描述
3.1PLC控制的軟件設(shè)計(jì)
PLC控制軟件的設(shè)計(jì)大致可以分為以下幾個(gè)模塊:上電初始化、檢測(cè)、自動(dòng)磨削、報(bào)警及報(bào)替處理。選用永宏的FBS系列PLC,其內(nèi)部包含基本邏輯指令、步進(jìn)順控指令和功能指令,配合擴(kuò)展模塊的特殊指令,編程靈活、修改方便且運(yùn)行穩(wěn)定。首先進(jìn)行初始化,初始化包括拖板、刀盤進(jìn)給絲杠和伺服的歸零,一上電伺服控制刀盤的軸快速移動(dòng)到零點(diǎn)位置,相應(yīng)的伺服讀數(shù)為零,拖板也根據(jù)需要回到零點(diǎn)位置,若刀盤主軸進(jìn)給超過(guò)最大給定行程時(shí),系統(tǒng)發(fā)出超程報(bào)警,同時(shí)刀盤主軸自動(dòng)返回零位。比較麻煩的是不知道要切削幾次才可以達(dá)到磨削的期望值,為了提高效率,用戶可以將常用的磨削周期存儲(chǔ)起來(lái)以備后用,而不必重新設(shè)計(jì)磨削周期。
2)DA模塊:版輥旋轉(zhuǎn),刀盤旋轉(zhuǎn),拖板移動(dòng)分別用3臺(tái)電動(dòng)機(jī)拖動(dòng),變頻器根據(jù)輸入的版輥直徑,版輥長(zhǎng)度通過(guò)調(diào)用公式來(lái)調(diào)節(jié)電動(dòng)機(jī)轉(zhuǎn)速,保證磨削出一定錐度的表面。三個(gè)速度和版輥直徑,長(zhǎng)度之間存在著一定的機(jī)械關(guān)系,而這種折算關(guān)系存儲(chǔ)在PLC中并在磨削前自動(dòng)調(diào)用出來(lái),拖板的橫向移動(dòng)距離用接近開(kāi)關(guān)檢測(cè),電機(jī)每轉(zhuǎn)一周檢測(cè)5個(gè)開(kāi)關(guān)(絲杠前進(jìn)10mm),計(jì)5次數(shù),一次計(jì)數(shù)就移動(dòng)2mm,停止時(shí)已記下一定的距離,當(dāng)拖板退回去的時(shí)候可以根據(jù)折算好的計(jì)數(shù)值自動(dòng)停止移動(dòng)。無(wú)論刀盤轉(zhuǎn)速還是版輥轉(zhuǎn)速、拖板移動(dòng)速度發(fā)生波動(dòng),都會(huì)影響磨削出來(lái)的表面精度,因此,當(dāng)其中一個(gè)速度發(fā)生波動(dòng)時(shí),另外兩個(gè)的轉(zhuǎn)速必須迅速跟蹤。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利,英維思,伍德沃德,福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
Motorola MVME162-012A MVME162-12A 10
Motorola MVME162-013 MVME162-13 9
Motorola MVME162-013A MVME162-13A 1
Motorola MVME162-013A MVME162-13A 3
Motorola MVME162-020 MVME162-20 8
Motorola MVME162-020A MVME162-02A 4
Motorola MVME162-021 MVME162-21 1
Motorola MVME162-022 MVME162-22 7
Motorola MVME162-023 MVME162-23 6
Motorola MVME162-023A MVME162-23A 5
Motorola MVME162-031 MVME162-31 1
Motorola MVME162-032 MVME162-32 43
Motorola MVME162-033 MVME162-33 4
Motorola MVME162-040 MVME162-40 18
Motorola MVME162-042 MVME162-42 3
Motorola MVME162-211 1
Motorola MVME162-212 210
Motorola MVME162-213 1
Motorola MVME162-215 3
Motorola MVME162-222 100
Motorola MVME162-223 2
Motorola MVME162-253 17
Motorola MVME162-260 2
Motorola MVME162-262 1
Motorola MVME162-263 7
Motorola MVME162-270 5
Motorola MVME162-283 2
Motorola MVME162-410 12
Motorola MVME162-412 1
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Motorola MVME162-420 8
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Motorola MVME162P-242E 0
Motorola MVME162P-242L 1
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Motorola MVME162PA-244L 1
Motorola MVME162PA-244LE 1
Motorola MVME162PA-244LSE 1
Motorola MVME162PA-344 0
Motorola MVME165 1
Motorola MVME165-01 MVME165-010 2
Motorola MVME166-11A MVME166-011A 36
Motorola MVME166-12A MVME166-012A 28
Motorola MVME166-13A MVME166-013A 33
Motorola MVME166-14A MVME166-014A 30
Motorola MVME167 5
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