Managing an encoder malfunction in an elevator drive system

Details Managing an encoder malfunction in an elevator drive system Managing an encoder malfunction in an elevator drive system

2011-08-30

2011-08-30

Salata, Anthony (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

C187S286000

Reexamination Certificate

active

08006808

ABSTRACT:
An encoder failure in an elevator drive system is detected and managed. A velocity of the elevator drive system is provided by an encoder signal (60) and compared with a minimum velocity threshold (62). An encoder fault timer is incremented when the velocity is less than the minimum velocity threshold (64). The elevator drive system is disabled when the encoder fault timer reaches a fault threshold time (66).

REFERENCES:
patent: 4898263 (1990-02-01), Manske et al.
patent: 5631452 (1997-05-01), Jamieson et al.
patent: 5900596 (1999-05-01), Koshak et al.
patent: 6330936 (2001-12-01), Lence Barreiro et al.
patent: 6392537 (2002-05-01), Tazumi et al.
patent: 6397974 (2002-06-01), Adifon et al.
patent: 6401875 (2002-06-01), Marvin et al.
patent: 6484125 (2002-11-01), Huang et al.
patent: 6492788 (2002-12-01), Agirman et al.
patent: 6604611 (2003-08-01), Liu et al.
patent: 6683432 (2004-01-01), Griffis
patent: 7482771 (2009-01-01), Hahn et al.
patent: 7721852 (2010-05-01), Ishioka et al.

Affiliated with

Also associated with

Rating

Managing an encoder malfunction in an elevator drive system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Managing an encoder malfunction in an elevator drive system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Managing an encoder malfunction in an elevator drive system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2641883