The **SICK MLG-2 Pro (MLG-2B-R)** is a high-resolution automation light grid designed for complex applications like object detection, height measurement, and volume classification. The "R" in the suffix typically denotes a **Receiver** unit. Below is a breakdown of the electronic components and technical specifications. --- ## 1. Core Electronic Components The system operates using an optical synchronization method between a Sender (MLG-2B-S) and a Receiver (MLG-2B-R). | Component | Description | | :--- | :--- | | **Optical Sensors** | Infrared (IR) photodiodes that detect pulsed light from the sender. | | **Microprocessor** | High-speed DSP (Digital Signal Processor) used for evaluating beam interruptions in real-time. | | **Synchronization Logic** | Electronic "Optical Sync" allows the units to sync without a dedicated cable between sender and receiver. | | **Status LEDs** | 3-color LEDs (Red/Yellow/Green) for alignment, status, and error diagnostics. | | **Communication ASIC** | Application-Specific Integrated Circuit for IO-Link or Fieldbus communication. | --- ## 2. Electrical Specifications The MLG-2 Pro series is designed for industrial environments with robust protection against electrical interference. ### Power & Signal * **Operating Voltage:** 18 V ... 30 V DC (Ripple < 5 Vpp). * **Power Consumption:** Typically < 200 mA (Receiver consumes more than the sender due to processing). * **Outputs:** * **Q1:** Digital switching output (PNP/NPN/Push-Pull). * **IO-Link:** V1.1 (COM3), used for transmitting measurement data like "First beam blocked" or "Total beams blocked." * **Inputs:** 1 x Teach-in/Inhibit input. ### Connection Interfaces The unit typically features an **M12, 5-pin or 8-pin male connector** depending on the specific model variation. --- ## 3. Key Electronic Features ### High-Speed Scanning The electronic circuit supports "Highspeed Scan," which reduces the response time per beam, allowing the grid to detect objects moving at high velocities on conveyor belts. ### Cross-Beam Technology The receiver electronics can be programmed to evaluate not just parallel beams, but also crossed beams. This increases the sensitivity to thin objects without increasing the physical beam density. ### Ambient Light Immunity The MLG-2B-R contains filters and electronic suppression to prevent interference from: * High-frequency fluorescent lighting. * Direct sunlight (up to 100,000 lx). * Reflections from shiny surfaces. --- ## 4. Technical Summary Table | Feature | Specification | | :--- | :--- | | **Light Source** | Infrared light (880 nm) | | **Switching Frequency** | Up to 1,000 Hz | | **Enclosure Rating** | IP65 / IP67 | | **Protection Circuits** | UV connections (Reverse polarity protected), Output Q (Short-circuit protected), Interference suppression | | **EMC** | EN 60947-5-2 | ---