Uživatelská příručka k elektronické zátěži OWON DC řady OEL1500/OEL3000

1. Úvod

The OWON OEL1500/OEL3000 series are high-performance programmable DC electronic loads designed for a wide range of testing applications. These units offer compact size, portability, and advanced features for precise control and measurement. They are suitable for R&D, production grading, lifespan testing, and post-sales health assessment in various fields including new energy, energy storage, and electric vehicles.

Klíčové vlastnosti:

• Compact size, portable and movable high-performance programmable electronic load.
• 2.8-inch TFT color LCD display for clear readings.
• Four primary operation modes: Constant Voltage (CV), Constant Current (CC), Constant Resistance (CR), and Constant Power (CP).
• Supports dynamic current testing up to 5kHz.
• High resolution readback: 1mV/0.1mA.
• Supports remote sensing compensation for improved accuracy.
• Multiple protection mechanisms including Over-Voltage Protection (OVP), Over-Current Protection (OCP), Over-Power Protection (OPP), and Over-Temperature Protection (OTP).
• Standard interfaces: RS232 and RS485 with SCPI protocol support for remote control.
• Optional test functions: Battery Discharge Test, OCP Test, OPP Test (Order No. OEL-T1).

2. Bezpečnostní informace

Před použitím zařízení si prosím přečtěte a pochopte všechny bezpečnostní pokyny. Nedodržení těchto pokynů může vést ke zranění nebo poškození zařízení.

• Ujistěte se, že je jednotka připojena k řádně uzemněné zásuvce.
• Neprovozujte zařízení ve vlhku nebo damp podmínky.
• Neblokujte ventilační otvory, aby nedošlo k přehřátí.
• Nepokoušejte se o opravu jednotky sami. Veškerý servis svěřte kvalifikovanému personálu.
• Ověřte správný objemtage and current settings before connecting any device under test (DUT).
• Před prováděním nebo změnou připojení vždy odpojte napájení.
• Buďte si vědomi vysokého objtage and current hazards.

3. Obsah balení

Po vybalení zkontrolujte, zda jsou v balení přítomny všechny položky:

• Main Unit (OWON DC Electronic Load)
• Napájecí kabel
• Pojistka
• Uživatelská příručka

4. Konec produktuview a Nastavení

4.1. Rozměry

The approximate dimensions of the main unit are 84mm (Width) x 151mm (Height) x 283mm (Depth), with a weight of approximately 2.5 kg.

4.2. Functional Area Annotation (Front and Rear Panels)

Přední panel:

• 2.8-inch TFT LCD: Color display for settings and readings.
• Menu, Mode, Param Buttons: Navigační a výběrová tlačítka.
• Tlačítka F1, F2, F3: Function buttons, context-sensitive.
• Tlačítko Shift: For accessing secondary functions.
• Otočný knoflík: For adjusting values and navigating menus.
• Tlačítko zapnutí/vypnutí: Řídící výstup.
• V-sense+ / V-sense- Terminals: Remote compensation port.
• CC/CR / CV/CP Buttons: Tlačítka pro výběr režimu.
• TRIG/TRAN/SHORT Button: Trigger, Transient, Short circuit functions.
• Tlačítko ESC: Escape/back.
• Tlačítko ENTER: Potvrďte výběr.
• PE Terminal: Zemnící terminál.
• Výstupní terminály: For connecting the Device Under Test (DUT).
• USB-Type C Port: Pro datovou komunikaci.

Zadní panel:

• Ventilátor: For cooling the unit.
• pojistka: Nadproudová ochrana.
• Vypínač: Hlavní ovládání napájení.
• DB9 Interface: Includes RS232, RS485, and Trig In/Out for external control and synchronization.
• AC vstup: Power input (100-240VAC, 50/60Hz).

4.3. Základní nastavení

1. Připojení napájení: Connect the provided power cord to the AC input on the rear panel and then to a suitable grounded power outlet.
2. Device Under Test (DUT) Connection: Connect the positive (+) and negative (-) terminals of your DUT to the corresponding output terminals on the front panel of the electronic load. Ensure proper polarity.
3. Remote Sensing Connection (Optional): For applications requiring high accuracy, especially with long connection cables, use the remote sensing terminals (V-sense+ and V-sense-) to compensate for voltage drops. Connect V-sense+ to the positive terminal of the DUT and V-sense- to the negative terminal of the DUT, as shown in Figure 4.3.

Remote sensing mode enables the unit to compensate for voltage drops in cables, significantly improving measurement accuracy.

4. Interface Connection (Optional): For remote control or data logging, connect the appropriate cable (RS232, RS485, or USB-Type C) to the corresponding port on the unit and your control system.
5. Zapnutí: Flip the power switch on the rear panel to the 'ON' position. The LCD display will light up.

5. Provozní režimy

The OWON DC Electronic Load offers various operating modes and functions to suit different testing requirements.

5.1. Static Modes (CV, CC, CR, CP)

These are the fundamental operating modes for the electronic load:

• Konstantní svtagRežim e (životopis): The electronic load maintains a constant voltage across its terminals, drawing current as needed to achieve the set voltage.
• Režim konstantního proudu (CC): The electronic load draws a constant current from the DUT, adjusting its internal resistance to maintain the set current.
• Constant Resistance (CR) Mode: The electronic load simulates a constant resistance, drawing current proportional to the voltage across its terminals (I = V/R).
• Constant Power (CP) Mode: The electronic load draws a constant power from the DUT, adjusting current and voltage to maintain the set power (P = V * I).

To select a static mode, press the corresponding CC/CR or CV/CP button on the front panel and use the rotary knob to set the desired parameters.

5.2. Dynamic Mode (up to 5kHz)

The dynamic mode allows the load to switch between two preset parameter values (Level A and Level B) at a specified frequency, enabling testing of the dynamic characteristics of a device by simulating high-speed current variations.

Access this mode via the 'MODE' button and configure T1 Value, T1 (time), T2 Value, and T2 (time) to define the dynamic load profile.

5.3. Adjustable Current Rise Rate

The transition time between different load set values can be configured by adjusting the current rise and fall rates (SR_RISE and SR_FALL). This feature is crucial for simulating realistic load changes and evaluating the response of power sources.

Navigate to the 'PARAM' menu to adjust SR_RISE and SR_FALL values, typically ranging from 0.001A/µs to 2A/µs.

5.4. Comprehensive Protection Features

The electronic load is equipped with multiple protection mechanisms to ensure safe operation for both the device and the DUT:

• Ochrana proti nadproudu (OCP): Zabraňuje poškození způsobenému nadměrným odběrem proudu.
• Over-Voltage Ochrana (OVP): Chrání před volným prouděnímtages exceeding the safe limit.
• Ochrana proti přetížení (OPP): Safeguards against power levels beyond the device's rating.
• Ochrana proti přehřátí (OTP): Vypne jednotku, pokud je vnitřní teplota příliš vysoká.
• Reverse Polarity Protection (RPP): Protects against incorrect polarity connections.
• LRV (Low Reverse Voltage) / RRV (Reverse Voltage ochrana): Additional safeguards related to reverse voltage podmínky.

5.5. Optional Test Functions

OCP/OPP Testing

These optional tests simulate over-current and over-power scenarios to evaluate the response effectiveness and stability of protection mechanisms in power supplies or battery modules.

The OCP testing simulates over-current scenarios to evaluate the response effectiveness and stability of over-current protection in power supplies or battery modules. The OPP testing verifies the over-power protection mechanism, ensuring precise safeguard triggering under high-power surges and maintaining system safety and operational stability.

Battery Capacity Testing

Equipped with constant current discharge control and intelligent termination criteria (Vstop, Cstop, Tstop), this function simulates battery behavior under diverse loads. The PC software monitors real-time discharge curves (voltage/current/capacity) to generate high-precision data for R&D, production grading, lifespan/consistency analysis, and post-sales health assessment. It delivers precise discharge analysis and efficient data acquisition to optimize battery validation in new energy, energy storage, and electric vehicles.

6. Specifikace

The instrument must be operated continuously for more than 30 minutes at the specified temperature to ensure the following parameters.

Specifikace se mohou změnit bez předchozího upozornění.

7. Údržba

• Čištění: Regularly clean the exterior of the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure ventilation openings are free from dust and debris.
• Skladování: When not in use, store the electronic load in a dry, dust-free environment away from direct sunlight and extreme temperatures.
• Výměna pojistky: If the unit fails to power on, check the fuse located on the rear panel. Replace it with a fuse of the same type and rating as specified in the manual or on the unit itself. Always disconnect the power cord before replacing the fuse.
• Kalibrace: For optimal accuracy, periodic calibration by qualified service personnel is recommended.

8. Řešení problémů

• Jednotka se nezapne: Check the power cord connection, the power switch on the rear panel, and the fuse. Ensure the power outlet is functional.
• No output/Incorrect readings: Verify all connections to the DUT, including remote sensing if used. Check the selected operating mode and parameter settings. Ensure the DUT is properly connected and functioning.
• Protection activated (e.g., OVP, OCP, OPP): The unit has detected a condition exceeding safe limits. Review your test setup and parameters. Reduce the voltage, current, or power settings, or check the DUT for faults.
• Communication issues with PC: Ensure the correct interface cable (USB, RS232, RS485) is used and properly connected. Verify driver installation and communication software settings on your PC.
• Přehřívání: Ensure the fan and ventilation openings on the rear and sides of the unit are not obstructed. Operate the unit within its specified ambient temperature range.

9. Uživatelské tipy

• Always start with lower voltage/current settings and gradually increase them to the desired levels to prevent accidental damage to the DUT or the electronic load.
• Utilize the remote sensing feature for precise voltage regulation at the DUT terminals, especially when dealing with high currents or long cables, to compensate for lead resistance.
• Familiarize yourself with the SCPI command set for automated testing and integration into larger test systems.
• Pravidelně kontrolujte aktualizace firmwaru od výrobce webwebu, aby byl zajištěn optimální výkon a přístup k novým funkcím.

10. Záruka a podpora

For warranty information, technical support, or service inquiries, please contact your authorized OWON distributor or the manufacturer directly. Keep your purchase receipt as proof of purchase for warranty claims.