Ho kenya li-isolator tsa matšoao likhaboteng tsa taolo ea PLC

Lefapheng la boiketsetso ba indasteri, likhabinete tsa taolo tsa PLC (Programmable Logic Controller) li bapala karolo ea bohlokoa, li ikarabella bakeng sa ho amohela matšoao ho tsoa ho li-sensor le li-actuator tse fapaneng, le ho fihlella taolo e nepahetseng ea ts'ebetso ea tlhahiso ka ts'ebetso ea logic ea kahare. Leha ho le joalo, lits'ebetsong tse sebetsang, likhabinete tsa taolo ea PLC hangata li tobana le libaka tse fapaneng tse rarahaneng tsa motlakase le mathata a tšitiso ea matšoao, e leng se ka lebisang ho se sebetseng hantle ha sistimi ea taolo, ho hloleha khafetsa, esita le ho beha kotsing polokehong ea lisebelisoa le basebetsi. Ka hona, ho eketsa lets'oao le arohanengLi-ator ho ea ho likhabinete tsa taolo tsa PLC e se e le tharollo e tloaelehileng.

Mesebetsi e meholo ea li-asolator tsa matšoao e kenyelletsa ho thibela phetiso ea tšitiso ea motlakase, ho fokotsa ho hlaha ha ho hloleha ha sistimi, le ho fana ka karohano haeba lisebelisoa li hloleha sebakeng seo, ho thibela ho ata ha liphoso tsamaisong eohle ea taolo. Ka ho fetola le ho fetola matšoao a amoheloang ke PLC ka lisebelisoa tsa semiconductor, ebe li a arola le ho a fetola ho sebelisoa lisebelisoa tsa ho lemoha tsa mahlo kapa tsa makenete, 'me qetellong li a fetola le ho a khutlisetsa ho letšoao la pele kapa matšoao a fapaneng, ts'ebetso ena e netefatsa botsitso le ho nepahala ha lets'oao, ha ka nako e ts'oanang e thibela tšenyo ho PLC le ho fokotsa tšusumetso ea matšoao a sebakeng seo ho PLC, haholo-holo matšoao a sa tsitsang. Ho phaella moo, li-asolator tsa matšoao li ka boela tsa finyella phetoho ea lets'oao, joalo ka ho fetola matšoao ho tsoa likhokahanong tsa PT10 ho ea ho matšoao a 4-20mA le ho a kenya lits'ebetsong tsa PLC, ho qoba ka katleho likhohlano lipakeng tsa motlakase le mehloli ea motlakase le ho rarolla bothata ba tšitiso e kopanetsoeng pakeng tsa li-loop le lisebelisoa.

Lits'ebetsong tse ikhethileng, joalo ka moleng oa tlhahiso ea fektheri ea tšepe, tekanyo le taolo li finyelloa ka PLC, lisebelisoa tsa othomathike sebakeng seo, le li-actuator sebakeng seo. PLC e beoa ka har'a khabinete ea taolo e fumanehang limithara tse makholo a 'maloa hole le sebaka seo (e sebetsa mochesong oa kamore), le lisebelisoa tsa othomathike kapa li-thermocouple tse tsoang sebakeng seo lipontšo tsa tlhahiso ka lithapo ho ea ka khabineteng ea taolo ka phapusing ea taolo. Nakong ena, lets'oao le kenang ho PLC le tlameha ho aroloa 'me le ka boela la hloka ho fetoloa, joalo ka ho arola 4-20mA le ho le fetolela ho 0-5V pele le kena ho PLC. Lisebelisoa tse qetang ho aroloa le ho fetoloa ha matšoao a thermocouple li bitsoa "thermocouple signal isolator" kapa "thermocouple temperature transmitter". Mosebetsi oa eona oa mantlha o kenyelletsa ho arola lets'oao la ho kenya le tlhahiso, hammoho le ho fetola lets'oao la boemo ba mV la ho kenya ho tloha ho thermocouple ho ea matšoao a tloaelehileng a indasteri (4-20mA, 0-5V, 0-10V).

Ka bokhutšoanyane, ho kenya li-asolator tsa matšoao ho bohlokoa haholo bakeng sa ho ntlafatsa ts'epo ea litsamaiso tsa othomathike tsa indasteri, ho fokotsa sekhahla sa ho hloleha, ho sireletsa lisebelisoa tsa PLC, le ho ntlafatsa boleng ba matšoao. Ke e 'ngoe ea likarolo tsa bohlokoa ho netefatsa ts'ebetso e tsitsitseng le e tšepahalang ea litsamaiso tsa taolo.