The invention refers to an elevator brake controller (10), comprising - a brake supply circuit (12) comprising a rectifier with a mains input side and a DC link output side, whereby in the mains input side and/or in the DC link (DC+, DC-) output side at least one fuse (F1) is connected, - a brake control circuit (14) with at least one brake coil (C) of an elevator brake, which brake coil (C) is connected in series with a control switch (S3) configured to be controlled by an elevator control (18), which series connection of brake coil (C) and control switch (S3) is connected to the DC link (DC+, DC-), - a brake safety circuit (16) which is connected between the brake supply circuit (12) and the brake control circuit (14), which brake safety circuit (16) comprises a first safety switch (S1) being connected in series with the brake coil (C) as well as a second safety switch (S2) which is connected in parallel to the brake coil (C), whereby the first and second safety switches (S1, S2) are configured to be controlled by an elevator safety circuit (20). This brake controller offers an improved cut-off safety in safety relevant situations.
Elevator brake controller
2021-01-26
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
ADJUSTABLE BRAKE CONTROLLER OF AN ELEVATOR BRAKE, ELEVATOR BRAKE AND ELEVATOR
European Patent Office | 2020
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