Conveyors: power-driven – Conveyor or accessory therefor specialized to convey people – With means to control the operation of the section
Patent
1982-02-24
1985-02-19
Valenza, Joseph E.
Conveyors: power-driven
Conveyor or accessory therefor specialized to convey people
With means to control the operation of the section
198323, 198856, B66B 900, B65G 1700
Patent
active
044999860
ABSTRACT:
A control apparatus for a passenger conveyor driven by a three-phase induction motor which is capable of being put selectively into a star-connection or a delta-connection mode. A load of the conveyor is detected on the basis of a current and a voltage supplied to the induction motor, so that when the load is large the motor is driven in the delta-connection mode while when the load is small the motor is driven in the star-connection mode so as to save the power consumption of the conveyor when the load is small.
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Kanasaki Morio
Nakazawa Hayashi
Shima Seiya
Tsuboi Nobuyoshi
Alexander Daniel R.
Hitachi , Ltd.
Valenza Joseph E.
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