TRANG B ĐI NỊ Ệ
TS. Đ ng Thái Vi tặ ệ
ĐHBK Hà n iộ
1
PH N I : KHÍ C ĐI NẦ Ụ Ệ
CH NG I : PH N T ĐI U KHI NƯƠ Ầ Ử Ề Ể
1.1 Nút n :ấ
+ Nút n t ph c h i :ấ ự ụ ồ
com NO NC
Lß xo
TiÕp ®iÓm
Nóm nhÊn
H×nh1.1: CÊu t¹o nót nhÊn.
H×nh1.2: Mét d¹ng nót
nhÊn cña h·ng Schneider.
2
CH NG I : PH N T ĐI U KHI NƯƠ Ầ Ử Ề Ể
1.1 Nút n :ấ
+ Nút n t ph c h i :ấ ự ụ ồ
- T¸c dông
Nót nhÊn thêng ®îc l¾p ë mÆt tríc cña c¸c tñ ®iÒu
khiÓn, nã dïng ®Ó ra lÖnh ®iÒu khiÓn.
TÝn hiÖu do nót nhÊn tù phôc håi t¹o ra cã d¹ng xung.
3
- Ký hi u :ệ
+ Ký hiÖu theo b¶n vÏ ViÖt Nam (Nga)
TiÕp ®iÓm thêng më. TiÕp ®iÓm thêng ®ãng.
+ Ký hiÖu theo b¶n vÏ Ch©u ¢u
TiÕp ®iÓm thêng më. TiÕp ®iÓm thêng ®ãng
+ Ký hiÖu theo b¶n vÏ NhËt B¶n
TiÕp ®iÓm thêng më. TiÕp ®iÓm thêng ®ãng.
4
1.1 Nút n :ấ
+ Nút n t không t ph c h i : ( D ng kh n c p )ấ ự ự ụ ồ ừ ẩ ấ
H×nh1.3: Mét d¹ng nót dõng
khÈn cña h·ng Schneider.
NhÈn vµo nóm khi
cÊn chuyÓn tr¹ng
th¸i c¸c tiÕp
®iÓm.
Xoay nóm theo
chiÒu mòi tªn khi
muèn tr¶ c¸c tiÕp
®iÓm vÒ tr¹ng th¸i
ban ®Çu
5
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