Overload detector for servo driven machines

Details Overload detector for servo driven machines Overload detector for servo driven machines

H - Electricity

02

P

H02P 1/04 (2006.01) B65G 43/02 (2006.01) G05B 23/02 (2006.01) H02P 5/50 (2006.01) H02P 3/00 (2006.01)

Patent

CA 2193987

A controller (42) for detecting abnormal operating conditions of a continuous motion machine (12) such as a packaging machine. The acceleration and velocity of each motor (14) for the various axes (16) of the machine (12) are examined by the controller (42) and rapid deceleration or a more gradual deceleration to a lower velocity relative to a machine velocity are employed for stopping the machine (12) when overloads in the form of jams or mechanical faults occur in moving parts of the machine. By using this system, machine overloads can be detected much earlier than by using conventional techniques, and as a result, damage resulting from overloads and nuisance tripping can be eliminated or greatly reduced.

La présente invention concerne un contrôleur (42) permettant de détecter les conditions de fonctionnement anormales d'une machine à mouvement continu (12) telle qu'une emballeuse. L'accélération et la vitesse de tous les moteurs (14) de tous les arbres (16) de la machine (12) sont surveillés par le contrôleur, la décélération rapide ou la décélération plus progressive jusqu'à une vitesse inférieure à la vitesse normale de la machine étant utilisées pour arrêter la machine (12) lorsque des surcharges prenant la forme de bourrages ou d'incidents mécaniques surviennent dans des pièces mobiles de la machine. Ce système permet de détecter les surcharges machine plus tôt qu'avec les procédés traditionnels, et d'éliminer ou de réduire sensiblement les dommages imputables aux surcharges ou aux déclenchements intempestifs.

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