Conversion of Conventional LED Lighting Panel to Variable Lighting Panel

Recently, I undertook a practical project using Hager and Mean Well equipment to convert a conventional LED lighting panel into a variable lighting solution. This conversion was driven by the need to adjust light intensity at night, as the client found the light excessively bright. In this article, I will describe all the steps of the project, detail the connections made, and configure the Hager domovea server, as well as provide technical specifications for the equipment used.

Equipment Used

1. KNX Power Supply Hager TXA111

The TXA111 power supply provides the necessary power to the KNX bus and associated KNX modules. It is a 640 mA capacity power supply, ideal for powering multiple KNX devices simultaneously.

2. 1-10V KNX Dimmer Module Hager TX211A

The TX211A module allows controlling the light intensity of devices that accept 1-10V dimming signals, such as compatible LED drivers. It translates KNX commands to adjustments in the output voltage, regulating the light intensity.

3. LED Driver Mean Well LCM-25

The Mean Well LCM-25 is an LED driver that accepts 1-10V control signals, allowing the adjustment of the brightness of connected luminaires. It supports a maximum power of 25W and allows selectable output configurations.

4. LED Panel Fillday 18W 3000K

The 18W LED panel, with a color temperature of 3000K, provides warm white light, ideal for relaxation environments. Originally, it came with a fixed driver, which was replaced by the LCM-25 to enable variable control.

Devices

Project Steps

1. Connecting the KNX Power Supply (TXA111)

The Hager TXA111 power supply was connected to the KNX bus, providing the necessary power for the control system's operation. Additionally, the 230V power supply was shared with the LCM-25 LED driver, allowing a more efficient circuit.

2. Connecting the KNX Dimmer Module (TX211A) to the LCM-25

The KNX dimmer module TX211A was connected to the 1-10V dimming control input of the LCM-25. This connection enables the KNX system to adjust the LED panel's light intensity according to the received commands.

3. Replacing the Original LED Panel Driver

The original LED panel driver was removed, and the panel was directly connected to the variable output of the LCM-25. This modification allowed direct control of the panel's light intensity.

Programming the group addresses defined in the Hager TX211A

Testing the Project Using the ETS5 Debugger

Testing the project using the ETS5 debugger and the dimmable light

Manual Testing of the Project

4. Configuring Scenarios on the Hager Domovea Server

Manual Testing of the Project

To meet the client's needs, a condition was configured on the Hager domovea server. During the period from 9 pm to 8 am, the LED panel brightness was set to 20%, reducing the intensity to a more comfortable level at night. Outside this period, the brightness was adjusted to 100%, ensuring full lighting during the day.

Technical Specifications of the Equipment

Hager TXA111

• Input Voltage: 230V AC
• Current Capacity: 640 mA for the KNX bus
• Dimensions: 4 DIN modules
• Operating Temperature: -5°C to +45°C

2. Hager TX211A

• Output Control: 1-10V DC
• Power Supply: KNX bus
• Dimensions: 2 DIN modules
• Additional Function: Regulation state feedback to the KNX system

3. Mean Well LCM-25

• Input Voltage: 180-295V AC
• Output: 350mA, 500mA, 600mA, 700mA, 900mA, or 1050mA (selectable)
• Control: 1-10V, PWM, or resistance
• Maximum Power: 25W
• Efficiency: Up to 86%

4. LED Panel Fillday 18W 3000K

• Power: 18W
• Color Temperature: 3000K (warm white)
• Luminous Flux: Approximately 1600 lumens
• Operating Voltage: 100-240V AC

Project Conclusion and Results Obtained

Upon project completion, the client achieved efficient control over the lighting, adjusting the intensity according to the time of day. The use of KNX equipment enabled seamless integration with the existing home automation system, and the configuration made on the Hager domovea server ensured that lighting conditions were automatically applied according to the schedule.

This project demonstrates how KNX technology can be used to enhance quality of life, providing comfort and energy efficiency in a variable LED lighting installation.