CÆSIUM® Cs-40 – Motor Controller for LEVs

Neomium introduces the CÆSIUM® Cs-40 motor controller for Light Electric Vehicles (LEVs): Supplying 40 kilowatts (54 HP) of peak power output, it delivers the power needed for even the toughest applications. Operating at up to 200V , it overcomes the thermal challenges typical of high-power, low-voltage systems – while also significantly reducing overall system weight. It uses the renowned VESC® software for parametric open-source controls.

Neomium’s CÆSIUM® Cs-40 finally brings open-source motor control to industrial-grade, high-performance applications – bridging the gap between flexibility and reliability.

Features:

• High Voltage and Current Capacity: The Cs-40 supports input voltages up to 200V (specified 46S Li-Ion) and can handle phase currents up to 220A, with continuous operation over 150A, depending on cooling and ambient conditions. This makes it suitable for high-power applications.​
• Comprehensive Motor Compatibility: Designed to work reliably with a wide range of motors, including low-inductance types, the Cs-40 supports sensorless, sensored, and hybrid operation modes, ensuring flexibility across various motor configurations.​
• Advanced Communication Interfaces: Equipped with multiple communication options such as CAN, USB, UART, and additional I²C and SPI interfaces via COM ports, the Cs-40 facilitates seamless integration with various systems and peripherals.​
• Robust Protection Mechanisms: The controller offers adjustable safeguards against low and high input voltage, excessive motor and input currents, high recuperation braking currents, over-RPM in both directions, and overheating of both MOSFETs and motors (with appropriate sensors), enhancing system reliability and safety.​
• Real-Time Data Analysis and Monitoring: Through its communication ports, the Cs-40 provides real-time data analysis and readout capabilities. Users can monitor parameters such as speed, power, load factor, current flow, estimated range, and battery status via the VESC® tool app, enabling informed decision-making and system optimization.​
• User-Configurable Input Sources and Throttle Curves: The Cs-40 supports various input sources, including CAN, USB, Serial, and ESP32-C3 channels (with firmware flashing), and offers adjustable throttle curves and acceleration settings for all input sources, allowing for tailored performance to meet specific application needs.

These features position the CÆSIUM Cs-40 as a versatile and powerful motor controller suitable for a wide range of high-performance applications.

CÆSIUM® Cs-40 - Specified Ratings

• Absolute maximum input voltage: 200V (specified for up to 46S Li-Ion)
• Phase current peak: 220A
• Phase current continuous: >150 A (depends on cooling and outside temperature)
• ERPM: 100.000

Cs-40 marks the first model in a series of controllers. Its main intended use is for LEVs, such as electric motorcycles, small electric aircraft, large drones and e-Karts.

Whether you're building or retrofitting an electric powertrain, reach out to us – or order your first CÆSIUM® Cs-40 motor controller right here today.

Current lead time: 14 days