Design World

Closed-Loop Integrated Stepper Motors

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JVL presents a new closed-loop stepper motor technology for its NEMA 23 & 34 integrated stepper motor range from 0,1 to 12 Nm. JVL, the European leader in the development of integrated servo and stepper motor technology, has again developed a new and unique product in the field of integrated motor control. JVL closed-loop integrated stepper motors, QuickStep, provide higher torque, faster acceleration, torque control, stall free operation and quieter movements than traditional step motor systems.

Features include: 

  • Motor phase current regulated up and down according to need
  • Higher torque than servo motors and often without need of gearbox, resulting in a more inexpensive solution
  • True closed-loop control system compensates step angle errors during a movement and correct errors within a full step
  • Smart digital design and very high update rates (36 MHz) means there is no need of any manual adjustment or setup
  • Position feedback and control
  • No stalling. No step losses at all
  • Torque control

Advantages compared to servo motors:

  • Very high Torque at low speed. Often 3-4 times higher in same motor flange size
  • Very high ratio-of-inertia, often up to 40:1
  • Faster commissioning. No tuning needed
  • Lower price. Same price as open loop steppers
  • Totally stiff at standstill. Full holding torque
  • Direct drive without gearbox (better and more precise torque control)
  • Correct positioning without overshoot
  • No oscillation
  • Very short settling time

Benefit in these application from closed-loop stepper motors:

  • Multiple axis applications (RS485, CANopen)
  • Industrial Ethernet: Profinet, EtherNet/IP, EtherCAT, Powerlink, Modbus TCP, SERCOS III
  • Magnetic or Absolute Encoder Feedback
  • Positioning tasks with load changes
  • Applications that require quiet operation, short settling times and precision positioning

Applications include

  • Winding applications
  • Belt drives (start/stop, positioning)
  • Dosing pumps and filler systems
  • Semi-conductor mounting
  • Wafer production
  • Textile machines and industrial sewing machines
  • Robotics
  • Testing and inspection systems

For more information, contact JVL.

Filed Under: Industrial automation, Motors • stepper

 

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