The **M2VT-A1-R/K** is a high-performance **Thin-Type Signal Conditioner (Isolator)** manufactured by **M-System**. Its primary function is to receive a DC voltage or current input and provide an isolated DC output, typically used to prevent ground loops and protect control systems. --- ### 1. Model Code Breakdown The alphanumeric suffix defines the specific electronic configuration of the unit: | Code Segment | Description | Specific Detail | | :--- | :--- | :--- | | **M2VT** | Model Series | Ultra-slim signal conditioner | | **A1** | Input Type | 4 – 20 mA DC | | **R** | Power Input | 24V DC | | **K** | Output Type | 0 – 10V DC | --- ### 2. Key Electronic Specifications The internal circuitry is designed for precision and high galvanic isolation. * **Isolation Structure:** 3-way isolation (Input to Output to Power). * **Isolation Resistance:** ≥ 100 MΩ with 500V DC. * **Dielectric Strength:** 2000V AC @ 1 minute (Input to output to power to ground). * **Accuracy:** ±0.1% of span. * **Temperature Coefficient:** ±0.015% per °C (±0.008% per °F). * **Response Time:** ≤ 0.5 seconds (0 – 90%). --- ### 3. Physical & Terminal Interface The unit uses a plug-in base structure, allowing the electronic module to be replaced without disconnecting wires. | Terminal No. | Function | Connection Type | | :--- | :--- | :--- | | **1 & 2** | Output (+) / (-) | 0 – 10V DC signal | | **3 & 4** | Power (+) / (-) | 24V DC supply | | **5 & 6** | Input (+) / (-) | 4 – 20 mA DC loop | --- ### 4. Critical Electronic Components/Features * **Input Shunt Resistor:** For the `A1` model, a precision 250Ω resistor is typically integrated to convert the 4-20mA current into a voltage for processing. * **Zero/Span Adjustments:** Located on the front panel. These are multi-turn potentiometers used to calibrate the electronic offset and gain. * **Status Indicator:** A green LED on the front face indicates the power supply status. * **DIN Rail Mounting:** The chassis is designed for standard 35mm DIN rail installation, saving significant cabinet space due to its 5.9mm (0.23") width. ---