KBL – General Brushless Motor Controller with Regen (12V-96V) (100A-500A)



Additional information

Weight 4.20 lbs
ModelNominal VoltageMax Operating VoltagePeak Current 20 SecondsPeak Current 1 MinuteContinuous CurrentRegen
1.24V model: range of the max operating voltage is 8-30V.
2.48V model: range of the max operating voltage is 18-60V.
3.72V model: range of the max operating voltage is 18-86V.
4.96V model: range of the max operating voltage is 18-115V.
Kelly KBL General Brushless Motor Controller with Regen


  • Intelligence with powerful microprocessor.
  • Synchronous rectification, ultra low drop and fast PWM to achieve very high efficiency.
  • Electronic reversing.
  • Voltage monitoring on 3 motor phases, bus, and power supply.
  • Voltage monitoring on voltage source 12V and 5V.
  • Current sense on all 3 motor phases.
  • Current control loop.
  • Hardware over current protection.
  • Hardware over voltage protection.
  • Support torque mode, speed mode, and balanced mode operation.
  • Configurable limit for motor current and battery current.
  • Low EMC.
  • LED fault code.
  • Battery protection: current cutback, warning and shutdown at configurable high and low battery voltage.
  • Rugged aluminum housing for maximum heat dissipation and harsh environment.
  • Rugged high current terminals, and rugged aviation connectors for small signal.
  • Thermal protection: current cut back, warning and shutdown on high temperature.
  • Configurable 60 degree or 120 degree hall position sensors.
  • Support motors with any number of poles.
  • Up to 40,000 electric RPM standard. Optional high speed 70,000 ERPM, and ultra high speed 100,000 ERPM.
    (Electric RPM = mechanical RPM * motor pole pairs).
  • Support three modes of regenerative braking: brake switch regen, release throttle regen, 0-5V analog signal variable regen.
  • Configurable high pedal protection: the controller will not work if high throttle is detected at power on.
  • Current multiplication: Take less current from battery, output more current to motor.
  • Easy installation: 3 wire potentiometer can work.
  • PWM-able reverse alarm output.
  • Remove fault code LED driver.
  • Current meter output.
  • Standard PC/Laptop computer to do programming. No special tools needed.
  • User program provided. Easy to use. No cost to customers.

General Specifications:

  • Frequency of Operation: 16.6kHz.
  • Standby Battery Current: < 0.5mA.
  • 5V Sensor Supply Current: 40mA.
  • Analog Brake and Throttle Input: 0-5 Volts. Producing 0-5V signal with 3-wire pot.
  • Reverse Alarm, Main Contactor Coil Driver, Meter.
  • Full Power Operating Temperature Range: 0℃ to 50 ℃ (controller case temperature).
  • Operating Temperature Range:-30℃ to 90 ℃, 100℃ shutdown (controller case temperature).
  • Max Battery Current : Configurable.


Kelly KBL Controllers User Manual

Kelly KBL Configuration Program

Kelly KBL Assembly Wiring Diagram(With F-N-R function)