The **W2AP-D14-R2/N** is a specific variant of an industrial-grade **DC Axial Fan**, typically manufactured by brands like **Delta Electronics** or **Wintech**. These fans are engineered for high-performance cooling in telecommunications, server enclosures, and industrial control cabinets. --- ## 1. Technical Specifications The following table highlights the core electronic and mechanical parameters of this part: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 48V DC (Standard Range: 36V – 75V) | | **Current Rating** | ~1.4A - 1.8A (Variable by specific load) | | **Power Consumption** | ~65W - 85W | | **Bearing Type** | Dual Ball Bearing (High Reliability) | | **Housing Material** | Aluminum Die-cast (Internal protection) | | **Impeller Material** | Plastic (UL 94V-0 rated) | | **Termination** | Wire Leads (Usually 2 or 4 wires) | --- ## 2. Electronic Components & Features ### A. Brushless DC (BLDC) Motor Unlike AC fans, this unit utilizes a **BLDC motor**. - **Commutation:** Handled electronically by an internal PCB rather than physical brushes. - **Efficiency:** Significantly higher energy efficiency and lower heat generation compared to AC shaded-pole motors. ### B. Control Interface (The "R2/N" Suffix) The suffix in the part number usually denotes the signal output configuration: - **PWM (Pulse Width Modulation):** Allows the system to control the fan speed dynamically based on temperature sensors. - **Tachometer (FG Signal):** Provides a frequency signal back to the controller to monitor the actual RPM. - **Locked Rotor Alarm:** An internal sensor that triggers a signal if the fan blades are obstructed to prevent coil burnout. ### C. Protection Circuitry The internal PCB includes several safety mechanisms: * **Polarity Protection:** Prevents damage if the positive and negative leads are reversed. * **Soft Start:** Gradually ramps up the motor speed to prevent current spikes on the power supply. * **Auto-Restart:** If the fan stalls, the circuit periodically attempts to restart the motor once the obstruction is cleared. --- ## 3. Wiring Diagram Logic If the unit features a 4-wire interface, the electronic logic follows this standard convention: ```markdown 1. Red Wire -> VCC (+48V DC) 2. Black Wire -> GND (0V) 3. Yellow/Blue-> FG Signal (Speed Monitoring) 4. White/Green -> PWM Input (Speed Control) ``` --- ## 4. Typical Applications Due to the **48V DC** rating, this fan is predominantly found in: * **Network Base Stations:** Cooling for 5G/LTE hardware. * **Server Racks:** High-density computing cooling. * **Solar Inverters:** Managing heat in renewable energy conversion systems.