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MEAN WELL XLG-240-H-AB

MEAN WELL XLG-240-H-AB

Specifications

Input Voltage: 100V - 305V AC, 142V - 431V DC
Output Voltage: 27 ~ 56V
Output Current: 4280~6660mA
Dimming: With Dimming 3 in 1
Output Power: 239.6 W
Efficiency: 91%
Operating Temperature: -40°C ~ 90°C
IP: 67
Length: 219 mm (8.622 in)
Width: 63 mm (2.48 in)
Height: 35.5 mm (1.398 in)
Weight: 1,046kg

Full Description

MeanWell XLG-240-H-AB LED Driver: Quality and Reliability

The industrial, waterproof MeanWell XLG-240-H-AB driver, with a nominal output power of 240W, is designed to provide a stable and safe power supply for modern LED lighting fixtures. Operating in Constant Current (CC) mode, this power supply guarantees optimal operating conditions for LED modules and high-power LED arrays, preventing premature failure.

Key Features and Benefits:

  • Versatile "3-in-1" Dimming: The "AB" modification allows for flexible adjustment of the output current and lighting brightness using a PWM signal, 0–10V regulated voltage, or a standard 100kΩ variable resistor (by connecting the first and middle terminals).

  • IP67 Protection Class: The sealed die-cast aluminum housing and full potting compound 100% guarantee the protection of the electronics against dust, direct splashes, and even water jets. This makes the driver an excellent choice for use in grow boxes, greenhouses, and hydroponic systems.

  • Comprehensive Safety System: The manufacturer has integrated multi-level automatic protection against output short circuits, overload, overvoltage, and dangerous overheating (overtemperature protection). Suitable for DIY projects.

Thanks to its high energy efficiency, with up to 91% efficiency, reliability, and strict adherence to international quality standards, the XLG-240-H-AB LED driver ensures the stable and uninterrupted operation of LED lighting equipment over many years of intensive use.

Additional Information

The "H" (High Voltage) version of the LED driver is a classic constant current (CC) source with an operating voltage range of 27–56 V. The maximum output current is limited by a power rating of 240W, meaning that a maximum current of 6.6A cannot be achieved at 54V. The maximum current at peak voltage is 4.28A. This LED driver is an excellent choice for custom grow light builds, especially when utilizing high-power arrays or profile LED modules, such as those featuring Osram OSCONIQ series chips. A critical calculation note: to achieve maximum efficiency (rated up to 91%), design the LED string so that the total forward voltage is closer to the upper limit of the range — 45–54 V is optimal.

Dimming nuances (AB index): The built-in "3-in-1" control scheme is stable and highly convenient:

  • PWM: It effectively handles frequencies from 100 Hz to 3 kHz. If you plan to control it with a microcontroller, ensure signal level shifting by using a transistor switch. An inverted PWM signal controlling a transistor that shorts the DIM+ and DIM- wires is a perfectly acceptable and simplest method for microcontroller-based dimming.

  • Manual adjustment: Use a standard 100 kΩ linear potentiometer. The power rating of the potentiometer is irrelevant due to the minimal current. Connect the DIM+ and DIM- wires to the first and center terminals of the potentiometer.

Limitations: The driver does not support smooth ignition from 0%; in practice, the driver begins to activate the LEDs at 8–12% of total power. Please take this into account when developing your microcontroller firmware. The minimum PWM value required for a stable driver start-up is 30–32 out of 255.

Frequently Asked Questions

Brightness control for LEDs or LED modules connected to a MEAN WELL driver is only possible in series and models specifically designed for this purpose. For example, in the XLG series, the LED driver part number must include the "AB" suffix, such as XLG-240-H-AB or XLG-25-AB. This indicates that the driver supports "3-in-1" output current dimming via a 0–10V regulated voltage source, PWM signal, or a standard 100kΩ variable resistor. In the HLG/ELG series, support for external dimming is indicated by the letter "B" at the end of the part number. Certain other MEAN WELL LED driver series also support dimming, though the control methods differ and are intended for more specialized residential or industrial applications.

Yes, provided that the MEAN WELL XLG-240-H-AB housing has an Ingress Protection rating of at least IP44. For humid environments (grow boxes, hydroponics), we recommend using only MEAN WELL models with an IP65 rating or higher. An IP65 protection level allows for the use of the LED driver in conditions of very high humidity and protects the device from direct splashes or even water jets, which is critical for hydroponic systems.

Parallel connection of LED modules to a high-power LED driver is always permissible, provided that one single rule is strictly observed: all parallel-connected LED modules (or diodes) must be of the exact same model and have the identical voltage drop. This guarantees a uniform current distribution among the LED modules or diodes. It is also worth noting that in a parallel LED configuration, the current cannot be distributed 100% evenly; there is always a 5–10% margin of error. Therefore, LEDs or LED modules should not be operated at their maximum rated current, and a current headroom of at least 10% must be maintained.

When using MEAN WELL drivers, there is no need to worry about any additional protection; it is sufficient to adhere to standard high-voltage grid connection practices, wire insulation regulations, and to utilize appropriate residential or industrial input circuit breakers. In MEAN WELL LED drivers and power supplies, the manufacturer integrates a comprehensive suite of protective features, including protection against overload, short circuits at the output, overtemperature, and overvoltage, along with various other safeguards depending on the specific series of the LED driver or power supply.

The most likely cause is the activation of the underload protection (low voltage cutoff). For example, if the minimum output voltage of the LED driver is 51V, and an LED matrix with a nominal voltage of 36V is connected to it (insufficient load), the driver will begin to ramp up the voltage upon startup until the current reaches its set limit, such as 1A. However, since a 1A current will flow through the circuit at 36V instead of the required 51V minimum, the LED driver will immediately trip its protection circuit and shut down the output. After a brief pause, it will attempt to restart the LED matrix, causing a 1A current to flow again at a voltage below the minimum allowable threshold. This cycle repeats, resulting in sharp LED flashes at a frequency of approximately 1Hz. If the connected load is 100% compliant with all specifications, the issue may be due to a faulty LED module, a poor connection, or a failure within the LED driver itself.

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LED Drivers
MEAN WELL XLG-240-H-AB
Price
1,652 ₴
In stock (3)

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Brand MEAN WELL
Article 4711287457376
MEAN WELL XLG-240-H-AB
1,652 ₴
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