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

1. Introduktion

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. Sikkerhedsoplysninger

WARNING: Risk of electric shock. Installation and servicing should only be performed by qualified personnel.

• 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.
• Ensure proper grounding of the unit to prevent electrical hazards.
• 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.
• Åbn ikke strømforsyningen casing. Der er ingen dele indeni, som kan serviceres af brugeren.

3. Funktioner

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

4. Ansøgninger

• Industrielle automationsmaskiner
• Industrielt kontrolsystem
• Mekanisk og elektrisk udstyr
• Electronic instruments and apparatus

5. Produktet er slutview

6. Opsætning og installation

6.1 Indgang Voltage Valg

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 Ledningsinstruktioner

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

• AC-indgang: Connect the Live (L), Neutral (N), and Ground (⏚) wires to the corresponding terminals.
• DC-udgang: 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 Montering

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. Betjeningsvejledning

7.1 Tænd

Når alle forbindelser er sikre, og inputvolumentage is correctly selected, apply AC power. The power-on LED indicator will illuminate, signifying normal operation.

7.2 Udgang Voltage Justering

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 eller mod uret for at mindske den. Overvåg udgangsvolumentage med et multimeter under justering.

7.3 Ventilatordrift

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. Vedligeholdelse

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.
• Kontrollér regelmæssigt alle ledningsforbindelser for at sikre, at de forbliver fastgjorte.
• Avoid operating the unit in environments that exceed its specified temperature and humidity ranges.

9. Fejlfinding

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

• Ingen strømudgang:
  • Check the AC input power source.
  • Bekræft 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.
• Intermitterende udgang eller nedlukning:
  • 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.
• Ventilator kører ikke:
  • 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. Specifikationer

11. Technical Diagrams

11.1 Blokdiagram

11.2 Derating Curve

11.3 Static Characteristics

11.4 Mekanisk specifikation

12. Garanti og support

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 webwebstedet for specifikke garantivilkår.

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.