行(Xing)业(Ye)动(Dong)态(Tai)
当(Dang)前(Qian)位(Wei)置(Zhi):(?)三(San)菱(Ling)PLC > 新(Xin)闻(Wen)资(Zi)讯(Xun) > 行(Xing)业(Ye)动(Dong)态(Tai)plc应(Ying)用(Yong)中(Zhong)需(Xu)注(Zhu)意(Yi)问(Wen)题(Ti)
1.温(Wen)度(Du)
PLC要(Yao)求(Qiu)环(Huan)境(Jing)温(Wen)度(Du)在(Zai)0~55℃(?),(?)安(An)装(Zhuang)时(Shi)不(Bu)能(Neng)放(Fang)在(Zai)发(Fa)热(Re)量(Liang)大(Da)的(De)元(Yuan)件(Jian)下(Xia)面(Mian),(?)四(Si)周(Zhou)通(Tong)风(Feng)散(San)热(Re)的(De)空(Kong)间(Jian)应(Ying)足(Zu)够(Gou)大(Da),(?)基(Ji)本(Ben)单(Dan)元(Yuan)和(He)扩(Kuo)展(Zhan)单(Dan)元(Yuan)之(Zhi)间(Jian)要(Yao)有(You)30mm以(Yi)上(Shang)间(Jian)隔(Ge);开(Kai)关(Guan)柜(Gui)上(Shang)、(?)下(Xia)部(Bu)应(Ying)有(You)通(Tong)风(Feng)的(De)百(Bai)叶(Ye)窗(Chuang),(?)防(Fang)止(Zhi)太(Tai)阳(Yang)光(Guang)直(Zhi)接(Jie)照(Zhao)射(She);如(Ru)果(Guo)周(Zhou)围(Wei)环(Huan)境(Jing)超(Chao)过(Guo)55℃(?),(?)要(Yao)安(An)装(Zhuang)电(Dian)风(Feng)扇(Shan)强(Qiang)迫(Po)通(Tong)风(Feng)。(?)
2.湿(Shi)度(Du)
为(Wei)了(Liao)保(Bao)证(Zheng)PLC的(De)绝(Jue)缘(Yuan)性(Xing)能(Neng),(?)空(Kong)气(Qi)的(De)相(Xiang)对(Dui)湿(Shi)度(Du)应(Ying)小(Xiao)于(Yu)85%(无(Wu)凝(Ning)露(Lu))。(?)
3.震(Zhen)动(Dong)
应(Ying)使(Shi)PLC远(Yuan)离(Li)强(Qiang)烈(Lie)的(De)震(Zhen)动(Dong)源(Yuan),(?)防(Fang)止(Zhi)振(Zhen)动(Dong)频(Pin)率(Lu)为(Wei)10~55Hz的(De)频(Pin)繁(Fan)或(Huo)连(Lian)续(Xu)振(Zhen)动(Dong)。(?)当(Dang)使(Shi)用(Yong)环(Huan)境(Jing)不(Bu)可(Ke)避(Bi)免(Mian)震(Zhen)动(Dong)时(Shi),(?)必(Bi)须(Xu)采(Cai)取(Qu)减(Jian)震(Zhen)措(Cuo)施(Shi),(?)如(Ru)采(Cai)用(Yong)减(Jian)震(Zhen)胶(Jiao)等(Deng)。(?)
4.空(Kong)气(Qi)
避(Bi)免(Mian)有(You)腐(Fu)蚀(Shi)和(He)易(Yi)燃(Ran)的(De)气(Qi)体(Ti),(?)例(Li)如(Ru)氯(Lu)化(Hua)氢(Qing)、(?)硫(Liu)化(Hua)氢(Qing)等(Deng)。(?)对(Dui)于(Yu)空(Kong)气(Qi)中(Zhong)有(You)较(Jiao)多(Duo)粉(Fen)尘(Chen)或(Huo)腐(Fu)蚀(Shi)性(Xing)气(Qi)体(Ti)的(De)环(Huan)境(Jing),(?)可(Ke)将(Jiang)PLC安(An)装(Zhuang)在(Zai)封(Feng)闭(Bi)性(Xing)较(Jiao)好(Hao)的(De)控(Kong)制(Zhi)室(Shi)或(Huo)控(Kong)制(Zhi)柜(Gui)中(Zhong),(?)并(Bing)安(An)装(Zhuang)空(Kong)气(Qi)净(Jing)化(Hua)装(Zhuang)置(Zhi)。(?)
5.电(Dian)源(Yuan)
PLC供(Gong)电(Dian)电(Dian)源(Yuan)为(Wei)50Hz、(?)220(1±(?)10%)V的(De)交(Jiao)流(Liu)电(Dian),(?)对(Dui)于(Yu)电(Dian)源(Yuan)线(Xian)来(Lai)的(De)干(Gan)扰(Rao),(?)PLC本(Ben)身(Shen)具(Ju)有(You)足(Zu)够(Gou)的(De)抵(Di)制(Zhi)能(Neng)力(Li)。(?)对(Dui)于(Yu)可(Ke)靠(Kao)性(Xing)要(Yao)求(Qiu)很(Hen)高(Gao)的(De)场(Chang)合(He)或(Huo)电(Dian)源(Yuan)干(Gan)扰(Rao)特(Te)别(Bie)严(Yan)重(Zhong)的(De)环(Huan)境(Jing),(?)可(Ke)以(Yi)安(An)装(Zhuang)一(Yi)台(Tai)带(Dai)屏(Ping)蔽(Bi)层(Ceng)的(De)变(Bian)比(Bi)为(Wei)1:(?)1的(De)隔(Ge)离(Li)变(Bian)频(Pin)器(Qi),(?)以(Yi)减(Jian)少(Shao)设(She)备(Bei)与(Yu)地(Di)之(Zhi)间(Jian)的(De)干(Gan)扰(Rao)。(?)还(Huan)可(Ke)以(Yi)在(Zai)电(Dian)源(Yuan)输(Shu)入(Ru)端(Duan)串(Chuan)接(Jie)LC滤(Lu)波(Bo)电(Dian)路(Lu)。(?)三(San)菱(Ling)FX系(Xi)列(Lie)PLC有(You)直(Zhi)流(Liu)24V输(Shu)出(Chu)接(Jie)线(Xian)端(Duan),(?)该(Gai)接(Jie)线(Xian)端(Duan)可(Ke)为(Wei)输(Shu)入(Ru)传(Chuan)感(Gan)器(Qi)(如(Ru)光(Guang)电(Dian)开(Kai)关(Guan)或(Huo)接(Jie)近(Jin)开(Kai)关(Guan))提(Ti)供(Gong)直(Zhi)流(Liu)24V电(Dian)源(Yuan)。(?)当(Dang)输(Shu)入(Ru)端(Duan)使(Shi)用(Yong)外(Wai)接(Jie)直(Zhi)流(Liu)电(Dian)源(Yuan)时(Shi),(?)应(Ying)选(Xuan)用(Yong)直(Zhi)流(Liu)稳(Wen)压(Ya)电(Dian)源(Yuan)。(?)因(Yin)为(Wei)普(Pu)通(Tong)的(De)整(Zheng)流(Liu)滤(Lu)波(Bo)电(Dian)源(Yuan),(?)由(You)于(Yu)纹(Wen)波(Bo)的(De)影(Ying)响(Xiang),(?)容(Rong)易(Yi)使(Shi)PLC接(Jie)收(Shou)到(Dao)错(Cuo)误(Wu)信(Xin)息(Xi)。(?)
PLC应(Ying)用(Yong)中(Zhong)应(Ying)注(Zhu)意(Yi)的(De)问(Wen):(?)安(An)装(Zhuang)与(Yu)布(Bu)线(Xian)
1.动(Dong)力(Li)线(Xian)、(?)控(Kong)制(Zhi)线(Xian)以(Yi)及(Ji)PLC的(De)电(Dian)源(Yuan)线(Xian)和(He)I/O线(Xian)应(Ying)分(Fen)别(Bie)配(Pei)线(Xian),(?)隔(Ge)离(Li)变(Bian)压(Ya)器(Qi)与(Yu)PLC和(He)I/O之(Zhi)间(Jian)应(Ying)采(Cai)用(Yong)双(Shuang)胶(Jiao)线(Xian)连(Lian)接(Jie)。(?)
2.PLC应(Ying)远(Yuan)离(Li)强(Qiang)干(Gan)扰(Rao)源(Yuan)如(Ru)电(Dian)焊(Han)机(Ji)、(?)大(Da)功(Gong)率(Lu)硅(Gui)整(Zheng)流(Liu)装(Zhuang)置(Zhi)和(He)大(Da)型(Xing)动(Dong)力(Li)设(She)备(Bei),(?)不(Bu)能(Neng)与(Yu)高(Gao)压(Ya)电(Dian)器(Qi)安(An)装(Zhuang)在(Zai)同(Tong)一(Yi)个(Ge)开(Kai)关(Guan)柜(Gui)内(Nei)。(?)
3.PLC的(De)输(Shu)入(Ru)与(Yu)输(Shu)出(Chu)最(Zui)好(Hao)分(Fen)开(Kai)走(Zou)线(Xian),(?)开(Kai)关(Guan)量(Liang)与(Yu)模(Mo)拟(Ni)量(Liang)也(Ye)要(Yao)分(Fen)开(Kai)敷(Fu)设(She)。(?)模(Mo)拟(Ni)量(Liang)信(Xin)号(Hao)的(De)传(Chuan)送(Song)应(Ying)采(Cai)用(Yong)屏(Ping)蔽(Bi)线(Xian),(?)屏(Ping)蔽(Bi)层(Ceng)应(Ying)一(Yi)端(Duan)或(Huo)两(Liang)端(Duan)接(Jie)地(Di),(?)接(Jie)地(Di)电(Dian)阻(Zu)应(Ying)小(Xiao)于(Yu)屏(Ping)蔽(Bi)层(Ceng)电(Dian)阻(Zu)的(De)1/10。(?)
4.PLC基(Ji)本(Ben)单(Dan)元(Yuan)与(Yu)扩(Kuo)展(Zhan)单(Dan)元(Yuan)以(Yi)及(Ji)功(Gong)能(Neng)模(Mo)块(Kuai)的(De)连(Lian)接(Jie)线(Xian)缆(Lan)应(Ying)单(Dan)独(Du)敷(Fu)设(She),(?)以(Yi)防(Fang)止(Zhi)外(Wai)界(Jie)信(Xin)号(Hao)的(De)干(Gan)扰(Rao)。(?)
5.交(Jiao)流(Liu)输(Shu)出(Chu)线(Xian)和(He)直(Zhi)流(Liu)输(Shu)出(Chu)线(Xian)不(Bu)要(Yao)用(Yong)同(Tong)一(Yi)根(Gen)电(Dian)缆(Lan),(?)输(Shu)出(Chu)线(Xian)应(Ying)尽(Jin)量(Liang)远(Yuan)离(Li)高(Gao)压(Ya)线(Xian)和(He) 动(Dong)力(Li)线(Xian),(?)避(Bi)免(Mian)并(Bing)行(Xing)。(?)
PLC应(Ying)用(Yong)中(Zhong)应(Ying)注(Zhu)意(Yi)的(De)问(Wen):(?)I/O端(Duan)的(De)接(Jie)线(Xian)
1.输(Shu)入(Ru)接(Jie)线(Xian)
(1)输(Shu)入(Ru)接(Jie)线(Xian)一(Yi)般(Ban)不(Bu)要(Yao)超(Chao)过(Guo)30米(Mi)。(?)但(Dan)如(Ru)果(Guo)环(Huan)境(Jing)干(Gan)扰(Rao)较(Jiao)小(Xiao),(?)电(Dian)压(Ya)降(Jiang)不(Bu)大(Da)时(Shi),(?)输(Shu)入(Ru)接(Jie)线(Xian)可(Ke)适(Shi)当(Dang)长(Chang)些(Xie)。(?)
(2)输(Shu)入(Ru)/输(Shu)出(Chu)线(Xian)不(Bu)能(Neng)用(Yong)同(Tong)一(Yi)根(Gen)电(Dian)缆(Lan),(?)输(Shu)入(Ru)/输(Shu)出(Chu)线(Xian)要(Yao)分(Fen)开(Kai)。(?)
(3)尽(Jin)可(Ke)能(Neng)采(Cai)用(Yong)常(Chang)开(Kai)触(Chu)点(Dian)形(Xing)式(Shi)连(Lian)接(Jie)到(Dao)输(Shu)入(Ru)端(Duan),(?)使(Shi)编(Bian)制(Zhi)的(De)梯(Ti)形(Xing)图(Tu)与(Yu)继(Ji)电(Dian)器(Qi)原(Yuan)理(Li)图(Tu)一(Yi)致(Zhi),(?)便(Bian)于(Yu)阅(Yue)读(Du)。(?)
2.输(Shu)出(Chu)连(Lian)接(Jie)
(1)输(Shu)出(Chu)端(Duan)接(Jie)线(Xian)分(Fen)为(Wei)独(Du)立(Li)输(Shu)出(Chu)和(He)公(Gong)共(Gong)输(Shu)出(Chu)。(?)在(Zai)不(Bu)同(Tong)组(Zu)中(Zhong),(?)可(Ke)采(Cai)用(Yong)不(Bu)同(Tong)类(Lei)型(Xing)和(He)电(Dian)压(Ya)等(Deng)级(Ji)的(De)输(Shu)出(Chu)电(Dian)压(Ya)。(?)但(Dan)在(Zai)同(Tong)一(Yi)组(Zu)中(Zhong)的(De)输(Shu)出(Chu)只(Zhi)能(Neng)用(Yong)同(Tong)一(Yi)类(Lei)型(Xing)、(?)同(Tong)一(Yi)电(Dian)压(Ya)等(Deng)级(Ji)的(De)电(Dian)源(Yuan)。(?)
(2)由(You)于(Yu)PLC的(De)输(Shu)出(Chu)元(Yuan)件(Jian)被(Bei)封(Feng)装(Zhuang)在(Zai)印(Yin)制(Zhi)电(Dian)路(Lu)板(Ban)上(Shang),(?)并(Bing)且(Qie)连(Lian)接(Jie)至(Zhi)端(Duan)子(Zi)板(Ban),(?)若(Ruo)将(Jiang)连(Lian)接(Jie)输(Shu)出(Chu)元(Yuan)件(Jian)的(De)负(Fu)载(Zai)短(Duan)路(Lu),(?)将(Jiang)烧(Shao)毁(Hui)印(Yin)制(Zhi)电(Dian)路(Lu)板(Ban),(?)因(Yin)此(Ci),(?)应(Ying)用(Yong)熔(Rong)丝(Si)保(Bao)护(Hu)输(Shu)出(Chu)元(Yuan)件(Jian)。(?)
(3)采(Cai)用(Yong)继(Ji)电(Dian)器(Qi)输(Shu)出(Chu)时(Shi),(?)所(Suo)承(Cheng)受(Shou)的(De)电(Dian)感(Gan)性(Xing)负(Fu)载(Zai)的(De)大(Da)小(Xiao),(?)会(Hui)影(Ying)响(Xiang)到(Dao)继(Ji)电(Dian)器(Qi)的(De)使(Shi)用(Yong)寿(Shou)命(Ming),(?)因(Yin)此(Ci),(?)使(Shi)用(Yong)电(Dian)感(Gan)性(Xing)负(Fu)载(Zai)时(Shi)选(Xuan)择(Ze)继(Ji)电(Dian)器(Qi)工(Gong)作(Zuo)寿(Shou)命(Ming)要(Yao)长(Chang)。(?)
(4)PLC的(De)输(Shu)出(Chu)负(Fu)载(Zai)可(Ke)能(Neng)产(Chan)生(Sheng)干(Gan)扰(Rao),(?)因(Yin)此(Ci)要(Yao)采(Cai)取(Qu)措(Cuo)施(Shi)加(Jia)以(Yi)控(Kong)制(Zhi),(?)如(Ru)直(Zhi)流(Liu)输(Shu)出(Chu)的(De)续(Xu)流(Liu)管(Guan)保(Bao)护(Hu),(?)交(Jiao)流(Liu)输(Shu)出(Chu)的(De)阻(Zu)容(Rong)吸(Xi)收(Shou)电(Dian)路(Lu),(?)晶(Jing)体(Ti)管(Guan)及(Ji)双(Shuang)向(Xiang)晶(Jing)闸(Zha)管(Guan)输(Shu)出(Chu)的(De)旁(Pang)路(Lu)电(Dian)阻(Zu)保(Bao)护(Hu)。(?)
PLC应(Ying)用(Yong)中(Zhong)应(Ying)注(Zhu)意(Yi)的(De)问(Wen):(?)外(Wai)部(Bu)安(An)全(Quan)电(Dian)路(Lu)
为(Wei)了(Liao)确(Que)保(Bao)整(Zheng)个(Ge)系(Xi)统(Tong)能(Neng)在(Zai)安(An)全(Quan)状(Zhuang)态(Tai)下(Xia)可(Ke)靠(Kao)工(Gong)作(Zuo),(?)避(Bi)免(Mian)由(You)于(Yu)外(Wai)部(Bu)电(Dian)源(Yuan)发(Fa)生(Sheng)故(Gu)障(Zhang)、(?)PLC出(Chu)现(Xian)异(Yi)常(Chang)、(?)误(Wu)操(Cao)作(Zuo)以(Yi)及(Ji)误(Wu)输(Shu)出(Chu)造(Zao)成(Cheng)的(De)重(Zhong)大(Da)经(Jing)济(Ji)损(Sun)失(Shi)和(He)人(Ren)身(Shen)伤(Shang)亡(Wang)事(Shi)故(Gu),(?)PLC外(Wai)部(Bu)应(Ying)安(An)装(Zhuang)必(Bi)要(Yao)的(De)保(Bao)护(Hu)电(Dian)路(Lu)。(?)
(1)急(Ji)停(Ting)电(Dian)路(Lu)。(?)对(Dui)于(Yu)能(Neng)使(Shi)用(Yong)户(Hu)造(Zao)成(Cheng)伤(Shang)害(Hai)的(De)危(Wei)险(Xian)负(Fu)载(Zai),(?)除(Chu)了(Liao)在(Zai)控(Kong)制(Zhi)程(Cheng)序(Xu)中(Zhong)加(Jia)以(Yi)考(Kao)虑(Lu)之(Zhi)外(Wai),(?)还(Huan)应(Ying)设(She)计(Ji)外(Wai)部(Bu)紧(Jin)急(Ji)停(Ting)车(Che)电(Dian)路(Lu),(?)使(Shi)得(De)PLC发(Fa)生(Sheng)故(Gu)障(Zhang)时(Shi),(?)能(Neng)将(Jiang)引(Yin)起(Qi)伤(Shang)害(Hai)的(De)负(Fu)载(Zai)电(Dian)源(Yuan)可(Ke)靠(Kao)切(Qie)断(Duan)。(?)
(2)保(Bao)护(Hu)电(Dian)路(Lu)。(?)正(Zheng)反(Fan)向(Xiang)运(Yun)转(Zhuan)等(Deng)可(Ke)逆(Ni)操(Cao)作(Zuo)的(De)控(Kong)制(Zhi)系(Xi)统(Tong),(?)要(Yao)设(She)置(Zhi)外(Wai)部(Bu)电(Dian)器(Qi)互(Hu)锁(Suo)保(Bao)护(Hu);往(Wang)复(Fu)运(Yun)行(Xing)及(Ji)升(Sheng)降(Jiang)移(Yi)动(Dong)的(De)控(Kong)制(Zhi)系(Xi)统(Tong),(?)要(Yao)设(She)置(Zhi)外(Wai)部(Bu)限(Xian)位(Wei)保(Bao)护(Hu)电(Dian)路(Lu)。(?)
(3)可(Ke)编(Bian)程(Cheng)控(Kong)制(Zhi)器(Qi)有(You)监(Jian)视(Shi)定(Ding)时(Shi)器(Qi)等(Deng)自(Zi)检(Jian)功(Gong)能(Neng),(?)检(Jian)查(Cha)出(Chu)异(Yi)常(Chang)时(Shi),(?)输(Shu)出(Chu)全(Quan)部(Bu)关(Guan)闭(Bi)。(?)但(Dan)当(Dang)可(Ke)编(Bian)程(Cheng)控(Kong)制(Zhi)器(Qi)CPU故(Gu)障(Zhang)时(Shi)就(Jiu)不(Bu)能(Neng)控(Kong)制(Zhi)输(Shu)出(Chu),(?)因(Yin)此(Ci),(?)对(Dui)于(Yu)能(Neng)使(Shi)用(Yong)户(Hu)造(Zao)成(Cheng)伤(Shang)害(Hai)的(De)危(Wei)险(Xian)负(Fu)载(Zai),(?)为(Wei)确(Que)保(Bao)设(She)备(Bei)在(Zai)安(An)全(Quan)状(Zhuang)态(Tai)下(Xia)运(Yun)行(Xing),(?)需(Xu)设(She)计(Ji)外(Wai)电(Dian)路(Lu)加(Jia)以(Yi)防(Fang)护(Hu)。(?)
(4)电(Dian)源(Yuan)过(Guo)负(Fu)荷(He)的(De)防(Fang)护(Hu)。(?)如(Ru)果(Guo)PLC电(Dian)源(Yuan)发(Fa)生(Sheng)故(Gu)障(Zhang),(?)中(Zhong)断(Duan)时(Shi)间(Jian)少(Shao)于(Yu)10秒(Miao),(?)PLC工(Gong)作(Zuo)不(Bu)受(Shou)影(Ying)响(Xiang),(?)若(Ruo)电(Dian)源(Yuan)中(Zhong)断(Duan)超(Chao)过(Guo)10秒(Miao)或(Huo)电(Dian)源(Yuan)下(Xia)降(Jiang)超(Chao)过(Guo)允(Yun)许(Xu)值(Zhi),(?)则(Ze)PLC停(Ting)止(Zhi)工(Gong)作(Zuo),(?)所(Suo)有(You)的(De)输(Shu)出(Chu)点(Dian)均(Jun)同(Tong)时(Shi)断(Duan)开(Kai);当(Dang)电(Dian)源(Yuan)恢(Hui)复(Fu)时(Shi),(?)若(Ruo)RUN输(Shu)入(Ru)接(Jie)通(Tong),(?)则(Ze)操(Cao)作(Zuo)自(Zi)动(Dong)进(Jin)行(Xing)。(?)因(Yin)此(Ci),(?)对(Dui)一(Yi)些(Xie)易(Yi)过(Guo)负(Fu)载(Zai)的(De)输(Shu)入(Ru)设(She)备(Bei)应(Ying)设(She)置(Zhi)必(Bi)要(Yao)的(De)限(Xian)流(Liu)保(Bao)护(Hu)电(Dian)路(Lu)。(?)
(5)重(Zhong)大(Da)故(Gu)障(Zhang)的(De)报(Bao)警(Jing)及(Ji)防(Fang)护(Hu)。(?)对(Dui)于(Yu)易(Yi)发(Fa)生(Sheng)重(Zhong)大(Da)事(Shi)故(Gu)的(De)场(Chang)所(Suo),(?)为(Wei)了(Liao)确(Que)保(Bao)控(Kong)制(Zhi)系(Xi)统(Tong)在(Zai)重(Zhong)大(Da)事(Shi)故(Gu)发(Fa)生(Sheng)时(Shi)仍(Reng)可(Ke)靠(Kao)的(De)报(Bao)警(Jing)及(Ji)防(Fang)护(Hu),(?)应(Ying)将(Jiang)与(Yu)重(Zhong)大(Da)故(Gu)障(Zhang)有(You)联(Lian)系(Xi)的(De)信(Xin)号(Hao)通(Tong)过(Guo)外(Wai)电(Dian)路(Lu)输(Shu)出(Chu),(?)以(Yi)使(Shi)控(Kong)制(Zhi)系(Xi)统(Tong)在(Zai)安(An)全(Quan)状(Zhuang)况(Kuang)下(Xia)运(Yun)行(Xing)。(?)
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