Method and apparatus for fault time operating of an elevator

Details Method and apparatus for fault time operating of an elevator Method and apparatus for fault time operating of an elevator

B - Operations, Transporting

66

B

321/23, 364/23

B66B 5/00 (2006.01) B66B 1/28 (2006.01) B66B 1/34 (2006.01) B66B 5/02 (2006.01)

Patent

CA 1215792

METHOD AND APPARATUS FOR FAULT TIME OPERATING OF AN ELEVATOR ABSTRACT OF THE DISCLOSURE An elevator drive motor 1 is normally energized from an AC power source 8 via an AC-DC converter 4 and a DC-AC inverter 3. When the power source fails the elevator is braked and the inverter is supplied from an emergency battery 11 to access the nearest floor for passenger discharge. If a fault occurs in the inverter it is disconnected from the motor by opening a switch contact 15a, and the closing of a further contact 15b enables the converter to energize the motor in a "reverse function" mode from the battery.

460535

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