## Electronic Specifications for Pepperl+Fuchs OBT80-R2-E2-P The **OBT80-R2-E2-P** is an ultra-miniature diffuse mode photoelectric sensor. Below are the detailed electronic specifications and wiring characteristics. ### 1. Electrical Parameters The sensor operates on a standard DC low-voltage circuit and features a high switching frequency suitable for high-speed detection. | Feature | Specification | | :--- | :--- | | **Operating Voltage ($U_B$)** | 10 ... 30 V DC | | **No-load Supply Current ($I_0$)** | < 20 mA | | **Protection Class** | III | | **Switching Type** | Light-on (The output is active when the target is detected) | | **Signal Output** | 1 PNP output, short-circuit protected, reverse polarity protected, open collector | | **Switching Voltage** | max. 30 V DC | | **Switching Current** | max. 50 mA , resistive load | | **Voltage Drop ($U_d$)** | $\leq$ 1.5 V DC | | **Switching Frequency ($f$)** | Approx. 800 Hz | | **Response Time** | 600 $\mu$s | --- ### 2. Output and Logic The device utilizes a **PNP logic** configuration. In a "Light-on" setup for a diffuse sensor, this means: * **Object Present:** The sensor detects the reflected light, the output transistor closes, and the output signal $(+)$ is sent to the load. * **Object Absent:** The output remains open (High Impedance). ### 3. Connection Diagram The device comes with a fixed cable or a pigtail connector. The standard 3-wire wiring is as follows: ```text Pin/Wire Color | Function | Description ---------------|---------------|-------------------------- Brown (BN) | +V | Supply voltage (10-30V DC) Blue (BU) | 0V | Ground / Common Black (BK) | Output (Q) | PNP Switching Output ``` ### 4. Indicators and Controls Despite its miniature "R2" housing, it includes basic visual feedback: * **Operation Indicator:** Green LED (Static on = Power on). * **Function Indicator:** Yellow LED (Static on = Object detected/Switching state). --- ### 5. Protection Circuitry To ensure longevity in industrial environments, the electronics include: * **Reverse Polarity Protection:** Prevents damage if the $+V$ and $0V$ wires are swapped. * **Short Circuit Protection:** Protects the PNP output stage from overcurrent if the load is shorted. ---