Elevator system

Details Elevator system Elevator system

B - Operations, Transporting

66

B

364/34

B66B 5/02 (2006.01) B66B 1/34 (2006.01) B66B 5/10 (2006.01)

Patent

CA 1056523

ELEVATOR SYSTEM ABSTRACT OF THE DISCLOSURE An elevator system including an elevator car and counterweight mounted for movement in a structure by a trac- tion drive arrangement which includes a drive sheave and a drive motor. A first tachometer provides signals responsive to the drive motor and a second tachometer provides signals responsive to movement of the elevator car. The signals from the first and second tachometers are used in both functional and monitoring circuits to control the operation of the elevator system in a highly efficient self-checking manner.

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