The **UDS-C2-R/Q** typically refers to a high-performance **Industrial Ultrasonic Digital Sensor** (often associated with brands like Pepperl+Fuchs or specialized sensor manufacturers). These sensors are primarily used for double-sheet detection or material thickness monitoring. --- ### 1. Core Electronic Components The internal architecture of the UDS-C2 system is divided into the **Evaluation Unit** (Controller) and the **Ultrasonic Transducers**. | Component | Function | Key Specifications | | :--- | :--- | :--- | | **Ultrasonic Transducer** | Converts electrical energy into high-frequency sound waves. | Operating Frequency: ~255 kHz - 400 kHz | | **Digital Signal Processor (DSP)** | Processes incoming analog echoes into digital data. | High-speed sampling for real-time detection. | | **Output Stage (NPN/PNP)** | Switchable electronic outputs for PLC communication. | Load current: 100-200 mA; Short-circuit protected. | | **Operational Amplifiers** | Amplifies the micro-signals received by the transducer. | High Gain, Low Noise. | | **EEPROM/Flash Memory** | Stores calibration data and configuration settings. | Non-volatile storage. | --- ### 2. Operational Logic & Signal Flow The electronic parts work in a "Emitter-Receiver" synchronization loop: 1. **Pulse Generation:** The evaluation unit sends a high-voltage pulse to the emitter transducer. 2. **Piezoelectric Effect:** The ceramic element inside the transducer vibrates, sending an ultrasonic burst through the material. 3. **Attenuation Analysis:** The receiver transducer picks up the vibration. The electronics calculate the **amplitude loss**: * **Air/Single Sheet:** High signal received. * **Double Sheet:** Low signal (due to the air gap between layers reflecting the sound). 4. **Threshold Logic:** The integrated logic gate compares the signal against a "Teach-in" value stored in memory. --- ### 3. Electrical Specifications (Standard Series) The following table highlights the typical electrical environment for these parts: | Parameter | Value | | :--- | :--- | | **Operating Voltage ($U_B$)** | 18 - 30 V DC | | **No-load Supply Current** | $\le$ 80 mA | | **Input Type** | 1 Function input (Teach-in) | | **Output Type** | 2 Switch outputs (Double sheet/Single sheet) | | **Connection Type** | M12 Connector (4 or 5-pin) | --- ### 4. Diagnostic Indicators The electronic assembly includes **LED status indicators** soldered to the main PCB, visible through the housing: * **Green LED:** Power on / Ready status. * **Yellow LED:** Single sheet detected. * **Red LED:** Double sheet or error detected. --- ### Summary of the "R/Q" Variant The **R/Q** designation usually refers to specific output logic or mounting configurations: * **R:** High-speed response or specialized range adjustment. * **Q:** Push-pull output (supports both NPN and PNP logic).