The **F2VS-D4-R/Q** is a specific part number typically associated with high-performance **Cooling Fan Units**, often manufactured by companies like **Sanyo Denki** (San Ace series) or used in specialized industrial equipment like UPS systems or server racks. Below is a breakdown of the electronic and mechanical specifications for this component. --- ## 1. Technical Specifications The "R/Q" suffix usually denotes specific wiring configurations or lead-wire connectors. | Feature | Specification | | :--- | :--- | | **Component Type** | DC Axial Cooling Fan | | **Input Voltage** | 24V DC (Standard for Industrial equipment) | | **Frame Size** | Approximately 60mm x 60mm or 80mm x 80mm (depending on series) | | **Bearing Type** | Dual Ball Bearing (Long Life) | | **Signal Output** | Pulse Sensor (Tachometer) / Locked Rotor Alarm | | **Connector** | 4-Pin or 3-Pin specialized header | --- ## 2. Key Electronic Features ### A. Brushless DC (BLDC) Motor The core of the F2VS series is a brushless motor. Unlike brushed motors, these use an electronic controller to switch the current in the motor windings, which provides: * **Higher Reliability:** No brushes to wear out. * **Low Electronic Noise:** Reduced Electromagnetic Interference (EMI). ### B. Speed Control (PWM) Many "D4" variants support **Pulse Width Modulation (PWM)**. This allows the host system (like a motherboard or PLC) to control the fan speed dynamically based on the temperature, rather than running at 100% speed constantly. ### C. Protection Circuitry The internal PCB (Printed Circuit Board) typically includes: * **Reverse Polarity Protection:** Prevents damage if the + and - wires are swapped. * **Locked Rotor Protection:** Automatically cuts or reduces power if the blades are obstructed to prevent the motor from burning out. --- ## 3. Wiring Configuration The "R/Q" designation often refers to the wiring harness attached to the fan. 1. **Red Wire:** Positive Power (+24V). 2. **Black Wire:** Ground (GND). 3. **Yellow/White Wire:** Sensor (Tachometer output) - sends a frequency signal to the controller to report the actual RPM. 4. **Blue Wire (if 4-wire):** PWM Control input. --- ## 4. Typical Applications * **Power Supplies:** Heat dissipation for high-wattage industrial PSUs. * **Inverters/UPS:** Cooling for power MOSFETs and IGBTs. * **Server Maintenance:** Replacement fan modules for high-density rack servers. ---