The active balancing system AB 9000 automatically compensates unbalance during the operation of a machine. Therefore two balancing rotors are built into the rotating part of the balancing unit. These rotors rotate freely on the rotational axis. If the rotors? balancing weights are positioned directly opposing each other, their effect is neutralised. The entire balancing capacity is obtained by placing the weights at the same angular position. The measured information - rotor speed, angular position of balancing rotors and vibrations - are captured by a fast controller unit using adaptive algorithms. If the vibration exceeds preset limits, an automatic balancing run is started. The balancing rotors are moved via non contact transmission by activation of the stator coils so the drive system is wearless. The setting and operation of the AB 9000 as well as the visualisation of the automatic balancing process is handled by a PC software. The software runs on a PC/laptop or is directly installed on the PC of a machine control. The software also includes field- or pre-balancing in case the rotor unbalance exceeds the balancing unit?s capacity. For the prebalancing run, the balancing rotors are moved in neutral position to correct only rotor unbalance; thus, preventing the consumption of balancing capacity. System characteristics: The AB 9000 balances using a direct adaptive procedure. The positions of the balancing rotors required to compensate the unbalance are calculated based on the actual measuring data. Thus, only a minimum number of balancing steps are required not only for one plane balancing but especially if two planes need to be balanced automatically. As the system adapts to new boundary conditions after each corrective step, changes of a machine?s dynamic transfer properties due to temperature or speed changes pose no problem whatsoever. The innovative active balancing system AB 9000 is a device that very effectively reduces the unbalance vibration. Because of this the availability of machines will be increased significantly. Also maintenance intervals will be extendet, production dowtimes will be avoided. With its ring design, the AB 9000 can be easily integrated in new or existing machine designs. Special features: - Real-time monitoring of unbalance vibrations - Balancing at high rotational speeds in very short time by fast electro-magnetic actuator and adaptive balancing procedures - Pre-balancing software for manual correction of basic unbalance - ProfiBus / ProfNet certified; see certificate - Windows-based operating software; also available for common machine controls Application: - Fully automatic balancing during machine operation - Correction of operation-related unbalances