Title:
エレベータブレーキおよびブレーキ制御回路
Document Type and Number:
Japanese Patent JP2007510608
Kind Code:
A
Abstract:
A control circuit for controlling an electromechanical elevator brake is disclosed. The control circuit includes at least one brake coil (L1), a direct-voltage source (BR1), a semiconductor switch arrangement, a current measuring unit, at least two semiconductor switches, and a control unit (CO1) for controlling operation of the circuit. The current measuring unit (Lm1) produces current data that is passed to the control unit (CO1). The at least two semiconductor switches (SW1, SW2) are controlled by the control unit (CO1) such that operation is alternated between the two so that the working condition of each switch can be checked in its turn on the basis of feedback data obtained from the current measuring unit.
Inventors:
Kattainen, Ali
Sillman, Timo
Sillman, Timo
Application Number:
JP2006538877A
Publication Date:
April 26, 2007
Filing Date:
November 10, 2004
Export Citation:
Assignee:
KONE CORPORATION
International Classes:
B66B1/32; B66B5/02; B66B1/36; B66B1/44
Domestic Patent References:
| JPH11165963A | 1999-06-22 | |||
| JPH09267982A | 1997-10-14 | |||
| JPS6145874A | 1986-03-05 | |||
| JP2003292257A | 2003-10-15 |
Attorney, Agent or Firm:
Takao Katori