Taw qhia: Kev tsis sib haum xeeb ntawm Lub Hwj Chim thiab Logic
Ib qho kev nyab xeeb PLC, nrog nws cov khoom siv me me, tsis tshua muaj hluav taws xob digital outputs, yuav tsum tau hais kom tus contactor loj, siab tam sim no uas hloov ntau pua amps mus rau PTFE lub tsev txhab nyiaj. Qhov no yog qhov tsis sib xws hauv hluav taws xob saum ntuj ceeb tsheej- lossis ntuj txiag teb tsaus. Kev sib txuas ncaj qha ntawm ob yuav yog ib daim ntawv qhia rau lub suab nrov, kev puas tsuaj, thiab kev ua haujlwm tsis zoo. Tus txo hwj chim interposing relay zaum nruab nrab ntawm lawv, ib tug ruaj khov, electro-mechanical choj uas txhais ib tug ntxhi rau hauv lub qw.
Nkag siab txog Kev Sib Tw Hluav Taws Xob Hluav Taws Xob
Kev nyab xeeb PLC tso zis feem ntau yog lub zog qis, 24-volt DC transistor teeb liab, muaj peev xwm hloov tau tsuas yog ob peb puas milliamps. Lub ntsiab heater contactor coil, ntawm qhov tod tes, yuav tsum muaj lub zog 120V lossis 230V AC inrush tam sim no rub rau hauv thiab kaw. Ibinterposing relay PTFE rhaub kev nyab xeeb Circuit Courtdaws qhov kev tsis sib haum xeeb no.
Yuav ua li cas Interposing Relay Functions raws li tus neeg saib xyuas lub rooj vag
Lub interposing relay yog ib qho me me, feem ntau ice-cube-loj, relay nrog lub tshuab hluav taws xob qis uas tau yooj yim tsav los ntawm PLC. Nws cov kev sib cuag muaj zog thiab ntsuas kom huv si hloov qhov loj, inductive load ntawm tus contactor's coil. Qhov no muab kev sib cais hluav taws xob zoo tshaj plaws ntawm tus tswj kev nyab xeeb thiab lub zog hloov khoom siv, tiv thaiv PLC cov zis tawm los ntawm qhov hluav taws xob thiab rov qab-EMF. Lub teeb liab kev nyab xeeb yog li ntseeg tau thiab ua kom huv si. Lub interposing relay yog tus trusty, me me gatekeeper, noj cov lus txib maj mam los ntawm lub computer lub hlwb thiab siv nws mus pov ib tug haib, hnyav hloov.
Technical Requirements rau ib qho kev ntseeg siab Interposing Relay xaiv
Rau interposing relay ua nws txoj haujlwm kev nyab xeeb kom raug, ob txoj cai tsim nyog yuav tsum tau ua raws li:
Tiv tauj ntsuas thiab Inrush tam sim no
Lub interposing relay tus neeg yuav tsum tau ntsuas rau tag nrho cov kauj tam sim no thiab voltage ntawm tus contactor, nrog rau nws inrush tam sim no. AC contactor coils kos ob peb zaug lawv tuav tam sim no thaum pib rub-hauv theem. Ib qho kev sib txuas lus qis qis yuav txuas kaw lossis ua kom tawg ntxov, ua rau muaj kev nyab xeeb.
Kev Tiv Thaiv ntawm Inductive Kickback
Ib qho kev tiv thaiv diode (rau DC contactor coils) lossis hlau-oxide varistor (MOV, rau AC contactor coils) feem ntau muab tso ncaj qha hla lub contactor coil. Cov khoom no absorbs lub high-voltage spike generated thaum lub contactor coil yog de-energized, yog li tiv thaiv interposing relay tus neeg los ntawm arc puas thiab prolonging nws lub neej ua hauj lwm.
Xaus: Tus Saib Xyuas Tus Nqi qis ntawm Txoj Kev Nyab Xeeb
Lub interposing relay yog qhov tseem ceeb, tsis tshua muaj nqi interface uas tiv thaiv kev nyab xeeb kev nyab xeeb los ntawm lub ntiaj teb ntxhib-thiab-tumble ntawm kev hloov hluav taws xob siab, kom ntseeg tau tias kev nyab xeeb ua haujlwm raug rau xyoo. Qhov kev ntseeg siab tshaj plaws PTFE lub tshuab cua sov kev nyab xeeb yog tsim los nrog kev ua tib zoo saib xyuas txhua qhov txuas hauv cov saw hlau tswj- los ntawm PLC cov zis mus rau qhov sib cuam tshuam relay, thiab los ntawm relay mus rau contactor coil. Kev tshem tawm cov khoom me me no yuav ua rau muaj kev puas tsuaj loj; suav nrog nws hloov qhov tsis sib haum xeeb rau hauv tus qauv ntawm kev muaj zog, cais tawm, thiab tsim kev ntseeg siab.
