Correction run for an elevator system

Details Correction run for an elevator system Correction run for an elevator system

1995-10-05

1998-07-21

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

187391, 187294, B66B 134

Patent

active

057837830

ABSTRACT:
A method for performing a correction run by an elevator system having an elevator car following a loss of an elevator car position information includes: detecting a terminal landing magnet in response to the loss of the elevator position information; moving the elevator car away from a predetermined terminal landing until the terminal landing magnet is not detected; running the elevator car toward the predetermined terminal landing in response to not detecting the terminal landing magnet in said moving step; detecting two magnets simultaneously in response to running the elevator car toward the predetermined landing terminal; stopping the elevator car in response to simultaneously detecting the two magnets; and resetting the elevator position information in response to said stopping step.

REFERENCES:
patent: 3773146 (1973-11-01), Dixon, Jr. et al.
patent: 3889231 (1975-06-01), Tosato et al.
patent: 4436185 (1984-03-01), Ludwig et al.
patent: 4750592 (1988-06-01), Watt
patent: 4756389 (1988-07-01), Sakata et al.
patent: 4798267 (1989-01-01), Foster et al.
patent: 5631452 (1997-05-01), Jamieson et al.

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