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A control system for preventing malfunction of emergency stop device

A control system and misoperation technology, applied in the direction of control/regulation system, device for preventing/limiting/recovering the movement of parts of the control mechanism, mechanical control device, etc., can solve problems affecting the production safety performance of enterprises, and avoid downtime , Accurate tight stop, and the effect of improving accuracy

Active Publication Date: 2020-08-21
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the automatic control system adopted by a steel company, the S5-95F emergency stop device malfunctioned many times, and the action time lasted only 0.1 seconds and automatically recovered, which caused major production accidents such as the casting machine of the steel company stagnant.
In other automatic control environments, misoperation will also affect the production safety performance of the enterprise

Method used

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  • A control system for preventing malfunction of emergency stop device
  • A control system for preventing malfunction of emergency stop device
  • A control system for preventing malfunction of emergency stop device

Examples

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Comparison scheme
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Embodiment Construction

[0015] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0016] Under the premise of ensuring the normal use of the existing emergency stop function, the identification of malfunction signals is realized, and the judgment cut or delay filter is performed in both software and hardware to avoid production accidents.

[0017] The emergency stop principle includes that the emergency stop device sends a control signal to the control unit, and the control unit sends a control signal to the controller of the equipment, and the controller software shuts down and emergency stops; the output of the emergency stop device simultaneously disconnects the power supply of the device through the power-off drive module to achieve The purpose of simultaneous tight stop of software and hardware.

[0018] The present invention makes improvements on this basis to avoi...

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PUM

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Abstract

The invention discloses a control system for preventing a malfunction of an emergency stop device. Output signals of an emergency stop button are respectively sent to the emergency stop device and a control unit; an output end of the emergency stop device is respectively connected with the control unit and a power-off driving unit; the power-off driving unit is used for controlling the power-off and shutdown of equipment; and the control unit outputs the signals to the equipment for controlling the equipment to be shut down and stopped after receiving emergency stop signals of the emergency stop device and the emergency stop button. The control system for preventing the malfunction of the emergency stop device provided by the invention has the following advantages: the control unit judgeswhether the signals of the emergency stop button are consistent with the emergency stop device or not, thereby improving the accuracy of software shutdown; and in addition, the power failure of hardware is further controlled through a relay of the hardware, emergency stop can be more accurately realized, and the shutdown caused by the emergency stop malfunction can be reduced or avoided.

Description

technical field [0001] The invention relates to the field of electrical automation control, in particular to a control system for preventing malfunction of an emergency stop device. Background technique [0002] In the process of steel production, the function of emergency stop in automatic control is to protect the safe operation of equipment and the entire system. In some cases, the emergency stop device will produce false action. For example, in the automatic control system adopted by a steel company, the S5-95F emergency stop device malfunctioned many times, and the action time lasted only 0.1 seconds and automatically recovered, which caused major production accidents such as the casting machine of the steel company stagnant. In other automatic control environments, misoperation will also affect the production safety performance of the enterprise. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05G5/02
Inventor 项俊阳韦文郁胡玉畅周杰杨兵
Owner MAANSHAN IRON & STEEL CO LTD
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