Matsusada Precision DOSF Series Instruction Manual
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Matsusada Precision DOSF Series Instruction Manual

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Instruction manual
DOSF series
Model
*103.9.222*
B/N: 103.9.222
Rev.1.0
F-RA-001-2R3

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Summary of Contents for Matsusada Precision DOSF Series

  • Page 1 Instruction manual DOSF series Model *103.9.222* B/N: 103.9.222 Rev.1.0 F-RA-001-2R3...
  • Page 2 ◆ No patent liability is assumed with respect to the use of the information contained herein. Moreover, because Matsusada Precision Inc. is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice. Every precaution has been taken in the preparation of this manual.
  • Page 4 Bistable push button switch for preventing electric shock) Indicates the possible danger of death if you Bistable push button switch drink it and burns or blindness if it attaches. Indicates the possible danger of exposure Alternative Current to radiation. DOSF series...
  • Page 5  Do not process or damage power cables It may result in electric shock or fire.  Regarding the input voltage Check the page describing the input terminals and input voltage in the instruction manual. Do not provide any voltage out of the specifications. DOSF series...
  • Page 6 In order to avoid electric shock, ground the terminals to discharge using a short-circuit grounding apparatus and check the voltage again. The terminals here mean all terminals like input and output terminals and terminals for communications and remote controls. DOSF series...
  • Page 7 It requires to be replaced at regular intervals to extend the lifetime. For the replacement, contact us. (It requires a replacement charge separately. Do not replace it by yourself, as there is a risk of electric shock.) DOSF series...

  • Page 9: Table Of Contents

    4-4 Floating ground (-LF) ················································································································ 81 5 -LMs Option ································································································································· 83 5-1 Connecting Master and Slave Units ····························································································· 83 5-2 Operation Procedures ··············································································································· 84 5-3 Usage Notes ··························································································································· 84 5-4 Settings ································································································································· 85 5-5 Monitor ·································································································································· 86 6 Troubleshooting ···························································································································· 87 DOSF series...

  • Page 11: Introduction

    1 Introduction 1-1 Introduction Thank you very much for purchasing our DOSF series, Ultra-High-Speed Bipolar Power Supply. We have taken all possible measures to ensure the quality control of our products. Please follow the instructions in this manual to ensure full performance and safe use of the product.。...

  • Page 12: Installation Conditions

    This unit falls under "Equipment Utilizing High Frequency Current". The DOSF series falls under the category of "Equipment Utilizing High Frequency Current" that requires permission for use from the Minister of Internal Affairs and Communications in accordance with the provision of Article 100 of the Radio Law.

  • Page 13: Before Considering It As A Malfunction

    In this case, operate the unit while monitoring the output waveform. 100% f [Hz] [Vpp] Frequency ratio to fc → Attenuation of output amplitude with frequency DOSF series...

  • Page 15: External View

    DOSF60-2.5 p.6, 8 p.11 Terminal block DOSF60-5 p.6, 8 p.11 Terminal block DOSF60-10 p.7, 8 p.12 Terminal block DOSF60-20 1200 p.13 Terminal block DOSF60-33.3 2000 p.13 Terminal block ※ The width (W) is 483 [mm] for all models. DOSF series...

  • Page 16: External View

    Output terminal (20) OVP setting switch Voltage monitor terminal (21) LOCK LED Current monitor terminal (22) LOCK switch AC input terminal (10) (23) WAVE switch Remote switch (option) (11) (24) CV/CC switch Interlock (option) (12) (25) DISP switch (13) DOSF series...

  • Page 17: External View B (Height: 177Mm)

    Output terminal (20) OVP setting switch Voltage monitor terminal (21) LOCK LED Current monitor terminal (22) LOCK switch AC input terminal (10) (23) WAVE switch Remote switch (option) (11) (24) ⑫ CV/CC switch Interlock (option) (25) ⑬ DISP switch DOSF series...

  • Page 18: External View A (W/Communication Option)

    Model: DOSF20-7.5、20-15、25-6、25-12、60-2.5、60-5 (7) (6) [Rear panel] 2-2-4 External View B (w/Communication Option) Model: DOSF20-30、25-24、45-13.3、45-16、60-10 [Rear panel] Master/Slave connector (option) AC input terminal Output terminal Remote switch (option) Voltage monitor terminal Interlock (option) Current monitor terminal Communication connector (option) DOSF series...

  • Page 19: External View C (Height: 233Mm)

    Freq//Duty setting encoder (24) Remote switch (option) Memory switch (16) Ext. control signal (Vcon) LED (25) Interlock (option) OVP setting switch (17) Ext. control signal (Vcon) switch (26) Communication connector (option) LOCK LED (18) Ext. control signal (Vcon) terminal DOSF series...

  • Page 20: External View D (Hight: 233Mm)

    Freq//Duty setting encoder Remote switch (option) (15) (24) Memory switch Ext. control signal (Vcon) LED Interlock (option) (16) (25) OVP setting switch (17) Ext. control signal (Vcon) switch (26) Communication connector (option) LOCK LED (18) Ext. control signal (Vcon) terminal DOSF series...

  • Page 21: External Dimensions

    2 External View 2-3 External Dimensions Model D1 [mm] D2 [mm] 150W 2-3-1 External Dimensions A 300W (Terminal) DOSF series...

  • Page 22: External Dimensions B

    2 External View 2-3-2 External Dimensions B (Terminal) DOSF series...

  • Page 23: External Dimensions C

    2 External View 2-3-3 External Dimensions C (Terminal) DOSF series...

  • Page 24: External Dimensions D

    2 External View 2-3-4 External Dimensions D (Bus bar) DOSF series...

  • Page 25: Operation

    Also, even if the sine wave output resonates, the output may simply appear to be decreasing. If there is any abnormality, connect a C-R series circuit after checking the output waveform with square wave output. Current Current Time Time Normal square wave Resonating square wave output output DOSF series...

  • Page 26: Connecting Ac Input Power Cable

    The shielded wire should be grounded at a single point, either on the unit itself or on the load. Turn on the AC input of the unit. +OUT -OUT Jumper Jumper -Sensing lead +Sensing wire wire lead wire Shield wire +Output wire -Output wire Load Wiring remote sensing wires DOSF series...

  • Page 27: Other Functions

    Avoid using the unit continuously at high frequencies in which its output amplitude is decreased. This will increase the internal loss of the product and may lead to failure. For your safety, be sure to ground the GND terminal. DOSF series...

  • Page 28: Operation

    ■ Operation panel and dials/switches VOLT/CURR VOLT/CURR Freq/Duty Ext Vcon Freq/Duty setting encoder selector switch OUTPUT selector switch switch setting ON/OFF switch encoder LCD display WAVE Memory selector switch switch OVP setting CV/CC switch selector switch KEYLOCK switch DISP selector switch [Enlarged] DOSF series...

  • Page 29: Basic Operation

    3 Operation 3-8-1 Basic Operation The DOSF series can be easily set its basic operation by operating the switches on the front panel. The setting contents and operation status can be checked on the display and LED indication. In the basic operation, basic settings such as voltage, current, waveform, and function except for sequence operation can be performed.
  • Page 30 ➞  OVP Set 60.0 V Setting of OVP value  OCP Set 15.0 A Setting of OCP value  Moni-Set Setting of measurement  Period Set Auto Setting of measurement time Ex.: Screen when protections are set DOSF series...
  • Page 31 Setting of DC current 59.9 Vdc 12.1 Adc Ex.: Screen when CC mode is set. When the operation mode is switched by pressing the [CV/CC] selector while the output is turned on, the output will be turned off. DOSF series...
  • Page 32 3 Operation 3-8-1-3 Switching waveform signals The DOSF series can switch between a waveform signal generated by the internal circuit and a waveform signal input externally, by the external control voltage switch (EXT VCON switch). By enabling the external waveform signal, the unit can be operated as a bipolar amplifier.
  • Page 33 The set values are neither RMS values nor peak-to-peak values. Voltage Voltage (Peak) 50V＋30V 50V-30V Ex.: An amplify range from 20V to 80V Since the amplitude (peak) is +/-30V with 50V as the center, therefore, ACV=30V and DCV=50V. DOSF series...
  • Page 34 Encoder (Change the value) The setting unit and range for AC and DC values vary depending on the model. Refer to the table below. Refer to the table below. Setting unit and range for DOSF series Setting range Mode Model Unit Disp.
  • Page 35 ON Phase +0 deg Press the [FREQ/DUTY] selector. Selector ➞ Wave Sine FREQ/DUTY Freq 1.000kHz Encoder Start 0 deg ON Phase +0 deg Press the [FREQ/DUTY] selector. ➞ Wave Sine Freq 1.000kHz Start 0 deg ON Phase +0 deg DOSF series...
  • Page 36 A four-digit setting is available. The settable minimum unit depends on the displayed frequency. Ex. 1: For 1.000Hz display, 0.01Hz unit. Ex. 2: For 1.000kHz display, 0.001kHz unit. Ex. 3: 10.00kHz display, 0.01kHz unit. Ex. 4: 100.0kHz display, 0.1kHz unit. DOSF series...
  • Page 37 Ex.: The cutoff phase is set to -180 deg. Ex.: The input phase is set to 180 deg. The polarity of the numerical value is indicated + (plus) in the input phase, and - (minus) in the cutoff phase. DOSF series...
  • Page 38 The selected item will be indicated by "➞” flashing on the display. Selector FREQ/DUTY The item value with blinking "➞" is adjustable. Encoder (Adjusting values) Adjusting values: Turn the FREQ/DUTY setting encoder to adjust the on-duty ratio. On-duty ratio setting range: 10 to 90%, in 0.1% increments DOSF series...
  • Page 39 Voltage and current setting screen ➞ <LOC> CV Mode ➞ ACV Set 60.0 V DCV Set -40.0 V 59.9 Vdc 12.1 Adc Press the [DISP] selector. ➞ Wave Sine ➞ Freq 1.000kHz Start 0 deg ON Phase 0 deg Waveform setting screen DOSF series...
  • Page 40 Pressing any switch other than the [MEMORY] switch or the [DISP] selector cancels the data load or registration, and returns to the voltage/current setting screen. WAVE MEMORY Memory switch (Switching call/register) VOLT/CURR CV/CC OVP SET DISP KEYLOCK Encoder (Changing the memory DISP selector switch number setting) (Fixing the setting) DOSF series...
  • Page 41 DISP DCV Set -40.0 V Sine 1.000kHz MEMORY switch (3) Data registration DISP selector (2）Memory store confirmation screen (registration) screen DISP STORE selector Data Save ACV Set 60.0 V Enter DCV Set -40.0 V Sine 1.000kHz MEMORY switch DOSF series...
  • Page 42 ACV Set 60.0 V DCV Set -40.0 V CV/CC OVP SET -40.0 Vdc 12.1 Adc Switc Press the [OVP SET] switch. DISP KEYLOCK OVP Set 72.0 V ➞ OCP Set 6.00 A Moni Set Period Auto OVP/OCP setting screen DOSF series...
  • Page 43 For details, refer to the instruction manual for the -LGob option. Adjusting values: Turn the VOLT/CURR setting encoder to adjust values. VOLT/CURR Setting range for OVP: Encoder 0 to rated value x 120% (Adjusting values) Setting range for OCP: 0 to rated value x 120% DOSF series...
  • Page 44 ACV Set 60.0 V Moni Set DCV Set -40.0 V Period Auto 59.9 Vmin -12.1 Amin Setting the measurement to the min. Displaying min measurement values AC value (rms) DC value Relationship between measurement settings and measurement results DOSF series...
  • Page 45 The accuracy of measurement is at 1 kHz or less. The measurement may not be done accurately at high frequencies of 20 kHz or more. This is especially true for DC measurement in AC (sine wave or square wave, etc.) voltage and current output. DOSF series...
  • Page 46 A monitor signal with 0 to ±10V proportional to the rated output current is output from the BNC terminal for the current monitor on the rear panel. The monitor will output 10V during outputting the rated output current. (Output impedance: 1kΩ) Vmoni Imoni Voltage Current monitor monitor DOSF series...

  • Page 47: Setting Sequence Operation

    3-8-2 Setting Sequence Operation 3-8-2-1 Overview of Sequence Operation Since the DOSF series is equipped with a sequence function, it enables the unit to operate continuously at the programmed output voltage (in CV mode) or output current (in CC mode).
  • Page 48 3-8-2-6 Sequence Programs and Setting be set in sequence? Parameters How to edit a sequence program? 3-8-2-7 Editing Sequence Programs How to edit steps of sequence programs? 3-8-2-8 Editing Sequence Steps How to save edited sequence programs? 3-8-2-9 Saving Sequence Programs DOSF series...
  • Page 49 Changing the program edit page while editing programs Switching between sequence program editing DISP Switching display and step editing Switching between frequency, FREQ/DUTY Not used (Do not work) phase, and duty Switching between internal EXT VCON Not used (Do not work) and external controls DOSF series...
  • Page 50 Operations and manipulations for sequence stop (output off), start (output on), and interruption Refer to [3-8-2-4 Sequence Operation State].  Sequence editing Setting and editing sequence programs and steps Refer to [3-8-2-7 Editing Sequence Programs]. Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 51 Refer to [3-8-2-5 Calling Sequence Program by Specifying its Number]. Program 1 has been already loaded. [SQC Stop] Prog 1 Loop 1 Step 1 Time 000s 000ms 0.0 Vdc 0.0 Adc Screen when shifted to the sequence operation DOSF series...
  • Page 52 003s 055ms 59.9 Vdc 12.1 Adc Screen for sequence interruption state OUTPUT LED OFF: Output off (sequence in stop) ON: Output on (sequence in operation or stop) Blinking: Output on (sequence in interruption) Output ON/OFF and LED display DOSF series...
  • Page 53 8When "Hold" is set at the setting of the sequence end, the output is maintained "ON", and in other cases, the output is turned off.) Sequence operation * OUTPUT LED: OFF Sequence stop OUTPUT ON/OFF switch OUTPUT ON/OFF switch Sequence interruption * OUTPUT LED: Blinking Run (Output ON) MEMORY switch * OUTPUT LED: ON DOSF series...
  • Page 54 Prog 1 [SQC Run] Loop count in Loop 5 Step 7 Step number in operation operation Step elapsed time in operation Time 003s 055ms DC voltage and current 59.9 Vdc 12.1 Adc measured values Screen for sequence operation state DOSF series...
  • Page 55 12.1 Adc ON: Sequence in operation (Output: ON) Pressing the [OUTPUT ON/OFF] switch, or the sequence ends. Sequence stop OFF: Sequence stop (Output: OFF) [SQC Stop] Prog 1 Loop 1 Step 1 Time 000s 000ms 0.0 Vdc 0.0 Adc DOSF series...
  • Page 56 003s 055ms Blinking: Sequence interruption 59.9 Vdc 12.1 Adc (Output: ON) Press the [MEMORY] switch. Prog [SQC Run] Loop 5 Step 7 ON: Sequence in operation (Output: ON) Time 003s 055ms 59.9 Vdc 12.1 Adc Sequence in operation DOSF series...
  • Page 57 : 10 Loop VOLT/CURR Press the [WAVE] switch. Encoder Sequence Data ………. Update After a while, the display will change. Switch [SQC Stop] Prog 3 CC Loop 1 Step 1 Time 000s000ms 0.0 Vdc 0.0 Adc Sequence stop state DOSF series...
  • Page 58 Prog : 1 Program number CV/CC Mode : CV CV/CC mode End Step : 16 End step number Loop Loop count Screen for program edit page 2 [PROG EDIT] Prog : 1 Program end setting Setting : OFF DOSF series...
  • Page 59 0.0 Adc Screen for ending the sequence program in the case of the end-setting being "HOLD" In order to turn the output off or restart a sequence program, stop the sequence (output off) by pressing the [OUTPUT ON/OFF] switch. DOSF series...
  • Page 60 When the "Step jump setting" is ON, this parameter can be set. When the set "Number of jumps" is Number of jumps* exceeded, the next step will be executed. 1 to 255 When the "Number of jumps" is set to OFF, this setting will be disregarded. DOSF series...
  • Page 61 (On-duty ratio when the AC waveform is set to a square or triangle.) Screen for step edit page 4 Step : 1 Step number [STEP EDIT] Jump setting Jump ON> Jump destination step number Jump Step No. of jump count Jump Num DOSF series...
  • Page 62 Although the step minimum time is 50ms, it can be reduced up to 10ms when the DC RAMP and AC output functions are not used. (both are set to OFF). DC RAMP: OFF DC RAMP Square waveform AC output: OFF Min. time: 50ms Min. time: 50ms Min. time: 10ms Step minimum time DOSF series...
  • Page 63 The set values for the input and cutoff phases of the basic operation will be set to the sine wave of all steps. To set the phase of the basic operation? → Refer to [3-8-1-8 Setting Phase (for Sine)/On-duty Ratio (for Square/Triangle)]. DOSF series...
  • Page 64 Encoder Program number setting (edit page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit steps without editing other sequence programs? → Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 65 Loop CV/CC mode setting (edit page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence steps without editing other programs? → Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 66 Setting the end step number (edit page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence steps without editing other programs? → Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 67 Loop Display for infinity (edit page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence steps without editing other programs? → Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 68 Encoder Program end setting (edit page 2) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence steps without editing other programs? → Refer to [3-8-2-8 Editing Sequence Steps]. DOSF series...
  • Page 69 RAMP Setting the step number (page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 70 RAMP Setting DC voltage (edit page 1) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 71 Setting the "s" in seconds for the step time (edit page 1) VOLT/CURR Encoder Step : １5 [STEP EDIT] 18.9V DCV Set Turn the encoder to Time Set 0100s000ms switch the milliseconds RAMP unit. Setting the "ms" in milliseconds for the step time (edit page 1) DOSF series...
  • Page 72 DC RAMP end. When the "DC RAMP" is set to ON, the settings of DC voltage and current are disregarded. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 73 For DC RAMP output, need to set the DC RAMP start and also (5) DC RAMP start setting set to ON. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 74 For outputting the DC RAMP, need to set the DC RAMP end and also (5) DC RAMP start setting set to ON. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 75 Changing the AC waveform (edit page 2) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 76 7.07 V ACV Set Turning encoder VOLT/CURR modifies the AC voltage Freq 1.000kHz Encoder setting. Start Phase 45 deg Changing the AC voltage (edit page 3) When outputting an AC waveform, the (7) AC waveform must be set. DOSF series...
  • Page 77 When outputting an AC waveform, the (7) AC waveform must be set. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 78 Changing the start phase (edit page 3) phase setting. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 79 Selecting on-duty ratio (edit page 3) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 80 Turn the VOLT/CURR setting encoder to change the blinking jump destination step number. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 81 Selecting a step for the jump destination (edit page 4) To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 82 Selecting "Jump Num" (edit page 4) for the number of jumps. To save a sequence program without modifying other settings? → Refer to [3-8-2-9 Saving Sequence Programs]. To edit sequence programs without editing other programs? → Refer to [3-8-2-7 Editing Sequence Programs]. DOSF series...
  • Page 83 When the edit data of a sequence program and sequence step is canceled, the saving data process will not be implemented. Once getting back to the basic operation by pressing the [MEMORY] switch for two seconds will discard the modified data. DOSF series...
  • Page 84 Program number Any of 1 to 3 CV/CC End step Loop End setting Program edit (page 1) Program edit (page 2) [PROG EDIT] [PROG EDIT] Prog : 1 Prog : 1 End Setting CV/CC Mode End Step Loop DOSF series...
  • Page 85 (The data saving screen will be displayed, and after saving data, the screen will shift to the stop state screen.) Data save Sequence stop state [SQC Stop] Prog 3 CV Sequence Data Loop 1 Step 1 Update ・・・・ Time 000s000ms 0.0 Vdc 0.0 Adc 6） Press the [OUTPUT ON/OFF] switch to start a sequence operation. DOSF series...
  • Page 86 Program number Any of 1 to 3 CV/CC End step Loop End setting Program edit (page 1) Program edit (page 2) [PROG EDIT] [PROG EDIT] Prog : 2 Prog : 2 End Setting CV/CC Mode End Step Loop DOSF series...
  • Page 87 (The data saving screen will be displayed, and after saving data, the screen will shift to the stop state screen.) Data save Sequence stop state [SQC Stop] Prog 1 CV Sequence Data Loop 1 Step 1 Update ・・・・ Time 000s000ms 0.0 Vdc 0.0 Adc 6） Press the [OUTPUT ON/OFF] switch to start a sequence operation. DOSF series...

  • Page 89: Options

    When the remote switch is short-circuited from open while the OUTPUT is OFF, the OUTPUT will be turned ON. When the remote switch is opened from short-circuited while the OUTPUT is ON, the OUTPUT will be turned OFF. In addition, sequence operation and stop are also the same. DOSF series...

  • Page 90: Interlock Function (-Ld)

    Precautions for using open collectors The following requirements must be followed when using open collectors in the remote switch and interlock functions. Requirements for open collectors Output Switch Open collector Short 0.4V or less (10mA) Open more (Open: 5V) DOSF series...

  • Page 91: Master/Slave Opetion (-Lms)

    When the configuration of master/slave units is changed, it must be readjusted at our factory. The DOSF-LMs cable is added to the standard accessories. (1 pc/set) For the usage, refer to [5 -LMs Option]. 4-4 Floating ground (-LF) Between the case and its output is possible to be floated up to 200Vdc. DOSF series...

  • Page 93: -Lms Option

    The DOSF power units operate in master/slave mode by connecting the master/slave cable to the units. For a standalone operation, do not connect the master/slave cable to the units. Master -LMs connector Master Slave 1 -LMs connector Slave1 Slave 2 -LMs connector Slave2 DOSF series...

  • Page 94: Operation Procedures

    (Refer to the following figure, "Wrong connection example".) Since the wrong connection results in failure, make sure whether or not the connection is correct. Output terminals Master Master Slave 1 Slave 1 Slave 2 Slave 2 Wrong connection example Correct connection example DOSF series...

  • Page 95: Settings

    [POWER] switch and [OUTPUT ON/OFF] switch, [OVP SET] switch, and VOLT/CURR setting encoder cannot be operated. Refer to each item in this manual about the OUTPUT operations. VOLT/CURR OUTPUT ON/OFF POWER setting switch Switch encoder Switch [Enlarged] Switch to be used in the slave unit DOSF series...

  • Page 96: Monitor

    SLAVE 1 -20.0 Adc -20.0 Adc 60.0 Vdc Curr The output current monitor value in the slave unit The output current monitor value in the master unit. [The display on the slave unit] [The display on the master unit] DOSF series...

  • Page 97: Troubleshooting

    □ Is the lock function activated? If nothing meets the above case, or if the problem is not solved after checking, please contact our sales office where you purchased the product. Please contact us for more information. DOSF series...
  • Page 99 Reservation history Rev. No. Rev. date Reveision contents 2011/11 First edition 2021/12 Applied a new format, altered wordings, and others...

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