MEAN WELL LRS-50-24 Power Supply User Manual

1. Introduktion

The MEAN WELL LRS-50-24 is a 50W single-output enclosed type power supply designed with a low profile of 30mm. It accepts a full range AC input from 85V to 264V. This model specifically provides a 24V DC output.

Nøglefunktioner omfatter:

• Universal AC input / Full range (85~264VAC)
• Withstands 300VAC surge input for 5 seconds
• No load power consumption less than 0.2W
• Miniature størrelse og 1U lav profile design
• Høj driftstemperatur op til 70°C
• Beskyttelser: Kortslutning, Overbelastning, Over voltage
• Køling ved fri luftkonvektion
• Compliance with IEC/EN 60335-1(PD3) and IEC/EN61558-1, -2-16 for household appliances
• Driftshøjde op til 5000 meter
• Withstands 5G vibration test
• Høj effektivitet, lang levetid og høj pålidelighed
• LED-indikator for tænding
• 100 % fuld belastning indbrændingstest

Figur 1: Overview of MEAN WELL LRS-50-24 features and applications.

2. Sikkerhedsoplysninger

Please read this section carefully before installation and operation to ensure safe use and prevent damage to the unit or connected equipment.

• Elektrisk sikkerhed: Installation should be performed by qualified personnel. Ensure all wiring complies with local and national electrical codes.
• Input bindtage: Kontroller, at AC-indgangen voltage is within the specified range of 85-264VAC before connecting the power supply.
• Jording: Always connect the Frame Ground (FG) terminal to a proper earth ground to prevent electric shock.
• Ventilation: Ensure adequate free air convection around the unit. Do not obstruct ventilation holes. Maintain sufficient clearance from other components to prevent overheating.
• Overbelastningsbeskyttelse: Do not exceed the rated output power of 50W. Overloading can cause the unit to shut down or be damaged.
• Miljøforhold: Operate the power supply within the specified temperature and humidity ranges. Avoid exposure to moisture, dust, and corrosive substances.

3. Produktet er slutview

The LRS-50-24 power supply features a compact, enclosed metal case with a perforated design for heat dissipation. It includes a terminal block for secure wiring connections and an LED indicator for operational status.

Figur 2: Generelt view of the MEAN WELL LRS-50-24 power supply.

4. Installation og ledningsføring

Follow these steps for proper installation and wiring of the LRS-50-24 power supply:

1. Montering: Mount the power supply in a location that allows for adequate free air circulation. Ensure the unit is securely fastened.
2. Indgangsledning: Connect the AC input wires to the terminal block. The terminals are typically labeled 'L' (Line), 'N' (Neutral), and 'FG' (Frame Ground). Ensure correct polarity and a secure ground connection.
3. Udgangsledning: Connect the DC output wires to the terminal block. The terminals are typically labeled '+V' (Positive Output) and '-V' (Negative Output). Ensure correct polarity for your connected device.
4. Voltage Justering: If necessary, the output voltage can be finely adjusted using the '+V ADJ' potentiometer located near the output terminals. Use a small screwdriver for this adjustment.
5. Endelig kontrol: Før du tilslutter strømmen, skal du dobbelttjekke alle forbindelser for tæthed og korrekt polaritet.

Figur 3: Nærbillede view of the terminal block and labels for wiring connections.

5. Betjening

Once properly installed and wired, apply AC power to the unit. The built-in LED indicator will illuminate, signifying that the power supply is operational and providing output voltage. The unit is designed for continuous operation within its specified parameters.

6. Protections and Troubleshooting

The LRS-50-24 power supply incorporates several protection mechanisms:

• Kortslutningsbeskyttelse: The unit will protect against short circuits at the output.
• Overbelastningsbeskyttelse: If the output current exceeds the rated limit, the unit will enter protection mode.
• Over Voltage Beskyttelse: Protects connected devices from excessive output voltage.

In case of an issue, consider the following troubleshooting steps:

• No Output / LED Off: Kontroller AC-indgangsvolumentage and ensure all input connections are secure. Verify the input fuse (if external) is intact.
• Intermittent Output: This may indicate an overload condition. Reduce the load connected to the power supply.
• Forkert udgangsvolumentage: Check the '+V ADJ' potentiometer setting. If still incorrect, verify the load is within specifications.
• Overophedning: Ensure proper ventilation and ambient temperature are within the specified range. Remove any obstructions to airflow.

If problems persist after performing these checks, discontinue use and contact technical support.

7. Tekniske specifikationer

Detailed specifications for the MEAN WELL LRS-50-24 power supply:

Figure 4: Detailed specifications table for the LRS-50 series, including LRS-50-24.

8. Performance Characteristics and Block Diagram

Understanding the performance characteristics and internal block diagram can aid in system design and troubleshooting.

8.1. Blokdiagram

The block diagram illustrates the internal architecture of the power supply, showing the main functional stages from AC input to DC output.

8.2. Derating Curve

The derating curve indicates the maximum permissible output load as a function of ambient temperature. Operating within the specified curve ensures optimal performance and longevity.

8.3. Static Characteristics

The static characteristics graph shows the relationship between input voltage and output load, demonstrating the power supply's stability across its operating range.

Figure 5: Block diagram, derating curve, and static characteristics for the LRS-50 series.

9. Garanti og support

The MEAN WELL LRS-50-24 power supply comes with a 3 års garanti fra købsdatoen, dækker defekter i materialer og udførelse ved normal brug.

For technical support, warranty claims, or further assistance, please contact your authorized MEAN WELL distributor or the manufacturer directly. Provide your product model number (LRS-50-24) and purchase details when seeking support.