ODA LP Series User manual

Programmable DC Electronic Load
User Manual
www.odacore.com
LP Series
Manual Part NO. 018LP-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
[email protected]
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: 018LP-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.
understood and met.
of flammable gases or fumes.
Do not operate the instrument in the presence
Do Not Operate in an Explosive Atmosphere
is not customer accessible.
rofrepyltcerroctonfi,tahtekilehtro"slobmySytefaS" med or
adhered to, could result in personal injury or
The instrument contains an internal fuse, which notice until the indicated conditions are fully
removing the instrument cover.
the power cable and any external circuits before
remove instrument covers. Always disconnect
are aware of the hazards involved should
Only qualified, service-trained personnel who
Do Not Remove the Instrument Cover
Fuses death. Do not proceed beyond a WARNING
Make all connections to the unit before WARNING
applying power. Note the instrument's A WARNING notice denotes a hazard. It calls
external markings described under attention to an operating procedure, practice,
of important data. Do not proceed beyond a
hazard that could result in personal injury. CAUTION notice until the indicated conditions
Verify that all safety precautions are taken.
CAUTION
Before Applying Power are fully understood and met.
(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
p
erformed or adhere
d
conductor or disconnection of the protective to, could result in damage to the product or loss
earth terminal will cause a potential shock
A CAUTION notice denotes a hazard. It calls
In Case of Damage
Instruments that appear damaged or defective
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
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
Ground the Instrument
This product is a Safety Class 1 instrument
(provided with a protective earth terminal).
wire firmly connected to an electrical ground
features are maintained.
General Do Not Modify the Instrument
Do not use this product in any manner not
To minimize shock hazard, the instrument unintended o
p
eration until they can be re
p
aired b
y
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.
should be made inoperative and secured against

Safety Symbol
Out position of a bi-stable
push switch Caution, risk of electric shock
Caution, hot surface Caution, refer to accompanying
documents
ylppusffOylppusnO
Standby supply. Unit is not
completely disconnected
from ac mains when switch
is off
In position of a bi-stable push
switch
Direct current
Earth (ground) terminal
Frame or chassis terminal
Protective earth ground terminal.
Alternating current
Both direct and alternating current Three phase alternating current
Terminal is at earth potential.
Neutral conductor on
permanently installed
equipment
Line conductor on
permanently installed equipment.

1-1. Feature
--------------------------------------------------------
1
General Feature
Remote Interface Characteristics
Calibration
Factory Function
1-2. Accessories and Options
--------------------------------------------------------
2
Accessories
Option
1-3. Inspecting the Unit
--------------------------------------------------------
3
Instrument Check
Electrical Check
1-4. Operating Conditions
--------------------------------------------------------
3
Check Before Power On
--------------------------------------------------------
4
Output Terminal Check
Input AC Power Line Check
1-6. Check After Power On
--------------------------------------------------------
4
Display Procedure on the LCD
Default Setting Values
1-7. Installation
--------------------------------------------------------
5
Cooling
Bench Operation
Rack Mounting
2-1. Front Panel Setting
--------------------------------------------------------
6
2-2. Rear Panel Composition
--------------------------------------------------------
10
2. Front Panel, Rear Panel Composition & Function
1. General Information
CONTENTS

Overview
-------------------------------------------------------------------------------------
12
3-1. IN ON/OFF
-------------------------------------------------------------
14
3-2. Constant Current Operating (CC)
-------------------------------------------------------------------------------------
15
3-3. Constant Resistance Operating (CR)
-------------------------------------------------------------------------------------
16
3-4. Constant Voltage Operating (CV)
-------------------------------------------------------------------------------------
17
3-5. IO/Local
--------------------------------------------------
18
RS232C Setting
RS232C Configuration
RS485 Setting
RS485 Configuration
USB Setting
3-6. Range
----------------------------------------------------
23
3-7. Save
----------------------------------------------------
24
3-8. Recall
----------------------------------------------------
25
3-9. ESC
-------------------------------------------------------
26
3-10. DYNAMIC ON/OFF
--------------------------------------------
27
3-11. SLEW
-------------------------------------------------------------------------------------
29
3-12. A-Memory
-------------------------------------------------------------------------------------
30
3-13. B-Memory
-------------------------------------------------------------------------------------
31
3-14. Dynamic Cycling Time / Duty
-------------------------------------------------------------------------------------
32
3-15. SHORT
-------------------------------------------------------------------------------------
34
3-16. CYC RUN
-------------------------------------------------------------------------------------
35
3. Front-Panel Operating

3-17. STEP
-------------------------------------------------------------------------------------
36
STEP NUMBER
MODE Set
VALUE SETTING
SLOPE TIME SETTING
DELAY TIME SETTING
3-18. REP (REPEAT)
-------------------------------------------------------------------------------------
42
3-19. SEQ (SEQUENCE)
-------------------------------------------------------------------------------------
43
START NUMBER
FINISH NUMBER
3-20. FUSE RUN
-------------------------------------------------------------------------------------
45
3-21. FUSE STEP
-------------------------------------------------------------------------------------
46
FUSE TIME
FUSE CURRNET
3-22. Error Message Display
------------------------------------
48
3-23. Protection
-----------------------------------------------
49
3-24. Remote Voltage Sensing
-------------------------------------------------------------------------------------
50
4. CALIBRATION
4-1. Characteristics
-------------------------------------------------------------------------------------
51
4-2. Preparation for Calibration
-------------------------------------------------------------------------------------
51
4-3. Equipment required for Calibration
-------------------------------------------------------------------------------------
52
4-4. Technic of Calibration
-------------------------------------------------------------------------------------
52
Instruments Connection Drawing
Electronic Load
Current-Monitoring Resistor(shunt)
DVM(Digital Volt Meter)
4-5. Using Front Panel Calibration
-------------------------------------------------------------------------------------
53
Current Calibration
Voltage Calibration

4-6. Remote Interface Calibration
-------------------------------------------------------------------------------------
60
Current Calibration
Voltage Calibration
5-1. Characteristic
-------------------------------------------------------------------------------------
63
5-2. FACTORY KEY Structure
-------------------------------------------------------------------------------------
63
5-3. USER-MEM CLEAR
-------------------------------------------------
64
5-4. LAST STATE
-----------------------------------------
65
5-5. AUTO KEY LOCK
-----------------------------------------
66
5-6. CAL-DEFAULT
--------------------------------------------
67
5-7. CAL-RESTORE
--------------------------------------------
68
5-8. CAL-BACKUP
-------------------------------------------------
69
5-9. LOAD DEFAULD
-------------------------------------------------
70
6-1. Commands Syntax
-----------------------------------------
71
6-2. Commands
-------------------------------------------------
71
7-1. Operating Error
-------------------------------------------------
89
7-2. Hardware Error
-------------------------------------------------
89
7-3. Remote Calibration Error ------------------------------------ 89
7-4. Calibration Error
-------------------------------------------------
91
7-5. Nonvolatile Memory Check Error
-------------------------------------------------
91
7-6. Interface Commands Error
-------------------------------------------------
92
7. Error Messages
5. FACTORY
6. SCPI Command

LP Series is a highly efficient, programmable electric load (300W~1500W Capacity).
It has RS-232C, RS-485, USB Remote control interface based on SCPI Protocol.
(Standard Commands for Programmable Instruments)
General Feature
▌Easy-to-use knob control settings.
▌Big size 20Char LCD Display
▌Output ON/OFF Key.
▌Front panel Key Lock function
▌Alarm beep when events occur
▌Excellent precise and high resolution.
▌Built-in Remote Sensing for Load Voltage(V-Sensing)
▌O.V.P(Over Voltage Protection) / O.P.P(Over Current Protection)
▌O.T.P(Over Temperature Protection mode supplied.
▌Excellent load and line regulation
▌Save and confirm up to 10 error messages.
▌Memory(operating state of voltage, current, OVP,OCP,OTP) store and recall available up to 10.
▌3U * 19inch half Rack Compact Size(300W, 600W)
Remote Interface Characteristics
▌RS232C, RS485, USB
▌SCPI(Standard Commands for Programmable Instruments) adopted.
▌High speed setting & measurement
▌Programmed in abundant commands in the instrument.
▌Easy interface setting by front panel key of "I/O config".
▌Technical realization of products insulation & Floating Logic.
▌Built-in the checking of SCPI programming grammar error.
Calibration
▌No need of opening cover and instrument for calibrating and adopting software calibration.
▌Easy calibration operating by using independence or PC Interface
Factory Function
▌Initial function of 10 user memory.
▌Last state memory store and recall function (output on/off, voltage & current value and etc.).
▌The function of "Auto Key Lock & Auto cursor Move" that prevents operator's mistake.
▌Calibration restore function
▌Calibration backup function
1-1. Feature
- 1 -
1. General Information

Accessories
▌1.5M Output cable 1 pc
▌Rack mount
▌Voltage Sensing Short bar 2 pc
▌User's Manual 1 pc.
Option
▌RS232C Cable 1M, 2M, 4M
▌RS485 Cable 2/4/8-Channel 1M, 2M, 4M, 10M
▌AC Input Cable (Special order type)
▌Output Cable (Special order type)
- 2 -
1-2. Accessories and Option

When you receive your electric load, 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 the manual.
Keep the original packing materials in case the electric load has to be returned to ODA
Technologies in the future. If you return the electric load for service, attach a tag
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 panel surfaces are free of dents and scratches.
▌Check the broken rear output terminals.
▌Check the cabinet is free of scratches.
▌Check the LCD display is not scratched or cracked.
Electrical Check
▌Initial Display message is ODA Technologies and Model Name.
▌If "**OFF-ISET**" Message is displayed, Please check other specifications.
Service Center : 82-70-5032-2926/2928
Home page : www.odacore.com
This instrument is designed for following environmental condition for using optimized condition.
▌Environmental Temperature : 0 ∼ 40℃
▌Relative Humidity : ≤80%
▌Operating Altitude : ≤2000m
▌No vibration
▌Avoid the electric magnetic field.
Note
1-3. Inspecting the Unit.
1-4. Operating Conditions
- 3 -

Power Cord Check
▌Provided power cord is 3-wire ground type.
If you use power cord from other brand, use Ground type.
And connect the power supply earth to load's GND.
Input AC Power Line Check
▌Product is designed for single phase AC 220V ±10% / 50~60Hz.
You can Set another input option.
Turn on the power and load will be set in the previous setting value.
Display Procedure on the LCD
▌Display "ODA Technologies"
▌Display "LP"
▌Annunciators of ERR, LMT, RMT, LOCK on front side are lit and go off.
▌During displaying above procedure, the instrument is initialized by stored in non-
volatile memory.
Default Setting Values (Last State Mode is under the disable state)
▌Remote Interface : RS-232C
▌A Memory : CC-0A, CV-0V
▌After Power On : "**OFF - ISET**"
▌B Memory : CC-0A, CV-0V
▌Voltage, Current Value : 0
▌Dynamic DUTY: 50%
▌Resistor: Minimum of Low Range ▌Dynamic DYN-CYCLING TIME: 0.0001s
▌Range: Low Range ▌STEP: 1
▌ KEY LOCK : OFF ▌REPEAT: 1
▌SLEW : 1 ▌SEQ: START No. 1, Finish No. 100
1.Initially, Remote Interface is RS232C, Baud-rate is 9600bps.
2.Last State Mode is "SAFETY". You can change the setting in Factory Mode.
Note1
1-6. Check After Power On
1-5. Check Before Power ON
- 4 -

Cooling
▌Load's quality is guaranteed in the circumstances of 0℃ ~ 40℃.
If you use 40℃ ~ 55℃ circumstances, please lower the output current to 0~70% of
maximum current.
If you use load by installing in the rack, please keep attention to ventilation.
<Figure 1-4 Bottom view>
Bench Operation
▌Load must be installed in a location that allows sufficient space at the sides
and rear of the load for adequate air circulation.
Rack Mounting
▌This product is designed for 3U * 19inch-Half compact
Use bracket to attach product in the Rack.
▌Fasten between rack bracket and rack case by using fastener.
▌To install instruments in a sliding support shelf, order support shelf, slide kit
Note
300W, 600W is 3U *19inch-Half size, 900W, 1200W is 3U *19inch size.
1500W, 2000W is 4U *19inch size.
1-7. Installation
- 5 -

1 Power Switch 18 Slew
2 Ventilation slit 19 IO/Local
3
20Char *2Line LCD Display
20 Short On/Off
4 CC Mode Lamp 21 Recall , Save Key
5 CR Mode Lamp 22 ESC & Err Check, Protection Cancel
6 CV Mode Lamp 23 B-Memory, Factory
7 Dynamic Mode Lamp 24 A-Memory, Calibration
8 Cycling Mode상태 Lamp 25 Dynamic Cycling Time, Dynamic Duty
9 Remote Interface Lamp 26 Dynamic On/Off
10
Protection Lamp
27 Cycling Sequence
11 Error Lamp 28 Cycling Repeat
12 Setting Encoder 29 Cycling Step
13 Left cursor or Menu Change 30 Cycling On/ Off
14 Right cursor or Menu Change 31
15 Input Voltage/ Current On/Off 32
16
Mode Setting
33
17 Range Setting 34
2. Front Panel, Rear Panel Composition & Function
2-1. Front Panel Composition
- 6 -

1. POWER switch.
The load is turned on or off by this switch. It is adopted by following electric load's capacity.
2. Ventilation slit.
Air flow flows from front ventilation slit to rear ventilation slit compulsorily.
3. 20Char * 2Line Type LCD Display
Voltage/current and, all kinds menu/message displayed.
4. CC Mode Lamp
The load is in constant current mode.
5. CR Mode Lamp
The load is in constant resistance mode.
6. CV Mode Lamp
The load is in constant voltage mode.
7. Dynamic Mode Lamp
The load is in dynamic mode.
8. Cycling Mode Lamp
The load is in cycling mode.
9. Remote Interface Lamp
When received the remote control signal from PC and etc., it lights and automatically,
front panel keys are under "Key Lock" state.
10. Protection Lamp
Lamp is on in protection mode. You can see the protection mode text in LCD panel
You can not use any keys before ending the protection mode.
11. Error Lamp
When error occurs, lamp will be on. If errors are all checked, than lamp will be off.
12. Setting Encoder
Adjusts the voltage, current, resistance value.
- 7 -

13. Left cursor Key
Move cursor to the left direction.
14. Right cursor Key
Move cursor to the right direction.
15. Input voltage/current On/Off Key
Enables and disables the load input voltage/current.
16. Mode Setting Key
Adjust the Mode setting (CC mode, CR mode, CV mode).
17. Range Setting Key
Set the range of CC mode and CR mode.
When you're in input on status, you can not use this key.
18. Slew Setting Key
Adjust the setting value of Slew mode(1~12 step).
19. IO/LOCAL Setting & Error Display Key
Adjust the Remote interface setting (RS232C, RS485, USB)
Press 3 seconds and there will be Error Number and message.
20. Short On/Off Setting Key
Adjust the maximum current that load can take.
21. Recall & Save Key
Click more than 3 seconds and enter to Recall Mode and open the saved data.
Click one time and enter to Save Mode and save the current mode, setting value.
22. ESC, Err Check, Protection off Key
This key has same function of ESC Key. When error occurs, use this key for checking.
23. B-Memory Setting and Factory mode Key
If you're in Dynamic Mode, This key function as B-Memory Setting Key.
Press 3 seconds and set the B-Memory status.
For the factory mode, Power on the load with pressing this key. you can enter to Factory mode.
There are a lot of menus you can use (User-Mem Clear, Auto Key Lock and etc.)
- 8 -

24. A-Memory Setting, Calibration mode
If you're in Dynamic Mode, This key function as A-Memory Setting Key.
Press for 3 seconds and set the A-Memory Setting
For the Calibration, Power on the load with pressing this key. You can enter to calibration mode.
In this mode, you can do calibration of current, voltage.
25. Dynamic Cycling time Setting, Dynamic Duty Setting
Press one time and set the velocity of Dynamic mode (0.0001 ~ 4s).
Press for 3 seconds and set the dynamic mode duty (0.3~97%)
26. Dynamic On/Off
Start and Stop the dynamic mode.
27. Cycling Sequence setting
Set the start step and finish step of cycling mode.
28. Cycling Repeat setting
Set the repeat time of step in cycling mode.
29. Cycling Step setting
Press one time and input Step information for cycling mode.
You can input Step Num, Mode Set, Value Setting, Slope Time Setting, Delay Time Setting.
Press for 3 seconds and input Fuse Time and Fuse Current for Fuse Mode.
30. Cycling On/ Off Key
Press one time and proceed cycling mode.
Press for 3 seconds and fuse mode is on.
- 9 -

1 - Input bus bar 8 RS485 Interface Port
2 + Input bus bar 9 USB 2.0 Interface Port
3 External Option Input, Output 10 AC Input
4 V-Sensing Setting S/W 11 Ventilation Slit
5
Firmware Connector
6 Firmware download switch
7 RS232C Interface Port
1. - Input Bus bar
Electric load - voltage output bus bar
2. + Input Bus bar
Electric load + voltage output bus bar
3. External Option Input and output port
1) Current analog output (0~10V) 6) N.C
2) Voltage analog output (0~10V)
7)PROTECTION Output
3) Analog ground
8) Digital Ground
4) Digital ground 9)V_Sensing - Input
5) External Control 10)V_Sensing + Input
- 10 -
2-2. Rear Panel Composition
+
-
1
2
3
4
5
6
7
8
9
10
11

4.V-Sensing Setting S/W
Switch for V-Sensing or Normal mode.
5.Firmware Connector
Firmware download port. For downloading, please check if download switch is up.
6.Firmware download switch
Able and disable firmware download ( Up : available Down : not available )
7. RS232C Interface Port
This is a RS-232C Serial Port. You can use this type in 1:1 communication status.
8. RS485 Interface Port
In this communication type, you can connect many devices to 1 unit parallel.
※ Pin Description
1) +5V(Remote interface port) 3) D-(Data-)
2) D+(Data +) 4) 0 (Remote interface ground)
9. USB 2.0 Interface Port
This is a USB port for USB communication.
10. AC Input
Input AC Voltage. Originally, 220V/50-60Hz is a standard.
11. Ventilation Slit
Front and side panel will inhale the air and exhale to the rear side.
- 11 -

If there's no change for 5 seconds, local mode will be automatically started.
Set the menu and Save the menu setting by each menu key
Overview
1. IN ON/OFF
Explain about input on/off.
2. Constant Current Operation(CC)
Explain about the operating constant current output mode.
3. Constant Voltage Operation(CV)
Explain about the operating Constant voltage output mode.
4. Resistance Voltage Operation(CR)
Explain about the operating Constant Resistance Mode.
5. IO/LOCAL
Explain about remote interface setting/local mode changing, error message.
6. Range
설정값의 범위 설정에 관한 설명입니다.
Explain about range of setting value.
7. Save
Explain the method of storing the electric load stat in "User Memory" chip.
8. Recall
Explain method of recalling the power supply state from "User Memory" chip.
9. ESC
Explain about cancellation, error check and protection mode off.
10. Dynamic ON/OFF
Explain about dynamic mode process.
11. Slew
Explain about velocity setting of slew.
12. A-Memory
Explain about A-Memory
13. B-Memory
Explain about B-Memory
14. Dynamic Cycling Time / Duty
Dynamic Mode의 속도와 다이나믹 A,B의 Duty값에 관한 설명입니다.
Explain about velocity and A,B duty value of Dynamic mode.
- 12 -
3. Front-Panel Operating