1. Giriş
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the MEAN WELL DR-120-12 AC-DC DIN Rail Power Supply. Please read this manual thoroughly before using the product and retain it for future reference.
2. Güvenlik Talimatları
UYARI: Elektrik çarpması riski vardır. Kurulum ve bakım işlemleri yalnızca yetkili personel tarafından yapılmalıdır.
- Ensure the power supply is disconnected from the main voltage before any installation or maintenance work.
- Protect against accidental contact with live parts.
- Ensure proper grounding (earth connection) is established.
- Do not operate the unit in environments with high humidity or extreme temperatures outside the specified range.
- C'yi açmayınasing; İçerisinde kullanıcının müdahale edebileceği herhangi bir parça bulunmamaktadır.
- Tüm yerel ve ulusal elektrik yönetmeliklerine ve kurallarına uyun.
3. Ürün Bittiview
The MEAN WELL DR-120-12 is a 120W single output industrial DIN rail power supply, providing a stable 12V DC output at up to 10A. It features universal AC input and is designed for installation on standard DIN rails, making it suitable for various industrial control applications.

Şekil 3.1: Ön view of the MEAN WELL DR-120-12 AC-DC DIN Rail Power Supply, showing input/output terminals and specifications label.

Figure 3.2: Close-up of the top terminals (+V, -V, DC OK) and ventilation grille on the MEAN WELL DR-120-12, indicating output connections and cooling features.
4. Özellikler
| Parametre | Değer |
|---|---|
| Örnek | DR-120-12 |
| Çıkış Hacmitage | 12V doğru akım |
| Çıkış Akımı | 10A |
| Çıkış Gücü | 120W |
| Giriş Voltage Aralık | 88-132VAC / 176-264VAC (selectable by switch) |
| Frekans Aralığı | 47-63Hz |
| Yeterlik | Genellikle% 85 |
| Montaj Tipi | DIN Rail (TS-35/7.5 or TS-35/15) |
| Çalışma Sıcaklığı | -20°C to +70°C (refer to derating curve) |
| Boyutlar (U x G x Y) | 125 x 100 x 70 mm (approximate, refer to dimension drawing) |
| Sertifikalar | CE, UL Listed |

Figure 4.1: Technical drawing illustrating the dimensions of the DR-120-12 power supply in millimeters.
5. Kurulum ve Kurulum
5.1 DIN Ray Montajı
The DR-120-12 is designed for easy installation on standard TS-35/7.5 or TS-35/15 DIN rails. Ensure the unit is mounted vertically to allow for proper heat dissipation through convection cooling.
- Hook the top edge of the power supply onto the DIN rail.
- Alt kenarı yerine oturana kadar sıkıca bastırın.
- Verify that the unit is securely fastened to the DIN rail.

Şekil 5.1: Ör.ample of the DR-120-12 power supply securely mounted on a DIN rail, demonstrating the proper installation method.
5.2 Kablo Bağlantıları
Before making any connections, ensure the AC input voltage selector switch (115VAC/230VAC) on the front panel is set correctly according to your local mains voltage. Yanlış ayar, cihaza zarar verebilir.
- Input Terminals (Bottom): Connect the AC mains supply to the L (Line), N (Neutral), and ⌂ (Ground) terminals. Use appropriate wire gauges for the current rating.
- Output Terminals (Top): Connect your load to the +V and -V terminals. Observe polarity. The "DC OK" LED will illuminate when the output voltage is within tolerance.
- Cilttage Ayarlama: A potentiometer (ADJ) is located on the front panel for fine-tuning the output voltagküçük bir aralık içinde.

Şekil 5.2: Üzeriview of the DR-120 series, highlighting the input (bottom) and output (top) terminal blocks for wiring connections.
6. Operasyon
Once properly installed and wired, apply AC power to the input terminals. The "DC OK" LED indicator on the front panel will light up, indicating that the output voltage is present and within its specified range. The unit is now operational and supplying power to the connected load.
- Aşırı Yük Koruması: Cihazda aşırı yük koruması mevcuttur. Aşırı yüklenme durumunda, çıkış voltajı kesilir.tagSistem düşebilir veya kapanabilir. Normal çalışmayı sağlamak için yükü azaltın.
- aşırı sestage Koruma: Çıkış hacmitage exceeds a preset limit, the unit will shut down to protect the connected equipment. Power cycling may be required to reset.
7. Bakım
The DR-120-12 power supply is designed for reliable operation and requires minimal maintenance. Regular inspection is recommended to ensure optimal performance and safety.
- Temizlik: Keep the ventilation openings clear of dust and debris to ensure proper airflow. Use a soft, dry brush or compressed air for cleaning. Do not use liquid cleaners.
- Denetleme: Periodically check all wiring connections for tightness and signs of wear or damage. Ensure the unit is securely mounted.
- Çevresel Koşullar: Çalışma ortamının belirtilen sıcaklık ve nem aralıklarında kalmasını sağlayın.
8. Sorun Giderme
| Sorun | Olası Neden | Çözüm |
|---|---|---|
| çıkış hacmi yoktage / "DC OK" LED off | AC giriş gücü yok. Yanlış giriş hacmitage switch setting Çıkışta aşırı yüklenme veya kısa devre İç arıza | Check AC mains supply and connections. Verify 115VAC/230VAC switch setting. Disconnect load, check for short circuits, reduce load. Sorun devam ederse destek ekibiyle iletişime geçin. |
| Çıkış hacmitage çok düşük | Aşırı yük durumu Cilttage adjustment (ADJ) set too low | Yükü azaltın. Adjust ADJ potentiometer clockwise to increase voltage. |
| Unit is hot to touch | Yetersiz havalandırma Aşırı yük durumu Yüksek ortam sıcaklığı | Ensure proper clearance around the unit and clear ventilation openings. Yükü azaltın. Ensure ambient temperature is within specifications. |
If troubleshooting steps do not resolve the issue, contact qualified service personnel or the manufacturer for assistance.
9. Garanti ve Destek
MEAN WELL products are typically covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official MEAN WELL website. For technical support or service inquiries, please contact your distributor or the manufacturer directly, providing the model number (DR-120-12) and serial number of your unit.
10. İmha Bilgileri
This product contains electronic components and should not be disposed of with general household waste. Please dispose of this product in accordance with local regulations for electronic waste recycling. Proper disposal helps prevent potential negative consequences for the environment and human health.