Med det nye jordmodstand signalmodul, i jordet driftstilstand, tilbyder WAGO ikke kun detektering af 0°V-jording, men også fuldautomatisk detektering af modstandsværdier under en ikke-justerbar, ubalanceret isolations modstand mellem jord og +24°V eller 0°V af forsyningsspændingen.
WAGO jordmodstandssignalmodul
I videoen forklarer, Frank Sellke, WAGO Business Development Manager for INTERFACE ELECTRONICS, mere om de underliggende standarder, funktioner og fordele ved jordmodstands signalmodulet til brugere.
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Egenskaber
Udviklingen af jordmodstands signalmodulet
Enkelt fortrådning
Øjeblikkelig sikring udløses i tilfælde af jordfejl
Øjeblikkelig nedlukning af systemet
Ingen forvarsel
Afbrydelse af jordleder skilleklemme – manuel test af isolationsmodstand
Øjeblikkelig sikring udløses i tilfælde af jordfejl
Øjeblikkelig nedlukning af systemet
Detektering af potentielle jordfejl gennem rutinemæssig manuel vedligeholdelse
Jordmodstandssignal modulet tilbyder branchens bedste cost-benefit-forhold og er let at bruge. Udskiftning af den tidligere jordlederafbrydelsesklemme er ligetil. Der skal kun tilsluttes to ekstra ledninger til PLC'en for at gøre den potentialfri kontakt klar til evaluering.
Fordele ved jordmodstandssignalmodulet i forhold til den mekaniske jordlederafbrydelsesklemmeblok – i praksis
Manuel test for nye jordfejl erstattet af fuldautomatisk overvågning
Reduktion af inspektionsintervallet fra ca. 3 måneder til 10 sekunder
Øjeblikkelig yderligere signalering ved potentialfri kontakt for signalering til PLC
Eksempel på applikationer
Starts sted og resultat
Opgradering fra en jordlederskilleklemme til et jordmodstandssignalmodul
Uanset hvor en jordlederskilleklemme er i brug, kan et jordmodstands signalmodul nemt eftermonteres til fuldautomatisk overvågning.
To 24 VDC strømforsyninger kræver kunen jordmodstandssignalmodul
Selv med to eller flere strømforsyningsenheder forbundet parallelt, en jordmodstandssignalmodul tilstrækkelig til jordfejlsovervågning.