Mean Well LRS-350-24 DC Switching Power Supply User Manual

1. Pengenalan

This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Mean Well LRS-350-24 DC Switching Power Supply. This 350W single-output enclosed type power supply features a 30mm low profile design, accepting input of 115VAC or 230VAC (selectable by switch). It is designed for various industrial applications, including automation machinery, industrial control systems, mechanical and electrical equipment, and electronic instruments.

2. Maklumat Keselamatan

AMARAN: Risiko renjatan elektrik. Pemasangan dan servis hanya boleh dilakukan oleh kakitangan yang berkelayakan.

• Before connecting the power supply, ensure the input voltage selection switch is set correctly to either 115VAC or 230VAC to match your local power grid. Incorrect setting can cause damage to the unit. The switch is set to 115VAC by default.
• Always disconnect the AC input power before making any connections or adjustments to prevent electric shock.
• Pastikan pembumian unit yang betul untuk mengelakkan bahaya elektrik.
• Do not operate the power supply in environments with excessive moisture, dust, or extreme temperatures outside its specified operating range.
• Ensure adequate ventilation around the unit to prevent overheating. The built-in fan operates based on internal temperature.
• Jangan buka bekalan kuasa casing. Tiada bahagian yang boleh diservis pengguna di dalamnya.

3. Ciri-ciri

• AC input range selectable by switch (90 ~ 132VAC / 180 ~ 264VAC).
• Withstands 300VAC surge input for 5 seconds.
• Comprehensive protections: Short Circuit, Overload, Over Voltage, Lebih Suhu.
• Forced air cooling by built-in DC fan.
• Built-in cooling fan ON-OFF control, activating when case temperature exceeds 122℉ (50℃).
• Pro rendah 1Ufile reka bentuk.
• Withstands 5G vibration test.
• LED indicator for power on.
• No load power consumption less than 0.75W.
• 100% beban penuh ujian terbakar dalam.
• High operating temperature up to 70℃.
• Operating altitude up to 5000 meters.
• High efficiency, long life, and high reliability.

4. Aplikasi

• Jentera automasi industri
• Sistem kawalan industri
• Peralatan mekanikal dan elektrik
• Electronic instruments and apparatus

5. Produk Lebihview

6. Persediaan dan Pemasangan

6.1 Input Voltage Pemilihan

The LRS-350-24 features an input voltage selection switch. Before connecting the AC power, ensure this switch is set to the correct voltage for your region (115VAC or 230VAC). The switch is typically located on the side of the unit, as shown in Figure 2. The factory default setting is 115VAC.

6.2 Arahan Pendawaian

Refer to Figure 2 for the terminal block layout. Connect the AC input and DC output wires as follows:

• Input AC: Connect the Live (L), Neutral (N), and Ground (⏚) wires to the corresponding terminals.
• Output DC: Connect the positive (+) and negative (-) load wires to the respective output terminals. The LRS-350-24 provides multiple terminals for both positive and negative outputs to facilitate easier wiring for higher current applications.

Ensure all connections are secure and properly insulated. Use appropriate wire gauges for the expected current load.

6.3 Pemasangan

The power supply is designed for benchtop use or integration into systems. Mounting brackets are not included with the unit. Refer to the Mechanical Specification section for detailed dimensions and mounting hole locations if custom mounting is required.

7. Arahan Operasi

7.1 Hidupkan

Once all connections are secure and the input voltage is correctly selected, apply AC power. The power-on LED indicator will illuminate, signifying normal operation.

7.2 Keluaran Voltage Pelarasan

The LRS-350-24 features a trim-pot (potentiometer) for fine-tuning the output voltage. This adjustment allows for a slight variation around the nominal 24V output. Use a small screwdriver to carefully turn the trim-pot clockwise to increase voltage or counter-clockwise to decrease it. Monitor the output voltage dengan multimeter semasa pelarasan.

7.3 Operasi Kipas

The built-in DC fan is thermostatically controlled. It will activate automatically when the internal case temperature exceeds 122℉ (50℃) to maintain optimal operating temperatures and ensure longevity of the unit. The fan may not run continuously, depending on the load and ambient temperature.

8. Penyelenggaraan

The Mean Well LRS-350-24 power supply requires minimal maintenance. Follow these guidelines to ensure optimal performance and lifespan:

• Keep the unit clean and free from dust and debris, especially around the ventilation openings and fan grille. Use a soft, dry cloth for cleaning.
• Ensure that there is always adequate airflow around the power supply. Do not block the fan or ventilation holes.
• Periksa semua sambungan pendawaian secara berkala untuk memastikan ia kekal selamat.
• Avoid operating the unit in environments that exceed its specified temperature and humidity ranges.

9. Penyelesaian masalah

If the power supply is not functioning as expected, consider the following:

• Tiada Output Kuasa:
  • Check the AC input power source.
  • Sahkan input voltage selection switch is set correctly (115VAC or 230VAC).
  • Ensure all input and output wires are securely connected.
  • Check if the power-on LED indicator is illuminated.
• Intermittent Output or Shutdown:
  • The unit may be triggering its overload or over-temperature protection. Reduce the load or ensure proper ventilation.
  • Check for short circuits in the output wiring or connected load.
• Kipas Tidak Berjalan:
  • The fan is thermostatically controlled and only activates when the internal temperature exceeds 122℉ (50℃). If the unit is cool and under light load, the fan may not be active, which is normal.
  • If the unit is hot and the fan is not running, ensure the fan grille is not obstructed.

If issues persist after checking these points, contact technical support.

10. Spesifikasi

11. Technical Diagrams

11.1 Gambarajah Blok

11.2 Derating Curve

11.3 Static Characteristics

11.4 Spesifikasi Mekanikal

12. Waranti dan Sokongan

The Mean Well LRS-350-24 DC Switching Power Supply is manufactured to high-quality standards and typically comes with a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Mean Well webtapak untuk terma dan syarat waranti tertentu.

For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact your authorized Mean Well distributor or the manufacturer directly. Ensure you have your product model number (LRS-350-24) and purchase information available when seeking support.