Tech Specs – SOLO UNO v2
SOLO aims to be a Universal Driver and Controller for various types of electrical motors. The current version can interface with DC, BLDC, PMSM and ACIM motors. SOLO is crafted with cutting edge technologies in the industry to guarantee best performances. Here are some of the technical characteristics of SOLO:
- Wide input voltage supply range (from 8V to 58V)
- The continuous output current of 32A, Max Current of 100A
- Capable of controlling DC, BLDC, PMSM, EC Coreless and ACIM motors
- Dual Core with parallel processing architecture
- Extremely fast FOC loop-rate up to 140kHz (7µs complete execution time)
- Bidirectional Regenerative Brake (maxed to current limit)
- Active Brake chopper circuitry with selectable activation voltage
- Over-current, Over-voltage, Over-Temperature, Under-voltage and Reverse Polarity Protection
- Selectable output PWM switching frequency (from 8kHz to 80kHz)
- Automatic self-tuning and identification of Motor parameters
- Open-loop or Closed-loop Control modes
- Speed, Torque or Position control
- Advanced Sensor-less and Sensor-based Control
- Advance Field Oriented Control
- PWM and Analogue voltage input for Controlling Speed and Torque
- USB, UART, and CANopen Communication enabled
- SVPWM modulation
- Encoder and Hall Sensor Input with +5V supply
- +5V/1A (5W) output to supply external modules
- Updatable Firmware
- Heatsink mounted on the back of the board to enhance the thermal behavior
- 2000µF onboard BUS capacitance
Supported Motor Types
DC (DC Brushed)
BLDC (Brushless DC)
PMSM (Permanent Magnet Synchronous Motor, AC Brushless)
ACIM ( AC Induction Motor)
Control Loops Update Rate
Torque Loop: 7µs
Speed Loop: 500µs
Position Loop: 500µs
Torque Controller: Automatic
Speed Controller: Manual
Position Controller: Manual
Supply Voltage Range
Output PWM Frequency
8kHz to 80kHz
Max. Continous Power
Input Command Signals
UART, USB, CANopen
Make mistakes, safely
No matter how skilled, we all make mistakes. In hardware projects, this means losing time and money. We designed SOLO with safety in mind. We offer protection against reverse polarity connections, output short-circuits, over-voltage, or under-voltage on your main supply input (BUS) and over-current consumptions. You now use motors with fewer worries.
For experts and non-experts alike
SOLO is easy but not simple. The experienced user will find many advanced functionalities. From sending packets through USB, UART, or CAN to use industrial state of the art technologies like Closed-loop and Open-loop, Sensored, Sensor-less, and Field-oriented control.
Simply control the speed, torque, and position of your motor’s shaft separately. Enjoy these features while SOLO automatically detects the motor’s parameters and self-tunes.
Closed Loop Sensorless Speed Control
SOLO features closed-loop sensorless speed control for DC brushed, Brushless DC, Permanent Magnet Synchronous and AC Induction motors. Using this feature the user will be able to keep the speed of their motors constant regardless of the load applied on the shaft of the motor as long as the motor itself can sustain it.
In sensorless mode, there’s no need to connect any sort of position sensors like Hall-Effect sensors or Encoders, and this will reduce the cost and wiring of the final products alongside with much higher reliability gained due to relying only on the electrical motor itself than anything else.
SOLO in this mode offers you a very robust experience even in very harsh conditions like below when the direction of the Brushless DC motor changes abruptly but as can be seen SOLO could fix the speed on both directions immediately with a very low error margin.
Closed Loop Sensorless Torque Control
This feature enables SOLO to directly control the Torque of DC brushed, Brushless DC and Permanent Magnet Synchronous Motors directly and independently from the speed using Field oriented Control! In simple language in this mode SOLO keeps the exerted Torque of the Motor constant at all times regardless of the amount the load on the shaft of the Motor. This feature will enable users to go on with force control, impedance control and even having instant torque feature on their electric vehicles, Ebikes, Escooters and so on.
The Torque control is done totally automatically in SOLO and the users by pushing down a button can immediately start utilizing it. In the image below you can see how SOLO kept the torque constant in a PMSM motor while the load was kept varying constantly.
Advanced Sensorless control with fast Angle Estimations
Closed loop speed or Torque control using Encoders or Hall-Sensors
Field Oriented Control (FOC)
Automatic Parameter Identification of Motors
Since each electrical motor is different with the other, SOLO identifies most of the required parameters of each motor itself in less than a second, this makes you able to control your motor either in Torque or Speed control mode in the simplest and fastest way possible. In the simplest form, you can control either of the torque or speed of your motor with a single potentiometer. Of course you can use more advanced features like sending PWM or Analogue voltages or even sending packets through UART, CAN or USB which are existing on SOLO, to control each of the features or read the motor feedback in real-time.
Active Temperature Control
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