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Re: 4-20mA @230Vac


"Gashtapano"  je napisao u poruci interesnoj  
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Re: 4-20mA @230Vac

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Re: 4-20mA @230Vac


"Gashtapano"  je napisao u poruci interesnoj  
grupi:o2b86a$1ror$ snipped-for-privacy@lvpnews.vipnet.hr...


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Re: 4-20mA @230Vac






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namjere...


Re: 4-20mA @230Vac


"Mat"  je napisao u poruci interesnoj grupi:o2cn2j$nqr$ snipped-for-privacy@l01news1.ot.hr...







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namjere...

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Zapovjedaj svojoj materi koja te tako odgojila.  


Re: 4-20mA @230Vac

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Ostavi se moje matere, majmune neotesani!


uvrijedio.





jednom mjerenju.




u toj domeni...

Re: 4-20mA @230Vac


"Mat"  je napisao u poruci interesnoj grupi:o2e2ft$2vj$ snipped-for-privacy@l01news1.ot.hr...


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Ostavi se moje matere, majmune neotesani!


uvrijedio.





jednom mjerenju.




u toj domeni...
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I ti nastavljas eskalaciju.

Otrest ce te visoki napon na svakoj zici signalnog
kabela, zasvijetlit ce cak i neonka.


kletva ostvarila.


Re: 4-20mA @230Vac
ja,...).
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sasvim precizno za industrijsku namjenu.







Re: 4-20mA @230Vac

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Standardno koristim regulirani izvor 24Vdc. Ta ovu duljinu kabela to je  


neoklopljenim kabelima, bez obzira na duljinu kabela. Uvijek koristim  


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Re: 4-20mA @230Vac


"Mat"  je napisao u poruci interesnoj grupi:o26d7h$4f1$ snipped-for-privacy@l01news1.ot.hr...


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Standardno koristim regulirani izvor 24Vdc. Ta ovu duljinu kabela to je


neoklopljenim kabelima, bez obzira na duljinu kabela. Uvijek koristim


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Povuci novi kabel za 230v, to je tvoj nivo.


Re: 4-20mA @230Vac


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230V, signalni kabel, strujna petlja.....
O cemu vi to tupite? :-)

--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac


"Vaso"  je napisao u poruci interesnoj grupi:o2bh0q$or4$ snipped-for-privacy@sunce.iskon.hr...



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230V, signalni kabel, strujna petlja.....
O cemu vi to tupite? :-)

--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
We've slightly trimmed the long signature. Click to see the full one.
Re: 4-20mA @230Vac


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Eeee...U istom 'snopu' kabela?

--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac


"Vaso"  je napisao u poruci interesnoj grupi:o2cm51$p4q$ snipped-for-privacy@sunce.iskon.hr...



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Eeee...U istom 'snopu' kabela?

--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac

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A teoretski,
ne postoje gotova rjesenja za sve moguce potrebe?

--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac


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Za normalne stvari postoje, vodjenje 220V i nizeg napona istim kabelom nije  
normalno, zapravo zabranjeno je (kapacitivna struja je kod tih duzina tolika  
da cak i sklopnici stoje ukljuceni).  



Re: 4-20mA @230Vac
On 12/11/2016 04:53 PM, megamusic wrote:

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Ovdje se radi o vodjenju 230V i NIZE STRUJE!?


--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac

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Na struju tj samo mjerenje nece puno utjecati pod uvjetom da jedna strana  
kruga (senzor) pliva ali ce vjerojatno spalit ulaz na PLC-u ili ce se PLC  
poceti cudno ponasati.




Re: 4-20mA @230Vac
On 12/12/2016 05:14 AM, megamusic wrote:
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?? Ne uvodis struju petlje u PLC!
Kod PLC-a radis konverziju struje u napon i s tim ulijeces na ulaz PLC-a?
I naravno, osiguras min. i max.napona, barem diodama prema masi i  
napajanju.....


--  
Branko Vasiljev:
Vise se NIkada Nitko NECE Na Softveru
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Re: 4-20mA @230Vac

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Kod nekih PLC-a ta konverzija je interna tj imaju current loop input.
U svakom slucaju pojavit ce se tu visoki napon koji moze utjecat na sami PLC  
(ulazi su najcesce 0 -10V) ili ostale senzore.
Kombinacija sa diodama bi vjerojatno zastitila ulaz u PLC ali je moguce da  
bi znacajno utjecala na napon napajanja PLC-a (struja curenja kod te duzine  
kabela moze biti prilicna, pogotovo za vise harmonike) i opet izazvala  
probleme, a u dosta slucejeva kontrolni krugovi uopce nisu uzemljeni.  



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