CVC750AE101系統(tǒng)控制模塊
說明如何更換需要維修的模塊。支持服務(wù)提供有關(guān)從當(dāng)?shù)谽lsag Bailey銷售辦事處訂購零件的信息。它還解釋了Elsag Bailey提供的其他支持領(lǐng)域。附錄A顯示了NTAI05模擬輸入終端單元的雙列直插式設(shè)置、終端接線和所需布線。附錄B顯示了雙列直插式開關(guān)設(shè)置、NIAI04模擬輸入終端模塊的端子接線和所需的布線。附錄C顯示了NTFB01現(xiàn)場總線終端裝置的跳線設(shè)置、終端接線和所需布線。如何使用本說明在操作FEC模塊之前閱讀本說明。如需更多信息，請參閱此列表中的章節(jié)。1.將FEC模塊投入運(yùn)行前，請閱讀第4節(jié)。2.執(zhí)行第3.3節(jié)中的步驟。如果出現(xiàn)問題，請參閱第5節(jié)中的操作。4.有關(guān)維護(hù)FEC模塊所需的計(jì)劃步驟，請參閱第6節(jié)。5.關(guān)于如何更換模塊，請參閱第7節(jié)。6.使用第8節(jié)了解零件訂購信息。本節(jié)還介紹了Elsag Bailey提供的其他服務(wù)。術(shù)語和縮寫表表1-1包含Elsag Bailey獨(dú)有的術(shù)語和縮寫，或具有不同于標(biāo)準(zhǔn)行業(yè)用法的定義。
描述和操作
本節(jié)介紹IMFEC1模擬輸入模塊（FEC）的操作。該模塊執(zhí)行兩項(xiàng)主要任務(wù)。通過該接口，控制模塊（多功能處理器或多功能控制器模塊（MFP/MFC））可以從外部設(shè)備或智能變送器輸入模擬過程數(shù)據(jù)。它還充當(dāng)INFI 90 OPEN控制系統(tǒng)和現(xiàn)場設(shè)備之間的通信鏈路。IMFEC12模塊接受來自傳統(tǒng)變送器（BC、EQ和PT）的輸入以及4至20毫安、1至5 VDC、0至1 VDC、0到5 VDC、10至10 VDC和-10至+10 VDC的標(biāo)準(zhǔn)模擬輸入。IMFEC11具有IMFEC12模塊的所有功能，但也為Bailey Fischer&Porter智能變送器和其他智能設(shè)備的接口提供FSK通信。一般操作從控制模塊（MFP/MFC）接收初始化后，F(xiàn)EC模塊將該信息存儲(chǔ)在存儲(chǔ)器中，并檢查每個(gè)輸入通道的配置。如果所有輸入通道檢查正常，則操作開始。如果FEC模塊檢測到配置錯(cuò)誤，則該錯(cuò)誤會(huì)出現(xiàn)在模塊狀態(tài)報(bào)告中。在正常操作下，控制模塊發(fā)送發(fā)射器命令，并從FEC模塊請求過程輸入數(shù)據(jù)和狀態(tài)信息。FEC模塊連續(xù)讀取每個(gè)輸入通道，進(jìn)行必要的轉(zhuǎn)換并將數(shù)據(jù)存儲(chǔ)在存儲(chǔ)器中。當(dāng)控制模塊請求數(shù)據(jù)時(shí)，F(xiàn)EC模塊向其發(fā)送存儲(chǔ)器中的最新信息。如果其中一個(gè)發(fā)射器發(fā)生通信故障，F(xiàn)EC模塊將在繼續(xù)正常操作的同時(shí)恢復(fù)通信。它在恢復(fù)變送器通信后檢查變送器配置，并繼續(xù)正常過程控制。
Explains how to replace a module needing repair.
Support Services Provides information about ordering parts from your local Elsag Bailey sales office. It also explains other areas of support that Elsag Bailey provides. Appendix A Shows the dipshunt settings, terminal wiring for the NTAI05 analog input termination unit and the required cabling. Appendix B Shows the dipswitch settings, terminal wiring for the NIAI04 analog input termination module and the required cabling. Appendix C Shows the jumper settings, terminal wiring for the NTFB01 field bus termination unit and the required cabling. HOW TO USE THIS INSTRUCTION Read this instruction before placing the FEC module in operation. Refer to the sections in this list as needed for more information. 1. Read Section 4 before placing the FEC module in operation. 2. Do the steps in Section 3. 3. Refer to Section 5 for what to do if a problem occurs. 4. Refer to Section 6 for the scheduled steps needed to maintain the FEC module. 5. Refer to Section 7 for how to replace a module. 6. Use Section 8 for parts ordering information. This section also tells of additional services that Elsag Bailey offers. GLOSSARY OF TERMS AND ABBREVIATIONS Table 1-1 contains those terms and abbreviations that are unique to Elsag Bailey or have a definition that is different from standard industry usage.
DESCRIPTION AND OPERATION
This section explains the operation of the IMFEC1 Analog Input Module (FEC). The module does two major tasks. It provides an interface by which the controlling module (multifunction processor or multifunction controller module (MFP/MFC)) can input analog process data from external devices or smart transmitters. It also serves as a communication link between the INFI 90 OPEN control system and field devices. The IMFEC12 module accepts inputs from conventional transmitters (BC, EQ and PT) and standard analog inputs of 4 to 20 milliamps, 1 to 5 VDC, 0 to 1 VDC, 0 to 5 VDC, 0 to 10 VDC and -10 to +10 VDC. The IMFEC11 has all the functionality of the IMFEC12 module but also provides FSK communications for interface to Bailey-Fischer & Porter smart transmitters and other smart devices. GENERAL OPERATION Upon receiving initialization from the controlling module (MFP/MFC), the FEC module stores that information in memory and checks the configuration of each input channel. If all input channels check good, operation begins. If the FEC module detects a configuration error, that error appears in the module status report. Under normal operation, the controlling module sends transmitter commands and requests process input data and status information from the FEC module. The FEC module continuously reads each input channel, does the necessary conversions and stores the data in memory. When the controlling module makes a request for data, the FEC module sends it the most current information that it has in memory. If a communication failure with one of the transmitters occurs, the FEC module works to restore communication while continuing normal operation. It checks the transmitter configuration upon restoring transmitter communication and normal process control continues.
