Torque Motor Control application

Torque motor to control the dosing in an injection moulding machine

Characteristics:

  • 28 poles synchronous brushless motor
  • Rated torque: 2000 Nm
  • Rated motor speed: 250 rpm
  • Max motor revolution speed: 280 rpm
  • Rated motor current: 172 A with 90Kw OpenDrive
  • Resolver feedback
  • Speed control with configurable torque limit

Advantages in using torque motor:

  • No gear box between motor and load (direct connection of the motor)
  • Reduction of motor's weight (much more compact)
  • No machine vibration
  • Possibility to flux weaken the motor (you can achieve higher speed that the rated motor speed)
  • High energy saving
  • High torque, best dynamic response