Shigar da masu raba sigina a kan kabad ɗin sarrafa PLC

A fannin sarrafa kansa na masana'antu, kabad ɗin sarrafawa na PLC (Programmable Logic Controller) suna taka muhimmiyar rawa, suna da alhakin karɓar sigina daga firikwensin da masu kunna sauti daban-daban, da kuma cimma daidaitaccen iko na tsarin samarwa ta hanyar ayyukan dabaru na ciki. Duk da haka, a aikace-aikace, kabad ɗin sarrafawa na PLC galibi suna fuskantar yanayi daban-daban masu rikitarwa na lantarki da matsalolin tsangwama na sigina, wanda zai iya haifar da gazawar tsarin sarrafawa, gazawa akai-akai, har ma da barazana ga amincin kayan aiki da ma'aikata. Saboda haka, ƙara da cewa siginar da aka warena'urorin sarrafawa zuwa kabad na PLC sun zama mafita gama gari.

Manyan ayyukan masu raba sigina sun haɗa da hana watsa tsangwama ta hanyar lantarki, rage faruwar gazawar tsarin, da kuma samar da keɓewa idan kayan aiki suka lalace a wurin, hana yaɗuwar kurakurai zuwa ga tsarin sarrafawa gaba ɗaya. Ta hanyar daidaita da canza siginar da PLC ta karɓa ta hanyar na'urorin semiconductor, sannan a ware su da kuma mayar da su ta amfani da na'urorin gano haske ko maganadisu, sannan a ƙarshe a rage su da mayar da su zuwa ga siginar asali ko sigina daban-daban, wannan tsari yana tabbatar da daidaito da daidaiton siginar, yayin da kuma hana lalacewar PLC da rage tasirin siginar da ke wurin akan PLC, musamman siginar tarkace. Bugu da ƙari, masu raba sigina kuma za su iya cimma canjin sigina, kamar canza sigina daga haɗin PT10 zuwa siginar 4-20mA da shigar da su cikin tsarin PLC, a guji rikice-rikice tsakanin hanyoyin wutar lantarki da wutar lantarki da kuma magance matsalar tsangwama tsakanin madaukai da kayan aiki.

A cikin takamaiman aikace-aikace, kamar a cikin layin samarwa na masana'antar ƙarfe, ana samun aunawa da sarrafawa ta hanyar PLC, kayan aikin sarrafa kansa na kan wurin, da masu kunna wutar lantarki a wurin. Ana sanya PLC a cikin kabad ɗin sarrafawa wanda ke da nisan mita ɗaruruwa daga wurin (yana aiki a zafin ɗaki), da kayan aikin sarrafa kansa ko thermocouples daga siginar fitarwa ta wurin ta hanyar wayoyi zuwa kabad ɗin sarrafawa a cikin ɗakin sarrafawa. A wannan lokacin, dole ne a ware siginar da ke shiga PLC kuma yana iya buƙatar a canza shi, kamar ware 4-20mA da canza shi zuwa 0-5V kafin shiga PLC. Kayan aikin da ke kammala keɓewa da canza siginar thermocouple ana kiransa "mai raba siginar thermocouple" ko "mai watsa zafin jiki na thermocouple". Babban aikinsa ya haɗa da ware siginar shigarwa da siginar fitarwa, da kuma canza siginar matakin mV na shigarwa daga thermocouple zuwa siginar masana'antu na yau da kullun (4-20mA, 0-5V, 0-10V).

A taƙaice, shigar da na'urorin raba sigina yana da matuƙar muhimmanci wajen inganta ingancin tsarin sarrafa kansa na masana'antu, rage yawan lalacewa, kare kayan aikin PLC, da kuma inganta ingancin sigina. Yana ɗaya daga cikin muhimman abubuwan da ke tabbatar da ingantaccen aiki na tsarin sarrafawa.