## E3FZ-R61H2M: Electronic Components & Specifications The **E3FZ-R61H2M** is a high-performance, M18 cylindrical photoelectric sensor developed by Omron. It is specifically designed for industrial automation, featuring a **Retro-reflective** sensing method and high resistance to environmental factors (detergent resistance). ### 1. Core Technical Specifications The following table outlines the primary electronic and physical characteristics of the sensor: | Feature | Specification | | :--- | :--- | | **Sensing Method** | Retro-reflective (with MSR function) | | **Sensing Distance** | 100 mm to 4,000 mm (4 meters) | | **Output Type** | NPN (Open Collector) | | **Light Source** | Red LED (660 nm) | | **Supply Voltage** | 10 to 30 VDC (includes 10% ripple) | | **Current Consumption** | 30 mA maximum | | **Response Time** | 1 ms maximum (Operate or Release) | | **Connection Method** | Pre-wired (2-meter cable) | | **Housing Material** | Stainless Steel (SUS316L) | | **Protection Degree** | IP67, IP69K (High-pressure water resistance) | --- ### 2. Key Electronic Features #### A. MSR (Mirror Surface Rejection) Function The electronics inside the E3FZ-R61H2M include a polarizing filter. This allows the sensor to distinguish between the light reflected from the designated reflector and the light reflected from a shiny, metallic object. This prevents "false positives" when detecting glossy targets. #### B. Output Circuitry (NPN) The sensor utilizes an **NPN Open Collector** output. - **Load Current:** 100 mA max. - **Residual Voltage:** 2V max at 100 mA load current. - **Circuit Protection:** It includes power supply reverse polarity protection, output short-circuit protection, and mutual interference prevention. #### C. Control Wire Functionality The sensor features a **Light-ON / Dark-ON selectable** logic via wiring: - **Light-ON:** Output turns ON when light is received. - **Dark-ON:** Output turns ON when light is interrupted. --- ### 3. Connection Diagram (Pre-wired) Below is the standard wiring configuration for the NPN output type: ```text [ Brown ] --- (+) 10 to 30 VDC [ Blue ] --- (-) 0V (GND) [ Black ] --- Control Output (NPN) [ White ] --- Mode Selection (L-ON/D-ON) ``` --- ### 4. Application Environment Because the housing is made of **SUS316L stainless steel** and the electronics are fully potted, this specific model (H-series) is designed for: * **Food & Beverage Industry:** Withstands harsh cleaning detergents. * **High-Pressure Washdowns:** Rated for IP69K. * **Conveyor Systems:** Long-range detection up to 4 meters.