Drive device having safety circuits using logic states for an elevator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11661313
APP PUB NO 20180282123A1
SERIAL NO

16001052

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drive device of an elevator includes a frequency converter to be connected to a public AC supply network and an elevator motor. The frequency converter includes a network rectifier configured to be connected to the AC supply network, a motor bridge to be connected to the elevator motor and a DC intermediate circuit located between the network rectifier and the motor bridge. The motor bridge is controlled by a control circuit which feeds the motor bridge with control pulses to regulate the motor speed. The drive device further includes at least one drive prevention circuit connected between the control circuit and the motor bridge. The drive prevention circuit is configured to obtain a safety signal from an elevator safety circuit includes two separate safety input circuits each configured to be connected to the elevator safety circuit to receive a safety signal. Each of the safety input circuits is configured to interrupt the connection between the control circuit and the motor bridge in response to the safety signal status.

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Patent Owner(s)

Patent OwnerAddress
KONE CORPORATION00330 HELSINKI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hytti, Pekka Helsinki, FI 5 18
Kattainen, Ari Helsinki, FI 126 702
Nakari, Arto Helsinki, FI 26 89
Nikander, Juhamatti Helsinki, FI 19 39
Raassina, Pasi Helsinki, FI 23 72
Vairio, Olavi Helsinki, FI 3 15

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