Ese RS485 na CAT6 ni bimwe?

Iki ni kimwe mu bintu bikunze kugaragara mu rujijo mu miterere ya sisitemu y'itumanaho mu nganda. Nubwo insinga zombi zohereza amakuru zikoresheje impande zombi, zakozwe mu buryo butandukanye, zikora ku bipimo bitandukanye bya impedance, kandi zikora ibintu bitandukanye cyane.

RS485 (ku mugaragaro TIA/EIA-485) ni igipimo ngenderwaho cy'urwego rw'umubiri ku itumanaho ryihuse mu nganda — inkingi ya Modbus RTU, Profibus, n'izindi sisitemu za fieldbus. CAT6 ni ibipimo ngenderwaho by'insinga ku miyoboro ya Ethernet — ishingiro rya LAN zo mu biro n'imiyoboro y'amakuru yihuta cyane.

Gusobanukirwa izi tandukaniro ni ingenzi mu kugaragaza insinga ikwiye ya sisitemu yawe y’imikorere y’inganda, kwirinda amakosa mu itumanaho, no gukumira amakosa ahenze mu ikoranabuhanga.

Mbere yo gusuzuma ibipimo bya cable, ni ngombwa gusobanukirwa iri tandukaniro ry'ibanze:

Imbonerahamwe ya 1: RS485 vs CAT6 — Ibipimo by'ingenzi

Impedansi idasanzwe ni cyo gipimo cy'ingenzi cyane cy'amashanyarazi gitandukanya insinga za RS485 na CAT6.

RS485 isaba 120Ω ± 10% insinga. Ibi bihuye na Ibirwanya guhagarika 120Ω ishyirwa ku mpera zombi za bisi. Iyo umugozi uhuza n'aho bisi ihagarara, itanga ikimenyetso cy'urugendo rudasubirwaho.

CAT6 isaba 100Ω ± 15% Umugozi. Ibi bihuye na transceivers za Ethernet zagenewe sisitemu ya 100Ω.

Imbonerahamwe ya 2: Ingaruka zo kudahuza kw'impedance

Ukuri k'Ubwubatsi: Insinga ya CAT6 ishobora kwihuza n'igikoresho cya RS485 hakoreshejwe adaptateri, ariko Ubudasa bw'impedansi ya 20Ω bizatera ibimenyetso bihindura amakuru, cyane cyane iyo ari kure cyangwa ku gipimo cy’uburemere bw’amazi. Niyo mpamvu ibikorwa bikomeye by’inganda bihora bigaragaza insinga ikwiye ya 120Ω RS485.

Itandukaniro ntarengwa ry'intera ni ryo rigaragara cyane hagati y'ubwo bwoko bw'insinga.

Imbonerahamwe ya 3: Igereranya ry'intera ugereranyije n'igipimo cy'amakuru

Impamvu RS485 ikomeza kure: Imikoreshereze ya RS485 ibimenyetso bitandukanye hamwe na igipimo gito cy'amakuru (ubusanzwe 9.6-115.2 kbps kuri Modbus RTU). Ingano nto ituma ikimenyetso kigenda intera ndende cyane mbere yuko igabanuka ry'umuvuduko rigira ikibazo.

Impamvu CAT6 ari ngufi: CAT6 ikora ku murongo uva kuri Kuva kuri 1 MHz kugeza kuri 250 MHz (kuri 1 Gbps). Frequencies nyinshi zigabanuka vuba cyane iyo intera ibaye, bigatuma kwiruka bigabanuka kugeza kuri metero 100.

Ingaruka Ifatika: Ku igorofa ry'uruganda rifite uburebure bwa metero 500 rifite ibikoresho bipima ibintu bikwirakwijwe mu kigo cyose, RS485 ni yo mahitamo yonyine ashoboka hakoreshejwe insinga z'umuringa. CAT6 yakenera imashini zihindura fibre optique cyangwa imashini zisubiramo buri metero 100, ibyo bikaba byongera cyane ikiguzi n'ubuhanga.

Ibidukikije by'inganda birimo urusaku rwinshi mu by'amashanyarazi. VFDs, moteri, n'insinga z'amashanyarazi bitanga EMI ishobora kwangiza ibimenyetso by'itumanaho. Ibisabwa ku burinzi bigaragaza iri tandukaniro.

Imbonerahamwe ya 4: Igereranya ry'uburinzi ku bikorwa by'inganda

Kuri Dingzun Cable, insinga zacu za RS485 zikora uburinzi bw'ibice byinshi — Igipfukisho cya aluminiyumu 100% hamwe n'umugozi w'umuringa wo mu gikombe hamwe n'umugozi ≥85% by'ubwishingizi — itanga ubushobozi bwo kurinda ibintu >90 dB mu itumanaho ryizewe ndetse no hafi ya VFD na moteri nini.

Ubushobozi hagati y’abayobora ni ikintu cy’ingenzi kigira ingaruka ku burebure ntarengwa bw’insinga n’ubwiza bw’ikimenyetso.

Imbonerahamwe ya 5: Igereranya ry'ubushobozi

Siyansi: Ubushobozi bwo gupima bukora nk'akayunguruzo gatuma urumuri runyura hasi. Ubushobozi bwo gupima buhanitse bugabanya ibice by'ikimenyetso bikoresha frequency nyinshi, bigazunguruka impande ziciritse bigatera amakosa ya biti ku ntera ndende. Niyo mpamvu insinga za RS485 zikoresha ubushyuhe bwa polyethylene (PE) (εᵣ = 2.3) aho kuba PVC (εᵣ = 3.5-4.5).

Imbonerahamwe ya 6: Imbonerahamwe y'ibijyanye n'ikoreshwa

Mu buryo bwa tekiniki: Yego, ariko hari imbogamizi zikomeye.

Insinga ya CAT6 ishobora gutwara ibimenyetso bya RS485 mu buryo bufatika. Byombi bikoresha impande zombi zigoranye. Byombi bishobora gukingirwa. Ariko:

Ibibazo:

Umwanzuro: CAT6 ishobora gukora kuri RS485 mu gihe gito cyane intera ngufi (Ariko ku itumanaho ryizewe mu nganda, cyane cyane mu ntera ndende cyangwa ahantu harangwa urusaku rw'amashanyarazi, buri gihe garagaza insinga ikwiye ya 120Ω RS485.

Kuri Dingzun Cable, Dukora insinga za RS485 by’umwihariko kuri izi porogaramu zikomeye — dufite impedance ya 120Ω ikwiye, insulation ya PE ifite ubushobozi buke, hamwe n’uburinzi bukomeye bw’ibice.

Mu gihe ugena insinga ya RS485 ku mushinga wawe, koresha uru rutonde rw'ibintu ugomba gusuzuma:

Imbonerahamwe ya 7: Ibisabwa ku bijyanye n'insinga za RS485

Ubushobozi bwacu bwa RS485 Cable:

Umuhango wacu mu bya tekiniki kugira ngo ugere ku ntsinzi yawe:

• Itsinda ry'inzobere mu by'ubwubatsi ku gishushanyo mbonera cy'umuyoboro wa RS485 wihariye kuri porogaramu
• Itumanaho ritaziguye kandi ry'umwuga uhereye ku bisobanuro kugeza ku gutanga
• Uburyo bwo guhindura ibintu mu buryo bukabije — umubare w'ababiri, igipimo cy'umuyoboro w'amashanyarazi, ubwoko bw'igikingira, ibikoresho by'ikoti, icapiro ryihariye
• Inyandiko yuzuye harimo raporo z'ibizamini, impamyabumenyi, n'uburyo bwo gukurikirana

Impamvu injeniyeri zihitamo Dingzun Cable kuri RS485:

Ukeneye itumanaho ryizewe rya RS485 ku muyoboro wawe w’inganda?
[Hagarara itsinda ryacu ry'abatekinisiye uyu munsi kugira ngo ubone inama cyangwa usabe icyitegererezo cyihariye]