The 3650 Brushless DC Gear Motor With PWM Speed Control is a high-performance, compact motion control solution specifically designed for demanding industrial and medical applications. By integrating advanced PWM speed control with a robust built-in driver, this motor offers exceptional precision and an extended service life exceeding 10,000 hours. Whether your project requires 12V or 24V operation, the 3650 series brushless motor provides consistent high torque output and ultra-low noise levels, making it the perfect upgrade for traditional brushed motors in precision-driven equipment.
Dimension
Application Scenarios
Key Applications of 3650 BLDC Motor
- Medical Technology: Precision peristaltic pumps, dialysis machines, and lab automation where quiet, reliable 24/7 operation is critical.
- Smart Automation: Motorized window openers, intelligent locks, and automated vending mechanisms.
- Robotics & AGVs: Small robotic arm joints and AGV drive wheels requiring accurate speed feedback (FG signal).
- Industrial Equipment: Conveyor micro-drives, industrial valve actuators, and cooling fan systems.
Engineer's Tips
💡 Engineer's Note for Buyers: "When selecting between 12V and 24V, we recommend the 24V version for applications requiring continuous high torque. Higher voltage results in lower current draw, which significantly reduces heat buildup and extends the electronics' lifespan. For noise-sensitive environments, ensure the PWM frequency is set between 15kHz - 25kHz to avoid audible resonance."
FAQ
Frequently Asked Questions
3650 Micro Brushless DC Gear Motor
How do I control the rotation speed of the 3650 BLDC motor?
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A: The motor supports PWM (Pulse Width Modulation) speed control. By inputting a PWM signal (typically 15-25kHz) to the control wire, you can adjust the speed linearly. It also features a built-in speed feedback signal (FG) for precise monitoring.
Can I switch the rotation direction (CW/CCW)?
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A: Yes. This motor is equipped with a dedicated direction control wire. Connecting this wire to GND or High Level will allow you to switch between clockwise and counter-clockwise rotation safely.
What are the advantages of this Brushless (BLDC) motor over a Brushed motor?
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A: Compared to brushed versions, the 3650 BLDC motor offers a significantly longer lifespan (up to 10,000+ hours), lower electromagnetic interference (EMI), and higher efficiency. It generates less heat and is virtually maintenance-free as there are no carbon brushes to wear out.
Wiring Instructions & Important Warnings
To ensure the longevity and performance of your 3650 Micro Brushless DC Gear Motor, please follow these wiring guidelines strictly. This motor features a 5-wire interface with an integrated driver for PWM Speed Control.
| Wire Color | Function |
Connection Details |
| Red (VCC) | Power Positive (+) |
Connect to DC 3.7V or 24V (match motor rating). |
| Black (GND) | Power Negative (-) |
Common ground for both power and signals. |
| Yellow (FG) | Speed Feedback |
Outputs 6 pulses per revolution (Frequency Generator). |
| White (CW/CCW) | Direction Control |
Floating: CCW rotation. Connect to GND: CW rotation. |
| Blue (PWM) | Speed Regulation |
Connect to 0-5V PWM signal (Frequency: 15kHz - 25kHz). |
Operational Guide
- Starting Up: Ensure the Red and Black wires are correctly polarized. The motor will typically run at full speed if the Blue (PWM) wire is left unconnected (depending on specific IC settings).
- Speed Adjustment: Use a PWM pulse width governor or an MCU (like Arduino) on the Blue wire. A 0% duty cycle will stop the motor, and 100% will reach maximum RPM.
- Direction Switching: For your safety, do not switch the direction (White wire) while the motor is spinning at high speed. It is recommended to stop the motor before changing rotation to prevent mechanical shock.
⚠️ CRITICAL SAFETY WARNINGS
[FAILURE TO FOLLOW THESE STEPS MAY VOID WARRANTY]
- NO REVERSE POLARITY: Never swap the Red (VCC) and Black (GND) wires. Unlike brushed motors, reversing the polarity on a brushless motor will instantly burn the internal driver board.
- SIGNAL VOLTAGE LIMIT: The Blue (PWM) and White (CW/CCW) wires are logic-level inputs. Do not connect them to voltages higher than 5V, as this may damage the control IC.
- STALL PROTECTION: While the motor includes some level of protection, prolonged stalling (locking the shaft while powered) can lead to overheating and potential failure of the planetary gearbox.
- WIRING SEQUENCE: Always double-check all connections before applying power. We recommend testing with a current-limited power supply for the first trial.
Certification
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