Magnetic brake controller

A technology for braking electromagnets and controllers, which is applied to electromagnets with armatures, electromagnets, electrical components, etc., can solve the problems of high power consumption, heavy weight, and many circuit components.
CN101800113BActive Publication Date: 2012-05-16SHIJIAZHUANG WULON BRAKE
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SHIJIAZHUANG WULON BRAKE
Publication Date
2012-05-16

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Abstract

The invention relates to a magnetic brake controller, which comprises a current limiting circuit (1), a low voltage checking circuit (2), a starting circuit (3), a full-wave rectification circuit (4), a subsequent flow attenuation circuit (5), a high voltage checking circuit (6) and a power supply on-off fast reaction circuit (7). The invention uses a capacitor to limit current so that the consumption and the fault rate are almost zero. A fast attenuation induction subsequent flow link is set so that the demagnetization of an electromagnet is quick and the brake of a brake is fast. The invention has no electromagnetic interference, does not cause higher harmonics pollution on a power supply and can work when UPS is used for supplying power.
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Description

technical field

[0001] The invention relates to a braking electromagnet control circuit, in particular to a braking electromagnet controller. Background technique

[0002] Most of the brakes used in elevators and hoisting machinery use electromagnets as driving devices. The working characteristics of this electromagnet are to use a large current to pull in to realize the forced release of the brake, and use a small current to maintain the release state of the brake. . In the electromagnet controller used in the past, the method of generating and maintaining a small current is to use a step-down transformer and to use a thyristor to control it. The disadvantage of using a step-down transformer is that it is bulky, heavy, and consumes a lot of power; the disadvantage of using a thyristor is that there are many circuit components and a high failure rate. The power supply causes pollution and cannot work under the UPS power supply, and the UPS power supply is a short-term emer...

Claims

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