3BSE050091R65控制器,3BSE050091R65使用書
DCS系統(tǒng)接地
DCS系統(tǒng)接地按廠家要求執(zhí)行,避免接地問題造成系統(tǒng)大面積故障。應(yīng)注重考慮系統(tǒng)的抗干擾措施,I/O通道應(yīng)強(qiáng)調(diào)隔離措施。重視電纜質(zhì)量與屏蔽,重要信號(hào)及控制使用計(jì)算機(jī)專用通訊屏蔽電纜。3BSE050091R65
6、設(shè)備配置
根據(jù)設(shè)備運(yùn)行特點(diǎn)和各種工況下機(jī)組處理緊急故障的要求,配置操作員站和后備手操裝置。緊急停機(jī)停爐按鈕配置,應(yīng)采用與DCS分開的單獨(dú)操作回路。
7、保護(hù)系統(tǒng)
對(duì)于保護(hù)系統(tǒng),采用多重化信號(hào)攝取法。合理使用閉鎖條件,使信號(hào)回路具有邏輯判斷能力。
8、設(shè)備調(diào)試
調(diào)試期間按照調(diào)試大綱、辦法,對(duì)所有邏輯、回路、工況進(jìn)行測試,確保各參數(shù)設(shè)置正確合理。 臺(tái)塑企業(yè)自1954 年起,即投入PVC 相關(guān)過程的生產(chǎn),歷經(jīng)五十余年之努力,目前PVC粉年產(chǎn)能已達(dá)一佰三十五萬二仟公噸,不僅是臺(tái)灣最大生產(chǎn)廠商,若包含美國及大陸投資公司,則年產(chǎn)能可達(dá)二佰八十七萬公噸,是世界上最大的PVC粉生產(chǎn)廠商之一。 有鑒于大陸經(jīng)過十多年的經(jīng)濟(jì)改革開放后,其石化工業(yè)已快速發(fā)展,而且所需原料仍須大量仰賴進(jìn)口,在大陸加入WTO 后更將創(chuàng)造龐大商機(jī),惟受大陸高關(guān)稅保護(hù)措施影響,塑化原料要打入大陸內(nèi)銷市場相當(dāng)困難。為爭取大陸內(nèi)銷市場,臺(tái)塑企業(yè)積極進(jìn)行大陸布局,并于大陸寧波經(jīng)濟(jì)技術(shù)開發(fā)區(qū)規(guī)劃一石化專區(qū),且獲準(zhǔn)投資包括年產(chǎn)能30 萬公噸PVC 廠,本廠已于2005 年1 月完工生產(chǎn)。3BSE050091R65使用書
DCS系統(tǒng)規(guī)模 臺(tái)塑寧波PVC 廠的生產(chǎn)規(guī)模為年產(chǎn)能30 萬公噸。針對(duì)此生產(chǎn)規(guī)模,規(guī)劃之DCS系統(tǒng)提供過程控制盤26 盤 (含12 控制站) ,配電盤4 盤,繼電器盤21 盤,中繼盤15 盤,訊息庫站1 站,工程師站1 站,歷史訊息站1 站,SQL 訊息庫1 站,打印機(jī)2臺(tái),人機(jī)接口設(shè)備: 中控室操作站8 站,現(xiàn)場操作站3 站,遠(yuǎn)程操作站4 站,緊急操作盤3 盤,氣體偵測監(jiān)視站1 站。differential control should be used with caution, especially when you start the experiment, you should remove the differential control item to see if it works, hehe, no? Let's look elsewhere. It's sure to work. OK, these three parameters are clear. Let's talk about how to determine the values of these parameters. The more advanced way to determine these parameters is self-tuning, but if this part is involved at the beginning, don't talk about it first, and follow the empirical value. It is estimated that we use it to control the temperature more. Let's choose according to this law. KP = 100 / P, Ki = KP * t / I, Kd = KP * D / T respectively introduce the meaning of each parameter: T: calculation cycle, that is, how long it takes to calculate ⊿ U (n) = KP [e (n) - E (n-1)] + KIE (n) + KD [e (n) - 2e (n-1) + e (n-2)], the unit is seconds. Generally, 1 second or 0.5 seconds or even 5 seconds are OK. P: Proportional band I: integral time D: differential time p, I, D.