1. 서론
The OWON OEL15/30 Series DC Electronic Load is a high-performance programmable instrument designed for various testing applications. It offers compact size, portability, and a 2.8-inch TFT color LCD display for clear operation. This series supports four primary operation modes: Constant Voltage (CV), Constant Current (CC), Constant Resistance (CR), and Constant Power (CP). Advanced features include dynamic current testing up to 5kHz, high-resolution readback (1mV/0.1mA), remote sensing compensation, and multiple protection mechanisms to ensure safe and reliable operation.
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your OWON OEL15/30 Series DC Electronic Load. Please read it thoroughly before using the device.
2. 사용 가능한 모델
The OEL15/30 Series includes several models, each with specific voltage, current, and power ratings:
Figure 1: OWON OEL15/30 Series Models
The series is broadly categorized into OEL1500 Series (DC 150V, 15A/20A/30A, max 300W) and OEL3000 Series (DC 300V, 15A/20A/30A, max 300W).
3. 포장 목록
포장을 풀 때 모든 품목이 들어 있고 상태가 양호한지 확인하세요.
그림 2: 표준 포장 목록
- Main Unit (OEL15/30 Series DC Electronic Load)
- 전원 코드
- 퓨즈
- 사용자 설명서(본 문서 또는 인쇄본)
4. 설정
4.1 전면 및 후면 패널 덮개view
Familiarize yourself with the controls and connectors on the front and rear panels of the electronic load.
Figure 3: Functional Area Annotation
- 2.8인치 TFT LCD: Displays measurement values, settings, and operational status.
- Reuse function button: For quick access to frequently used functions.
- Control output button: To enable or disable the load output.
- USB-Type C 포트: Front USB communication port for data transfer and control.
- 출력 단자: Connect the Device Under Test (DUT) here.
- Remote compensation port (Vsense+, Vsense-): 볼륨을 보상하기 위한 원격 감지에 사용됨tage drops in cables, improving measurement accuracy.
- Earth terminal (PE): 안전 접지를 위해.
- DB9 interface (RS232/RS485/Trig In/Out): Rear communication port compatible with host computer and SCPI protocol.
- 전원 스위치: 장치의 주전원 제어.
- 퓨즈: Overcurrent protection for the unit's internal circuitry.
- 팬 : Internal intelligent fan for forced air cooling.
4.2 전원 연결
- 후면 패널의 전원 스위치가 OFF 위치에 있는지 확인하세요.
- Connect the provided power cord to the AC input on the rear panel and then to a suitable AC power outlet (AC 100-240V, 50/60Hz).
- For safety, ensure the unit is properly grounded via the Earth terminal.
4.3 테스트 대상 장치(DUT) 연결
- Connect the positive terminal of your DUT to the red (+) output terminal of the electronic load.
- Connect the negative terminal of your DUT to the black (-) output terminal of the electronic load.
- For applications requiring high measurement accuracy, especially with long connection cables, utilize the remote sensing terminals (Vsense+ and Vsense-). Connect Vsense+ to the positive terminal of the DUT and Vsense- to the negative terminal of the DUT. This compensates for voltage drops across the load cables.
그림 4: 원격 감지 모드 연결
5. 사용 설명서
5.1 기본 작업
- Turn on the power switch on the rear panel. The LCD display will illuminate.
- Use the front panel buttons (MENU, MODE, PARAM, F1, F2, F3, SHIFT, ESC, ENTER, On/Off) and the rotary knob to navigate menus and adjust settings.
- The "On/Off" button controls the load output. Ensure it is off before connecting/disconnecting the DUT.
5.2 Operation Modes (CC, CV, CR, CP)
The OEL15/30 Series supports four static operation modes:
- 정전류(CC) 모드: The electronic load draws a constant current regardless of the input voltage.
- 일정한 볼륨tage (CV) 모드: 전자 부하는 일정한 전압을 유지합니다.tage across its input terminals.
- 정저항(CR) 모드: The electronic load behaves like a constant resistance, drawing current proportional to the input voltage.
- 정전력(CP) 모드: The electronic load draws constant power, meaning current changes inversely with voltage.
Figure 5: Static Operation Modes
To select an operation mode, press the "MODE" button and use the rotary knob to choose between CC, CV, CR, or CP. Press "ENTER" to confirm.
5.3 Dynamic Mode (5kHz)
The 5kHz Dynamic Mode allows the load to switch between two preset parameter values (Level A and Level B) to test the dynamic characteristics of a device by simulating high-speed current variations.
Figure 6: 5kHz Dynamic Mode Interface
5.4 Adjustable Current Slew Rate
The transition time between load set values can be configured by adjusting the current slew rate, ranging from 0.001A/µs to 2A/µs. This allows for precise control over how quickly the current changes during dynamic tests.
Figure 7: Current Slew Rate Adjustment
5.5 Battery Capacity Testing (Optional)
This optional function, available with Order No. OEL-T1, is equipped with constant current discharge control and intelligent termination criteria (Vstop, Cstop, Tstop). It simulates battery behavior under diverse loads, enabling precise evaluation of capacity and State of Health. The PC software monitors real-time discharge curves (voltag방전율/전류/용량 등의 데이터를 정밀하게 분석하여 연구 개발, 생산 등급 분류, 수명/일관성 분석, 판매 후 상태 평가에 필요한 데이터를 생성합니다. 정밀한 방전 분석과 효율적인 데이터 수집을 통해 신에너지, 에너지 저장, 전기 자동차 분야에서 배터리 검증을 최적화합니다.
Figure 8: Battery Capacity Testing Interface
5.6 SCPI Programming
The OWON OEL15/30 Series supports SCPI (Standard Commands for Programmable Instruments) protocol for remote control via RS232, RS485, and USB interfaces. This allows for automated testing and integration into larger test systems.
A comprehensive programming manual (PDF) is available for download, detailing all SCPI commands and their syntax. Key command categories include:
- IEEE488.2 Common Commands: Standard commands like
*IDN?(query identification) and*RST(다시 놓기). - 시스템 명령: Control local/remote operation (
SYSTem:LOCal,SYSTem:REMote) and remote sensing status (SYSTem:SENSe[:STATe]). - Source Commands: Configure the load's function (
[SOURce:]FUNCtion), input status ([SOURce:]INPut), voltage parameters ([SOURce:]VOLTage), current parameters ([SOURce:]CURRent), resistance parameters ([SOURce:]RESistance), power parameters ([SOURce:]POWer), and dynamic mode settings ([SOURce:]DYNamic). - Measurement Commands: Query measured values such as voltag전자 (
MEASure[:SCALar]:VOLTage[:DC]?), current (MEASure[:SCALar]:CURRent[:DC]?), and power (MEASure[:SCALar]:POWer[:DC]?), as well as fault status (MEASure[:SCALar]:ALL[:DC]:INFO?). - Parallel Commands: For controlling units in parallel mode (
:PARallel[:STATe]?,:PARallel:Identity?,:PARallel:NUMber?).
For detailed syntax, parameters, and examples of each SCPI command, please refer to the dedicated Programming Manual (PDF) available at www.owon.com.hk/download.
6. 보호 기능
The OEL15/30 Series is equipped with multiple protection mechanisms to safeguard both the instrument and the Device Under Test (DUT):
- 오버볼tag전자 보호(OVP): 과도한 입력 볼륨으로 인한 손상을 방지합니다.tage.
- 과전류 보호(OCP): 과도한 입력 전류로부터 보호합니다.
- 과전력 보호(OPP): Safeguards against exceeding the maximum power rating.
- 과열 방지(OTP): 내부 온도가 너무 높아지면 장치가 자동으로 꺼집니다.
- 역극성 보호(RPP): Protects against incorrect connection of positive and negative terminals.
Figure 9: Comprehensive Protection Overview
Optional test functions for OCP and OPP are available (Order No. OEL-T1) to simulate and verify the response effectiveness and stability of these protection mechanisms.
Figure 10: OCP/OPP Test Function Interfaces
7. 사양
The following tables detail the specifications for the OWON OEL15/30 Series DC Electronic Load models. The instrument must be operated continuously for more than 30 minutes at the specified temperature to ensure the following parameters.
Figure 11: OEL15/30 Series Key Features and Basic Specifications
그림 12: 상세 사양표
사양은 사전 고지 없이 변경될 수 있습니다.
8. 유지관리
- 청소: Regularly clean the exterior of the instrument with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- 통풍: Ensure that the ventilation openings on the sides and rear of the instrument are not obstructed to allow for proper airflow and cooling.
- 퓨즈 교체: If the instrument does not power on, check the fuse on the rear panel. Replace it with a fuse of the same type and rating if necessary. Refer to the specifications for the correct fuse type.
- 저장: When not in use for extended periods, store the instrument in a dry, dust-free environment within the specified operating temperature and humidity ranges.
9. 문제 해결
이 섹션에서는 발생할 수 있는 일반적인 문제에 대한 해결 방법을 제공합니다. 더 복잡한 문제의 경우 기술 지원팀에 문의하십시오.
- 기기의 전원이 켜지지 않습니다.
- 전원 코드가 확실하게 연결되어 있는지 확인하세요.
- 전원 콘센트가 작동하는지 확인하세요.
- Inspect and replace the fuse on the rear panel if blown.
- No load current/voltage:
- Ensure the "On/Off" button on the front panel is activated (load output enabled).
- Check connections to the DUT.
- Verify the DUT is functioning correctly and providing power.
- Check for active protection (OVP, OCP, OPP) indicated on the display. Adjust settings or DUT conditions if a protection mode is triggered.
- 부정확한 판독값:
- Ensure remote sensing is correctly connected and enabled if long cables are used.
- Verify proper calibration (if applicable, refer to service manual or contact support).
- Check for stable operating environment conditions (temperature, humidity).
- Remote control issues (SCPI):
- Verify correct physical connection (USB, RS232, RS485).
- Ensure the instrument is in remote mode (
SYSTem:REMote명령). - Check communication settings (baud rate, parity, data bits, stop bits) on both the instrument and the host computer.
- Refer to the SCPI Programming Manual for command syntax and usage.
10. 사용자 팁
- Start with Low Settings: When testing a new device, always begin with lower voltage, current, or power settings and gradually increase them to avoid accidental damage.
- Utilize Remote Sensing: For precise measurements, especially with higher currents or longer cables, always connect and enable remote sensing to compensate for lead resistance.
- Monitor Protection Status: Pay attention to OVP, OCP, and OPP indicators on the display. If a protection is triggered, investigate the cause before resuming operation.
- Dynamic Mode for Real-World Simulation: Leverage the 5kHz dynamic mode to simulate real-world load changes for power supplies, batteries, and other components, providing a more thorough test.
- Automate with SCPI: For repetitive tasks or complex test sequences, use the SCPI commands via USB or RS232/RS485 to automate your testing process, saving time and improving consistency.
11. 보증 및 지원
OWON products are manufactured under strict quality control standards. For product support, including technical assistance and warranty information, please visit the official OWON web사이트를 방문하거나 제조업체에 직접 문의하세요.
- 공식적인 Web대지: www.owon.com.cn
- Product Support & Downloads: www.owon.com.hk/download
- 이메일: info@owon.com.cn
- 전화: +86-596-2130430
- 팩스: +86-596-2109272
- 제조업체: Fujian LILLIPUT Optoelectronics Technology Co., Ltd., No. 19, Heming Road, Lantian Industrial Zone, Zhangzhou 363005 P.R. China
The information in this manual was correct at the time of printing (Jul. 2025 edition V1.0.0). However, LILLIPUT continues to improve products and reserves the right to change specifications at any time without notice.
12. 제품 오버view 동영상
Video 1: OWON OEL1500/3000 Series DC Electronic Load Overview
This video provides a visual introduction to the OWON OEL15/30 Series DC Electronic Load, highlighting its key features and functionalities, including remote sensing, communication ports, dynamic mode, adjustable slew rate, battery discharge testing, and protection features.
