Kubikka zintu zikwabilila zitondezyo kumabbokesi aa PLC

Mumulimo wakuchita zintu zilikke, PLC (Programmable Logic Controller) zibelesyo zyeendelezya zibeleka mulimo mupati, zijisi mukuli wakutambula zitondezyo kuzwa kuli zibelesyo ziindene-indene, akujana kweendelezya kabotu-kabotu nzila yakupanga zintu kwiinda mukubelesya nzila zyamukati. Nokuba boobo, mumilimo iibeleka, makkabbineti aa PLC kanjikanji alaswaangana abukkale bwamagesi bukatazya alimwi amapenzi aakunyonganya zitondezyo, calo cikonzya kupa kuti nzila zyakweendelezya zitabeleki kabotu, zitabeleki kabotu ziindi zinji, alimwi mane zilakonzya kuleta ntenda kuzibelesyo ababelesi. Aboobo, kuyungizya chitondezyo chili alikkeators ku PLC control cabinets kwaba nzila iibelesyegwa lyoonse.

Milimu mipati yazikwabilizyo zyamagesi ibikkilizya kulesya kunjililwa kwamagesi, kuchesya kuchitika kwakulezya kwaminchina, akupa kukwabililwa kuti naa zibelesyo zyatyoka aabusena, kulesya kumwaika kwatumpenda kunzila yoonse yeendelezya. Kwiinda mukucinca akusandula zitondezyo zitambulwa a PLC kwiinda muzibelesyo zya semiconductor, mpawo akuzigwisya akuzisandula kubelesya zibelesyo zyakuzyiba zintu ziboneka naa zyamagineti, kumamanino akuzisandula akuzipilusya kuzitondezyo zyakusaanguna naa zitondezyo ziindene, eeyi nzila ilasinizya kuti zitondezyo zitazungaani akululama, kumwi kazilesya kunyonyooka kwa PLC akucesya ntenda zyazitondezyo ku PLC, ikapati zitondezyo zyakuvwundauka. Mukuyungizya, zibelesyo zikwabilila zitondezyo zilakonzya kuchincha zitondezyo, mbuli kusandula zitondezyo kuzwa ku PT10 kuba zitondezyo zya 4-20mA akuzibikka muma PLC systems, kuchitila kuti kutabi mazwanga aakati kamagesi aamagesi mpawo akumanizya penzi lyakunyongana aakati kama loops azibelesyo.

Mumilimo imwi, mbuli mumulongo wakupanga zintu zyabutale, kupima akweendelezya kuchitwa kwiinda mu PLC, zibelesyo zibeleka aabusena, antoomwe azibelesyo zibeleka aabusena. I PLC ibikkwa mubbokesi lyakweendelezya lilaa mamita aali myaanda kuzwa kubusena (ibelekela atempelecha), mpawo zibelesyo zibeleka zyokwazyo naakuti thermocouples kuzwa kubusena zilagwisya zitondezyo kwiinda mumawaya kuya mubbokesi lyakweendelezya muŋanda yakulanganya. Aawa, chitondezyo chinjila mu PLC cheelede kwaandaanizyigwa mpawo chilakonzya kuyandika kusandulwa, mbuli kwaandaanya 4-20mA akuchisandula kuba 0-5V kaitananjila mu PLC. Zibelesyo zimanizya kwaandaanya akusandula zitondezyo zya thermocouple zyiitwa kuti "thermocouple signal isolator" naakuti "thermocouple temperature transmitter". Mulimu wayo mupati ubikkilizya kwaandaanya citondezyo chakunjizya acitondezyo chakuzwa, antoomwe akusandula citondezyo cha mV kuzwa ku thermocouple kuya kuzitondezyo zyamakkampani (4-20mA, 0-5V, 0-10V).

Muchi chifwiifwi, kubikka zibelesyo zikwabilila zitondezyo nchintu chipati mukusumpula kusyomeka kwanzila zyamakkampani, kuchesya ntenda, kukwabilila zibelesyo zya PLC, akusumpula bubotu bwazitondezyo. Nchimwi chazintu ziyandikana loko mukusinizya kuti nzila zyakweendelezya kazibeleka kabotu akusyomeka