The **M2VF-A4W-R2/N** is a high-performance **Signal Conditioner (Transmitter)** manufactured by M-System. It is specifically designed to convert DC input signals into isolated DC output signals, often used in industrial automation to prevent ground loops and protect control systems. --- ### 1. Key Technical Specifications Below is a breakdown of the electronic characteristics defined by the model code: | Component Code | Description | Specifications | | :--- | :--- | :--- | | **M2VF** | **Series Name** | Mini-M Series Signal Conditioner (Variable Output) | | **A4W** | **Input/Output** | Input: 4–20mA DC / Output: 4–20mA DC (Dual Output) | | **R2** | **Power Input** | 11–27V DC (Ripple 10% p-p max) | | **N** | **Option** | No special options (Standard configuration) | --- ### 2. Internal Electronic Architecture The device functions through three primary stages to ensure signal integrity: 1. **Input Stage:** * Receives the 4-20mA current loop. * Equipped with a low-impedance shunt resistor to convert current to a proportional voltage. 2. **Isolation Barrier:** * Uses **Optical or Magnetic Isolation** to separate the input, output, and power circuits. * Isolation strength is typically **2000V AC** for 1 minute. 3. **Output Stage:** * An operational amplifier circuit regenerates the signal. * Features **Zero and Span adjustments** (potentiometers) located on the front panel for field calibration. --- ### 3. Connection Diagram (General) The unit uses a plug-in socket base (typically 8-pin or 11-pin depending on the specific sub-type). ```markdown Terminal | Function ---------|------------------- 1 & 2 | Output 1 (+ / -) 3 & 4 | Output 2 (+ / -) 5 & 6 | Input (+ / -) 7 & 8 | Power Supply (L+ / N-) ``` --- ### 4. Key Electronic Features * **High Accuracy:** Typically ±0.1% of span. * **Temperature Coefficient:** ±0.015%/°C (ensures stability in hot factory environments). * **Response Time:** Fast response, usually ≤ 0.5 seconds (0 to 90%). * **Dual Output:** Allows one sensor signal to be sent to two different devices (e.g., a PLC and a local display) simultaneously without interference. ---