A safety control device for cutting off the power circuit of equipment

Abstract

The invention provides a safe control device for cutting off an equipment power supply circuit. The safe control device comprises a first channel and a second channel; the first channel comprises a first channel preparing module, a first channel starting module, a first channel self-locking module and a first channel outputting module; the second channel comprises a second channel preparing module, a second channel starting module, a second channel self-locking module and a second channel outputting module; the channels monitor each other and mutually serve as the starting conditions of the internal modules, a mandatory orientation relay is adopted as a relay adopted in the control device, and outputting can be started only after self diagnosis of all the modules is completed. The device can reliably cut off the power supply circuit of electromechanical equipment in time and has the self diagnosis function, dangerous outputting cannot be caused when one fault or fault accumulation occurs, the power supply circuit of the electromechanical equipment can be normally cut off or the power supply circuit of the electromechanical equipment cannot be closed, and therefore safe outputting is guaranteed.

Description

technical field [0001] The invention relates to the field of power supply cut-off control of electromechanical equipment, in particular to a safety control device for cutting off the power supply circuit of the equipment. Background technique [0002] The improvement of industrial production efficiency requires the operation frequency and speed of electromechanical equipment to be higher and higher, and the subsequent production safety problems are becoming more and more severe. [0003] The cut-off of the power supply of electromechanical equipment is generally achieved by ordinary switch or relay to realize the control of small current to large current. However, in some more severe occasions, such as stamping machinery, injection molding machinery, elevator start control, abnormal pull-in of relays will cause misoperation and false start of these electromechanical equipment, and for example, short-circuit failure of ordinary electric switch, resulting in power failure of e...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a safety control device for cutting off the power supply circuit of the equipment, which is used to solve the malfunction, It is not easy to cut off the power circuit in case of false start and short circuit

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