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تفاوت Dry Contact با NAMUR

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Sadeh

(@sadeh)

Reputable Member

عضو شده: 7 سال قبل

ارسال‌ها: 250

۱۴/۰۵/۱۴۰۲ ۸:۵۴ ب.ظ

سلام

یک آمپلی فایر سوئیچ ساخت Pepperl+Fuchs در مسیر یک سوئیچ دیجیتال قرار داره

در کاتالوگش که ضمیمه کردم دو حالت اتصال داره Dry Contact و NAMUR

ظاهراً در NAMUR امپدانس دوسر کنتاکنت قرار می گیره

کلاً کاربرد NAMUR کجاست؟

ممنون

Attachment: 214240_eng.pdf

نقل‌قول

amir omidi

(@amiromidi)

Trusted Member

عضو شده: 7 سال قبل

ارسال‌ها: 56

۰۱/۰۷/۱۴۰۲ ۹:۴۶ ق.ظ

درود بر شما

سنسورهای دیجیتال دو مدل معمولی و نامور دارند که در محیط های هازاردوس از مدل نامور باید استفاده کرد. چونکه نمیتونی 24 ولت مستقیم رو به محیط هازاردوس ببری زیرا ایجاد آرک یا جرقه و یا اتصال کوتاه ممکن است منجر به انفجار شود. برای همین بایستی سطح ولتاژ و جریان ارسالی به چنین محیط هایی کاهش یابد و ولتاژ حدود 8 ولت ارسال می شود. به مدل سنسوری که با این ولتاژ کار میکنه سنسور نامور میگویند. حالا اگه سنسور نامور استفاده کردی باید سمت Plc یا از کارت بریر استفاده کنی یا از کارت های دیجیتال input نامور که خود زیمنس ساخته.

اون امپدانسی که در کاتالوگ هست هم به صورت داخلی در سنسور نامور تعبیه شده است و نیاز نیست شما چیزی اضافه کنید.

در کل سنسورهای نامور مثل منبع جریان عمل می کنند و در حالت فعال یا غیر فعال بودن سنسور جریان متفاوتی از خود عبور می دهند و کارت بریر را هم میشه مثل یک میلی آمپرمتر تصور کرد که جریان دریافتی از سنسور نامور را اندازه می گیرد و سیگنال 24 ولت را به کارت PLC ارسال می کند. امیدوارم واضح توضیح داده باشم! 😉

موفق باشید.

Ahora1400، Parsa و Sadeh پسندیدند

پاسخنقل‌قول

Sadeh

(@sadeh)

Reputable Member

عضو شده: 7 سال قبل

ارسال‌ها: 250

۰۲/۰۷/۱۴۰۲ ۱:۰۴ ق.ظ

درود بر شما

بله خیلی واضح و مفید بود

@amiromidi

پاسخنقل‌قول

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آخرین ارسال: راه اندازی کلاینت جدیدترین عضو ما: saeid ارسال های اخیر Unread Posts Tags

Forum Icons: Forum contains no unread posts Forum contains unread posts

آیکن های موضوع: Not Replied پاسخ داده شده فعال داغ مهم تایید نشده حل شده خصوصی بسته شده

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