1. Увод
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Mean Well EDR-120-24 AC/DC DIN Rail Power Supply. The EDR-120 series is an economical, slim 120W power supply designed for industrial applications. It is suitable for installation on TS-35/7.5 or TS-35/15 mounting rails, featuring a compact 40mm width for space-saving within cabinets. This unit operates effectively in ambient temperatures between -20℃ and 60℃ under air convection.
Please Note: The EDR series is primarily for industrial applications. For household applications, please choose the NDR series.
2. Безбедносне информације
Пажљиво прочитајте сва упутства пре инсталације и рада. Непоштовање ових упутстава може довести до струјног удара, пожара или озбиљних повреда.
- Квалификовано особље: Инсталацију и одржавање треба да обавља само квалификовано особље.
- Искључивање струје: Always disconnect the main power supply before any installation, wiring, or maintenance work.
- Правилно уземљење: Обезбедите правилно уземљење да бисте спречили струјни удар.
- вентилација: Maintain adequate ventilation around the unit. Do not obstruct ventilation openings.
- Услови животне средине: Operate the power supply within the specified temperature and humidity ranges. Avoid exposure to moisture or corrosive environments.
- Спецификације жице: Use copper wire only, rated for a minimum of 75℃.
- Индустријска употреба: This product is designed for industrial control equipment.
3. Производ је готовview и карактеристике
The EDR-120-24 is a robust AC/DC power supply offering reliable performance for various industrial needs. Key features include:
- Излаз: 24В, 5А, 120В.
- Улазни волtage: 90 ~ 264VAC / 124 ~ 370VDC.
- Заштите: Short circuit, Overload, Over Voltagе, Превисока температура.
- Ефикасност: High efficiency of 87.5% (typical).
- Сертификати: UL and CE certified, UL 508 (Industrial Control Equipment) approved.
- Компактан дизајн: Slim 40mm width for space-saving DIN rail mounting.
- Хлађење: Хлађење ваздушном конвекцијом.

Слика 1: Предња страна view of the Mean Well EDR-120-24 power supply, showing input/output terminals, voltage adjustment, and DC OK indicator.
4. Механичке спецификације
The EDR-120-24 features a compact design suitable for DIN rail mounting. Detailed dimensions are provided below.

Figure 2: Mechanical drawing of the EDR-120-24, showing top, side, front, and bottom views with dimensions in millimeters (tolerance ±1mm).
Додела пинова терминала
| Пин Но. | Задатак |
|---|---|
| 1 | ФГ (Фраме Гроунд) |
| 2 | AC/N or DC - |
| 3 | АЦ / Л или ДЦ + |
| Пин Но. | Задатак |
|---|---|
| 1,2 | ДЦ ИЗЛАЗ -В |
| 3,4 | ДЦ ОУТПУТ +В |
5. Инсталација (Подешавање)
Follow these steps for proper installation of the EDR-120-24 power supply.
5.1 Монтажа
- The EDR-120-24 is designed for DIN rail mounting on TS-35/7.5 or TS-35/15 rails.
- Ensure sufficient clearance for air circulation. A minimum of 5mm left and right, 40mm above, and 20mm below the power supply is recommended for optimal cooling.
- To mount, hook the top edge of the power supply onto the DIN rail, then push the bottom edge firmly until it clicks into place.

Слика 3: Страна view илуструјући механизам за монтажу на DIN шину.
5.2 Ожичење
All connections are made via screw terminal blocks. Refer to the Terminal Pin Assignment tables in Section 4.
- Input Wiring (TB1): Connect the AC mains (L, N) or DC input (+, -) to the corresponding terminals. Ensure the Frame Ground (FG) terminal is properly connected to earth ground. The input voltagОпсег је 90-264ВАЦ или 127-370ВДЦ.
- Output Wiring (TB2): Connect your load to the DC OUTPUT +V and -V terminals.
- Врста жице: Use copper wire only, rated for a minimum of 75℃.
- Обртни момент: Ensure terminal screws are tightened to the specified torque (Input: 6.5 Lb-in, Output: 5.5 Lb-in) to prevent loose connections.

Слика 4: Прample wiring diagrams for different input configurations. Always refer to the product label for specific terminal markings.
6. Операција
Once installed and wired correctly, the EDR-120-24 is ready for operation.
- Укључено: Apply the specified AC or DC input voltage.
- DC OK Indicator: A green LED labeled "DC OK" will illuminate when the output voltagе је у прихватљивом опсегу.
- Оутпут Волtagе Подешавање: Излазни волtage can be finely adjusted using the "+V ADJ" potentiometer located on the front panel. Use a small screwdriver to turn the potentiometer clockwise to increase voltage or counter-clockwise to decrease it.
7. Одржавање
The EDR-120-24 is designed for long-term reliability with minimal maintenance. However, periodic checks are recommended.
- Чишћење: Keep the unit clean and free from dust and debris, especially around ventilation openings, to ensure proper air convection cooling. Use a soft, dry cloth for cleaning.
- Провере везе: Periodically inspect all wiring connections for tightness and signs of corrosion. Re-tighten screws if necessary after disconnecting power.
- Мониторинг животне средине: Ensure the operating environment remains within the specified temperature and humidity limits.
КСНУМКС. Решавање проблема
Ако напајање не функционише како се очекује, размотрите следеће уобичајене проблеме:
- No Output / DC OK LED Off:
- Check input power connections and voltage.
- Verify that the input fuse (if external) is intact.
- Check for short circuits or overloads on the output. Disconnect the load and re-test.
- Ensure the ambient temperature is within the operating range.
- Рад са прекидима:
- Проверите да ли постоје лабаве везе ожичења.
- Verify that the load current does not exceed the rated output current (5A). Overload protection may be activating.
- Ensure adequate ventilation to prevent over-temperature shutdown.
- Нетачна излазна јачина звукаtage:
- Adjust the "+V ADJ" potentiometer.
- Проверите унос волtagе је стабилно и унутар наведеног опсега.
If problems persist after checking these points, contact qualified service personnel or the manufacturer.
9. Техничке спецификације
| Параметар | Валуе |
|---|---|
| Назив модела | ЕДР-120-24 |
| Оутпут Волtage | 24В |
| Називна струја | 5A |
| Излазна снага | 120В |
| Улазни волtagе Распон | 90 ~ 264VAC / 127 ~ 370VDC |
| Инпут Фрекуенци | 47 до 63 Хз |
| Ефикасност (тип.) | 87.5% |
| Таласање и шум (макс.) | 120мВп-п |
| Лине Регулатион | 0.5% |
| Регулација оптерећења | 1% |
| Minimum Isolation Voltage | 3000ВАЦ |
| Заштите | Short circuit, Overload, Over Voltagе, Превисока температура |
| Радна температура | -20℃ до 60℃ |
| Метод хлађења | Конвекција ваздуха |
| Димензије (Д к Ш к В) | 113.5 к 40 к 125.2 мм (4.47 к 1.57 к 4.93 инча) |
| Монтажа | ДИН шина |
| Тежина | 600г |
| Цертификати | UL, CE, EU RoHS Compliant |
10. Гаранција и подршка
This Mean Well power supply is manufactured to high-quality standards. For warranty information, please refer to the documentation provided with your purchase or contact your distributor. For technical support or service inquiries, please reach out to the seller or the official Mean Well support channels.
Manufacturer: MEAN WELL ENTERPRISES CO., LTD.
Distributed by: KAINSC PRODUCTS KAWAGUCH INDUSTRIAL SCIENTIFIC