Kwimeko yoshishino, kunokubakho inkitha yemiba enokubakho, kwaye ukufakela okuchanekileyo kunye neendlela zocingo zibalulekile ekuqinisekiseni ukhuseleko kwimveliso.Ngomzekelo wanamhlanje, siza kuphonononga kunye indlela yokuqinisekisa ukhuseleko kwimveliso yemizi-mveliso.
1. Inkcazo yeNgxaki
Umthengi we-terminal ebesebenzisa imodyuli yonxibelelwano engama-485 i-CT-5321 kunxibelelwano ne-frequency inverter.Baye badibana nemeko apho amakhadi amathandathu onxibelelwano kwi-frequency inverter atsha ngokulandelelana.Emva kokutshintsha amakhadi e-inverter amaxesha amathandathu (ixesha ngalinye elibangela ukutshiswa), imodyuli yonxibelelwano ye-CT-5321 ngokwayo yatshisa ngexesha lesithandathu.
Ukuthintela ilahleko eyongezelelekileyo yabathengi, iinjineli zeODOT zandwendwela indawo ukuze zincede ekuxazululeni iingxaki.
2. Ukusombulula ingxaki kwisiza
Emva kokuphononongwa ngononophelo kunye nohlalutyo lweenjineli kwindawo, le miba ilandelayo ichongiwe:
(1) Kukho iikhabhinethi zokulawula ezili-14 kwisiza, nganye iqulethe ii-inverters ezimbini ze-frequency kunye nemitha yamandla enye efuna ukunxibelelana ne-CT5321.
(2) I-GND ye-frequency inverter iqhagamshelwe kwindawo ekhuselayo yomgca wesignali.
(3) Emva kokuvavanya i-wiring ye-frequency inverter, kwafunyaniswa ukuba umhlaba wonxibelelwano kunye nomhlaba we-inverter awuzange uhlukaniswe.
(4) Ucingo olukhuselekileyo lomgca wesignali we-RS485 aluqhagamshelwanga emhlabeni.
(5) I-RS485 i-terminal resistors yonxibelelwano ayidityaniswanga.
3. Uhlalutyo lwesizathu
Ngokusekwe kuqwalaselo kunye nohlalutyo lwemeko yesiza, injineli ibonelele ngezi nkcukacha zilandelayo:
(1) Izixhobo ezonakalisiweyo kunye neemodyuli azizange zibonise iimpawu zomonakalo oqhelekileyo wokukhupha i-electrostatic discharge (ESD) okanye utyando.Ngokungafaniyo ne-ESD okanye umonakalo wotyando, odla ngokungaphumeleli kumacandelo atshisiweyo, amacandelo atshisiweyo kwi-CT-5321 ayenxulumene nesixhobo sokukhusela i-electrostatic port ye-RS485.Esi sixhobo sikholisa ukuba nombane wokuqhekeka we-DC ojikeleze i-12V.Ngoko ke, kwafunyaniswa ukuba i-voltage kwibhasi ye-RS485 idlule i-12V, mhlawumbi ngenxa yokwaziswa kombane we-24V.
(2) Ibhasi yeRS-485 inezixhobo ezininzi zamandla aphezulu kunye neemitha zamandla.Ukungabikho kokwahlulwa okufanelekileyo kunye nokubekwa phantsi komhlaba, ezi zixhobo zinokudala umahluko omkhulu onokwenzeka.Xa lo mahluko unokwenzeka kunye namandla amakhulu, kunokwenzeka ukwenza i-loop kumgca we-RS485 wesignali, ekhokelela ekutshatyalalisweni kwezixhobo kule loop.
4. Isisombululo
Ukuphendula le miba yakwisiza, iinjineli zeODOT zicebise ngezisombululo zilandelayo:
(1) Nciphisa umaleko wokukhusela umqondiso kwi-inverter GND kwaye uyidibanise ngokwahlukileyo kumhlaba wesignali.
(2) Gcoba izixhobo ze-inverter, uhlukanise umhlaba wesignali, kwaye uqinisekise umgangatho ofanelekileyo.
(3) Yongeza i-terminal resistors kunxibelelwano lwe-RS485.
(4) Faka i-RS-485 izithintelo zokuzihlukanisa kwizixhobo ezikwibhasi ye-RS-485.
5. Umzobo wokulungisa
Ukuphunyezwa kwala manyathelo okulungisa angentla kunokuthintela ngokufanelekileyo iingxaki ezifanayo ukuba zenzeke kwakhona, ukuqinisekisa umdla kunye nokhuseleko lwabathengi.
Ngelo xesha, i-ODOT iphinda ikhumbuze abathengi ukuba banikele ingqalelo kwimiba efanayo ekuyilweni nasekugcinweni kweenkqubo zonxibelelwano, ukuqinisa ukugcinwa kwezixhobo kunye nokulawula, kunye nokuqinisekisa ukuzinza nokuthembeka kwenkqubo.
Ixesha lokuposa: Feb-01-2024
