Patent ID: 8613600
Filing Date: 2013-12-24
Classification: F04D,F05D,Y02B

Abstract:
1. A vacuum pump system, comprising a vacuum pump including a brushless, multiphase, synchronous motor with a permanently magnetically excited rotor, and pump type recognition means; and a control unit for controlling the vacuum pump and including a final stage for controlling the motor, means for determining a rotational speed of the motor, a drive microcontroller connectable with the rotational speed determining means for controlling the final stage in accordance with the rotational speed of the motor and for turning off the final stage in case the rotational speed of the motor exceeds a maximum allowable speed of the motor for a type of the vacuum pump forming part of the vacuum pump system, and a further microcontroller connectable with the pump type recognition means for determining the maximum allowable speed of the motor for the type of the pump forming part of the vacuum system and connectable with the drive microcontroller for communicating the maximum allowable speed to the drive microcontroller.