Thaum hluav taws kub tshwm sim, muaj ntau cov roj lom thiab muaj kev phom sij ntawm cov khoom siv sib txuas ntawm lub cev, nws yog qhov ua rau muaj tswb thiab ua rau lub tswb ntsuas sijhawm.}}} Li casRoj NtesUa haujlwm nrog cov tua hluav taws tua hluav taws?
Thaum txuas cov roj tsau ruaj ruaj nrog 4-20 ma}}}}}}}}}}}}}}}}}}}}}}}}}}} pager
1.}} Paub meej tias cov roj av ruaj ruaj nrog kev tswj vaj huam sib luag enterface
- KhoRoj Ntes:
{{0- 4-20 m tso zis: siv rau cov tsom xam thiab hloov khoom siv roj txuas nrog.
- Dhau Relay: qhuav hu (tsis muaj voltage), feem ntau yog siv rau lub tswb ntsuas (xws li cov tswb nrov siab thiab qis}
- Vaj Huam Sib Luag Hluav Taws Kub Hluav Taws Xob:
- Tshawb xyuas seb puas muaj cov tswv yim analog cov tswv yim (tau txais}} ma cov cim tseg (tau txais Relay qhuav cov paib).
{{02. Txuas 4-20 ma kos npe (analog) los ntawm tsau EX PASTOR NTES
- Kab hlau txoj kev:
- Txuas tus ncej zoo (+) ntawm cov ntes tus4-20 ma tso zis rau tus ncej hluav taws xob (+) ntawm lub tshav hluav taws kub analog cov tswv yim.
- Txuas qhov 4-20 ma mession Ncej (-) ntawm lub ntsuas tsis zoo (-) ntawm analog cov tswv yim ntawm lub vaj huam sib luag {}}
- Nco ntsoov tias cov tswv yim analog ntawm cov maub los txhawb4-20 ma tam sim no yog qhov deb ntawm ib qho kom tsis txhob cuam tshuam.
3. Yuav ua li cas txuas passive passs (hloov kom muaj nuj nqis) ntawm cov ntsuas roj?
- Relay Pab: Feem ntau siv rau cov roj ntau tshaj lub tswb (xws li kaw thaum mus txog 50% ntawm qhov qis tawg txwv).
- Kab hlau txoj kev:
- Txuas lub com (nquag kawg) thiab tsis muaj (feem ntau qhib qhov taw tes) ntawm rauv cov tswv yim davhlau ya nyob twg ntawm lub chaw tua hluav taws (xws li "Lub tswv yim ceeb toom").
- Lub vaj huam sib luag hluav taws yuav tsum tau muab 24V fais fab muab (xws li cov tswv yim nquag) lossis tau txais cov lus qhia qhuav (passive tswv yim):
- Lub tswv yim nquag: Lub Vaj Huam Sib Luag muab 24V tau tsim thaum cov relay kaw los ua rau lub tswb ceeb toom rau hauv.
- passive kev tawm tswv yim: txuas ncaj qha rau qhov kev sib cuag qhuav, thiab cov vaj huam sib tham tau pom ntawm thiab tawm .
- Piv txwv li xaim:
Ntes Relay com → Vaj Huam Sib Luag Tswb Cov Lus Qhia Caij Tsheb 1
NTES REEFAY TSIS MUAJ → TXWV NYIAM Tswb cov lus tshaj tawm hnub nyoog 2 (lossis 24V +, raws li vaj huam sib luag)
4.} Yuav ua li cas teeb tsa lub tswb tua hluav taws?
- Analog channel:
- Teeb cov ntau yam (xws li 0-100} lel), sib xws rau 4mA {%, 20MA {% {}.
- nws yuav tsim nyog los teeb tsa lub tswb ntsuas (xws li 25% lel tsawg lub tswb, 50% Lel siab tswb).
- Hloov channel:
- Teeb tsa ib txwm qhib (tsis muaj) txhais, thiab qhib lub tswb thaum xa tawm raug kaw .
- Txhais lub tswb ceeb toom (xws li "roj av kub ceev") .
{{0 {} Xeem} Xeem thiab Tshawb Xyuas
1. Simulate Roj Tswb:
- Siv cov calibrator kom cov tswv yim rau cov tswv yim ib4-20 ma teeb liab thiab tshawb xyuas seb puas yog lub vaj huam sib luag zaub muaj nqis phim.
- Ua rau cov relay (xws li luv luv tsis thiab com) kom paub meej tias cov Vaj Huam Sib Luag Tswb Zog.
2.} On-site Test:
- PASS cov roj txheem kom paub tseeb qhov txuas lub tswb muaj nuj nqi .
Sau ntawv
- tawg-pov thawj cov cai: Yog tias nyob rau hauv ib qho chaw txaus ntshai yuav tsum tau siv, thiab peb cov ntawv pov thawj kev nyab xeeb, ATEX ntawv pov thawj {}}
- Kev tiv thaiv hauv paus av: Zam kev cuam tshuam ntawm kev cuam tshuam ntawm daim thaiv teeb meem thiab cov txheej txheem tiv thaiv txheej tau cog rau ntawm ib lub ntsiab lus .
- Relay Load: Paub meej tias lub peev xwm rov qab muaj peev xwm (xws li 5A / 24V) sib phim cov vaj huam sib luag cov kev xav tau {}}
Los ntawm cov kauj ruam saum toj no, Lel Gas Ntes thiab lub tswb hluav taws kub tau ntseeg tau txuas li .
Yog tias koj xav tau Lel Gas Ntes lossis Ex Gas Tus Ntes Pls tiv tauj peblucy@huafankj.com