1. Introduction
The Skydance DA2 is a 2-channel constant voltage LED dimmer designed for DALI (Digital Addressable Lighting Interface) systems. It supports both DT6 dimming and DT8-TC color temperature control modes, offering versatile lighting control for various LED strip applications. This manual provides essential information for the safe and efficient installation and operation of your DA2 dimmer.
2. Features
- 2-channel constant voltage LED Dimmer with a maximum output current of 10A per channel.
- Supports 2/1 DALI addresses, configurable via DIP switch for DT6 dimming or DT8-TC color temperature control.
- DALI-2 certified, compliant with DALI standard protocols IEC 62386-102, 207, 209.
- Automatic DALI address assignment by the DALI master controller.
- PWM digital dimming with a standard DALI logarithmic dimming curve.
- DIP switch configurable for four PWM frequencies: 500Hz, 2KHz, 8KHz, 16KHz.
- Compatible with external AC push switches for on/off control, brightness adjustment, and color temperature function.
- Built-in overload and short circuit protection with automatic recovery.
3. Technical Specifications
Figure 1: Technical Parameters and Mechanical Structure of the DA2 Dimmer.
| Parameter | Value |
|---|---|
| Input Voltage | 12-48VDC |
| Input Current | 20.5A (Max) |
| Output Voltage | 12-48VDC |
| Output Current | 2x10A@12/24V, 2x8A@36/48V |
| Output Power | 2x120W@12V, 2x240W@24V, 2x288W@36V, 2x384W@48V |
| Output Type | Constant Voltage |
| Parameter | Value |
|---|---|
| Input Signal | DALI + AC Push Dim |
| Dimming Range | 0-100% |
| Dimming Curve | Logarithmic |
| PWM Frequency | 500Hz/2KHz/8KHz/16KHz |
| Parameter | Value |
|---|---|
| Operation Temperature | Ta: -20°C ~ +55°C |
| Case Temperature (Max.) | Tc: +80°C |
| IP Rating | IP20 |
| EMC Standard | EN IEC 55015, EN IEC 61547 |
| Safety Standard | EN 61347-1/-2, EN 62493 |
| Certification | DALI-2, CE, RoHS |
| Warranty | 5 years |
| Protection | Overload, Short circuit, Reverse polarity |
4. Safety & Warnings
- DO NOT install with power applied to the device. Ensure all power is disconnected before installation or maintenance.
- DO NOT expose the device to moisture or operate in wet environments.
- Ensure proper ventilation to prevent overheating.
- Only qualified personnel should perform installation and wiring.
- Verify correct voltage and current ratings before connecting to LED strips and power supplies.
5. Installation
5.1 Mechanical Structure
The DA2 dimmer features an LED indicator, two groups of DALI signal input (DALI bus does not require polarity distinction), and an installation rack. Refer to Figure 1 for dimensions and component layout.
- Dimensions: 175mm (length) x 45mm (width) x 27mm (height).
- Installation Rack: Designed for easy mounting.
- DIP Switch: Used to set the light type (DT6/DT8) and PWM frequency.
5.2 Wiring Diagram
Ensure all connections are secure and correctly polarized. Use appropriate wire gauges for your installation.
Figure 2: Wiring Diagrams for various configurations.
5.2.1 DA2 for Single Color LED Strip (DIP switch 1 set to DT6)
Connect the DALI Master and DALI Bus Power Supply to the DALI input terminals (DA1, DA2). Connect an AC 100-240V power supply to the input. The 12-48VDC constant voltage power supply connects to the dimmer's input, and the single color LED strip connects to the LED output terminals (WW, CW).
Note: When two DT6 addresses are used to control color temperature, Channel 1 should be connected to the cool white LED strip, and Channel 2 to the warm white LED strip.
5.2.2 DA2 for Dual Color LED Strip (DIP switch 1 set to DT8)
Similar to single color setup, connect the DALI Master and DALI Bus Power Supply to the DALI input. Provide AC 100-240V and 12-48VDC constant voltage power. Connect the dual color LED strip to the LED output terminals.
5.2.3 DA2 Connection with AC Push Switch
For AC push switch control, connect the push switch to the designated AC Push Dim input. The AC 100-240V power supply and 12-48VDC constant voltage power supply are connected as usual. The dual color LED strip connects to the LED output.
6. Operating Instructions
Figure 3: DALI Control, Push DIM, and PWM Frequency Setting details.
6.1 DALI Control
The DA2 dimmer operates in two DALI modes, selected by DIP switch 1:
- DT6 2CH Mode: Uses 2 DALI addresses and provides 2 channel outputs.
- DT8 TC Mode: Uses 1 DALI address and provides 2 channel outputs for color temperature control.
DALI addresses are automatically assigned by the DALI Master controller. Refer to the user manual of your compatible DALI Master for specific operations.
6.2 Push DIM Function
When connected to an AC push switch, the following functions are available:
- Short Press: Turns the light on or off.
- Long Press (1-6 seconds): Initiates stepless dimming, with a dimming range of 1% to 100%. Each subsequent long press reverses the dimming direction.
- Double Click: Switches between three preset color temperature levels: warm white, neutral white, and cool white. While in this mode, a long press will adjust the color temperature. The color temperature adjustment state will automatically exit after 5 seconds of no operation.
6.3 PWM Frequency Setting
DIP switches 2 and 3 allow you to set the output PWM frequency. Higher PWM frequencies generally result in lower output current and higher power noise, but are more suitable for camera applications to prevent flickers.
| PWM Freq | 500Hz | 2KHz | 8KHz | 16KHz |
|---|---|---|---|---|
| Iout (12-24V) | 10A | 9A | 6A | 5A |
| Iout (36-48V) | 8A | 7A | 5A | 4A |
7. Maintenance
The DA2 dimmer is designed for low maintenance. Keep the device clean and free from dust. Do not attempt to open or repair the device yourself, as this will void the warranty and could lead to electric shock. For any issues, contact qualified service personnel.
8. Troubleshooting
If the device is not functioning as expected, please check the following:
- No Light Output: Verify all power connections (input and output) are secure and correct. Check the power supply and LED strip for functionality. Ensure the DALI master is sending commands.
- Incorrect Dimming/Color Temperature: Check DIP switch settings for DT6/DT8 mode and PWM frequency. Ensure the DALI master is configured correctly.
- Intermittent Operation: Check for loose wiring or environmental factors like excessive moisture or temperature.
- Overload/Short Circuit: The device has built-in protection and should recover automatically. If it doesn't, disconnect power, check for faults in the LED strip or wiring, and then reapply power.
9. Warranty & Support
The Skydance DA2 DALI 2CH Constant Voltage LED Dimmer comes with a 5-year warranty from the date of purchase, covering manufacturing defects. This warranty does not cover damage caused by improper installation, misuse, unauthorized modifications, or exposure to unsuitable environmental conditions.
For detailed product guides and documents, including a comprehensive user manual in PDF format, please refer to the official documentation available at: User Manual (PDF).
10. Manufacturing Process
Watch a short video showcasing the manufacturing process of Skydance products, highlighting the quality control and assembly procedures.
Video: Skydance manufacturing process.