Phase angle Specification of the branch step AC phase voltage Step termination...
  • Page 93 -------- 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, the step Start Phase cannot be set. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 94: Figure 4-3 Stop Phase

    4. Advanced Operation ◼ Stop Phase (Stop Phs) Determines the phase of AC waveform when the step ends. The phase when a step ends 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 Stop Phase.

  • Page 95: 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. DP020AS...

  • Page 96: Figure 4-5 Process Flow In Sequence Step

    4. Advanced Operation 開始 Start 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 During the specified Step Time, output is performed according to 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 Step Behavior setting. When If Hold operation is executed on が行われるまで出力状態を保持します。 the way, output state is kept until Resume operation is executed. 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 97: Edit A Sequence

    Control View is displayed, if you push the [Edit] soft-key, the execution transitions to the Sequence Edit View. Sequence icon ◼ 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 4.2.7). DP020AS...

  • Page 98: Displaying Data List View Of Sequence Memory

    4. Advanced Operation 2. Set the parameter of each step. You can move between each step by changing [Step No.]. Also, even if the cursor is not on the [Step No.] item, you can move to the previous step by pressing , and to the next step by pressing PREV NEXT...
  • Page 99 ⚫ You can also open Sequence Memory View by pressing the menu key to move to the root menu and then selecting Memory → Sequence Memory (see 4.8.5). In this case, pressing the [Exit] soft-key returns to Memory View. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 100: Load A Sequence

    4. Advanced Operation 4.2.7 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. ⚫ For how to connect USB memory to this product, and how to disconnect from this product, see 4.9.

  • Page 101: Execute A Sequence

    1. If output is turned off in the Sequence Edit View, the sequence can be executed when output is turned on in the 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. DP020AS...
  • Page 102 4. Advanced Operation 2. When pushing [Start] soft-key, the sequence is started. While the sequence is executed, the icon is displayed. 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 on. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫...

  • Page 103: Save A Sequence

    4.2.9 Save a Sequence -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ In Sequence Control View, a sequence cannot be saved. ⚫ All sequence data that are edited in each mode of AC/DC mode are saved as one memory number/file by one save operation. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...
  • Page 104 4. Advanced Operation ◼ Save a sequence to internal memory 1. Open Data List View of sequences (see 4.2.6). Select the [Target] and [Memory No.] items and specify the sequence to save, then press the [Store] soft-key. Specify memory Internal memory 1: System number 2.

  • Page 105: Clear/Rename Sequence

    ◼ Clear/Rename a sequence saved in internal memory 1. Open Data List View of sequences (see 4.2.6). Select the [Target] and [Memory No.] items and specify the sequence to clear or rename. Specify memory Internal memory [1: System] number DP020AS...
  • Page 106 4. Advanced Operation 2. 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. 3. 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.

  • Page 107: Set So As The Sequence Function Is Selected At Power-On

    4.2.11 Set so as the Sequence Function is Selected at Power-on You can set so as the Sequence function is selected at power-on. ◼ Operation procedure 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens. DP020AS...

  • Page 108: Sequence Control By Control I/O

    4. Advanced Operation 2. In the [PwOn Mode] item on page 2 of the system setting window, select [2: Sequence]. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ To set so as to Continuous function is selected at power-on, select [1: Continuous] in [PwOn Mode] item.

  • Page 109: Figure 4-7 Sequence Edit View

    Output setting of step No.0 Figure 4-8 Sequence Control View (Output Off State) ◼ Sequence Control View (output on state/sequence in execution) Icon while suspended) Measured Value displayed Output setting of executing step Figure 4-9 Sequence Control View (Output On State/Sequence in Execution) DP020AS...

  • Page 110: Change Output Parameter During Output On

    4. Advanced Operation ◼ Sequence Control View (output on state/sequence stopped) Icon Measured Value to be displayed Output setting of step No.0 Figure 4-10 Sequence Control View (Output On State/Sequence Stopped) 4.2.14 Change Output Parameter during Output ON Frequency and voltage of step No.0 can be changed on Sequence Edit View and it can be used like Continuous output function.
  • Page 111 ⚫ When the AC/DC mode is changed, Remote Sensing and Autocal settings are first turned off. Turn ON it again when you need. ⚫ If changing setting by sequence memory recall or memory clear, the screen display will be changed, but the output will be applied after compile. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

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

    The output by the Simulation function consists of six types of steps: Initial, Normal 1, Trans 1, Abnormal, Trans 2, and Normal 2. Before the simulation starts, the DP020AS stands by at the Initial Step. During the simulation, the step changes in the order of Initial, Normal 1, Trans 1, Abnormal, Trans 2, and Normal 2.

  • Page 113: Simulation Function Parameters

    V1, F1 V1, F1 Voltage and 電圧・周波数は frequency are 正常1と同じ V3, F3 same as Normal 1 移行1 異常 移行2 定常2 Trans 1 Abnormal Trans 2 Normal Normal 1 定常1 Trigger output トリガ出力 Synchronization 同期出力 output Figure 4-11 Simulation Function Steps DP020AS...

  • Page 114: Table 4-4 Simulation Function Steps And Settable Step Parameters

    4. Advanced Operation Table 4-4 Simulation Function Steps and Settable Step Parameters Step Initial Normal 1 Trans 1 Abnormal Trans 2 Normal 2 Step Time – AC voltage – – – (=1) Frequency – – – (=1) ON/OFF ON/OFF ON/OFF ON/OFF Start Phase –...

  • Page 115: Output Examples Using Simulation Function

    The simulation in a series is repeated for the repeat count + 1. Setting the repeat count to zero (0) means an infinite count. When Repeat is set to OFF, the DP020AS executes the simulation only once and finishes it without performing the repeat operation.

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

    4. Advanced Operation ◼ Voltage change simulation In this simulation, the 50 Hz 100 V power source repeats the voltage change three times at 10 -second intervals, while the voltage drops to 70% and then linearly recovers in 0.5 seconds during one cycle as shown in Figure 4-13.

  • Page 117: Process Flow In A Step

    ⚫ When a simulation is loaded from memory, the simulation you are editing is discarded. ⚫ You can also turn on output on the Simulation Edit View. At this point, output will be the value set in the initial step. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...
  • Page 118 4. Advanced Operation ◼ Transition to Simulation Edit View Press the MENU key to open the root menu, then select [Simulation] (see 3.3.1). While the Simulation Control View is displayed, if you push the [Edit] soft-key, the execution transitions to the Simulation Edit View.

  • Page 119: Opening Data List View Of Simulation Memory

    4.3.6 Opening Data List View of Simulation Memory You can access this product's internal memory and USB memory to save, recall, clear, and rename simulations. ◼ Displaying saved simulations 1. In Simulation Edit View, select [File] on soft-key page 2. Simulation Memory View opens. DP020AS...
  • Page 120 4. Advanced Operation 2. The simulation memory data list appears. For the [Target] item, select the destination [1: System] (internal memory) or [2: USB] (USB memory). 3. Specify the memory number to reference in the [Memory No.] item. Even if the cursor is not on the [Memory No.] item, you can move to the previous number by pressing , and to the next number by pressing PREV NEXT...

  • Page 121: Loading A Simulation

    [Recall] soft-key. Specify memory Internal memory [1: System] number USB memory [2: USB] 2. The confirmation window for loading the simulation opens. Select [OK]. The simulation with the specified memory number is loaded. DP020AS...

  • Page 122: Executing Simulation

    4. Advanced Operation 4.3.8 Executing Simulation The edited simulation can be executed after converted to executable program by compile operation. ◼ Transition to Simulation Edit View When pushing [Compile] soft-key in the Simulation Edit View, the edited power fluctuation is compiled, and then the screen transitions to Simulation Control View.
  • Page 123 ⚫ In the output off state, the simulation cannot be started. ⚫ The output on/off phase setting is invalid for the Simulation. --------------------------------------------------------------------------------------------------------------------------------- ◼ Returning to Simulation Edit View If you push the [Edit] soft-key, the execution transitions back to the Simulation Edit View. DP020AS...

  • Page 124: Saving Simulation

    4. Advanced Operation 4.3.9 Saving Simulation -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ Simulation cannot be saved in the Simulation Control View. --------------------------------------------------------------------------------------------------------------------------------- ◼ Saving the simulation in the internal memory 1. Open Simulation Memory View (see 4.3.6). Select the [Target] and [Memory No.] items and specify the simulation to save, then press the [Store] soft-key.

  • Page 125: Clear/Rename Simulation

    4.3.10 Clear/Rename Simulation ◼ Clearing/renaming a simulation saved in internal memory 1. Open Simulation Memory View (see 4.3.6). Select the [Target] and [Memory No.] items and specify the simulation to clear or rename. Specify memory Internal memory [1: System] number DP020AS...
  • Page 126 4. Advanced Operation 2. 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. 3. To rename, push [Rename] soft-key. Rename window opens. Enter a new name and then select [OK].

  • Page 127: Set So As The Simulation Function Is Selected At Power-On

    4.3.11 Set so as the Simulation Function is Selected at Power-on You can set so as the Simulation function is selected at power-on. ◼ Operation procedure 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens. DP020AS...

  • Page 128: Simulation Control By Control I/O

    4. Advanced Operation 2. In [PwOn Mode] item, select [3:Sim]. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ To set so as to Continuous function is selected at power-on, select [1:Continuous] in [PwOn Mode] item. --------------------------------------------------------------------------------------------------------------------------------- 4.3.12 Simulation Control by CONTROL I/O CONTROL I/O enables to start/stop a simulation and to recall the memory. For details, see 4.19. 4.3.13 Screen Overview The Simulation function screen is broadly divided to the Simulation Edit View and the Simulation Control View.

  • Page 129: Figure 4-16 Simulation Edit View

    Figure 4-17 Simulation Control View (Output Off State, Simulation Stopped) ◼ Simulation Control View (output on state, simulation running) Icon Measured Value to be displayed Step Repeat count Output setting of executing step Figure 4-18 Simulation Control View (Output On State, Simulation Running) DP020AS...

  • Page 130: Measuring Harmonic Current

    4. Advanced Operation ◼ Simulation Control View (output on state, simulation stopped) Icon Measured Value to be displayed Step Repeat count Output setting of executing step Figure 4-19 Simulation Control View (Output On State, Simulation Stopped) Measuring Harmonic Current Some electric devices of AC power input have its input current waveform greatly distorted from the sine wave.

  • Page 131: Harmonic Current

    2. The view opens populated with the measured harmonic components of orders 1 to 10 on the left side and orders 11 to 20 on the right side. Note: The view is when in CV mode. In CC mode, the view will be harmonic voltage measurement values. DP020AS...

  • Page 132: Measuring Inrush Current

    4. Advanced Operation 3. Press the [Next] soft-key to switch to the view populated with the measured values for orders 11 to 20 on the left side and orders 21 to 30 on the right side. Press the [Prev] soft-key to return to the original view.

  • Page 133: Peak-Hold Function

    (b) Push the [Measure] soft-key. Hover the cursor over [Exec] of the [PK-H Clr] item and press the ENTER key. 2. Turn on the power switch of the object to be measured. 3. Turn on the output. 4. Read current peak-hold value (I ). This is the maximum inrush current value. PK-H DP020AS...

  • Page 134: Measurement Tips

    4. Advanced Operation 4.5.4 Measurement Tips ⚫ In CV mode, you can see the difference among inrush currents at each power-on phase by changing the phase setting at output on (see 3.6.9) before turning on the output. ⚫ The object inrush current cannot be measured correctly when the maximum peak voltage/current exceeds the one that can be supplied by this product or the peak voltage/current limiter is activated.
  • Page 135 --------------------------------------------------------------------------------------------------------------------------------- ◼ Operation procedure 1. In the [Wave] item, select [CLP]. 2. Move the cursor to [Setup], then select it. The clipped sine wave setting window opens. 3. In the [No.] item, select the clipped sine wave to load. DP020AS...

  • Page 136: Outputting Arbitrary Waveform

    4. Advanced Operation 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). 6. Press the CANCEL key. The clipped sine wave setting window closes. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫...

  • Page 137: Arbitrary Waveform Creation Procedure

    --------------------------------------------------------------------------------------------------------------------------------- 2. Connect the USB memory that has the waveform data to this product. 3. Press the MENU key to open the root menu. Select [Memory] to switch to Memory View. Select [ARB Memory]. DP020AS...
  • Page 138 4. Advanced Operation 4. In the [Direction] item, select [2:USB → SYS]. 5. From the data list box, select the arbitrary waveform to transfer and press the [Copy] soft -key. 6. In the [Memory No.] item, specify the transfer destination internal memory number. Also, enter the arbitrary waveform data name in the [Name] item.

  • Page 139: Outputting Arbitrary Waveform

    -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ ACV is the setting relative to the full scale amplitude of the arbitrary waveform data. When the arbitrary waveform data amplitude is not at full scale, the output voltage amplitude becomes smaller than the ACV setting. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 140: Using Memory Function

    4. Advanced Operation Using Memory Function Using the Memory function, you can access this product's internal memory and USB memory to save, load, clear, and rename the basic setting, arbitrary waveform, sequence, and simulation. 4.8.1 Basic Setting Memory The Basic Setting Memory collectively stores the output-related settings in the Continuous function (e.g.
  • Page 141 Even if the cursor is not on the [Memory No.] item, you can move to the previous number by pressing , and to the next number by pressing PREV NEXT PREV NEXT 5. Press the [Exit] soft-key to return to Memory View. DP020AS...

  • Page 142: Saving, Recalling, And Clearing/Renaming Of Basic Setting Memory

    4. Advanced Operation 4.8.3 Saving, Recalling, and Clearing/Renaming of Basic Setting Memory You can save the settings for the output of the Continuous function to internal memory or USB memory. ◼ Saving basic settings to internal memory 1. Open Basic Setting Memory View (see 4.8.2). Select the [Target] and [Memory No.] items and specify the memory to save, then press the [Store] soft-key.
  • Page 143 ◼ Recalling from Data List View of Basic Setting Memory 1. Open Basic Setting Memory View (see 4.8.2). Select the [Target] and [Memory No.] items and specify the memory to recall, then press the [Recall] soft-key. Internal memory [1: System] Specify memory USB memory [2: USB] number DP020AS...
  • Page 144 4. Advanced Operation 2. The confirmation window for recalling opens. Select [OK]. The Basic Setting Memory with the specified number is recalled. ◼ Clearing/rename Basic Setting Memory saved in internal memory 1. Open Basic Setting Memory View (see 4.8.2). Select the [Target] and [Memory No.] items and specify the memory to clear or rename.
  • Page 145 1. Open Basic Setting Memory View (see 4.8.2). Select the [Target] and [Memory No.] items and specify the simulation to clear or rename. Specify memory Internal memory [1: System] number USB memory [2: USB] 2. To clear, push [Delete] soft-key. Confirmation message is displayed. Select [OK]. The corresponding file in USB memory is deleted. DP020AS...

  • Page 146: Arbitrary Waveform Memory

    4. Advanced Operation 3. 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. ◼ Loading the factory defaults Press in the Continuous View. Confirmation message is displayed. Select [OK]. RECALL The current settings are cleared and the factory default basic settings are loaded.
  • Page 147 USB memory. For how to copy from the USB memory to the internal memory, see 4.7.4. 1. Press the MENU key to open the root menu. Select [Memory] to switch to Memory View. Select [ARB Memory]. 2. In the [Direction] item, select [SYS→USB]. Also, select the waveform to copy from the data list box. DP020AS...
  • Page 148 4. Advanced Operation 3. From the data list box, select the arbitrary waveform to copy and press the [Copy] soft-key. 4. A window to confirm the save name opens. In the [Name] item, enter the arbitrary waveform data name. It can also be left as is. Finally, select [OK]. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫...
  • Page 149 Clearing the internal Arbitrary Waveform Memory resets the data to triangle wave for memories from No. 1 to No. 8 and to square wave for memories from No. 9 to No. 16. Erasing an Arbitrary Waveform Memory in the USB memory deletes the applicable arbitrary waveform data file. Internal memory USB memory DP020AS...

  • Page 150: Sequence Memory

    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. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ A file cannot be renamed in the USB memory if a file with the same name exists in the NF_TOOL\NF_DP020AS\ARB_MEM folder.

  • Page 151: Simulation Memory

    For the operation method, see 4.3.9 and 4.3.10. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ For the Continuous function or Sequence function, first change to the Simulation function and then open the Memory View. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 152: Using Usb Memory Function

    4. Advanced Operation Using USB Memory Function This product supports the mass storage class USB memory. The arbitrary waveform data, sequence data, simulation data, and Basic Setting Memory can be saved into and loaded from the USB memory. When you connect a USB memory to this product, a window opens with the confirmation message “USB Memory Connected,”...

  • Page 153: Saving A Screenshot

    ⚫ The eject operation cannot be performed in the following cases:  When the Memory View is open  When the data list box shows the files in the USB memory --------------------------------------------------------------------------------------------------------------------------------- Saving a Screenshot 4.10 Save the current screen to USB memory. ◼ Operation Method Press shortcut key. DP020AS...

  • Page 154: Using Monitor Function

    4. Advanced Operation ◼ Save destination The image is saved in the NF_TOOL\NF_DP020AS\CAPTURE folder. The file format of the saved image is bmp, the number of colors is 65,000, and the size of one file is 256 KiB. The file name is CAP_YYYYMMDD_hhmmss.bmp.
  • Page 155 1P2W system (phase masters and boosters) each outputs the monitor signal of its own single unit, respectively. ⚫ The output voltage monitor watches the voltage at the output terminal whether the remote sensing state is on or off. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 156: Using Remote Sensing Function

    4. Advanced Operation Using Remote Sensing Function 4.12 The Remote sensing function detects the output voltage at the voltage sensing terminal. When the Remote sensing function is on, the measured value of the voltage is the voltage at the voltage sensing terminal, and the Sens icon is displayed beside the measurement items.
  • Page 157 ◼ Turning on/off Remote sensing function 1. Press the [Meas] or [Misc] soft-key and turn on or off the function in the [Rmt Sense] item. 2. When the Remote sensing function is turned on, [Sens] is displayed beside the measurement items. DP020AS...

  • Page 158: Using Agc Function

    4. Advanced Operation Using AGC Function 4.13 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 159 3. Use the [Rmt Sense] item to set the Remote sensing function to on or off, if necessary. 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. DP020AS...
  • Page 160 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. 2. In the [AGC] item, select [1:OFF]. When [OFF] is selected here, the AGC calibration finishes. 3.

  • Page 161: Using Autocal Function

    ON unless either the AC voltage or DC voltage setting is 0 V. In addition, when the AC/DC mode is changed, it is turned off first. Turn ON it again when you need. For the specification of the Autocal function, see 10.21. DP020AS...
  • Page 162 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 10.21 are not satisfied, the Autocal function cannot be turned on.
  • Page 163 Autocal function is calculated, and the calibration is started. 5. Close the window. ◼ Turning off the Autocal function 1. Open the Autocal set window. Following two methods are available. (a) Shortcut operation: (b) Push the [Misc] soft-key. DP020AS...

  • Page 164: Adjusting Dc Offset

    4. Advanced Operation 2. In the [Auto Cal] item, select [1:OFF]. When [OFF] is selected here, the Autocal calibration finishes, and the calibration factor is cleared. 3. Use the [Rmt Sense] item to set the Remote sensing function to on or off, if necessary. 4.

  • Page 165: Table 4-12 Setting Range Of Dc Offset Adjustment Value (Cc Mode)

    2. While checking the DC offset of the output voltage, adjust the value in the [DC Adj] item so that the DC offset gets close to zero. For a polyphase system, set the adjustment value of each phase. Single unit or single phase system Polyphase system 3. Close the window. DP020AS...

  • Page 166: Using For Unbalanced Polyphase Output

    4. Advanced Operation Using for Unbalanced Polyphase Output 4.16 For the polyphase system, you can set the phase voltage and the phase to be unbalanced. The phase can be set to be unbalanced from 0.0 to 359.9 degrees for both L2 phase and L3 phase. ◼...

  • Page 167: Using As Dc Power Supply

    (b) Press the [Osc] soft-key and select [3: ACDC] or [4: DC] in the [AC/DC] item. 2. Set the output DC voltage in the [DCV] item. In CC mode, set the output DC current in [DCI]. CV mode, ACDC CV mode, DC CC mode, ACDC CC mode, DC DP020AS...

  • Page 168: Setting Voltage Or Current Using External Dc Input Signal

    4. Advanced Operation Setting Voltage or Current using External DC Input Signal 4.18 In AC-VCA and ACHF-VCA, you can use the external DC input signal to set the AC output voltage or AC output current of the internal signal source. In the DC-VCA, you can use the external DC input signal to set the DC output voltage of the internal signal source.

  • Page 169: Using External Signal In Dc-Vca

    When the mode is CV, the gain is 100, and the external DC signal voltage is 1 V, a DC voltage of 100 V will be output. When the mode is CC, the gain is 10, and the external DC signal voltage is 1 V, a DC current of 10 A will be output. DP020AS...
  • Page 170 4. Advanced Operation ◼ Operation procedure 1. Turn off the output, and set the AC/DC mode and signal source to DC-VCA. See 3.6.1. 2. Set the [Gain] item. 3. Supply a DC voltage to the external signal input connector. 4. Turn on the output. PROGRAMMABLE AC POWER SOURCE...

  • Page 171: Control Using External Control Function

    Setting Memory in the Continuous function, or of the Sequence Memory in the Sequence function, or of the Simulation Memory in the Simulation function which has the number specified by the memory 1 and 2 inputs. For the Sequence and Simulation function, the compile is also performed. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 172: Table 4-13 Control I/O Pin Assignment

    4. Advanced Operation Table 4-13 CONTROL I/O Pin Assignment Function Remarks Output Power On/Off Low: Off, High: On Low: On, High: Off (Negative) Output Output On/Off* Low: Off, High: On (Positive) Low: Active, High: None (Negative) Output Protection operation* Low: None, High: Active (Positive) Low: Active, High: None (Negative) Output Limiter operation*...
  • Page 173 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens. 2. Select the [Control I/O] item to open the setting window. 3. In the [Ext Ctrl] item, select [1:Disable] or [2:Enable]. DP020AS...
  • Page 174 4. Advanced Operation ◼ Setting the polarity of the state output Open the setting window of Control I/O, and select [Negative] or [Positive] in the [ExtOut Pol] item. ◼ Setting the trigger output 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens.

  • Page 175: Synchronizing The Output Frequency With The Power Line Or The External Signal

    10.26.3 for the interface specification of the external synchronization signal. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ The output on phase/off phase setting (3.6.9) is valid in SYNC also. ⚫ You cannot make the output on if synchronization is not performed. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...
  • Page 176 4. Advanced Operation ◼ Operation procedure 1. If you want to synchronize the internal signal source with the external signal, input the synchronization signal by using the external signal input connector. If you want to synchronize it with the power line, this step is not necessary. 2.

  • Page 177: Amplifying The External Signal Input

    ⚫ You cannot amplify the external signal in the polyphase system. Also, you cannot select EXT or ADD for the signal source. --------------------------------------------------------------------------------------------------------------------------------- ◼ Operation procedure 1. Input the signal to be amplified from the external signal input connector. 2. Press the [Osc] soft-key and select [2:Source], then select [4:EXT] or [5:ADD]. DP020AS...

  • Page 178: Turning The Output On Or Off Rapidly

    4. Advanced Operation 3. Press the [Home] soft-key to open the Home screen. Set the gain in the [Gain] item. Turning the Output On or Off Rapidly 4.22 In the factory default settings, the internal output relay of this product is activated linking to the output on/off.

  • Page 179: Turning Output Off In The High Impedance State

    0 V. This enables controlling the voltage surge when the output is off. In CC mode, this is disabled. For the combination of the CV/CC mode, high impedance output off, and output relay control that can be set, see Table 4-16. DP020AS...

  • Page 180: Table 4-16 Cv/Cc Mode, High Impedance Output Off, And Output Relay Control

    4. Advanced Operation Table 4-16 CV/CC Mode, High Impedance Output Off, and Output Relay Control Output relay control High impedance CV/CC Enabled Disabled output off mode (On/off operation) (Fixed to on) Enabled CV mode Disabled (Output off after 0 V) CC mode ◼...

  • Page 181: 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 ◼ Operation procedure 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens. DP020AS...

  • Page 182: Key Lock

    4. Advanced Operation 2. In the [PwON Output] item on page 2 of the system setting window, select [1: ON] or [2: OFF]. When you select [On], the automatic output-on at power-on is enabled. Key Lock 4.25 If the key lock is enabled, operations using the keys or MODIFY dial are not accepted. The acceptable operations are for enabling the output off and the key lock only.

  • Page 183: Changing The Screen Brightness

    1. Open the window for adjusting the LCD. Following two methods are available. (a) Shortcut operation: (b) Press the MENU key to move to the root menu, and then select [System]. The system setting window opens. Put the cursor on [Setup] next to the [LCD] item, then press the ENTER key. DP020AS...
  • Page 184 4. Advanced Operation 2. Adjust the brightness in the [Brightness] item. The larger the value, the brighter the screen. 3. Push the [CANCEL] key to close the window. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ In a multi-unit system, you can set the brightness for each unit individually. --------------------------------------------------------------------------------------------------------------------------------- ◼...

  • Page 185: Using The Shutdown Function

    Connect the terminals of the provided SHUT DOWN connector so that it is short-circuited during normal operation and open during shutdown, and then insert it into the SHUT DOWN connector of the unit. For the specifications of the non-voltage contact, see 10.3. DP020AS internal circuit 5 kΩ...

  • Page 186: Setting The Date And Time

    4. Advanced Operation 2. In the [Shut Down] item on page 2 of the system setting window, select [1: Disable] or [2: Enable]. ◼ Operation procedure (recovering from shutdown) The following two methods are available for recovery after shutdown. (a) Restart the power when state of connected between the terminals of the SHUT DOWN connector.
  • Page 187 3. Enter the date and time, and then finally select [OK]. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ This product has a built-in battery. As the battery depletes, the time will deviate. For replacement of the battery, contact the seller (NF Corporation or our agent) from whom you purchased this product. ---------------------------------------------------------------------------------------------------------------------------------...

  • Page 188: Restoring Initial Settings

    4. Advanced Operation Restoring Initial Settings 4.30 4.30.1 Resetting If you perform a reset, the setting items marked with “○” in Table 4-17 are restored to the setting values in the table. Ensure that you reset this product in the output off state. Table 4-17 Setting Items to be Reset Setting Item Setting value...
  • Page 189 Start Phase: Disabled, 0 Stop Phase: Disabled, 0 Step sync output: LL Trigger output: Off Repeat count: Disabled 1 *1: The measurement display phase is L1 regardless of the output phase configuration. *2: All three of the clipped sine waves are initialized. DP020AS...

  • Page 190: Restoring The Factory Default State

    4. Advanced Operation ◼ Operation procedure 1. Press the MENU key to move to the root menu, and 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 191 3. The execution dialog box opens. Press the Enter key to start initialization and set the factory default settings. -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ A factory setup is not performed with a multi-unit system. Perform it during single unit operation. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 193: Description Of Screen And Menu

    5. Description of Screen and Menu Screen Configuration ······································· 176 Menu Composition ·········································· 179 DP020AS...

  • Page 194: 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 195: Status Icon

    4.25 Key lock The key lock is enabled. Remote Displays the currently selected remote interface. In the local state, the icon is displayed in black. In the remote control state, the icon is lit in green. DP020AS...

  • Page 196: Measured Value Display Items

    5. Description of Screen and Menu Table 5-2 Status Icons (Continued) Icon Name Meaning Refer to Editing 4.2.13, The edit view for the sequence or simulation is displayed. 4.3.13 Running The sequence or simulation is running. 4.2.13, 4.3.13 4.2.13, Stand by The sequence or simulation stands by.

  • Page 197: Output Setting Display Items

    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 8.1. Menu Composition The menu composition of this product is shown in Figure 5-2. Press the MENU key to move to the root menu. Figure 5-2 Menu Composition DP020AS...

  • Page 198: Menus Of The Continuous Function

    5. Description of Screen and Menu 5.2.1 Menus of the Continuous Function The menus of the Continuous function are shown in Table 5-5. You can open each menu by using a soft-key. Table 5-5 Menus of the Continuous Function Description Menu Refer to Switches the output voltage range.

  • Page 199: Menus Of The Sequence Function

    Branches to a step of the branch 2. It is displayed in the sequence running state. Meas 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. DP020AS...

  • Page 200: 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 201: System Menu

    Selects the output function (Continuous/Sequence/Simulation) at 4.2.11, power-on. 4.3.11 4.24 PwON Output Enables/disables the function to turn on the output at power-on. Shut Down Enables/disables the shutdown function. 4.28 4.30.2 Factory Set Restores the factory default settings. Date/Time Sets the date and time. 4.29 DP020AS...

  • Page 203: Remote Control

    6. Remote Control Communication Interface ·································· 186 Remote/Local State Switching ··························· 194 DP020AS...

  • Page 204: Communication Interface

    6. Remote Control Communication Interface This product is provided with the USB, RS232, GPIB and LAN communication interfaces as standard and is remote-controllable by a computer. The remote control allows almost all the operations available on the control panel to be performed. In addition, it can read the internal state such as setting values and errors.
  • Page 205 -------- Notes ------------------------------------------------------------------------------------------------------------ ⚫ Avoid use in a place under electrically noisy environment. ⚫ It is recommended to use a fully-shielded, short cable. ⚫ The use of USB hub may cause the product not to communicate properly. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 206: Rs232

    6. Remote Control ◼ About USB ID Used to identify each product from the application when multiple DP020AS units are connected through USB in the system. The USB ID is represented in the following format. USB0::[Vendor number]::[Product number]::[Serial number]::INSTR Vendor number:...
  • Page 207 -------- 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. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 208: Gpib

    6. Remote Control 6.1.3 GPIB This product is compliant with the GPIB IEEE Standard 488.1-1987. The GPIB-based remote control is available. For the interface specifications, see 10.31. ◼ Operation procedure 1. Press the MENU key to move to the root menu, and then select [System]. The system setting window opens.
  • Page 209 ⚫ Ensure that the length of one cable is within 4 meters. ⚫ 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. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 210: Lan

    6. Remote Control 6.1.4 LAN For the interface specifications, see 10.31. 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 211 When communication becomes possible, the LAN icon is displayed. See the Instruction Manual (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. --------------------------------------------------------------------------------------------------------------------------------- DP020AS...

  • Page 212: Remote/Local State Switching

    6. Remote Control Remote/Local State Switching 6.2.1 Remote state In the Remote state, the control panel key operations are not accepted. However, the output off (OUTPUT key) and the switching to the Local state ( ) are accepted. ◼ Switching to the Remote state When communication is established after the command is sent from the computer to this product, this product switches to the Remote state.

  • Page 213: Options

    7. Options System Cable (for Multi-unit system) ·················· 196 Rack-Mount Adapter ········································ 196 Replacement Air Filter ····································· 200 Power Cable ·················································· 200 DP020AS...

  • Page 214: System Cable (For Multi-Unit System)

    System Cable (for Multi-unit system) This cable is used to configure a multi-unit system by connecting multiple DP020AS. This option can be requested at the time of order or added after the purchase. For how to configure a multi-unit system, see 2.5.2 and 3.4.

  • Page 215: Figure 7-1 Outline Dimensional Drawing (Rack-Mount Adapter [Inch])

    7.2 Rack-Mount Adapter Part A details (1:1) Figure 7-1 Outline Dimensional Drawing (Rack-mount Adapter [inch]) Part A details (1:1) Figure 7-2 Outline Dimensional Drawing (Rack-mount Adapter [mm]) DP020AS...

  • Page 216: Figure 7-3 Assembly Diagram (Rack-Mount Adapter [Inch])

    7. Options Part No Name 部品番号 品名 数量  Rack mount, EIA, L ① ラックマウント・EIA・L Rack mount, EIA, R  Countersunk machine screw (M48)  ② ラックマウント・EIA・R ③ 小ねじ・サラ・M4×8 Remove the attached cover. 4 in all Remove the attached rubber feet and screws. 4 in all Figure 7-3 Assembly Diagram (Rack-mount Adapter [inch]) PROGRAMMABLE AC POWER SOURCE...

  • Page 217: Figure 7-4 Assembly Diagram (Rack-Mount Adapter [Mm])

    Countersunk machine screw (M48)  ③ ラックマウント・JIS・スペーサ Countersunk machine screw (M38)  ④ 小ねじ・サラ・M4×8 ⑤ 小ねじ・サラ・M3×8 Remove the attached cover. 4 in all Remove the attached rubber feet and screws. 4 in all Figure 7-4 Assembly Diagram (Rack-mount Adapter [mm]) DP020AS...

  • Page 218: Replacement Air Filter

    7. Options Replacement Air Filter A set of replacement air filters on the front grill. This option can be requested at the time of order or added after the purchase. For how to replace the air filters, see 9.2. Table 7-3 Replacement Air Filter Model Names Model name Product name PA-001-3884...

  • Page 219: Troubleshooting

    8. Troubleshooting Error Messages and Error Handling ···················· 202 When a Failure is Suspected ····························· 208 DP020AS...

  • Page 220: Error Messages And Error Handling

    8. Troubleshooting Error Messages and Error Handling 8.1.1 Error Message Screen An error message screen opens as shown in Figure 8-1, for example, in case that the protection function is activated. The description of each item is shown in Table 8-1. Figure 8-1 Error Message Screen Example Table 8-1 Description of the Error Message Screen Symbol...

  • Page 221: Protection Operation Types

    In this case, an error message appears after the output off. ◼ Icon display The output state remains unchanged. The panel shows an icon instead of an error message. The panel operation is available as usual. DP020AS...

  • Page 222: Error Message List

    8. Troubleshooting 8.1.4 Error Message List Error messages are listed in Table 8-2. Table 8-2 Error Message List Message Protection Cause or Necessary action type Invalid in This Output Message This output mode does not allow the setting Mode display only (execution).
  • Page 223 There is a communication error between the Power Unit Lock firmware and the power unit. Cycle the power. If it still occurs, contact the seller (NF Corporation or our agent) from whom you purchased the product. Internal Communication System There is an internal communication error.
  • Page 224 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 wattage limiter is activated.
  • Page 225 Cause or Necessary action type Battery Depleted Message The built-in battery has depleted. Contact display only the seller (NF Corporation or our agent) from whom you purchased this product. Current Parameters Message When the output parameters read from the Rounded...

  • Page 226: When A Failure Is Suspected

    When a Failure is Suspected When a symptom occurs that suspects a failure, take an action according to Table 8-3. If it does not solve the problem, contact the seller (NF Corporation or our agent) from whom you purchased the product.
  • Page 227 DC output). well. →4.21 The limiter is activated For a load with lower impedance, (the limiter icon is the limiter is activated to make the displayed). output lower than the setting value. Check on the limiter setting. →4.1 DP020AS...
  • Page 228 8. Troubleshooting Table 8-3 Actions When a Failure is Suspected (Continued) Category Symptom Possible cause Necessary Actions Output- The measured The waveform is set to In the specified clip ratio mode, related voltage is CLP (clipped sine wave) the output voltage setting means a problem different from and the Type is set to...
  • Page 229 (step0). In the ACDC it cannot be In the stand-by state of set to ON unless either AC voltage Sequence mode (step0) or DC voltage setting is 0 V. and ACDC either AC →4.12 voltage or DC voltage setting is not 0 V. DP020AS...
  • Page 230 8. Troubleshooting Table 8-3 Actions When a Failure is Suspected (Continued) Category Symptom Possible cause Necessary Actions Problem of The AGC The output mode is The AGC function can be set to on function cannot incorrect. in the AC-INT, AC-VCA, AC- function be turned on.
  • Page 231 →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 DP020AS...
  • Page 232 Check the master/slave setting of each unit. →3.4.2, 3.4.3 Different models are If a model any other DP020AS is connected. in the multi-unit system configuration, the entire multi-unit system cannot start up. PROGRAMMABLE AC POWER SOURCE...

  • Page 233: Maintenance

    9. Maintenance Preface ························································· 216 Daily Maintenance ·········································· 216 Repacking and transportation ···························· 217 Product Information Display ······························ 218 DP020AS...

  • Page 234: Preface

    9. Maintenance Preface This chapter describes the following. ⚫ 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. Daily Maintenance The product shall be installed in a location that satisfies the installation conditions (see 2.2).

  • Page 235: Repacking And Transportation

    ⚫ In order for the main unit to be sufficiently protected from impact during transportation, pack it with a shock absorber such as AirCap. ⚫ When requesting transportation, instruct the carrier that this product is a precision equipment. ⚫ Be sure to include the instruction manual at transportation. DP020AS...

  • Page 236: Product Information Display

    9. Maintenance Product Information Display The model name, firmware version, and other information about this product are displayed. ◼ Operation procedure for checking from the system menu 1. Press the MENU key to move to the root menu, and then select [System]. The System menu opens. 2.
  • Page 237 A 2D barcode is displayed on the second page of the System menu. The information in the 2D barcode consists of our company name, model name, manufacturing number, device information, firmware version, date last adjusted by NF Corporation, and date last calibrated by NF Corporation. DP020AS...

  • Page 239: Specifications

    10.32 USB Memory Interface ········································ 255 10.33 Waveform Monitor Output ···································· 256 10.34 SHUT DOWN Input ············································ 256 10.35 Operation Environment ······································· 257 10.36 Externals, Mass, and Terminal Block ······················ 257 10.37 Option ····························································· 258 10.38 Outline Dimensional Drawing ······························· 259 DP020AS...
  • Page 240 A value without the accuracy is the nominal value or representative value (shown as typ.). The DP020AS corresponds to Clause 2 (8) Frequency converter, Appendix 1 of Export Trade Control Ordinance of Japan. The permission for exportation of the Japanese Administration is necessary for export outside Japan.

  • Page 241: Figure 10-1 Maximum System Configuration *1

    4 kVA to a maximum of 12 kVA for single-phase three-wire output, and from 6 kVA to a maximum of 18 kVA for three-phase four-wire output. The DP020AS has system master and slave functions. *1 “1P2W” represents a single-phase two-wire, “1P3W” represents a single-phase three-wire, and “3P4W”...

  • Page 242: Output Phase Configuration

    10. Specifications Output Phase Configuration 10.1 Polyphase output Single-phase output Output phase Polyphase system Configuration Single-unit, Single-phase three-wire system (= 1P3W system), Single-phase two-wire system (= 1P2W system) (Y-connection) Three-phase four-wire system (= 3P4W system) Output Function 10.2 Single-unit Multi-unit system Output function Continuous, Sequence, Simulation Output Mode...

  • Page 243: Ac/Dc Mode

    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. For other than 1P2W, the setting is possible only for 1P3W in CV mode. DP020AS...

  • Page 244: Signal Source

    10. Specifications Signal Source 10.6 Single-unit Polyphase system 1P2W system (1P3W system, 3P4W system) Signal source INT, VCA, SYNC, EXT, ADD INT, VCA, SYNC Description Uses the internal signal source. Sets the output voltage or output current, output waveform, frequency, output on phase, and output off phase by using the panel or the external interface such as USB.

  • Page 245: Constant Voltage Output

    In the 1P3W system and the 3P4W system, this specification is for the phase voltage settings. In balanced mode, all phases are set together. In unbalanced mode, each phase is set individually. For DC voltage setting in the 1P3W system and ACDC, see *12. DP020AS...

  • Page 246: Dc Voltage Output (Cv Mode)

    10. Specifications In the case of 10 V to 175 V / 20 V to 350 V, sine wave, no load, 45 Hz to 65 Hz, DC voltage setting 0 V, 23 °C5 °C. In the 1P3W system and the 3P4W system, this specification is the accuracy for the phase voltage settings of the system master or phase master.
  • Page 247 The range of “N” is from 2 to 9 units, and the range of “B” is from 0 to 2 units. See Figure 10-1. *16: Instantaneous = within 2 ms, at the rated output voltage. DP020AS...

  • Page 248: Constant Current Output (Custom)

    10. Specifications Constant Current Output (custom) 10.8 10.8.1 AC Current Output (CC mode) [V]=Vrms, [A]=Arms, unless otherwise noted. Single-unit Multi-unit system *17 Output phase 1P2W 1P2W, 1P3W, 3P4W configuration Floating output. Floating output, the Lo terminal can Connect neutral point (Lo terminal) to be grounded.

  • Page 249: Dc Current Output (Cc Mode)

    0.01 A (set < 100 A)，0.1 A (set < 1000 A)  (|0.2 % of set| + 0.5 % of rng) Current accuracy *29 Rated output voltage 100 V / 200 V Maximum voltage 227 V / 454 V Power capacity 2 kW 2 kW × N DP020AS...

  • Page 250: Output Frequency

    10. Specifications *27: If the output voltage is higher than the rated value, this is limited (lowered) to satisfy the power capacity. If there is the AC superimposition, the RMS voltage of DC+AC satisfies the rated output voltage. In the case that the ambient temperature is 40 °C or higher, the rated output voltage may decrease.

  • Page 251: Soft Start And Soft Stop

    DC or 45 Hz to 65 Hz. Transition state immediately after a change of the input power-supply voltage is not included. In the 1P3W system and the 3P4W system, this specification is the value for the phase voltage or phase current. DP020AS...

  • Page 252: Power Input

    10. Specifications *40: In the case that the output current is changed from 0 % to 100 % of the maximum current. For output voltage 50 V to 160 V/100 V to 320 V, no load reference. However, if the output voltage is higher than the rated value, the maximum current is limited to satisfy the power capacity.

  • Page 253: Measurement Function

    *46: 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. *47: The displayed value is the result of calculation with the phase voltage measured value. DP020AS...
  • Page 254 10. Specifications Current *48 *49 Single-unit Multi-unit system Effective Full scale 1P2W value 24 A × N / 12 A × N 24 A / 12 A (rms) 1P3W, 3P4W 24 A × (1 + B) / 12 A × (1 + B) Resolution 0.01 A (rdg <...
  • Page 255 *61: “N” represents the number of units configured for the entire system, and “B” represents the number of boost-up units for each phase. The range of “N” is from 2 to 9 units, and the range of “B” is from 0 to 2 units. See Figure 10-1. DP020AS...

  • Page 256: Current Limiter (Cv Mode)

    10. Specifications 10.16 Current Limiter (CV mode) 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 257: Voltage Limiter (Cc Mode)

    It does not also work for the external signal source of EXT and ADD. The limitation does not work for the Sequence and Simulation. In the 1P3W system and the 3P4W system, the setting is common to all the phases. DP020AS...

  • Page 258: Voltage Setting Limit Function (Cv Mode)

    10. Specifications 10.18.1 Voltage Setting Limit Function (CV mode) Output voltage setting limit function in CV mode. Voltage setting limit 1 (in the AC or ACHF mode, and sine wave or clipped sine wave is selected) Single-unit Polyphase system 1P2W system (1P3W system, 3P4W system) Phase voltage setting range 0.1 V to 175.0 V / 0.1 V to 350.0 V (AC)

  • Page 259: Frequency Setting Limit Function

    40.00 Hz to 1500 Hz (AC) limit 40.00 Hz to 5000 Hz (ACHF) 1.00 Hz to 1500 Hz (ACDC) Factory default 40 Hz (AC, ACHF) 1 Hz (ACDC) 0.01 Hz (set < 100 Hz)，0.1 Hz (set < 1000 Hz)，1 Hz (set ≤5000 Hz) Resolution DP020AS...

  • Page 260: Remote Sensing

    10. Specifications 10.19 Remote Sensing This switches the voltage used for measurement. When the remote sensing is on, the V sensing 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 V sensing terminal.

  • Page 261: Autocal (Output Voltage Compensation)

    (in the case of DC or 40 Hz to 1500 Hz, 50 V or higher output voltage, resistance load, the output current is the maximum current or less) *67: The values of the calibration range and accuracy are the ones at the time when the Autocal is turned DP020AS...

  • Page 262: Sequence

    10. Specifications 10.22 Sequence Effective only for AC-INT, ACDC-INT, and DC-INT. Both CV and CC modes are supported. Single-unit Polyphase system 1P2W system (1P3W system, 3P4W 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...

  • Page 263: 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 DP020AS...

  • Page 264: Clipped Sine Wave

    10. Specifications 10.24 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. CC modes are not supported. Single-unit Multi-unit system Number of memories 3 (non-volatile) Variable range 1.10 to 1.41...

  • Page 265: External Signal Input

    Also used as the external synchronization signal input Input impedance 1 M Input voltage 2.2 V (A/D resolution 10 bit) range Nondestructive 10 V maximum input voltage *75: In the 1P3W system and the 3P4W system, the setting is common to all the phases. DP020AS...

  • Page 266: External Signal Input (Only Ext And Add)

    10. Specifications *76: “N” represents the number of units configured for the entire system, and “B” represents the number of boost-up units for each phase. The range of “N” is from 2 to 9 units, and the range of “B” is from 0 to 2 units.

  • Page 267: External Synchronous Signal Input (Signal Source Sync Only)

    40 Hz to 1500 Hz Input terminal BNC connector (rear panel, unbalanced) Input impedance 1 M Threshold of input voltage Low: 0.8 V or less, High: 2.6 V or more, chassis potential 300 s Minimum pulse width Nondestructive maximum input 10 V voltage DP020AS...

  • Page 268: General Function

    10. Specifications 10.27 General Function Description Factory default LCD display Brightness 0 to 99 setting Beep (key operation and On or Off erroneous operation, Alarms on abnormal situation regardless of the setting limiter operation) Key lock On or Off On: Only key lock-off and output-off are available High impedance output off Setting high impedance output off function *80 *81 *82...

  • Page 269: Memory Function

    *83: Some items do not exist depending on the AC/DC mode or signal source. *84: If there is a discrepancy between the number of connected units stored and the actual number of connected units, the items relating to the number of connected units are reconciled. DP020AS...

  • Page 270: Self-Diagnosis/Protection Function

    10. Specifications Items in the System Setting Memory Factory default Master-slave Disable Output phase configuration 1P2W Output function Continuous Output mode CV mode DC offset setting 0 mV (CV mode), 0 mA (CC mode) Measurement unit selection Remote sensing See 10.27 (excluding the time unit setting of the Step General function Time for the Sequence and Simulation) Waveform monitor output target...

  • Page 271: Control I/O

    Sequence Memory for the Sequence, and the Simulation Memory for the Simulation. For the Sequence and Simulation, the compile data is also included. *87: The memory specification is shown in the table below. Memory No. Specify Memory specification 1 High High Memory specification 2 High High DP020AS...

  • Page 272: External Interface

    10. Specifications (Continued) Factory Item Description default State Output level Low: 0.4 V or less, High: 2.7 V or more output chassis potential 220  Output impedance *88 Positive or Negative Polarity Negative Status Power On/Off Low: Off, High: On Output On/Off* Low: On, High: Off (Negative) Low: Off, High: On (Positive)

  • Page 273: Usb Memory Interface

    Basic Setting Memory, Sequence, Simulation, arbitrary wave File operation Create dedicated directory, rename, delete, load, and save 2-byte characters (Japanese, etc.) are not supported. *94: We do not guarantee that all USB memories can be operational with this product. DP020AS...

  • Page 274: Waveform Monitor Output

    10. Specifications 10.33 Waveform Monitor Output This can monitor the waveform of the output voltage or current. (only one terminal) Only the system master can use this function when configuring a 1P2W system. Only the system master and phase master can use this function when configuring a 1P3W system or 3P4W system.

  • Page 275: Operation Environment

    10.36 Externals, Mass, and Terminal Block Single-unit Dimensions (W×H×D) 430×130×650 mm (Excluding projections) Mass 20 kg approx. Power input terminal (rear) M5 screw Output terminal (rear) M5 screw V sensing terminal (rear) Spring type terminal AWG 24 to 16 DP020AS...
  • Page 276 10. Specifications 10.37 Option Option name Description Remarks System Cable PA-001-3879 (0.5 m) Allows you to configure the polyphase system On order and PA-001-3880 (1 m) or boost-up by using multiple units. after purchase PA-001-3881 (2 m) Rack-Mount Adapter The rack-mount adapter is a set of brackets used EIA (inch) On order and to mount the product on the EIA or JIS standard...

  • Page 277: Outline Dimensional Drawing

    10.38 Outline Dimensional Drawing 10.38 Outline Dimensional Drawing Figure 10-3 DP020AS DP020AS...
  • Page 279 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 281 • Information provided in this manual is intended to be accurate and reliable. However, we assume no responsibility for any damage regarding the contents of this manual. • We assume no responsibility for influences resulting from the operations in this manual. ©Copyright 2024, NF Corporation Programmable AC Power Source DP020AS Instruction Manual...
  • Page 283 NF Corporation...

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