Power-on-reset of elevator controllers

Details Power-on-reset of elevator controllers Power-on-reset of elevator controllers

2008-04-01

2008-04-01

Donovan, Lincoln (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

C187S247000

Reexamination Certificate

active

07350626

ABSTRACT:
An elevator (9) includes remote elevator monitoring equipment (10) connected by a communication linkage (12) to a central elevator monitoring and control station (11). Main, drive, and door controllers (16-18) are interconnected (19-21) with the monitor lines. Power-on-reset (POR) of controllers may be caused internally or by remotely-operable power relays (23-25) which interrupt power to the controllers. Maintenance personnel at the remote station (11) may order a POR through the communication linkage. In another embodiment, the remote elevator monitor (10) determines presence of a malfunction which a POR may cure and causes a POR internally or by a power relay. In another embodiment, the controller (16a) includes, in its program routines, elevator diagnostics (50) which can recognize an elevator malfunction which a POR may cure, and either cause the relay to interrupt power for an interval or cause an internal POR.

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