M'mafakitale, pakhoza kukhala zovuta zambiri, ndipo kuyika koyenera ndi njira zamawaya ndizofunikira kuti zitsimikizire chitetezo pakupanga.Kupyolera mu phunziro lamasiku ano, tifufuza pamodzi momwe tingatsimikizire chitetezo pakupanga mafakitale.
1. Kufotokozera Vutoli
Makasitomala omaliza anali kugwiritsa ntchito 485 kulumikizana module CT-5321 polumikizana ndi ma frequency inverter.Anakumana ndi vuto lomwe makhadi asanu ndi limodzi olumikizirana ma frequency inverter adawotchedwa motsatizana.Pambuyo posintha makadi a inverter kasanu ndi kamodzi (nthawi iliyonse yomwe imayambitsa kupsa mtima), gawo lolumikizana la CT-5321 lokha linawotcha pamwambo wachisanu ndi chimodzi.
Pofuna kupewa kutayika kwina kwamakasitomala, mainjiniya a ODOT adayendera tsambalo kuti athandizire kuthetsa mavuto.
2. Kuthetsa Mavuto Patsamba
Pambuyo poyang'anitsitsa ndikuwunika ndi mainjiniya pamalopo, zinthu zotsatirazi zidadziwika:
(1) Pali makabati owongolera 14 pamalopo, iliyonse ili ndi ma inverter awiri pafupipafupi ndi mita imodzi yamphamvu yomwe imayenera kulumikizana ndi CT5321.
(2) GND ya ma frequency inverter imalumikizidwa ndi chingwe chotchinga cha mzere wa chizindikiro.
(3) Poyang'ana mawaya a frequency inverter, adapeza kuti malo olumikizirana ndi inverter sanalekanitsidwe.
(4) Waya wotetezedwa wa mzere wa siginecha wa RS485 sulumikizidwa pansi.
(5) The RS485 communication terminal resistors silumikizidwa.
3. Kusanthula Chifukwa
Kutengera kuwunika ndi kusanthula kwazomwe zikuchitika pamalopo, mainjiniya adapereka zidziwitso zotsatirazi:
(1) Zigawo zowonongeka ndi ma modules sizinawonetse zizindikiro zowonongeka za electrostatic discharge (ESD) kapena opaleshoni.Mosiyana ndi ESD kapena kuwonongeka kwa maopaleshoni, komwe nthawi zambiri sikumayambitsa zida zowotchedwa, zida zowotchedwa mu CT-5321 zinali zogwirizana ndi chipangizo chachitetezo cha doko la RS485.Chipangizochi nthawi zambiri chimakhala ndi magetsi owonongeka a DC pafupifupi 12V.Chifukwa chake, zidadziwika kuti voteji pa basi ya RS485 idapitilira 12V, mwina chifukwa choyambitsa magetsi a 24V.
(2) Basi ya RS-485 inali ndi zida zamphamvu zingapo komanso mita yamagetsi.Popanda kudzipatula koyenera komanso kuyika pansi, zida izi zitha kupanga kusiyana kwakukulu komwe kungatheke.Kusiyana kumeneku ndi mphamvu zikachuluka, ndizotheka kupanga chipika pamzere wa siginecha wa RS485, zomwe zimabweretsa kuwonongeka kwa zida zomwe zili pamzerewu.
4. Yankho
Poyankha izi zapatsamba, mainjiniya a ODOT adapereka mayankho awa:
(1) Chotsani chingwe chotchinga chotchinga kuchokera ku inverter GND ndikuchilumikiza padera ndi malo opangira ma siginecha.
(2) Gwirizanitsani zida za inverter, patulani malo azizindikiro, ndikuwonetsetsa kuti pali malo oyenera.
(3) Onjezani ma terminal resistors a kulumikizana kwa RS485.
(4) Ikani zotchinga zodzipatula za RS-485 pazida zomwe zili pabasi ya RS-485.
5. Chithunzi chowongolera
Kukhazikitsidwa kwa njira zowongolera zomwe zili pamwambazi zitha kupewetsanso zovuta zofananira kuti zisachitikenso, kuwonetsetsa zokonda ndi chitetezo cha makasitomala.
Panthawi imodzimodziyo, ODOT imakumbutsanso makasitomala kuti aziganiziranso nkhani zofanana pakupanga ndi kukonza njira zoyankhulirana, kulimbikitsa kukonza zipangizo ndi kasamalidwe, ndikuonetsetsa kuti dongosololi likhale lokhazikika komanso lodalirika.
Nthawi yotumiza: Feb-01-2024
