The **M2AMS2-23-R2/CE** is a specific model of an **Active Magnetic Sensor** (often referred to as a magnetic pickup or speed sensor) commonly used in industrial automation, engine monitoring, and motion control. Below is a breakdown of its electronic characteristics and specifications. --- ## 1. Device Overview This sensor is designed to detect the movement of ferromagnetic objects (like gear teeth or a tone wheel) without physical contact. Unlike passive sensors, "Active" sensors like this one contain internal signal processing circuitry. | Feature | Description | | :--- | :--- | | **Sensor Type** | Active Magnetic Pickup (Hall Effect or Differential Variable Reluctance) | | **Output Type** | Push-Pull or Open Collector (typically Square Wave) | | **Connection** | M12 Connector or Lead Wires (depending on sub-variant) | | **Housing** | Stainless Steel (Threaded) | --- ## 2. Key Electronic Components & Operation ### A. Internal Circuitry Unlike a simple coil, the **R2/CE** designation implies integrated electronics that include: * **Voltage Regulator:** Allows the sensor to operate over a wide DC input range (typically 10-30V DC). * **Schmitt Trigger:** Converts the raw analog magnetic flux into a clean, digital square wave signal, eliminating noise. * **Amplifier:** Boosts the signal to ensure it can be transmitted over long cable lengths without degradation. ### B. Electrical Specifications While specific data can vary by the manufacturer (often associated with brands like *Loggers* or *Dynalco*), the general specs for this series are: | Parameter | Typical Value | | :--- | :--- | | **Supply Voltage (Vcc)** | 10 – 30 VDC | | **Current Consumption** | < 20 mA | | **Frequency Range** | 0 Hz to 20 kHz (Zero-speed capable) | | **Output Signal** | Square Wave (V_high ≈ Vcc, V_low < 1V) | | **Operating Temperature** | -40°C to +85°C | --- ## 3. Wiring Configuration The "CE" marking indicates compliance with European safety and EMC standards. The electronic interface usually follows this standard 3-wire logic: ```mermaid graph LR A[Brown: V+] --- B(Sensor) C[Blue: 0V/GND] --- B D[Black: Signal Out] --- B ``` 1. **Brown (Pin 1):** Positive Power Supply (+DC). 2. **Blue (Pin 3):** Ground (0V). 3. **Black (Pin 4):** Signal Output (Frequency/Pulse). --- ## 4. Application Logic The sensor electronics detect a change in the magnetic field when a metal tooth passes the sensor tip. * **Approaching Tooth:** The internal magnetic field is distorted; the Schmitt trigger flips the output state. * **Passing Gap:** The field resets; the output state returns to the original value. * **Result:** The output frequency is directly proportional to the RPM (Rotations Per Minute) of the target. ---