ODA TECHNOLOGIES OPS-915, OPS-920, OPS-930, OPS-183, OPS-185 User Manual

...

www.odacore.com

Programmable DC Power Supply

OPS Series

User Manual

Manual Part NO. 018OPS-2.0

Legal Notices

© ODA Technologies.,Co.Ltd 2004 No part of this document may be photocopied, reproduced, or translated to another language without the prior another language without the prior agreement and written consent of ODA agreement and written consent of ODA Technologies.,Co.Ltd. as governed by Korea and international copyright laws.

Warranty Certification

The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, ODA disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. ODA shall not be liable for errors or for incidental or be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should ODA and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.

Assistance

This product comes with the standard product warranty. Warranty options, extended support contacts, product maintenance agreements and customer assistance agreements are also available. Contact your nearest ODA Technologies. Sales and Service office for further information on ODA Technologies. full line of Support Programs. Refer to below information.

www.odacore.com

oda@odacore.com

82-2-1800-8644

Waste Electrical and Electronic Equipment

The affixed product label (see right) indicates that you must not discard this electrical/electronic product in domestic household waste. Do not dispose in domestic household waste. To return unwanted products, contact our local ODA distributors, or call us for more information.

Manual Editions

Manual Part Number: 018OPS-2.0 Edition 2, February, 2018 Printed in ROK Reprints of this manual containing minor corrections and updates may have the same printing date. Revised editions are identified by a new printing date.

Safety Notices

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings or instructions elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. ODA Technologies assumes no liability for the customer's failure to comply with these requirements.

eneral Do Not Modify the Instrument

G Do not use this product in any manner not specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions.

Do not install substitute parts or perform any u nauthorized modification to the product. Return the product to an ODA Sales and Service Office for service and repair to ensure that safety features are maintained.

round the Instrument

G This product is a Safety Class 1 instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument unintended o chassis and cover must be connected to an qualified service personnel. electrical ground. The instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Any attention to an operating procedure, practice, or interruption of the protective (grounding) the like that, if not correctly conductor or disconnection of the protective to, could result in damage to the product or loss earth terminal will cause a potential shock hazard that could result in personal injury. C Before Applying Power are fully understood and met. Verify that all safety precautions are taken. Make all connections to the unit before W applying power. Note the instrument's A WARNING notice denotes a hazard. It calls external markings described under attention to an operating procedure, practice,

Fuses death. Do not proceed beyond a WARNING The instrument contains an internal fuse, which notice until the indicated conditions are fully is not customer accessible.

n Case of Damage

I Instruments that appear damaged or defective should be made inoperative and secured against

eration until they can be repaired b

AUTION

AUTION notice denotes a hazard. It calls

A C

erformed or adhere

of important data. Do not proceed beyond a

AUTION notice until the indicated conditions

ARNING

rofrep yltcerroc ton fi ,taht ekil eht ro "slobmyS ytefaS" med or

adhered to, could result in personal injury or

understood and met.

o Not Operate in an Explosive Atmosphere Do not operate the instrument in the presence of flammable gases or fumes.

o Not Remove the Instrument Cover Only qualified, service-trained personnel who are aware of the hazards involved should remove instrument covers. Always disconnect the power cable and any external circuits before removing the instrument cover.

Safety Symbol

Direct current

Both direct and alternating current Three phase alternating current

Earth (ground) terminal

Frame or chassis terminal

Neutral conductor on permanently installed equipment

Alternating current

Protective earth ground terminal.

Terminal is at earth potential.

Line conductor on permanently installed equipment.

Standby supply. Unit is not completely disconnected from ac mains when switch is off

Out position of a bi-stable push switch

Caution, hot surface

ylppus ffO ylppus nO

In position of a bi-stable push switch

Caution, risk of electric shock

Caution, refer to accompanying documents

CONTENTS

Default Setti

1. General Information

1-1. Feature

General Feature

emote Interface Calibration Factory Option Cycling Mode Self Testing

---------------------------------------------

--------------------------------------

1-2. Accessories and Options

Accessories O

tions

1-3. Check

Instrument Check electrical Check

1-4. Operating Conditions

------------------------------------------------

-------------------------------------

1-5. Check Before Power On

Output Terminal check Power Cord check Input Power Line Check

1-6. Check After Power O

Display Procedure on the LCD

ng Values

1-7. Installation

Cooling Bench Operation Rack Mounting

---------------------------------------------

-------------------------------------

---------------------------------

-----------------------------------

6 6

2. Front Panel, Rear Panel Composition & Function

2-1. Front Panel Voltage & Current Setting 2-2. Display & Condition Indicator LAMP 2-3. Rear Panel Composition 2-4. Output Check

Voltage Output Check Current Output Check

-------------------------------------------

-----------------------------------

- 2 -

----------------------

------------------------

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14 17

18 19 20

3. Front Panel Operating

33. Remote Voltage Sensing

3-5. P

(OCP)

37. KEY LOCK

LMT DISPLAY Function

SEQUENCE Number input

-------------------------------------- 21

Over view 3-1. Constant Voltage Operating(CV) 3-2. Constant Current Operating(CC)

CV Regulation Output Rating Output Noise Stability Connecting Remote Voltage Sensing

-----------------------------------

---------------------------

3-4. Programming Over Voltage Protection(OVP)

rogramming Over Current Protection

3-6. I/O Config & LOCAL

RS232C Setting RS232C Setting(Option)

GPIB Setting GPIB Setting(Option)

---------------------------------------------

3-8. STORE / CALIBRATE 3-9. RECALL / FACTORY 3-10. OUTPUT ON/OF 3-11. V/I & LMT DISPLAY

V/I Function

--------------------------------------

----------------------------------------

--------------------------------------

-----------------

22 23

37 38 38 39

3-12. CYCLING MODE

Feature Preparing Record Table STEP STEP Setting SEQUENCE

REPEAT REPEAT input RUN / STOP

RUN / STOP Proceed

3-13. ERROR

ERROR Check

3-14. ESC

------------------------------------------------

---------------------------------------------------

----------------------------------------

- 3 -

4. CALIBRATION

44. Calibration Technique

Positioning Calibrating Location

4-6. Calibration(for GPIB) Using REMOTE INTERFAC

4-1. Function 4-2. Preparing for Detailed Setting

---------------------------------------------

------------------------------------------------

-------------------------------48

4-3. Required Efficiency for Detailed Settin

Instrument Connection Electronic Load Current-Monitoring Resistor(shunt) DVM(Digital Volt Meter)

Programming

--------------------------------------

----------------------

48 48

4-5. Calibration Using Front Panel

CALIBRATE KEY Structure CALIBRATE Setting Area Voltage CALIBRATE Operating Current CALIBRATE Operating

Conneting Instrument Remote Calibration Command Sequence Voltage CALIBRATE Operating Current CALIBRATE Operating

5. FACTOR

5-1. Feature

------------------------------------------------

5-2. FACTORY KEY Structure 5-3. CYCLING CLEAR

CYCLING CLEAR Operating

5-4. USER-MEM CLEAR

USER-MEM CLEAR Operating

5-5. CALI-RESTOR

CALI-RESTORE Operating

5-6. CALI-BACKUP

CALI-BACKUP Operating

----------------------------------------

--------------------------------------

-------------------------------------------

---------------------------

---------------

-----------------------------------

59 59

- 4 -

6. SCPI Command

64. Output Voltage & Current & Operating Commands

7-5. Calibrati

-------------------------------------------

6-1. Commands Synta 6-2. Commands

Output Setting Commands Measurement Commands Calibration Commands Factory Commands System Commands

6-3. Apply Comman

---------------------------------------------

-------------------------------------------

6-5. Measure Commands 6-6. Calibration Comman 6-7. Factory Comman 6-8. System Command

----------------------------------------

------------

-------------------------------------

----------------------------------------

63 63

69 70 71 71

7. Error Messages

7-1. Running Error 7-2. Hardware Error

-------------------------------------------

7-3. Remote Calibration Erro 7-4. Cycling Mode Err

on Erro

----------------------------------------

7-6. Fixed Memory Check Error 7-7. Interface Commands Error

8. Option

8-1. Analog Input 8-2. Rear Output

9. Specifications

-------------------------------------------

-----------------------------------

--------------------------------

75 75

75 76 77

78 78

80 80

10. Caution

------------------------------------------------

- 5 -

1. General Information

instrument) protocol. In addition, It is designed to be equipped in 3U*19inch Half-Rack

▌

▌Insulation with instrument & Floating Logic realization

▌Store Voltage, Current, Slope time, Delay time each step up to 100 slots

▌

1-1. Feature

ODA Technologies's OPS-Series are high efficiency, high performance programmable DC power supply RS232C & GPIB(IEEE-488.2) interface based on SCPI (Standard Commands for Programmable

General Functional Features

▌Simple setting using jog & shutttle.

▌Output voltage, current block & restore function (Output ON/OFF) ▌Front panel's key lock function ▌Caution alarms on events

High accuracy & High limit of resolution ▌Built-in Remote Sensing for Load Voltage(V-Sensing) ▌Over Voltage Protection(O.V.P) / Over Current Protection(O.C.P) Secure Function ▌Excellent Load Regulation & Line Regulation ▌Operating condition(Voltage,Current,OVP,OCP) Store & Recall up to 10 slots. ▌Store Error message (up to 10 messages) ▌3U * 19inch Half-Rack compatible

Remote Interface Features

▌GPIB(IEEE-488.2) & RS232C Interface ▌SCPI(Standard Commands for Programmable Instruments) compatible ▌High speed setting & measument ▌plenty of Commands equipped ▌Simple interface setting using front panel I/O config ▌Insulation with instrument & Floating Logic realization ▌SCPI programming grammatical order check options equipped

Calibration Features

▌adopted Software Calibration do not requires inside correction ▌Simple calibration operating using Independence or PC Interface

Factory Function Features

▌Initialization memory function up to 10 memories ▌Initialization mamory function up to 100 cycling mode memories ▌Calibration restoration function ▌Calibration back up function

Cycling mode Features

▌Operating realization by instrument itself ▌Safe storation used by permanent memories

▌Cycling mode tests available using sequence panel

Self Test Features

▌Front panel Test ▌ADC H/W Error Test ▌Remote interface Test ▌UnRegulated condition Test

Memory data verification Tes▌ADC/DAC Calibration verification Test

- 6 -

1-2. Accessories and Options

Function that blocks Voltage/Current in OUTPUT OFF Mode

Accessories

▌1 Power Cord ▌Output load (+), (-) 1 each. (Part number : OE-LW-BCW-2.0) ▌2 pcs metal short-bar for voltage sensing. (Part number : OM-S20) ▌1 User's Manual ▌DEMO Software CD (Windows application manual included)

Option

▌GPIB Module ▌GPIB Calbe 1M, 2M, 4M ▌RS232C Cable 1M, 2M, 4M, 10M

▌100V ± 10% , 50~60Hz AC input power ▌115V ± 10% , 50~60Hz AC input power ▌230V ± 10% , 50~60Hz AC input power ▌Rear output ▌Rack mount support ▌Block system when it is overlapped.

Function that blocks Voltage/Current in "**OUTPUT OFF**" Mode.

- 7 -

1-3. Check

Technologies in the future. If you return the power supply for service, attach a tag

▌Check the panel surfaces are free of dents and scratches

▌Wh

ODA

▌

▌Relative Humidity : Less than 80%

When you receive your power supply, inspect it for any obvious damage that may have occurred during shipment. If any damage is found, notify the carrier and the nearest ODA Sales Office immediately. Warranty information is shown in the front of this manual. Keep the original packing materials in case the power supply has to be returned to ODA

identifying the owner and model number. Also include a brief description of the problem.

Mechanical Check

▌Check the broken key, encoder switch, power switch. ▌Check the broken output terminals.

. ▌Check the cabinet is free of scratches. ▌Check the LDC display is not scratched or cracked.

Electrical Check

en turning on the power, it shows instrument model and

▌Check the model Number is matched with displayed model number.

website at first.

▌After, it shows "**OUTPUT OFF**" message, verifies to a high level of confidence that the power supply is operating in accordance with its specifications.

Note

Service Center : 82-32-623-5454 Home page : www.odacore.com

1-4. Operating Conditions

This instrument is designed for following environmental conditions in other to use optimized condition

▌Environment Temperature : 0 ∼ 40℃

Relative Humidity : Less than 80% ▌Operating Altitude : Less than 2000m ▌No Vibration ▌Avoid Electric Magnetic Field

- 8 -

1-5. Check Before Power On

electric shock hazard to the operator

and the worker

Output Terminal Check

▌Check the front panel two fixed outputs two variable output terminals and GND terminal.

Metal Short-bar

WARNING

Floating the power supply output more than ±60 Vdc from the chassis presents an

WARNING

If metal short bar that is su floated. Please make sure that there should be no contact between insulated output termin

insulate-bar

lied from our company excluded, maximum ±240Vdc output c

- 9 -

Power Cord Check

▌In other to prevent the instrument severe damage from overload, fuse is installed

▌Your power supply is equipped with a 3-wire grounding type power cord; the third conductor being the ground. The power supply is grounded only when the powerline cord is plugged into an appropriate receptacle. Do not operate your power supply without adequate cabinet ground connection.

Input Power Line Check

▌You can operate your power supply from a nominal 198~242 V single phase ac power source at 47 to 63 Hz. AC100V, 110V, 115V, 230V input power is optional.

Refer to chapter "1-2. Accessories & Options"

in inlet case. If the fuse is also repeatedly when power turns on, check the input power line or broken braker and then call to nearest ODA Technologies A/S Center Input power connection is following.

- 10 -

1-6. Check After Power On

▌Output Voltage : 0V

▌Cursor Location : Default Voltage Select

pppypp

When turning on the power switch, the front-panel display will light up briefly while the instrument performs its power-on default value setting. And also keep the ex-remote interface setting mode, voltage value is zero and current value is max value. OVP & OCP will be set on maximum output value.

Display Procedure on LCD

▌Homepage "WWW.ODACORE.COM" will be displayed.

Visit our homepage and we will provide various service and info about upgrading, manual and software.

▌Also, Front lamp OVP, OCP, LOCK, RMT will be all lighted.

CV & CC are not included.

▌"INITIALIZING. . ." Message will be displayed.

There will be a reset using non-volatile memory.

▌Also, Front lamp OVP, OCP, LOCK, RMT lights will be turned off.

CV & CC are not included.

▌"SELF-TESTING. . ." Message will be displayed.

While self-testing, message below will be displayed. Front panel Tes Remote interface Test Check Remote interface for PC network Memory data verification Test Check Instrument's info & setting ADC H/W error Test Check ADC controlling UnRegulated condition Test Check Output voltage Floating ADC/DAC Calibration Test Check ADC & DAC Calibration Data

When an error occurs, there will be a alarm sound from instrument, and error No will be stored.

Check Front panel's connection

Press Key to check error code.

Please read “7. Error Messages” to check details about error code.

Default Setting Value

▌OVP : OVP Max value, OVP setting ON ▌Remote Interface : maintain previous setting ▌OCP : OCP Max value, OCP setting ON

▌Output Current : Limit setting max value Voltage : 1V scale ▌KEY LOCK : OFF Current : 5A > 100mA scale

▌Condition after Self-testing : "**OUTPUT OFF**"

50A > 1A scale

Note1

The RS232C is attached in the instrument when the power supply is shipped from the factory for remote interface configuration and baudrate is set 9600bps at first time. In case of choosing RS485 interface, address no. is 05 when this is shipped from the factory.

Note2

It has the option function that is last setup stated memory & recall. This function, when you turn down the instrument, the device store the last state(voltage, current and state) and after then the operator turn on again, this starts from last state.

- 11 -

1-7. Installation

40 °C

pply by d

▌Y

ppl

fficient sp

Cooling

▌The power supply can operate without loss of performance within the temperature range of 0 °C to 40 °C, and with derated output current from

to 55 °C. A fan cools the power su panel and exhausting it out the sides. Using an ODA rack mount will not impede the flow of air.

Draft

rawing air through the rear

Bench Operation

our power su

at the sides and rear of the power supply for adequate air circulation.

y must be installed in a location that allows su

ace

Rack Mounting

▌It is designed to be compatible in 3U * 19inch, please desort bumper (diagram below)

- 12 -

▌It is convenient to equip OM-3U19-FS(Option) supported by Power Supply indenpence on the rack.

▌It is convenient if you equip power supply double on a rack with OM-3U19-FD(option).

▌It is simpler to use instrument if you use inside cabinet & slider OM-3U19-SS(Option).

- 13 -

2. Front Panel, Rear Panel Composition & Function

Restore memory save slot or Factory Key

+ output terminal

13 Cycling mode s RUN/STOP Key

Over Voltage Protection Key Error message Display Key

114

Over Current Protection Key

215

I/O CONFIG or LOCAL Key

316

LOCK Key

417

Store present condition or Calibration K

518

Restore memory save slot or Factory Ke Output Voltage/Current ON/OFF

720

Choice Voltage/Current or Limit Display

821 922

Cycling mode's STEP setting Key

Cycling mode's Sequence control Key

Cycling mode's repeating Key

cling mode's RUN/STOP Ke

Menu Escape Key Voltage/Current Cursor or Menu Key Main Power ON/OFF Switch Remote V+ Sensing Input terminal

+ out

- output terminal Remote V- Sensing Input terminal Earth GND terminal Voltage/Current/Numbering Encorder Sw

ut terminal

- 14 -

1. Over Voltage Protection Key

Over voltage protection function. On/Off selectable, able to change OVP Level value.

2. Over Current Protection Key Over current protection function. On/Off selectable, able to change OCP Level value.

3. I/O CONFIG or LOCAL Key Configures the power supply for remote interfaces. Set baudrate of RS232C. If remote interface is RS485, it can be used for setting baudrate & address. Also under Remote Interface situation, in other to recover bench top using, this key operate to local from remote.

4. LOCK Key Lock/Unlock Key on the Front panel

5. Store current condition or Calibration Key Store Voltage, Current, OVP / OCP Setting value. Press Power button while holding this key. Th lead you in Calibration mode, voltage/current Calibration.

6. Memory save slot restoration or Factory Key Saved Voltage, Current, OVP/OCP Setting value can be a while holding this key. This will lead you in Factory mode, which allows you to restore or reset calibration.

lied to instrument. Press Power but

7. Output Voltage/Current ON/OFF Enables or disables the power supply output. This key toggles between on and off.

8. Voltage/Current select or Limit Display Key Shows voltage and current limit values on the display and allows knob adjustment for setting limit values.

9. Voltage/Current Cursor or menu changing key Move the blinking digit to the left. In the menu mode, it can change menu tree. Under the **OUTPUT OFF** mode, this key work on recall key.

10. Cycling mode's STEP setting Key Appoint 1~100 slots, Set Voltage, Current, Slope Time and Delay Time.

11. Cycling mode's Sequence control Key Setting repeating panels from ( )slot to ( )slot.

12. Repeating setting key of Cycling mode Setting No. of repetition.

13. Cycling mode's RUN/STOP Key Operate or Cancel Cycling mode after setting 10 → 11 → 12.

- 15 -

14. Error message Display Key

gggy

When error occurs from Self-testing, Alarm sound will come out from the instrument, and will b up to 10 memories slot

15. Menu Escape Key Canceling while in the Menu.

16. Voltage/Current Cursor or menu changing Key Move the blinking digit to the left. In menu mode, it can change menu tree. Under the "**OUTPUT OFF**" mode, this key work on store key.

17. Voltage/Current Cursor or menu changing Key Move the blinking digit to the left. In menu mode, it can change menu tree. Under the "**OUTPUT OFF**" mode, this key work on store key.

18. Main Power ON/OFF Switch This switch allows to disable AC Power.

19. Remote V+ Sensing input terminal + Output Voltage sensing input terminal

20. + Output terminal + Output terminal.

21. - Output terminal

- Output terminal.

22. Remote V- sensing input terminal.

- Output Voltage sensing input terminal.

23. Earth GND terminal GND terminal, it is able to connect to earth terminal of the DUT

- 16 -

2-1. Front-Panel Voltage & Current Setting

Use the method below to change limit value of voltage and current.

1. Check "**OUTPUT OFF**" When the instrument turned on

2. Press V/I & LMT DISPLAY key to switch Limit Mode.

3. Press key to select Voltage and Current

4. To select incresing or decreasing digit, press or and position cursor key.

5. In other to increase limit value, turn the encoder clockwise. In other to decrease limit value, turn the encoder anti-clockwise.

6. Confirm the change of setting value at VFD Display

7. In other to output the setting voltage & current, press key.

Note1

If there is a problem in "Self-test" Press key to confirm the error code.

Please check "7. Error Messages" for Error code.

Note2

When press key, disappear the message of "**OUTPUT OFF**" and then change to limit

display state, and cursor is blinking. At that time, if let the display time-out after 3 seconds,

**OUTPUT OFF** display at the LCD.

Note3

If it is under remote control, key and encoder switch on the front panel won't operate.

If turning to local mode from remote control, press key to change to local mode.

- 17 -

2-2. Display & Condition Indicator LAMP

4 LOCK

5 RMT

VFD

OVP

OCP

Voltage Current & Message Display module

OVP Setting mode "Brightened bulb"

OCP Setting mode "Brightened bulb"

When it is

the light will go out and ables Key & Encoder.

In other to switch the dis

while the light bulb is ON.

Lights ON while Constant Voltage Mode.

Lights ON while Constant Current Mode.CC

ressed, Key & Encoder will disabled, when it is pressed onc

lay to Local, set Remote Interface and press k

Note

When the instrument turned on the first time, OVP, OCP, LOCK, RMT LAMP will lightened for 300ms and will be turned off. CV & CC are not included.

- 18 -

2-3. Rear Panel Composition

Fuse Holder

AC inlet

3 GPIB (IEEE-488) interface connector

RS-232C interface connector4

Power-line module

PC Interface Method

Press key on the front panel in other to set PC interface.

("Refer to chapter 3-3. I/O Config & LOCAL")

- 19 -

2-4. Output Check

prop

Press the

key and move the blinking cursor to voltage value

Set the current upto 5A by using encoder switch

clockwise

The following procedures check to ensure that the power supply develops its rated outputs an

erly responds to operation from the front panel. Forr complete performance and verificatio

refer to belows procedure.

Voltage Output Check

▌The following steps verify basic voltage functions with no load.

1. Turn on the power supply

2. The output is disabled (the OUTPUT OFF annunciator turns on)

3. In other to measure the voltage, connect the DVM to output terminals properly

4. Press the key in other to output the voltage.

6. Press the key and select the voltage resolution what you want.

7. In other to increase or decrease, turn on the switch CW or CCW.

8. Compare between LCD display real voltage value and DVM annunciator.

Current Output Check

▌The following steps check basic current functions with a short across the power supply's output.

1. Turn on the power supply

2. The output is disabled (the OUTPUT OFF annunciator turns on)

3. Press the key in other to output the current.

4. Press the key and move the blinking cursor to current value.

5. Press the key and select the current resolution what you want.

7. Press the key in other to output the current.

8. Compare between LCD display real current value and DAM annunciator.

- 20 -

3. Front-Panel Operating

6. I/O Config & LOCAL

So far you have learned how to install your power supply and perform initial operation. During the initial operation, you were briefly introduced to operating from the front panel as you learned how to check basic voltage and current functions. This chapter will describe in detail the use of these front panel keys and show how they are used to accomplish power supply operation.

Overview

1. Constant Voltage (CV)

Explanation about constant voltage output mode operation.

2. Constant Current (CC)

Explanation about constant current output mode operation.

3. Remote Voltage Sensing

Explanation about load's voltage sensing.

4. Programming Over Voltage Protection(OVP)

Explanation about over voltage protection.

5. Programming Over Current Protection(OCP)

Explanation about over current protection.

Explanation about remote interface setting and recovering to local mode.

7. KEY LOCK

Explanation about Front panel's locking function.

8. STORE / CALIBRATE

Explanation about User memory store.

9. RECALL / FACTORY

Explanation about how to use & apply the stored 『user memory』store.

10. OUTPUT ON/OFF

Explanation about the output disable or enable.

11. V/I 및 LMT DISPLAY

Explanation about voltage/current select or limit display.

12. CYCLING MODE

Explanation about Cycling mode.

13. ERROR

- 21 -

3-1. Constant Voltage Operating(CV)

▌

▌Connect the DUT to output terminals.

play

▌Pl

OUTPut[:STATe] {OFF|ON|0|1}

To set up the power supply for constant voltage (CV) operation, proceed as follows.

▌Turn ON the power supply

After turned on, check the power supply displays "**OUTPUT OFF**" .

Connect the DUT to output terminals.

▌In other to set the limit value, press the LMT key.

▌Adjust the knob & resolution button for the desired voltage limit.

▌Move the cursor to current.(Press the V/I Key once more)

▌Adjust the knob & resolution button for the desired current limit.

▌Enable the output.(Press the output ON/OFF key.) After about 2.5 seconds later, power supply changes to readback display from limit dis

ease check CV lamp is on, CC lamp is off. If it is on and off opposite, check the load giving enough current, and raise current limit value.

≫ Related Remote Interface Command

[SOURce:]VOLTage{<voltage>|UP|DOWN} [SOURce:]CURRent{<current>|UP|DOWN}

Refer: OUTPUT OFF Block output

VOLT 10 Set voltage 10V CURR 5 Set current 5A OUTPUT ON Output Voltage & Current

Note

1. Select scale of increasing or decreasing voltage & current using cursor key.

2. ReadBack Display? It refers to displaying voltage & current 's output.

- 22 -

3-2. Constant Current Operating(CC)

After turned on, check the power supply displays

OUTPUT OFF

play

[SOURce:]CURRent{<

t>|UP|DOWN}

To set up the power supply for constant current (CC) operation, proceed as follows.

▌Turn on the power supply

"**

▌Connect the DUT to output terminals

▌In other to set the limit value, press the LMT Display key.

▌Adjust the knob & resolution button for the desired voltage limit.

▌Move the cursor to current.(Press the V/I Key once more)

▌Adjust the knob & resolution button for the desired current limit.

**"

≫ Related Remote Interface Command

[SOURce:]VOLTage{<voltage>|UP|DOWN}

OUTPut[:STATe] {OFF|ON|0|1}

Application :

▌Enable the output.(Press the output ON/OFF Key. After about 2.5 seconds later, power supply changes to readback display from limit dis

▌Check the CC annunciator is lit If the CC annunciator turn off of twincle, choose a higher voltage limit.

curren

OUTPUT OFF Block output VOLT 10 Setting voltage 10V CURR 5 Setting current 5A OUTPUT ON Voltage & Current OUTPUT ON

- 23 -

3-3. Remote Voltage Sensing

and power supply will be unregulated mode. Also, when each load leadline rise more than 1

When a electric load is connected from power supply's output terminal, voltage regulation will from output terminal. Therefore, to supply accurate power to load, Remote Voltage Sensing (V-Sensing) can be used. Please read below to use V-sensing correctly.

CV Regulation

Specification's voltage Load Regulation attribute. While using V-Sensing, because of the change from current, 5mV should be added to this between+S Point and +output terminal. Because, sensing lead line is power supply's feedb It will stable when the resist value is below 0.5Ω.

Output Rating

Please read below about specification's output voltage & current. When you use V-Sensing, the load leadline's voltage drop point will be added to it's load. Therefore if you

the instrument will be unregulated not related to maximum voltage.

rint out more than maximum voltage, V-sensing mode will not guarantee

Note

What is UnRegulated mode? Disabled power supply's CC and CV

Output Noise

Noise from power supply's output can lead to a serious problem in Load Regulation. Please follow the steps below :

▌twist sensing leadlines togeter to decrease noise from outside. ▌connect in a straight line with sensing leadline, when it's near load leadline. ▌cover sensing leadline when it's disclosed. ▌Noise cover equipment should be connected to GND in the closest location.

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ODA TECHNOLOGIES OPS-915, OPS-920, OPS-930, OPS-183, OPS-185 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual