The **E3S-R2E41** is a high-performance photoelectric sensor manufactured by **Omron**. It is specifically designed for the stable detection of transparent objects, such as glass bottles, PET containers, and transparent films. --- ### ## Technical Specifications Below is a breakdown of the core electronic and physical specifications for the E3S-R2E41: | Parameter | Specification | | :--- | :--- | | **Sensor Type** | Retro-reflective (with MSR function) | | **Sensing Distance** | 100 mm to 2 meters (adjustable) | | **Power Supply** | 12 to 24 VDC (±10%) | | **Current Consumption** | 40 mA maximum | | **Output Type** | NPN Voltage Output | | **Switching Mode** | Light-ON / Dark-ON (Selectable) | | **Response Time** | 1 ms Max. | | **Housing Material** | Zinc Die-cast (Metal) | | **Light Source** | Infrared LED | --- ### ### Core Electronic Components & Features #### 1. MSR (Mirror Surface Rejection) Function This sensor contains a built-in polarizing filter. This allows the sensor to distinguish between the light reflected from the dedicated reflector and the light reflected from a shiny object (like a stainless steel can or a glass bottle). Only the light from the reflector is processed as a signal. #### 2. NPN Output Circuit The device utilizes an NPN open-collector output. When the sensor is triggered: * It pulls the output signal to the negative (0V) rail. * It is capable of switching loads up to 100mA. #### 3. Sensitivity Adjustment The unit features a **2-turn potentiometer**. This allows for fine-tuning the sensing threshold, which is critical when trying to detect highly transparent materials where the difference in light intensity is minimal. #### 4. Protection Circuitry The internal electronics include: * **Reverse Polarity Protection:** Prevents damage if the power wires are swapped. * **Output Short-circuit Protection:** Safeguards the sensor if the output load shorts. * **Mutual Interference Prevention:** Allows two sensors to be mounted in close proximity without triggering each other. --- ### ### Wiring Diagram Configuration To integrate the E3S-R2E41 into a circuit, follow this standard color-coding guide: ```yaml Brown: Positive Power (+12V to +24V DC) Blue: Negative Power (0V / Ground) Black: Control Output (NPN Signal) Pink: Mode Selection (Connect to Brown for Light-ON or Blue for Dark-ON) ```