The **OBT30-R2-E2-L** is a subminiature background suppression photoelectric sensor manufactured by Pepperl+Fuchs. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. General Electronic Specifications The sensor is designed for high-precision detection in space-constrained environments. | Parameter | Specification | | :--- | :--- | | **Operating Voltage ($U_B$)** | 10 ... 30 V DC | | **No-load Supply Current ($I_0$)** | < 10 mA | | **Output Type** | 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. Optical-Electronic Features The "L" in the model name indicates a **Laser** light source, which provides specific electronic and optical advantages. * **Light Source:** Laser diode (Red light). * **Laser Class:** 1 (Safe under all conditions of normal use). * **Light Type:** Modulated visible red light. * **Background Suppression:** Electronics are tuned to ignore objects beyond the set sensing range (30mm), regardless of color or reflectivity. --- ### 3. Connection and Output Logic The **-E2** suffix denotes the output configuration: * **Output Logic:** **PNP** (Positive-Negative-Positive). * **Switching Mode:** **NO** (Normally Open) / Light-ON. * **Connection:** Typically features a fixed cable or a M8 connector (check specific variant, but standard R2 series uses 2m fixed cable). #### Wiring Diagram (Standard Color Codes) | Pin/Wire Color | Function | Description | | :--- | :--- | :--- | | **Brown (BN)** | +VCC | Positive Supply (10-30V) | | **Black (BK)** | Output | Switching Signal (PNP) | | **Blue (BU)** | L- | Ground (0V) | --- ### 4. Status Indicators The sensor housing includes integrated LEDs to monitor electronic status: * **Green LED:** Power on / Static illumination. * **Yellow LED:** Light path free (illuminates when the object is detected within the sensing range). --- ### 5. Protective Circuitry The internal electronics are ruggedized for industrial use: * **Reverse Polarity Protection:** Prevents damage if the power leads are swapped. * **Short Circuit Protection:** Protects the PNP output transistor from overcurrent. * **Degree of Protection:** IP67 (Electronic components are sealed against dust and water immersion).