CONTROL SYSTEM FOR ELEVATOR

A control system for an elevator includes a first car speed detection device and a second car speed detection device to measure a moving speed of the car, a hoist brake to apply braking to the hoist, emergency stop equipment to brake the car by grasping guide rails, and a control device to control t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KONDO, Takeshi, INOUE, Shinsuke, NOGUCHI, Naoaki
Format:	Patent
Sprache:	eng
Schlagworte:	ELEVATORS ESCALATORS OR MOVING WALKWAYS HAULING HOISTING LIFTING PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	A control system for an elevator includes a first car speed detection device and a second car speed detection device to measure a moving speed of the car, a hoist brake to apply braking to the hoist, emergency stop equipment to brake the car by grasping guide rails, and a control device to control the hoist, the hoist brake, and the emergency stop equipment based on outputs of the first car speed detection device and the second car speed detection device. If two pieces of velocity data that have been output from the first car speed detection device and the second car speed detection device respectively differ from one another and acceleration data of the car calculated from one that is higher of the two pieces of velocity data is equal to or more than a predetermined threshold, the control device decides if either car speed detection device is abnormal.