The **M2AMS-AD-R/CE** is a specialized electronic component from the **M2 Series** manufactured by **M-System**. It is a ultra-slim, plug-in signal conditioner designed for industrial automation, specifically serving as a **potentiometer transmitter**. --- ### 1. Core Functional Overview This device is designed to measure the position of a potentiometer (a variable resistor) and convert that physical position into a standard, isolated DC signal (such as 4-20mA or 0-10V). | Feature | Specification | | :--- | :--- | | **Model Type** | Potentiometer Transmitter | | **Input Type** | Potentiometer (Total resistance 100 $\Omega$ to 10 k$\Omega$) | | **Output Type** | Standard DC voltage/current | | **Power Input** | 100 – 240V AC (Operating range 85 – 264V AC) | | **Mounting** | DIN rail (Ultra-slim 29mm width) | --- ### 2. Breakdown of the Model Number (Coding) The suffix **AD-R/CE** provides specific information about the hardware configuration: * **M2AMS**: Base model series (Potentiometer Transmitter). * **AD**: Power Input (85 – 264V AC). * **R**: DC Output (Specific code for 4 – 20 mA DC). * **CE**: CE Marking (Complies with European health, safety, and environmental protection standards). --- ### 3. Key Electronic Specifications The internal electronics are designed for high precision and electrical safety in harsh environments. #### Electrical Isolation The unit provides **3-way isolation**. This means the Power, Input, and Output circuits are electrically separated from each other. * **Isolation Resistance:** $\ge$ 100 M$\Omega$ at 500V DC. * **Dielectric Strength:** 2000V AC @ 1 minute (Input to output to power to ground). #### Performance * **Accuracy:** $\pm$0.1% of span. * **Temperature Coefficient:** $\pm$0.015% / °C. * **Response Time:** $\le$ 0.5 seconds (0 – 90%). * **Reference Voltage:** Provides a stable voltage to the potentiometer to sense displacement. --- ### 4. Physical and Connection Layout The module uses a plug-in base, allowing for the electronic module to be replaced without disconnecting the field wiring. | Terminal Number | Function | | :--- | :--- | | **1 & 2** | DC Output (+) / (-) | | **4 & 5** | Power Input (L / N) | | **7, 8 & 9** | Potentiometer Input (CW, Slider, CCW) | | **Front Panel** | ZERO and SPAN adjustments (Trimmers) | --- ### 5. Common Applications * **Valve Positioning:** Measuring the exact opening percentage of a motorized valve. * **Mechanical Displacement:** Monitoring the movement of a piston or lever. * **Level Sensing:** Using a float-operated potentiometer to track tank levels. ---