The **FVF-4WA-R** is a specific model of a **Flat-Cable Connector (Pressure-Welded Type)**, typically associated with industrial automation and control systems, such as those manufactured by companies like **Keyence** or **IDEC**. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications The FVF-4WA-R is a female connector designed for flat ribbon cables, primarily used for sensor distributions and I/O connections. | Feature | Specification | | :--- | :--- | | **Connector Type** | Pressure-Welded (IDC - Insulation Displacement Connector) | | **Number of Pins** | 4-Pin | | **Mounting Type** | Cable Mount (Socket) | | **Contact Plating** | Gold over Nickel (standard for reliability) | | **Color Coding** | Red (Often indicates a specific wire gauge or keying) | --- ### 2. Electrical Characteristics These parts are designed to handle low-voltage signal transmission in industrial environments. * **Rated Current:** Approximately 1.0A to 2.0A (depending on the wire gauge used). * **Rated Voltage:** Usually rated up to 30V DC / 125V AC. * **Insulation Resistance:** Minimum 1000 MΩ (at 500V DC). * **Contact Resistance:** Maximum 20 mΩ (initial). --- ### 3. Key Electronic Features #### A. Insulation Displacement Technology (IDC) The "Pressure-Welded" aspect means you do not need to strip the insulation off the wires. The connector contains sharp metal tines that pierce the insulation to make contact with the copper core when the connector is clamped shut. #### B. Red Housing (R Suffix) The **-R** in the part number usually signifies **Red**. In industrial standards (like the e-CON standard), colors are used to identify compatible wire cross-sectional areas: * **Red:** Typically signifies compatibility with **0.08 to 0.20 mm² (AWG 28 to 24)** wires. #### C. Polarizing Key The housing is shaped to ensure "one-way" insertion. This prevents the user from plugging the sensor or cable in backward, which protects the electronic components from reverse polarity damage. --- ### 4. Wiring Compatibility The FVF-4WA-R is optimized for the following wire types: | Component | Description | | :--- | :--- | | **Wire Type** | Stranded or Solid copper | | **Outer Diameter** | 0.8mm to 1.0mm (including insulation) | | **Standard** | Fits e-CON (Easy Connection) standard sensors | --- ### 5. Application Example ```c++ // Typical use case: Connecting a 4-wire proximity sensor to a PLC // Pin 1: +V (Brown) // Pin 2: Control/Output 2 (White) // Pin 3: 0V/GND (Blue) // Pin 4: Control/Output 1 (Black) ```