EM50SP 3960W Sine Wave Controller – 72V IP67 PC Programmable
EM50SP 3960W Sine Wave Controller – 72V IP67 PC Programmable
EM50SP 3960W Electric Motorcycle Sine Wave Controller – VOTOL ECU, IP67 Water Resistant
Take your electric motorcycle or e-bike build to the next level with the EM50SP 3960W Sine Wave Controller. Engineered for compatibility with QS hub and medium drive motors, this advanced ECU delivers smooth, efficient power delivery with PC programmability, a robust 72V system, and IP67-rated water resistance — built to perform in any condition.
Made in Mainland China.
Key Features
- Wide Motor Compatibility: Designed to work seamlessly with QS wheel hub motors and QS medium drive motors for strong, reliable performance.
- Full Function Support: Compatible with Hall plug, reverse drive, brake, low-speed voltage control (0V), throttle (0–5V), and high brake at 12V.
- PC Programmable: Features a dedicated program port and motion model support — customize settings for parking mode, anti-theft, and magnetic flux attenuation current directly from your PC.
- High Efficiency: Achieves up to 92% maximum efficiency with a 170% flux weakening ratio, effectively enhancing motor speed and overall power output.
- IP67 Water Resistant: Fully protected against dust and water immersion, making it ideal for all-weather electric vehicle builds.
- CE Certified: Meets CE safety and quality standards for reliable, compliant use.
Technical Specifications
| Item Type | ECU Sine Wave Controller |
| Material | ABS |
| Battery Voltage | 72V |
| Maximum DC Current | 55A |
| Boost DC Current | 60A |
| Peak Phase Current | 190A |
| Maximum Power | 3960W |
| MOSFET Configuration | 12 FET |
| Matched Motor Rated Power | 800W – 2000W |
| Maximum Efficiency | 92% |
| Water Resistance Rating | IP67 |
| Flux Weakening Ratio | 170% |
| Communication Protocol | Hall Sensor |
| Certification | CE |
| Applicable Models | Electric Motorcycle, Electric Cycle |
What's in the Box
- 1 × EM50SP Sine Wave Controller
- 3 × Wiring Harnesses
- 5 × Large Screws
- 4 × Small Screws
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Frequently Asked Questions
Q: What motors is the EM50SP 3960W Sine Wave Controller compatible with?
A: The EM50SP is specifically designed for compatibility with QS wheel hub motors and QS medium drive motors, making it a strong match for most QS motor-based electric motorcycle and e-bike builds with rated power between 800W and 2000W.
Q: What does IP67 water resistance mean for this controller?
A: IP67 means the controller is fully protected against dust and can withstand temporary immersion in water up to 1 meter for 30 minutes. This makes it highly durable and suitable for outdoor riding in various weather conditions.
Q: How do I program the EM50SP controller?
A: The EM50SP features a dedicated PC program port. You can connect it to a computer and use compatible software to customize settings such as motion model, parking mode, anti-theft features, and flux attenuation current parameters to suit your specific build requirements.
Q: What is the operating voltage of this sine wave controller?
A: This controller operates on a 72V battery system, with a maximum DC current of 55A, a boost DC current of 60A, and a peak phase current of 190A, delivering up to 3960W of maximum power.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.