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Resistance input type safety relay

A technology of safety relay and resistance input, which is applied in the direction of relays, circuits, electrical components, etc., and can solve problems such as unsatisfactory requirements

Pending Publication Date: 2022-03-29
SHANGHAI CHENZHU INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a resistance input type safety relay, which is used to solve the problem that the resistance characteristic safety sensor in the prior art is only controlled by a dedicated controller, and only realizes the control of the resistance signal. The detection and output cannot meet the needs of applications in the field of safety control

Method used

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Embodiment Construction

[0019] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that in the following description, reference is made to the accompanying drawings, which describe several embodiments of the present invention. It is to be understood that other embodiments may be utilized, and mechanical, structural, electrical, and operational chang...

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Abstract

The resistance input type safety relay solves the problems that in the prior art, a safety sensor with the resistance characteristic is only controlled through a special controller, detection and output of resistance signals are only achieved, and the application requirement in the safety control field cannot be met. The invention provides a safety relay supporting a resistance input type sensor, which can have the detection and output functions of a special controller of a sensor manufacturer, meets the requirement of functional safety, and can be directly used in a safety loop to reach the required safety level.

Description

technical field [0001] The invention relates to the field of safety control, in particular to a resistance input type safety relay. Background technique [0002] As the safety applications in the control field become more and more extensive, the types of safety sensors are gradually increasing. The traditional safety sensor types are generally switch types (such as emergency stop buttons, safety door locks, magnetic switches, safety light curtains, etc.), for resistors The characteristic safety sensor is mainly integrated into the safety mat, the interior of the safety edge. When this type of sensor is not under pressure, it shows a fixed resistance value, and the resistance value ranges from about 1k to 10kΩ; when this type of sensor is under pressure, the resistance value will decrease rapidly, generally less than 10Ω. [0003] Existing sensors of this type are generally controlled with a dedicated controller. This type of sensor is mostly used in the safety control loop....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/00
CPCH01H47/002H01H47/001
Inventor 陈小全李兴磊宋光勇覃云丽
Owner SHANGHAI CHENZHU INSTR
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