The **E3G-R13** is a high-performance, long-distance retro-reflective photoelectric sensor manufactured by **Omron**. It is part of the E3G series, designed for industrial automation environments where robust detection is required over large distances. --- ### 1. Core Technical Specifications The following table summarizes the primary electronic and operational characteristics of the E3G-R13: | Feature | Specification | | :--- | :--- | | **Sensing Method** | Retro-reflective (requires a reflector) | | **Sensing Distance** | 10 meters (when using E39-R2 reflector) | | **Supply Voltage** | 12 to 24 VDC (±10% ripple) | | **Current Consumption** | 30 mA maximum | | **Control Output** | NPN/PNP Selectable (Open collector) | | **Response Time** | 1 ms (Operate or Release) | | **Light Source** | Infrared LED (860 nm) | | **Sensitivity Adjustment** | 1-turn Potentiometer | --- ### 2. Key Electronic Components & Features #### A. Multi-Output Logic The E3G-R13 is versatile because it allows the user to select between **Light-ON** and **Dark-ON** modes via a switch. Additionally, the output can be wired to support both NPN and PNP configurations depending on the PLC requirements. #### B. M12 Connector System Unlike pre-wired models, the R13 variant typically utilizes a standard **M12 4-pin connector**. This enhances durability and allows for quick replacement in a production line without re-wiring the entire cable run. #### C. Optical Filter Logic The sensor includes a specialized optical filter and a **Polarizing Filter** mechanism. This ensures that the sensor only detects light bounced back from the specific corner-cube reflector, preventing "false positives" caused by shiny metal objects passing in front of the beam. #### D. Built-in Timer Functions The E3G series often includes basic timing logic (ON-delay, OFF-delay, or One-shot), which can be adjusted via internal DIP switches to help stabilize signals for high-speed sorting. --- ### 3. Wiring Diagram (M12 Connector) The standard pinout for the DC version is as follows: 1. **Pin 1 (Brown):** +V (12-24 VDC) 2. **Pin 2 (White):** Control Output (Mode dependent) 3. **Pin 3 (Blue):** 0V (GND) 4. **Pin 4 (Black):** Control Output (Primary) --- ### 4. Environmental Protection The electronics are encased in a heavy-duty plastic housing (PBT) designed for industrial use: * **IP Rating:** IP67 (Water and dust resistant). * **Ambient Light Immunity:** Designed to operate under 10,000 lux (incandescent lamp) without interference. ---