Elevator monitor and control system with multiple power sources

Details Elevator monitor and control system with multiple power sources Elevator monitor and control system with multiple power sources

1991-10-15

1992-11-10

Pellinen, A. D.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187102, 307 64, B66B 300

Patent

active

051626233

ABSTRACT:
An elevator monitor and control system includes at least one elevator control apparatus, a monitor panel, and a power line interconnecting the elevator control apparatus and the monitor panel. The monitor panel includes an inverter power source backed up by a battery. Each elevator control apparatus includes a first power source for supplying normal power to an internal circuit of the elevator control apparatus, a second power source connected to the power line for supplying power to the elevator control apparatus upon the failure of the first power source, and a control circuit for determining which of the first and second power sources should supply power. A signal conversion control circuit disposed within each of the monitor panels and the elevator control apparatus exchanges data concerning car position, elevator control and the like between the monitor panel and the elevator control apparatus by series transmission through the power line.

REFERENCES:
patent: Re33087 (1989-10-01), Bradford et al.
patent: 4142609 (1979-03-01), Tachino
patent: 4627518 (1986-12-01), Meguerdichian et al.
patent: 4890005 (1989-12-01), Schornack
patent: 4930604 (1990-06-01), Schienda et al.

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