## Technical Overview of Delta AFB0512HHD-R00 The **AFB0512HHD-R00** is a high-performance DC axial fan manufactured by Delta Electronics. It belongs to the AFB series, which is known for its reliability in cooling computing and industrial equipment. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Voltage - Rated** | 12V DC | | **Operating Voltage Range** | 7.0V to 13.8V DC | | **Current (Ampere)** | 0.17A (Max 0.24A) | | **Power (Watt)** | 2.04W | | **Speed (RPM)** | 6000 RPM | | **Air Flow** | 16.24 CFM (0.460 m³/min) | | **Static Pressure** | 0.288 in H2O (7.32 mmH2O) | | **Noise Level** | 35.0 dB(A) | | **Bearing Type** | Ball Bearing | --- ### 2. Electronic Interface & Wiring The suffix **"-R00"** in the model number denotes a specific electronic output configuration, typically used for system monitoring. * **Number of Wires:** 3 Wires. * **Terminal Types:** 1. **Red (+):** Positive Power Supply (12V). 2. **Black (-):** Ground (GND). 3. **Blue/White (Signal):** **Locked Rotor Sensor (R00).** #### The "R00" Sensor Function Unlike a Tachometer (FG) which sends pulses to measure RPM, the **R00** sensor is a "High/Low" logic output: * **Normal Operation:** The signal pin stays at a "Low" logic level. * **Locked Rotor:** If the fan blades stop spinning due to an obstruction, the signal pin flips to a "High" logic level. This triggers a system alarm to prevent overheating. --- ### 3. Internal Components & Protection The internal circuitry of the AFB0512HHD-R00 includes several protective electronic features: * **Brushless DC (BLDC) Motor:** Driven by an internal IC that handles electronic commutation, eliminating the need for physical brushes and reducing EMI. * **Polarity Protection:** Built-in diodes protect the fan's control board if the positive and negative wires are accidentally reversed. * **Locked Rotor Protection:** The IC automatically cuts or pulses power to the motor coils if it detects the fan is stuck, preventing the motor from burning out. * **Auto-Restart:** Once the obstruction is removed, the internal timing circuit attempts to restart the fan automatically. --- ### 4. Physical Dimensions * **Size:** 50mm x 50mm * **Thickness:** 20mm * **Weight:** 38 grams * **Frame Material:** Plastic (UL 94V-0) ---