? 產(chǎn)品基本信息P0916CP FCM10EF FCM10Ef現(xiàn)場總線通信模塊
FCM10Ef模塊與多端口光纖轉(zhuǎn)換器(集線器)一起使用，通過高速，可選冗余的10 Mbps以太網(wǎng)中繼現(xiàn)場總線連接到I/A系列控制站。
多達六組基板安裝的FCM10Ef模塊和fbm可以連接到每個可選的冗余多端口光纖轉(zhuǎn)換器(集線器)，每個I/ a系列控制站最多120個fbm(取決于選定的掃描周期)。為了支持冗余，每個FBM組必須使用一對FCM10Ef模塊。在非冗余配置中，每個組只需要一個FCM10Ef。
FCM10Ef模塊和多端口光纖轉(zhuǎn)換器(集線器)之間的信號傳輸距離可達2公里(1.24英里)，為FBM設(shè)備組的廣泛分布提供了條件。
在分組內(nèi)以及在多端口光纖轉(zhuǎn)換器(集線器)和I/A系列控制站之間，也可以使用光纖電纜延長傳輸距離。(詳見PSS 21H-2W1 B3)
不受電氣噪聲(EMI, RFI和閃電)的影響，光纖電纜提供了一種通用的，高度可靠的擴展信號通信的手段?？捎糜谟行D(zhuǎn)機械、弧焊機等區(qū)域，也可安裝在有高壓電源線的電纜橋架內(nèi)，或安裝在有雷擊危險的室外區(qū)域。它的電氣隔離特性提供了對電壓差和接地回路的保護。
本配置中使用的光纖布線由用戶自行購買。推薦使用芯徑為62.5微米、包層厚度為125微米、數(shù)值孔徑為0.275 NA的多模梯度折射率玻璃光纖。
在波長1300nm時，允許信號損耗為1db / km，在波長850nm時，允許信號損耗為3.6 dB / km。不允許使用不同特性的電纜。需要四根光纖電纜作為冗余，兩根用于傳輸，兩根用于接收連接。因此，建議客戶購買雙工布線，即兩根光纖纏繞在一根電纜中。電纜端接必須采用st型連接器，電纜長度不得超過模塊規(guī)定的長度。
FCM10E
? 立即聯(lián)系何經(jīng)理
The FCM10Ef Fieldbus Communications Module is a fiber optic communications interface which allows the DIN rail mounted Fieldbus Modules (FBMs) to communicate with the I/A Series control station over extended distances using fiber optic cabling. The FCM10Ef modules provide expanded networking, easy customization, and greater overall cabling distances in a fiber optic network (see Figure 1). This configuration is ideally suited for sites in which groups of FBMs are to be spread apart over greater distances.
FCM10Ef modules are used with multiport fiber optic converters (hubs), which connect to the I/A Series control station via the high-speed, optionally redundant 10 Mbps Ethernet trunk Fieldbus.
Up to six groupings of baseplate-mounted FCM10Ef modules and FBMs can be linked to each optionally redundant multiport fiber optic converter (hub), for a maximum of 120 FBMs per I/A Series control station (depending on selected scan periods). To support redundancy, a pair of FCM10Ef modules must be used for each FBM grouping. In non-redundant configurations, only a single FCM10Ef is required for each grouping.
Signal transmission distances up to 2 km (1.24 mi) are possible between the FCM10Ef modules and the multi-port fiber optic converters (hubs), providing for wide distribution of the FBM equipment groupings.
Extended transmission distances, using fiber optic cabling, are also possible within the groupings, and between the multiport fiber optic converter (hub) and the I/A Series control station. (Refer to PSS 21H-2W1 B3, for details.)
Unaffected by electrical noise (EMI, RFI, and lightning), fiber optic cabling provides a versatile, highly reliable means of extending signal communications. It can be used in areas containing rotating machinery, arc welders, and so forth, and can be installed in cable trays containing high voltage power lines, or in outdoor areas exposed to lightning hazards. Its electrical isolation characteristics provide protection from voltage differentials and ground loops.
Fiber optic cabling used in this configuration is purchased by the customer. The recommended fiber optic cable is a multimode, graded-index glass fiber with a 62.5 micron core and 125 micron cladding with 0.275 NA (numerical aperture).
Maximum allowable signal loss is 1 dB per km at a wavelength of 1300 nm, and 3.6 dB per km at a wavelength of 850 nm. Cables with different characteristics may not be used. Four fiber optic cables are required for redundancy, two for transmit and two for receive connections. For this reason, it is recommended that the customer purchase duplex cabling, which consists of two fibers intertwined in a single cable. The cables must be terminated with ST-type connectors and cable length may not exceed that specified for the module.
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