Versatile controls for brushless DC motors

7th February 2019
Posted By : Alex Lynn
Versatile controls for brushless DC motors

A new family of versatile, feature-rich, configurable controls for brushless DC motors has been introduced by Minarik Drives, with the MDBL Series. MDBL drives control motors ranging from 90 to 280VDC, up to five amps/1.5 HP, using either 115VAC or 230VAC line sources.

On-board trim pots allow operators to quickly set minimum/maximum speeds, acceleration/deceleration rates, motoring and regening current limits, as well as the proportional and integral feedback gains.

An onboard microprocessor allows for custom programming the MDBL Series, for tasks as simple as changing the purpose of a jumper or trim pot, or as complex as programming an entire application-specific routine. The MDBL also integrates PLC-like functionality into operations, eliminating the need for a separate PLC altogether or enhancing systems without PLCs.

These controls are positioning-application capable, with feedback sampling rates of 16Khz. Each drive is designed for feedback from 120° hall effect sensors and can be commanded with a wide range of analog inputs with Minarik Drives’ built-in isolation.

MDBL Series features: 

  • UL 61800-5-1 listed (NOTE: this standard will obsolete UL 508C in 2020).
  • NEMA four packages available in both steel and plastic.
  • Doubler mode: Able to convert 115VAC input into 280VDC output.
  • Isolated inputs: Accepts floating or grounded signals 0 ± 5VDC, 0 ± 10VDC or 4-20mA.
  • Diagnostic LEDs for power and status (undervoltage, overvoltage, short circuit/current trip, overheating warning/trip).
  • Thermally-protected, recognises when overheated as a result of overload.
  • Hall effect sensors: 120°, five VDC, 75mA combined.
  • Separate current limits for operation and regen braking.
  • Sixteen-bit microcontroller on board, ready for mission-specific configurations.

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