ID:     PW:   
Korean English
회사소개 제품안내 기술자료 게시판 판매대리점 사이트맵

Judging Steps for Common Problems
Definition
Classification
Operational Principle
Meaning of Technical Index
Technical Requirements per Application
Cautions in Applying and Installing
Considerations in choosing
Cautions in Using
Kinds of Loads
Ambient Conditions
Safety Requirements
Safety Standard Certification
Home > Technology > Definition    
Definition

The definitions of relays

 The relay is an automatic control element whose output variable undergoes a change by leaps and bounds when its input variable (electric, magnetic, sound, light, heat) reaches a set point.



Relaying attribute of the relays

 When the input signal x grows continually from zero to the action value xx upon the pulling-on of the armature iron, the output signal of the relay will jump from y=0 to y=ym, i.e. the normally open contacts from off to on. As soon as the contacts are connected, the input variable x continues to rise while the output variable undergoes no further change. When the input variable drops from a value larger than xx to xf, the relay begins its release, the normally open contact breaks off (see Diagram 1). We call this attribute of the relay the electric relaying attribute or the input-output attribute of the relay.



 The ratio of the release value xf to the action value xx is called the feedback coefficient, i.e. Kf = Xf / Xx T  The ratio of the output control power Pc on the contact to the minimum power Po absorbed by the coil is called the control coefficient of the relay, i.e. Kc= Pc/ Po


Namkwang Centlex Room 412, 440-4 Cheongcheon-dong, Bupyeong-gu, Incheon 403-858, Korea.    E-Mail : sales@handouk.co.kr   TEL : 032-363-3800~4   FAX : 032-363-3805   Copyright 2009 @ HANDOUK Electronics Co. Ltd All Right Reserved.