Yokogawa NFDR541-P50, shuningdek NFDR541 rele chiqish moduli sifatida katalogga kiritilgan bo‘lib, CENTUM VP va ProSafe‑RS boshqaruv tizimlarida raqamli ijro uchun mo‘ljallangan maxsus apparat komponentidir.
Apparat texnik xususiyatlari
Parametr
Texnik xususiyat
Model
NFDR541-P50
Brend
Yokogawa
Kelib chiqishi
Yaponiya
Og‘irligi
0,3 kg
O‘lchamlar
Yokogawa I/O modulining standart korpus o‘lchami
Ishlash harorati
Boshqaruv xonasi uchun belgilangan termik diapazon
Quvvat sarfi
Ko‘rsatilmagan
Kanallar
16 ta mustaqil rele chiqishi
Kontakt turi
Form A / SPST-NO quruq kontaktlar
Nominal kuchlanish
24–125 VDC; 100–240 VAC (50/60 Hz)
Maksimal yuklama toki
24 VDC yoki 100–220 VAC da 2,0 A/kanal
Umumiy shina konfiguratsiyasi
Har 8 kanal uchun umumiy shina (har bir umumiy shina uchun maksimal 8 A)
Izolyatsiya
Tashqi qurilmalar va tizim o‘rtasida 2000 VAC bardoshlilik kuchlanishi
Mahsulot turi
Rele chiqish moduli
4–20 mA HART kontur protokoli va kanaldan kanalga izolyatsiya
NFDR seriyasidagi rele modullari analog konturlarni bevosita qayta ishlamasa-da, Yokogawa’ning DCS apparat dizaynida HART va Fieldbus quyi tizimlarida qo‘llaniladigan bir xil izolyatsiya tamoyillari tatbiq etilgan. Har bir rele kanali mexanik jihatdan izolyatsiyalangan bo‘lib, induktiv yoki sig‘imli yuklamalarni kommutatsiyalashda kanallararo xalaqitlarning oldini oladi. Har 8 kanal uchun umumiy shina simplex va zaxiralangan arxitekturalarda barqaror kommutatsiyalash xatti-harakatini ta’minlaydigan deterministik izolyatsiya qoidalari asosida ishlab chiqilgan.
Ko‘p beriladigan savollar
Savol: NFDR541‑P50 qurilmasini quvvatni uzmasdan almashtirish mumkinmi? Javob: Yo‘q, rele chiqish modullari faqat I/O segmenti quvvatsizlantirilganda o‘rnatilishi yoki chiqarilishi kerak.
Savol: Har bir umumiy shina uchun qo‘llab-quvvatlanadigan maksimal tok qancha? Javob: Har bir umumiy shina 8 ta rele kanaliga taqsimlangan holda jami 8 A gacha tokni qo‘llab-quvvatlaydi.
Savol: Tashqi qurilmalar va tizim zanjirlari o‘rtasida izolyatsiya qanday ta’minlanadi? Javob: Modul tashqi qurilmalar va tizim o‘rtasida 2000 VAC izolyatsiyani ta’minlaydi, bu mantiqiy va tashqi zanjirlar o‘rtasida xavfsiz ajratishni kafolatlaydi.
Joyida o‘rnatish bo‘yicha yo‘riqnoma
Impedans orqali o‘zaro ta’sirni oldini olish uchun rele chiqishi simlarini analog konturlardan alohida yo‘naltiring.
Induksiyalangan shovqinni kamaytirish uchun raqamli chiqish simlaridagi ekran uzluksizligini saqlang.
Vibratsiya sababli bo‘shashishning oldini olish uchun klemma qisqichlari o‘tkazgichlarni to‘liq mahkamlaganiga ishonch hosil qiling.
Quvvat berishdan oldin qo‘zg‘atish, qaytish va yuklama o‘tkazgichlarining to‘g‘ri ulanganini tasdiqlang.
O‘rnatishdan oldin rele moduli konnektorlarida ifloslanish yoki mexanik yeyilish bor-yo‘qligini tekshiring.
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