The **RELI-DA01-R** is an industrial-grade DALI (Digital Addressable Lighting Interface) to 0-10V/1-10V signal converter. It is primarily used to integrate traditional dimmable LED drivers or ballasts into a modern DALI control network. --- ### ## Technical Specifications Overview | Parameter | Specification Details | | :--- | :--- | | **Input Signal** | DALI (Digital Addressable Lighting Interface) | | **Output Signal** | 0-10V / 1-10V DC (Sink or Source) | | **DALI Current Consumption** | ≤ 2mA | | **Relay Switching Capacity** | 5A @ 250VAC (Typical for load isolation) | | **Dimming Range** | 0% to 100% (Based on DALI commands) | | **Operating Temperature** | -20°C to +50°C | --- ### ## Key Electronic Components & Functionality #### 1. DALI Interface Circuit The device contains a bridge rectifier and optocouplers at the input stage. Since DALI is polarity-independent, the internal circuitry ensures the digital signal is correctly interpreted regardless of how the wires are connected. It functions as a **DALI Slave** with its own unique short address. #### 2. Signal Conversion (DAC) An internal Digital-to-Analog Converter (DAC) translates the 8-bit DALI dimming levels (0-254) into a precise linear voltage between 0V and 10V. This output controls the dimming pin of the connected LED driver. #### 3. Integrated Power Relay One of the most critical electronic parts in the RELI-DA01-R is the **internal relay**. - **Purpose:** 0-10V signals often cannot turn a light completely off (leaving a "glow"). - **Function:** The relay physically cuts the AC power line to the driver when the DALI bus sends a "0" or "OFF" command, ensuring zero power consumption. #### 4. Isolation Barrier The device provides galvanic isolation between the DALI bus and the 0-10V output. This protects the DALI controller from electrical surges or faults occurring on the high-voltage side of the lighting circuit. --- ### ## Wiring Configuration To implement this part, the following connections are typically required: ```mermaid graph LR A[DALI Bus] --> B[RELI-DA01-R] B --> C[0-10V Dimming Input] B --> D[AC Power Relay Output] D --> E[LED Driver AC Input] ``` 1. **DALI +/-**: Connects to the master DALI controller. 2. **Relay L/N**: Interrupts the power to the driver. 3. **0-10V +/-**: Connects to the dimming control wires of the driver.