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1、<p> 本科畢業(yè)設(shè)計(jì)(論文)外文翻譯譯文</p><p> 學(xué)生姓名: 劉 飛 </p><p> 院 (系): 電子工程學(xué)院 </p><p> 專業(yè)班級(jí): 電氣0802 </p><p> 指導(dǎo)教師:
2、 李 明 </p><p> 完成日期: 2012 年 4 月 20日 </p><p> 三菱Q用戶手冊(cè)安全守則</p><p> 當(dāng)使用三菱設(shè)備時(shí),請(qǐng)仔細(xì)閱讀本手冊(cè)和本手冊(cè)中提及的其他相關(guān)手冊(cè),對(duì)安全問題予以充分重視,進(jìn)行正確的操作。</p><p> 在本安全守則中安全注意
3、事項(xiàng)按等級(jí)分為兩類:“!危險(xiǎn)”和“!警告”。</p><p> ??!危險(xiǎn)表明,不正確的處理可能會(huì)導(dǎo)致在危險(xiǎn)的條件下,造成嚴(yán)重傷害或死亡。</p><p> ?。【姹砻?,不正確的處理可能會(huì)導(dǎo)致在危險(xiǎn)的條件下,造成中度或輕微人身傷害或人身?yè)p害。</p><p> [設(shè)計(jì)上的注意事項(xiàng)]</p><p><b> !危險(xiǎn) <
4、;/b></p><p> . 即使外部電源或PLC的模塊有問題也應(yīng)該安裝一個(gè)安全的外部電路的PLC,以便讓整個(gè)系統(tǒng)安全。否則,可能會(huì)造成麻煩,錯(cuò)誤的輸出或錯(cuò)誤的操作。</p><p> ?。?) 外部的PLC,建設(shè)機(jī)械損傷防止聯(lián)鎖電路如緊急停止,保護(hù)電路,定位上限和下限交換機(jī)和聯(lián)鎖前進(jìn)/后退操作。 (2) 輸出可留待或關(guān)閉時(shí),有麻煩的產(chǎn)出模塊繼電器或晶體管。因此,建立
5、一個(gè)外部監(jiān)測(cè)電路,將監(jiān)測(cè)任何單一輸出,可能導(dǎo)致嚴(yán)重的麻煩。</p><p> . 當(dāng)過流超過了一定的等級(jí)或因短路負(fù)載流量輸出模塊的時(shí)間很長(zhǎng),可能會(huì)造成煙霧或火警。為防止這種情況,設(shè)定一個(gè)外部安全電路,如保險(xiǎn)絲。</p><p> . 建立一個(gè)電路,打開外部電源時(shí),PLC的主要模塊電源是打開的。如果外接電源是開啟的,首先,它可能會(huì)導(dǎo)致錯(cuò)誤的輸出或錯(cuò)誤的行動(dòng)。</p><
6、;p> . 當(dāng)連接外圍設(shè)備的CPU模塊或連接個(gè)人電腦或類似的智能功能模塊行使控制(數(shù)據(jù)的變化)對(duì)PLC的運(yùn)行時(shí),配置了一個(gè)聯(lián)鎖電路的順序計(jì)劃,以確保整個(gè)系統(tǒng)將一直安全運(yùn)行。還收到行使其他控制(程序的變化,運(yùn)行狀態(tài)的變化(狀態(tài)控制))對(duì)PLC的運(yùn)行,仔細(xì)閱讀手冊(cè),并充分確認(rèn)安全。特別是對(duì)上述控制PLC的遙控器上的一個(gè)外部設(shè)備,PLC的故障原因是數(shù)據(jù)通信故障,所以立即行動(dòng)可能不會(huì)被采取的。除了配置了聯(lián)鎖電路中的序列程序,糾正措施及
7、其他應(yīng)采取的行動(dòng),作為一個(gè)系統(tǒng)所發(fā)生故障數(shù)據(jù)通信應(yīng)預(yù)定在外部設(shè)備和PLC的CPU 之間。</p><p> . 當(dāng)有通信問題,數(shù)據(jù)鏈接,請(qǐng)參閱相應(yīng)的數(shù)據(jù)鏈接手冊(cè)運(yùn)行狀態(tài)的各個(gè)部分。如果不這樣做,可能會(huì)導(dǎo)致錯(cuò)誤的輸出或錯(cuò)誤的行動(dòng)。</p><p><b> [安裝注意事項(xiàng)]</b></p><p><b> ??!警告 </b
8、></p><p> . 不要把一大堆的控制線路或通信電纜與主回路或電源線捆在一起或把它們安裝的彼此很接近。他們之間的安裝距離應(yīng)在100毫米或以上。如果不這樣做,可能會(huì)導(dǎo)致噪音繼而導(dǎo)致錯(cuò)誤的操作。</p><p> . 當(dāng)安裝延長(zhǎng)電纜,可確保連接器的基本單元是安裝正確。安裝完畢后,檢查他們的松動(dòng)。連接不牢固可能會(huì)導(dǎo)致輸入或輸出的失敗。</p><p>
9、. 安全加載到內(nèi)存卡存儲(chǔ)卡中并載入連接器。載入后,請(qǐng)檢查是否取消。取消可能會(huì)由于接觸故障而導(dǎo)致故障。</p><p> . 在下載或卸載模塊之前完全關(guān)閉外部電源。不這樣做可能會(huì)導(dǎo)致觸電或損壞產(chǎn)品。請(qǐng)注意,當(dāng)QnPHCPU使用時(shí)在線模式會(huì)變化。請(qǐng)注意,有限制的模塊,可以改變?cè)诰€和每個(gè)模塊已預(yù)定的變化過程。擰緊螺絲在指定的扭矩范圍。不牢固可能導(dǎo)致,短路或故障。過緊也可能導(dǎo)致,短路或故障造成螺釘或模塊的損害。<
10、/p><p><b> [接線注意事項(xiàng)]</b></p><p><b> !危險(xiǎn)</b></p><p> . 完全關(guān)閉外部電源時(shí),安裝或放置布線。不完全關(guān)閉所有的電源可能會(huì)導(dǎo)致觸電或損壞的產(chǎn)品。</p><p> . 當(dāng)打開電源或操作系統(tǒng)安裝后的模塊或布線工作時(shí),將確保模塊的終端覆蓋正確連接
11、。不重視終端覆蓋可能會(huì)導(dǎo)致觸電。</p><p><b> !警告 </b></p><p> . 當(dāng)線路中的PLC ,確保它是正確的,檢查產(chǎn)品的額定電壓和終端布局。連接電源不同的等級(jí)或不正確布線產(chǎn)品可能導(dǎo)致火災(zāi)或損壞。</p><p> . 加強(qiáng)終端螺絲與指定扭矩。如果終端機(jī)螺絲的松動(dòng),它可以造成短路、火災(zāi)、錯(cuò)誤操作。緊固螺絲終端太
12、遠(yuǎn)可能造成螺絲釘和模塊的損害,造成的后果是短路或故障。</p><p> . 該模塊有一個(gè)入口預(yù)防標(biāo)簽的頂端,以防止雜質(zhì),如導(dǎo)線的斜邊,進(jìn)入該模塊布線。布線時(shí)不剝此標(biāo)簽。 在開始之前的系統(tǒng)操作時(shí),一定要?jiǎng)冸x這個(gè)標(biāo)簽,因?yàn)橐帷?lt;/p><p> [啟動(dòng)和維護(hù)注意事項(xiàng)]</p><p><b> !危險(xiǎn)</b></p>&l
13、t;p> . 進(jìn)行網(wǎng)上業(yè)務(wù)的CPU模塊操作,連接周邊設(shè)備(尤其是,當(dāng)發(fā)生變化的數(shù)據(jù)或操作狀態(tài)) ,應(yīng)在手冊(cè)中仔細(xì)閱讀并有足夠的安全檢查下進(jìn)行。 操作失誤可能會(huì)造成損害或有問題的模塊。</p><p><b> . 正確連接電池。</b></p><p> 此外,不充電、分解、熱、發(fā)生火災(zāi)、短路、或焊接電池。處理不當(dāng)會(huì)導(dǎo)致電池過熱或裂紋,可能造成傷害和火災(zāi)。
14、</p><p> . 不要拆開或修改模塊。 這樣做可能會(huì)造成麻煩,錯(cuò)誤的行動(dòng),傷害,或火災(zāi)。</p><p> . 在交換機(jī)各個(gè)階段的外部電源關(guān)閉或刪除之前安裝模塊。如果不關(guān)掉外接電源,它會(huì)導(dǎo)致故障或失靈的模塊。</p><p><b> [處置注意事項(xiàng)]</b></p><p><b> !警告
15、 </b></p><p> . 當(dāng)處理該產(chǎn)品,把它作為工業(yè)廢物。</p><p> [開關(guān)運(yùn)行在程序運(yùn)行之后]</p><p><b> 重點(diǎn)</b></p><p> ?。?) 當(dāng)CPU模塊是在停止?fàn)顟B(tài)時(shí),即使運(yùn)行/停止開關(guān)設(shè)置在立即運(yùn)行程序之后,CPU模塊也將不會(huì)進(jìn)入運(yùn)行狀態(tài)。當(dāng)CPU模塊利
16、用重置/L的切換和程序已經(jīng)寫入時(shí)使用CLR 運(yùn)行/停止開關(guān)設(shè)置運(yùn)行重置時(shí),CPU模塊可帶進(jìn)運(yùn)行狀態(tài)。 (2) 如果CPU模塊是理想帶進(jìn)運(yùn)行狀況而且沒有重置,操作運(yùn)行/停止開關(guān)從停止到運(yùn)行,從運(yùn)行到停止,從停止到運(yùn)行遵守該命令。幾秒后停止到運(yùn)行開關(guān)操作,CPU模塊進(jìn)入運(yùn)行狀態(tài)。</p><p> (3) CPU模塊開機(jī)運(yùn)行,當(dāng)程序?qū)懭霑r(shí),程序在運(yùn)行期間被寫入程序存儲(chǔ)器。當(dāng)CPU模塊正在運(yùn)行時(shí),一個(gè)程序
17、已經(jīng)寫入之后,寫入的程序也將儲(chǔ)存到原來(lái)的開機(jī)內(nèi)存中。不寫程序進(jìn)入開機(jī)內(nèi)存時(shí)將運(yùn)行下次啟動(dòng)的舊程序。</p><p> 該用戶的手冊(cè)描述的是進(jìn)程的CPU的硬件規(guī)格和處理方法。該手冊(cè)還介紹了這些項(xiàng)目涉及到的電源供應(yīng)模塊的詳細(xì)說(shuō)明,主要的是基本單元,推廣基本單元,延長(zhǎng)線,記憶卡和電池。該進(jìn)程的CPU是一個(gè)控制兼容CPU模塊的過程。 基于高性能模式QCPU,CPU的過程有以下額外的操作指示和功能。 ?過程控制
18、指令:52指示 ?自動(dòng)調(diào)諧功能 ?在線模塊變化 ?MELSECNET /小時(shí)多重遠(yuǎn)程I / O系統(tǒng)兼容性</p><p> 進(jìn)程的CPU有以下新特點(diǎn): </p><p> ?。?) 52操作指令增加過程控制指令 </p><p> 52額外的指示能夠高級(jí)別過程控制。(2) 2自由度PID控制系統(tǒng) </p><p&
19、gt; 2自由度PID控制系統(tǒng)可以通過優(yōu)化針對(duì)這兩個(gè)設(shè)定值的變化和干擾變化。</p><p> ?。?) 添加自動(dòng)調(diào)諧功能(初始值的PID常數(shù)設(shè)置) </p><p> 自動(dòng)調(diào)諧功能自動(dòng)化控制參數(shù)的調(diào)整,縮短調(diào)整,節(jié)省了勞動(dòng)力的經(jīng)營(yíng)者和控制工程師,并解決不同的個(gè)別差異之間的調(diào)整。</p><p> ?。?) 模塊可以在線改變(在線模塊更改)</p>
20、;<p> 當(dāng)一個(gè)模塊出現(xiàn)故障時(shí),可以通過不停止系統(tǒng)運(yùn)轉(zhuǎn)改變它。在線模塊改變適用于功能版本C和更新的Q系列I/O模塊和A / D轉(zhuǎn)換轉(zhuǎn)換器,D/A轉(zhuǎn)換器,熱電偶輸入和溫度控制模塊。</p><p> ?。?)多路遠(yuǎn)程I/O系統(tǒng)MELSECNET /小時(shí)可通過安裝在遠(yuǎn)程主站MELSECNET/h配置,你可以配置多重的MELSECNET/小時(shí)的遠(yuǎn)程I/O系統(tǒng)。</p><p>
21、 ?。?) 兼容性與過程控制專用軟件包</p><p> 使用PX的開發(fā)是允許PID控制方案的,以創(chuàng)造簡(jiǎn)單的功能塊。結(jié)合過程控制軟件包(PX開發(fā))提供良好的工程環(huán)境。</p><p> 在這個(gè)過程中的CPU ,一個(gè)所需的編寫/閱讀程序或監(jiān)測(cè)時(shí)間通過高速通信的速度已減少,最大的通信速度達(dá)115.2kbps。通過RS-232接口,通信時(shí)間效率上時(shí)間的調(diào)試已經(jīng)增加。</p>
22、<p> 在這個(gè)過程中的CPU,12Mbps的高速通訊速度是允許通過USB的。</p><p><b> [荷載與安裝]</b></p><p><b> 預(yù)防措施的布線</b></p><p><b> !危險(xiǎn) </b></p><p> . 完全關(guān)閉外
23、接電源或安裝時(shí)放置布線。沒有完全關(guān)閉所有的電源可能會(huì)導(dǎo)致觸電或損壞產(chǎn)品。</p><p> . 當(dāng)打開電源或操作模塊后安裝或布線工作,確保該模塊的終端封面正確連接。不重視終端覆蓋可能導(dǎo)致觸電。</p><p><b> !警告 </b></p><p> . 當(dāng)線路中的PLC ,確保它是正確的并檢查該產(chǎn)品的額定電壓和終端布局。連接電
24、源供應(yīng)器是不同的等級(jí)或不正確的接線產(chǎn)品可能導(dǎo)致火災(zāi)或損壞。</p><p><b> 疑難解答</b></p><p> 當(dāng)一個(gè)模塊出現(xiàn)故障,你可以改變它不停車系統(tǒng)。 在線模塊改變適用于Q系列I/O模塊和A/D轉(zhuǎn)換轉(zhuǎn)換器,D/A轉(zhuǎn)換器,熱電偶輸入和溫度控制模塊功能版本C和更新。</p><p> 為了提高系統(tǒng)的可靠性,不僅要有高度可靠的設(shè)
25、備,而且還迅速啟動(dòng)系統(tǒng)發(fā)生后的麻煩成為一個(gè)重要的因素。迅速地啟動(dòng)該系統(tǒng),造成的麻煩必須處理正確。</p><p> 基本三點(diǎn)必須遵循的故障排除如下:</p><p> ?。?) 視覺檢測(cè)視力檢查以下:</p><p> 1) 按次序的運(yùn)動(dòng)(停止條件,工作條件) 2) 電源開/關(guān)3) 狀態(tài)的輸入/輸出設(shè)備4) 電源模塊,CPU模塊,I/O模塊,智
26、能功能模塊,安裝條件的延長(zhǎng)線5) 狀態(tài)的接線(I/O電纜,電纜) 6) 顯示狀態(tài)的各類指標(biāo)(“權(quán)力”的LED,“運(yùn)行”的LED,“出錯(cuò)”發(fā)光二極管的I/O發(fā)光二極管)</p><p> 7) 狀態(tài)設(shè)置的各類設(shè)置開關(guān)(設(shè)置號(hào)的階段擴(kuò)展基本單元,電源中斷保持現(xiàn)狀)在確認(rèn)項(xiàng)目1)至第7條),連接GX的開發(fā),并檢查操作條件的PLC和內(nèi)容的程序。</p><p> (2) 檢查問題
27、請(qǐng)檢查如何操作條件的不同,而可編程控制器PLC的是操作如下。 1) 設(shè)置運(yùn)行/停止開關(guān)停止。 2) 重啟的問題或麻煩重置/L.CLR開關(guān)。 3) 打開和關(guān)閉電源。 </p><p> ?。?) 減少面積估計(jì)困擾部分按照項(xiàng)目(1)和(2)段。 1) PLC或外部設(shè)備 2) I/O模塊或其他</p><p><b> 3)
28、序列計(jì)劃</b></p><p> 在CPU模塊返回一個(gè)錯(cuò)誤代碼的一般數(shù)據(jù)處理要求原始地點(diǎn)發(fā)生錯(cuò)誤時(shí),并有一個(gè)總的數(shù)據(jù)處理請(qǐng)求的形式外圍設(shè)備,智能功能模塊,或網(wǎng)絡(luò)系統(tǒng)。如果出現(xiàn)錯(cuò)誤,當(dāng)是一個(gè)普通的數(shù)據(jù)處理時(shí),要求有外圍設(shè)備,智能功能模塊,以及網(wǎng)絡(luò)系統(tǒng)。</p><p><b> [電源模塊]</b></p><p><b&
29、gt; 重點(diǎn)</b></p><p><b> 1 過電流保護(hù)</b></p><p> DC5V、DC24V電路中一旦電流超過規(guī)格以上過電流保護(hù)裝置就切斷電路系統(tǒng)停止運(yùn)行電源模塊的LED 在電壓低時(shí)燈滅或者微亮。如本裝置發(fā)生作用則關(guān)閉輸入電源在排除了電流容量不足短路等原因后,經(jīng)幾分鐘后再打開電源啟動(dòng)系統(tǒng)。電流值一旦恢復(fù)正常系統(tǒng)即啟動(dòng)初始化。<
30、;/p><p><b> 2 過電壓保護(hù)</b></p><p> DC5V的電路中一旦施加了5.5V的過電壓,過電壓保護(hù)裝置就切斷電路系統(tǒng)停止運(yùn)行,電源模塊的LED熄滅。</p><p> 輸入系統(tǒng)重啟動(dòng)是指,電源關(guān)閉幾分鐘后打開,系統(tǒng)啟動(dòng)初始化如果系統(tǒng)不啟動(dòng)LED不亮?xí)r電源模塊需要更換了。</p><p><
31、;b> 3 允許瞬停電容</b></p><p> (1) 用交流輸入電源時(shí)</p><p> . 20ms以內(nèi)的瞬時(shí)停電時(shí)檢測(cè)到交流電下降系統(tǒng)繼續(xù)運(yùn)行</p><p> . 20ms以上的瞬時(shí)停電時(shí)有時(shí)依靠電源的負(fù)載繼續(xù)運(yùn)行有時(shí)系統(tǒng)啟動(dòng)初始化。</p><p> 而且,如果交流輸入模塊的交流供電和電源模塊相同
32、那么電源關(guān)閉時(shí),即使連接在交流輸入模塊上的傳感器處在ON狀態(tài)也可以防止因?yàn)殡娫辞袛喽斐蒓FF狀態(tài)。</p><p> 但是和電源連接的交流線路上只連接交流輸入模塊時(shí)因?yàn)榻涣鬏斎肽K內(nèi)部電容器的原因產(chǎn)生交流電下降檢測(cè)延遲,因此請(qǐng)按每臺(tái)QX10加30mA大小的負(fù)載來(lái)連接交流線。</p><p> (2) 用直流輸入電源時(shí)</p><p> . 10ms *1
33、以內(nèi)的瞬時(shí)停電時(shí)檢測(cè)到直流24V下降系統(tǒng)繼續(xù)運(yùn)行</p><p> . 10ms *1 以上的瞬時(shí)停電時(shí)有時(shí)依靠電源的負(fù)載繼續(xù)運(yùn)行有時(shí)系統(tǒng)啟動(dòng)初始化。</p><p> ?。?1 當(dāng)直流24V輸入時(shí)如小于直流24V 此值也小于10ms)</p><p> [EMC指令低電壓指令]</p><p><b> 控制箱內(nèi)的設(shè)置<
34、;/b></p><p> PLC裝置是開放型設(shè)備(可以組裝進(jìn)其他裝置的設(shè)備),一定要裝配在控制箱內(nèi)使用。這樣不光確保安全性由控制箱屏蔽從PLC裝置產(chǎn)生的噪聲效果非常良好。</p><p><b> ?。?) 控制箱</b></p><p> (a) 控制箱應(yīng)具有導(dǎo)電性。</p><p> ?。╞) 用螺
35、釘固定控制箱的頂板底板等時(shí)打磨去油漆使其達(dá)到面接觸。</p><p> ?。╟) 為了確??刂葡鋬?nèi)的內(nèi)板和控制箱本體的電氣接觸,打磨去本體的安裝螺釘部分的油漆,確保盡可能大的面積的導(dǎo)電性。</p><p> ?。╠) 為了保證即使在高頻情況下也具有低阻抗,控制箱要用較粗的接地線接地。</p><p> ?。╡) 控制箱上的開孔的直徑要在10cm以下。如果孔徑1
36、0cm以上,可能導(dǎo)致電波泄漏。</p><p> 另外,只要控制箱門和控制箱本體之間有間隙,就會(huì)有電波泄漏,因此,盡可能做到無(wú)間隙。</p><p> (2) 電源線接地線的繞線</p><p> PLC裝置的接地和電源供給線的排線按以下所示進(jìn)行:</p><p> ?。╝) 控制箱上的接地點(diǎn)設(shè)計(jì)在電源模塊的近處,使用盡可能粗短(線
37、長(zhǎng)在30cm以下)的接地線(接地用的電線)將電源模塊的LG端子(Line Grind)和FG端子(Frame Grind)接地。LG端子和FG端子起到了將PLC裝置內(nèi)部產(chǎn)生的噪聲導(dǎo)入大地的作用,因此接地線要確保具有盡可能低的阻抗。而且,接地線要短。接地線起到消除噪聲的作用。因?yàn)榻拥鼐€自身攜帶了較大的噪聲,那么接地線較短就可以避免自身成為天線。</p><p> ?。╞) 從接地點(diǎn)引出的接地線,要和電源線絞接在一
38、起。通過和接地線絞接在一起,從電源線流出的噪聲就可以大部分導(dǎo)入大地。但是,在電源線上安裝了噪聲濾波器時(shí),可以不需要和接地線絞接。</p><p><b> ?。垭娎|]</b></p><p> 由于從控制箱引出的電纜含有高頻噪聲成分,在控制箱外以天線的作用發(fā)射噪聲。因此用于與輸入輸出模塊/智能功能模塊連接,向控制箱外引出的電纜,必須使用屏蔽電纜。</p>
39、<p> 而且,為了提高抗干性而使用屏蔽電纜也是有效的。PLC裝置的輸入輸出模塊和智能功能模塊的信號(hào)線,使用了屏蔽電纜進(jìn)行屏蔽的接地處理,從而確保了抗干擾性。如果不使用屏蔽電纜,或使用屏蔽電纜但沒有進(jìn)行屏蔽層的接地處理,抗干擾性都不能滿足規(guī)格值。</p><p> (1) 屏蔽電纜的屏蔽層接地處理</p><p> ?。╝)屏蔽電纜的屏蔽層接地處理,應(yīng)靠近模塊進(jìn)行,注意
40、不要使接地后的電纜接受來(lái)自接地前的電纜的電磁感應(yīng)。</p><p> (b)除去屏蔽電纜的外部分包皮,將露出的屏蔽層以與控制箱較大的接觸面積接地。也可以使用如下所示的夾具。但是,與夾具相接觸的控制箱的內(nèi)壁部分的油漆要打磨掉。屏蔽電纜的屏蔽層接地處理如圖1所示。</p><p> 圖1. 屏蔽電纜的屏蔽層接地處理</p><p> 注)按圖2所示,將乙烯電線焊接
41、到屏蔽電纜的屏蔽層上,將線頭接地的處理方法,高頻阻抗高,屏蔽層的效果差。</p><p> 圖2. 乙烯電線焊接到屏蔽電纜的屏蔽層</p><p> (2)MELSENET/10H模塊</p><p> 對(duì)使用同軸電纜的MELSENET/10H模塊必須使用雙重屏蔽同軸電纜(三菱電線:5C 2V CCY )。使用雙重屏蔽同軸電纜可以降低30MHz以上帶寬的放射噪
42、聲。</p><p> 圖3所示雙重屏蔽同軸電纜的接地處理,是對(duì)外側(cè)的屏蔽層進(jìn)行的。</p><p> 圖3. 關(guān)于屏蔽層的接地處理</p><p> ?。?)Ethernet模塊</p><p> 以下對(duì)使用AUI電纜、雙絞電纜、同軸電纜時(shí)的注意事項(xiàng)進(jìn)行說(shuō)明。</p><p> (a)連接到10BASE5接口
43、的AUI電纜,一定要接地。因?yàn)锳UI是屏蔽電纜,如圖5所示除去部分外皮,將露出的屏蔽層以盡可能大的面積接地。</p><p> 圖4. 關(guān)于屏蔽層的接地處理</p><p> ?。╞)連接到10BASE—T接口的雙絞線電纜。請(qǐng)使用帶屏蔽層的雙絞線電纜。如圖6所示除去部分外皮,將露出的屏蔽層以盡可能大的面積接地。</p><p> 圖5. 關(guān)于屏蔽層的接地處理&l
44、t;/p><p> (c)連接到10BASE2接口的同軸電纜,必須使用雙重屏蔽同軸電纜。圖6所示是雙重屏蔽同軸電纜的接地處理,是對(duì)外側(cè)的屏蔽層進(jìn)行的。</p><p> 圖6. 關(guān)于屏蔽層的接地處理</p><p> ?。?)輸入輸出信號(hào)線及其他通信電纜</p><p> 輸入輸出信號(hào)線及其他通信電纜(RS-232、RS-422、CC-li
45、nk等),即使是向控制箱外引出的電纜,必須按和(1)同樣的方法將屏蔽電纜的屏蔽層接地。</p><p> 三菱通用可編程邏輯控制器的設(shè)計(jì)和制造的應(yīng)用,在一般性行業(yè),等等。應(yīng)用程序,其中公眾可能受到影響,如在核電廠和其他電廠各自經(jīng)營(yíng)的電力公司,并申請(qǐng)?jiān)谝粋€(gè)特殊的質(zhì)量保證系統(tǒng)要求,如鐵路公司或國(guó)防目的應(yīng)被排除在可編程邏輯控制器應(yīng)用。</p><p> 當(dāng)考慮使用的飛機(jī),醫(yī)療設(shè)備,鐵路,焚燒
46、和燃料裝置,載人運(yùn)輸設(shè)備,休閑和娛樂設(shè)備,及安全裝置,其中人的生命或財(cái)產(chǎn)可以在一個(gè)特別高可靠性要求在安全性和控制系統(tǒng)中大大受到影響。</p><p> MITSUBISHI Q Series Process CPU User’s Manual Us</p><p> Of Safety Precautions</p><p> When using Mitsu
47、bishi equipment, thoroughly read this manual and the associated manuals introduced in this manual,also pay careful attention to safety and handle the module properly.</p><p> These SAFETY PRECAUTIONS classi
48、fy the safety precautions into two categories: "DANGER"and"CAUTION.</p><p><b> ! DANGER</b></p><p> Indicates that incorrect handling may cause hazardous conditions,
49、resulting in death or severe injury.</p><p><b> ! CAUTION</b></p><p> Indicates that incorrect handling may cause hazardous conditions,resulting in medium or slight personal injury
50、 or physical damage.</p><p> [DESIGN PRECAUTIONS]</p><p> ! DANGER </p><p> . Install a safety circuit external to the PLC that keeps the entire system safe even when there are
51、problems with the external power supply or the PLC module. Otherwise, trouble could result from erroneous output or erroneous operation.</p><p> (1) Outside the PLC, construct mechanical damage preventing
52、interlock circuits such as Emergency stop, protective circuits, positioning upper and lower limits switches and interlocking forward/reverse operations.</p><p> (2) Output could be left on or off when ther
53、e is trouble in the outputs module relay or transistor. So build an external monitoring circuit that will monitor any single outputs that could cause serious trouble.</p><p> . When overcurrent which exceed
54、s the rating or caused by short-circuited load flows in the output module for a long time, it may cause smoke or fire. To prevent this, configure an external safety circuit, such as fuse.</p><p> . Build a
55、circuit that turns on the external power supply when the PLC main module power is turned on. If the external power supply is turned on ,first, it could result in erroneous output or erroneous operation.</p><p&
56、gt; . When connecting a peripheral device to the CPU module or connecting a personal computer or the like to the intelligent function module to exercise control (data change) on the running PLC,configure up an interlock
57、 circuit in the sequence program to ensure that the whole system will always operate safely.Also before exercising other control (program change, operating status change (status control))on the running PLC, read the manu
58、al carefully and fully confirm safety.</p><p> Especially for the above control on the remote PLC from an external device, an immediate,action may not be taken for PLC trouble due to a data communication fa
59、ult.</p><p> In addition to configuring up the interlock circuit in the sequence program, corrective and other actions to be taken as a system for the occurrence of a data communication fault should be pred
60、etermined between the external device and PLC CPU.</p><p> . When there are communication problems with the data link, refer to the corresponding data link manual for the operating status of each station. N
61、ot doing so could result in erroneous output or erroneous operation.</p><p> [INSTALLATION PRECAUTIONS]</p><p> ! CAUTION </p><p> . Do not bunch the control wires or communicat
62、ion cables with the main circuit or power wires, or install them close to each other. They should be installed 100 mm (3.94 inch) or more from each other. Not doing so could result in noise that would cause erroneous ope
63、ration.</p><p> . When installing extension cables, be sure that the connectors of base unit are installed correctly. After installation, check them for looseness. Poor connections could cause an input or o
64、utput failure.</p><p> . Hold down the module loading lever at the module bottom, and securely insert the module fixing latch into the fixing hole in the base unit.</p><p> Incorrect loading o
65、f the module can cause a malfunction, failure or drop.</p><p> . When using the PLC in the environment of much vibration, tighten the module with a screw.Tighten the screw in the specified torque range. Und
66、ertightening can cause a drop, short circuit or malfunction. Overtightening can cause a drop, short circuit or malfunction due to damage to the screw or module.</p><p> . Securely load the memory card into
67、the memory card loading connector. After loading, check for lifting. Lifting can cause a malfunction due to a contact fault.</p><p> . Completely turn off the external power supply before loading or unloadi
68、ng the module. Not doing so could result in electric shock or damage to the product.Note that online module change can be made when the QnPHCPU is used.Note that there are restrictions on the modules that can be changed
69、online and each module has a predetermined changing procedure.Tighten the screw in the specified torque range. Undertightening can cause short circuit or malfunction. Overtightening can cause short circuit o</p>&
70、lt;p> [WIRING PRECAUTIONS]</p><p> ! DANGER </p><p> . Completely turn off the external power supply when installing or placing wiring. Not completely turning off all power could result i
71、n electric shock or damage to the product.</p><p> . When turning on the power supply or operating the module after installation or wiring work,be sure that the module's terminal covers are correctly at
72、tached. Not attaching the terminal cover could result in electric shock.</p><p> ! CAUTION </p><p> . When wiring in the PLC, be sure that it is done correctly by checking the product's r
73、ated voltage and the terminal layout. Connecting a power supply that is different from the rating or incorrectly wiring the product could result in fire or damage.</p><p> . Tighten the terminal screws with
74、 the specified torque. If the terminal screws are loose,it could result in short circuits, fire, or erroneous operation. Tightening the terminal screws too far may cause damages to the screws and the module, resulting in
75、 fallout, short circuits, or malfunction.The module has an ingress prevention label on its top to prevent foreign matter, such as wire offcuts, from entering the module during wiring.Do not peel this label during wiring.
76、</p><p> Before starting system operation, be sure to peel this label because of heat dissipation.</p><p> [STARTUP AND MAINTENANCE PRECAUTIONS]</p><p> ! DANGER </p><
77、;p> . The online operations conducted for the CPU module being operated, connecting the peripheral device (especially, when changing data or operation status), shall be conducted after the manual has been carefully
78、read and a sufficient check of safety has been conducted.Operation mistakes could cause damage or problems with of the module.</p><p> . Correctly connect the battery.</p><p> Also, do not cha
79、rge, disassemble, heat, place in fire, short circuit, or solder the battery.Mishandling of battery can cause overheating or cracks which could result in injury and fires.</p><p> . Do not disassemble or mod
80、ify the modules.</p><p> Doing so could cause trouble, erroneous operation, injury, or fire.</p><p> . Switch all phases of the external power supply off before mounting or removing the module
81、.If you do not switch off the external power supply, it will cause failure or malfunction of the module.</p><p> [DISPOSAL PRECAUTIONS]</p><p> ! CAUTION </p><p> . When disposi
82、ng of this product, treat it as industrial waste. </p><p> [SWITCH OPERATION AFTER WRITING IN PROGRAM]</p><p><b> POINTS</b></p><p> (1) Even if the RUN/STOP switch
83、is set to RUN immediately after a program is written when the CPU module is in the stop status, CPU module will not come into RUN status.When the CPU module is reset with the RESET / L.CLR switch and the RUN/STOP switch
84、is set to RUN after a program has been written, the CPU module can be brought into RUN status.</p><p> (2) If the CPU module is desired to be brought into RUN status without resetting it, operate the RUN/S
85、TOP switch from STOP to RUN, RUN to STOP, and STOP to RUN in that order. After the seconds STOP to RUN switch operation, the CPU module is brought into RUN status.</p><p> (3) When a program is written whi
86、le the CPU module is running in boot operation, the program written during the running is written into the program memory. After a program has been written while the CPU module is running, write the program also into the
87、 boot original memory. Failure to write a program into the boot original memory will run an old program at the time of the next boot operation.</p><p> This User's Manual describes the hardware specific
88、ations and handling methods of the Process CPU.The Manual also describes those items related to the specifications of the power supply module, main base unit, extension base unit, extension cable, memory card and battery
89、.The Process CPU is a process control-compatible CPU module.Based on the High Performance model QCPU, the Process CPU has the following additional instructions and functions.</p><p> ? Process control instr
90、uctions: 52 instructions</p><p> ? Auto tuning function</p><p> ? Online module change</p><p> ? MELSECNET/H multiplex remote I/O system compatibility</p><p> Proce
91、ss CPU has the following new features:</p><p> (1) 52 instructions added as process control instructions</p><p> 52 additional instructions are capable of high-level process control.</p>
92、;<p> (2) 2-degree-of-freedom PID control system</p><p> The 2-degree-of-freedom PID control system adopted enables optimum response to both set value variation and disturbance variation.</p>
93、<p> (3) Addition of auto tuning function (PID constant initial value setting)</p><p> The auto tuning function automates control parameter adjustment, shortens adjustment, saves the labor of opera
94、tors and control engineers, and resolves differences in adjustment results between individuals.</p><p> (4) Module can be changed online (online module change)</p><p> When a module fails, yo
95、u can change it without stopping the system.Online module change applies to the Q series I/O modules and to the A/D converter, D/A converter, thermocouple input and temperature control modules of function version C and l
96、ater.</p><p> (5) Multiplex remote I/O system of MELSECNET/H can be configured by mounting the remote master station of the MELSECNET/H, you can configure the multiplex remote I/O system of the MELSECNET/H
97、.</p><p> (6) Compatibility with process-control-dedicated software package</p><p> Use of PX Developer allows PID control programs to be created easily with function blocks.</p><p
98、> Combination with the process control software package (PX Developer) provides excellent engineering environment.</p><p> In the Process CPU, a time required for writing/reading of a program or monitor
99、ing has been reduced through the high speed communication at a speed of 115.2kbps max. by the RS-232, and a communication time efficiency at the time of debugging has been increased.</p><p> In the Process
100、CPU,a high speed communication at a speed of 12Mbps is allowed through the USB.</p><p> [LOADING AND INSTALLATION]</p><p> The precautions on the wiring</p><p> ! DANGER </p
101、><p> . Completely turn off the external power supply when installing or placing wiring. Not completely turning off all power could result in electric shock or damage to the product.</p><p> . Wh
102、en turning on the power supply or operating the module after installation or wiring work, be sure that the module's terminal covers are correctly attached. Not attaching the terminal cover could result in electric sh
103、ock.</p><p> ! CAUTION </p><p> . When wiring in the PLC, be sure that it is done correctly by checking the product's rated voltage and the terminal layout. Connecting a power supply tha
104、t is different from the rating or incorrectly wiring the product could result in fire or damage.</p><p> TROUBLESHOOTING</p><p> When a module fails, you can change it without stopping the sys
105、tem.</p><p> Online module change applies to the Q series I/O modules and to the A/D converter, D/A converter, thermocouple input and temperature control modules of function version C and later.</p>
106、<p> In order to increase the reliability of the system, not only highly reliable devices are used but also the speedy startup of the system after the occurrence of trouble becomes an important factor.To start up t
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