3BSE018161R2控制模塊,PM864AK01-eA中文說明
鐵氧體的損耗最低但材料比鐵粉昂貴。鐵粉對過電流的耐受性也更高,比鐵氧體更能保持電感?!碍h(huán)形”或環(huán)形磁芯的磁場泄漏較小,但比鼓形或“線軸”磁芯更難纏繞和端接。在冶金行業(yè)中,典型的環(huán)保系統(tǒng)有脫硫、脫硝、除塵等系統(tǒng),通常情況下脫硫脫硝系統(tǒng)中也包含了除塵。煙氣脫硫系統(tǒng)是指除去煙氣中的硫分以及粉塵顆粒的過程,使得排放至大氣的尾氣符合國家標(biāo)準(zhǔn)。
3BSE018161R2控制模塊,PM864AK01-eA中文說明某大型鋼鐵集團(tuán)煙氣脫硫系統(tǒng)是一套處理燒結(jié)煙氣的工藝過程,菲尼克斯電氣提供了完整可靠的解決方案。脫硫系統(tǒng)控制連續(xù)性強(qiáng),對系統(tǒng)穩(wěn)定性要求較高,為此菲尼克斯電氣采用了基于PROFINET、集成雙鏈路冗余技術(shù)的控制器RFC 460R,即使同步光纖發(fā)生故障,也可以通過設(shè)備層的網(wǎng)絡(luò)保證數(shù)據(jù)同步,維持冗余狀態(tài)。RFC460R集成了AutoSync技術(shù),設(shè)備控制器無需設(shè)置即可自動(dòng)同步。該系統(tǒng)還使用菲尼克斯電氣TRIO系列冗余電源和防浪涌設(shè)備來保證供電安全,設(shè)備控制層網(wǎng)絡(luò)使用MRP冗余機(jī)制保證PROFINET網(wǎng)絡(luò)一旦發(fā)生故障能夠平滑切換至備用鏈路。得益于RFC 460R的一體化設(shè)計(jì),集成了兩個(gè)MAC地址的網(wǎng)口,上位監(jiān)控網(wǎng)和設(shè)備控制網(wǎng)可以有效分離,防止上下位網(wǎng)絡(luò)互相干擾。
網(wǎng)絡(luò)風(fēng)暴是工業(yè)生產(chǎn)中常見也是非常危險(xiǎn)一種網(wǎng)絡(luò)故障。此煙氣脫硫系統(tǒng)中使用的2000系列交換機(jī)支持鏈路聚合、RSTP、MRP及網(wǎng)絡(luò)風(fēng)暴抑制等功能可有效避免此類故障帶來的危害。同時(shí)將交換機(jī)以PROFINET設(shè)備的形式集成至控制器中實(shí)現(xiàn)了網(wǎng)絡(luò)可視化,監(jiān)控當(dāng)前的網(wǎng)絡(luò)的運(yùn)行狀態(tài),如環(huán)網(wǎng)狀態(tài)、端口狀態(tài)等。在I/O方面,系統(tǒng)采用快速、安全、高性能的AXIO系列產(chǎn)品。AXIO具有增強(qiáng)的抗干擾和抗振能力、寬溫的設(shè)計(jì)(-25 °C ... 60 °C)以及插拔式連接端子,能讓AXIO系列IO安全穩(wěn)定地運(yùn)行在各種惡劣的環(huán)境下。高達(dá)100MB速度的本地總線有效保障了系統(tǒng)的實(shí)時(shí)性。同時(shí),VISU+上位機(jī)軟件基于XML技術(shù),通過ODBC可自動(dòng)地將系統(tǒng)事件、用戶操作記錄以及歷史數(shù)據(jù)記錄到ACCESS、SQLSERVER或MYSQL等數(shù)據(jù)庫,數(shù)據(jù)庫由軟件自動(dòng)管理。通過內(nèi)嵌的報(bào)表軟件快速、簡單地從歷史數(shù)據(jù)庫創(chuàng)建報(bào)表,報(bào)表格式由用戶隨意定義。此外,高效、多線程的VBA腳本,支持WINDOWS API,幾乎無所不能。在該大型鋼鐵集團(tuán)的煙氣脫硫系統(tǒng)中,菲尼克斯電氣解決方案通過控制器冗余、數(shù)據(jù)同步冗余、網(wǎng)絡(luò)冗余及電源冗余保證了整套系統(tǒng)的可靠性和穩(wěn)定性;通過IO模塊診斷及網(wǎng)絡(luò)可視化診斷大大提高了系統(tǒng)的可追溯性和維護(hù)性;
Adjust the voltage adjustment knob to control the output DC voltage value. When working as a current stabilizing source to output current, turn the voltage adjusting knob clockwise to the end and keep it. Adjust the current adjustment knob to control the output DC current value. The power supply has voltage output and current output, but if the voltage is adjusted again, the voltage cannot be adjusted. Or the power supply has voltage output and current output. If you want to increase the current, the current will not be adjusted much.
This is because the operator is not very clear about the concepts of "constant pressure" and "constant current". If the "constant voltage" light is on, it means that the power supply is working in the constant voltage state (it can be considered that the voltage is in the active position). At this time, the output current is determined by the load, not by the operator (it can be said that the current is in the passive position). If you turn the "current regulation" knob to the right at this time, the current will not increase. But at this time, turn the "voltage regulation" knob to the right, the output voltage will rise, and the output current will also rise.