VOTOL EM85-2sp 72V 85A Sine Wave Motor Controller (230A Peak Phase Current with USB Programming Cable)
$114.68
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VOTOL EM85-2sp 72V 85A Sine Wave Motor Controller (230A Peak Phase Current with USB Programming Cable)
$114.68
Unlock high-efficiency torque and blistering top-end acceleration with the genuine VOTOL EM85-2sp 72V 85A Programmable Sine Wave BLDC Motor Controller. Purpose-built for 72V light electric motorcycles, hyper-scooters, and custom EV builds, this advanced controller outputs 35A continuous / 85A peak DC current and a formidable 230A phase boost current.
Featuring true Field-Oriented Control (FOC) sine wave switching and electronic flux weakening, the EM85-2sp delivers silent, shudder-free starting torque while extending motor top speed beyond standard back-EMF limits. It is natively engineered and dyno-tested to match QS Motor mid-drive motors (such as the QS138 60H / 70H series) and high-performance QS hub motors from 1000W to 3000W. Every kit includes a dedicated PC USB programming cable for precision software parameter tuning.
Key Highlights & Engineering Features
- Formidable 230A Phase Current: Delivers instant throttle punch and steep hill-climbing authority with 85A peak DC battery current and 230A phase peak boost.
- Smooth FOC Sine Wave Operation: Eliminates motor vibration, cogging, and electrical noise, providing silky-smooth low-speed modulation and maximum motor efficiency.
- Electronic Flux Weakening: Dynamically optimizes stator field timing at higher RPMs to unlock 15%–25% higher top speed without requiring battery voltage increases.
- Aluminum Substrate Architecture: High-amperage imported MOSFETs are mounted directly onto an aerospace-grade aluminum baseplate for rapid heat evacuation to the outer finned heatsink.
- One-Line (YXT) Speedometer Support: Features standardized single-wire digital speedometer signal output for clean dashboard integration.
- PC USB Programmability: Fine-tune phase current, low-voltage cutoff, regen braking intensity, throttle curves, and flux weakening via the included Windows PC software.
Motor Pre-Configuration Notice:
To ensure optimal performance right out of the box, please include your motor details in the order notes at checkout:
• Hub Motors: Specify motor model, rated power, pole pairs, and wheel diameter/rated speed.
• Mid-Drive Motors: Specify motor model (e.g., QS138 60H) and rated power.
Our technical team will pre-program the baseline parameters before shipping. Complete PC software and English tuning manuals are supplied with your order.
Technical Specifications Matrix
| Parameter | Specification |
|---|---|
| Brand / Series | VOTOL Genuine EM Series |
| Model Designation | EM85-2sp |
| Rated System Voltage | 72V DC (Operating range 60V–84V DC) |
| Rated Continuous DC Current | 35A |
| Peak Battery DC Current | 85A |
| Peak Phase Boost Current | 230A |
| Drive Waveform | FOC Sine Wave (Field-Oriented Control) |
| Matched Motor Power | 1000W – 2000W Nominal (Up to 3000W+ Peak) |
| Speed Signal Communication | One-Line (YXT) Protocol |
| Chassis Construction | Cast Aluminum Heatsink Body with Aluminum Substrate |
| Approx. Unit Weight | 0.9 kg |
Mechanical Dimensions & Dyno Bench Performance
Programming Cable & Software Interface
Wiring Harness & Connection Pinout Schematic
Frequently Asked Questions (FAQ)
Q: What is the primary difference between the EM85-2sp and earlier EM-series controllers?
A: The EM85-2sp features updated MOSFET driver hardware laid on an aluminum substrate for significantly cooler thermal characteristics, increased phase boost current (up to 230A), and refined low-speed throttle mapping.
Q: Can I use this controller with non-QS motors?
A: While the EM85-2sp is pre-optimized for QS Motor hub and mid-drive platforms, it can drive any 72V BLDC motor with Hall sensors. When pairing with third-party motors, you will need to perform Hall angle matching and parameter calibration using the included USB cable and software.
Q: Does this model support CAN BUS communication?
A: No, the EM85-2sp uses a standardized One-Line (YXT) communication protocol for instrument displays and speedometers. If your setup strictly requires CAN BUS communication, please consult with our team before ordering.
Q: Where can I download the programming software and drivers?
A: Once your order is placed, our support team will provide a secure download link for the Windows PC debugging software, USB driver (CH340/PL2303), and step-by-step PDF manual.
International Shipping & Logistics Notice
Free Worldwide Tracked Shipping: Every VOTOL controller is pre-tested, packaged with shock-absorbent custom foam, and dispatched with international parcel tracking.
Customs & Import Clearance: Orders are processed under standard cross-border trade terms. Buyers are responsible for any destination country customs assessments or local import duties.
Accurate Contact Info: Please verify your shipping address and contact telephone number at checkout to ensure seamless courier communication upon arrival.
