Control device for an elevator

Details Control device for an elevator Control device for an elevator

1988-01-12

1988-10-25

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 130

Patent

active

047797088

ABSTRACT:
A control device for an elevator which automatically regulates an offset to correct the offset amount contained in a control signal applied to the base circuit of an inverter for driving the hoisting motor of the elevator with a regulator for generating the control signal to detect the output current of the inverter while the elevator is stopped to operate to correct the current to a predetermined value or lower, thereby holding the corrected value even during the operation of the elevator.

REFERENCES:
patent: 4519479 (1985-05-01), Tanahashi
patent: 4600088 (1986-07-01), Yonemoto
patent: 4623042 (1986-11-01), Kamaike
patent: 4625834 (1986-12-01), Tanahashi
patent: 4629035 (1986-12-01), Tanahashi et al.

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