【正文】 e or damage. TROUBLESHOOTING When a module fails, you 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 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） converter, thermocouple input and temperature control modules of function version C and later. 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 bees an important start up the system speedily, the cause of the trouble must be located and eliminated correctly. The basic three points that must be followed in the troubleshooting are as follows. (1) Visual inspection Visually check the following. 1) Movement of sequencer (stopped condition, operating condition) 2) Power supply on/off 3) Status of input/output devices 4) Power supply module, CPU module,I/Omodule,intelligent function module,installation condition of extension cable 5) Status of wiring(I/O cables,cables) 6) Display status of various types of indicators (POWER LED, RUN LED,ERR. LED, I/O LED) 7) Status of setting of various types of set switches (Setting of No. of stages of extension base unit,power interrupt holdon status).After confirming items 1)to 7),connect the GX Developer, and check the operating conditions of the PLC and the contents of the program. (2) Check of trouble Check to see how the operating condition of the PLC varies while the PLC is operated as follows. 1) Set the RUN/STOP switch to STOP. 2) Reset the trouble with the RESET/ switch. 3) Turn ON and OFF the power supply. (3) Reduction in area Estimate the troubled part in accordance with items (1) and (2) above. 1) PLC or external devices 2) I/O module or others 3) Sequence program The CPU module returns an error code to the general data processing request origin when an error occurs and there is a general data processing request form the peripheral equipment,intelligent function module, or work system. If an error occurs,when a 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） general data processing is requested from the peripheral devices, intelligent function module,and work system. [POWER SUPPLY MODULE] POINTS 1 Overcurrent protection The overcurrent protection device shuts off the 5 V, 24 VDC circuit and stops the system if the current flowing in the circuit exceeds the specified value. The LED of the power supply module is unlit or lit dimly upon a voltage drop. If this device is activated, switch the input power supply off and eliminate the cause such as insufficient current capacity or short. Then, a few minutes later, switch it on to restart the system. The initial start for the system takes place when the current value bees normal. 2 Overvoltage protection The overvoltage protection device shuts off the 5 VDC circuit and stops the system if a voltage of to VDC is applied to the circuit. When this device is activated, the power supply module LED is switched OFF. If this happens, switch the input power OFF, then a few minutes later ON. This causes the initial start for the system to take power supply module must be changed if the system is not booted and the LED remains OFF. 3 Permissible instantaneous power failure time (1) For AC input power supply . An instantaneous power failure lasting less than 20ms will cause AC down to be detected, but operation will continue. . An instantaneous power failure lasting more than 20ms may cause the operation to continue or initial start to take place depending on the power supply load. Furthermore,by using the same AC power supply for the AC input module and the power supply module,it is possible to prevent the sensor, to which the AC input module is connected,from turning OFF when it is ON when the power is turned OFF. However, if only the AC input module is connected to the AC line, which is connected to the power suppludetection of the AC down for the power supply module may be delayed by the capacitor in the AC input module. Thus,connect a load of approx. 30mA per QX10 unit to the AC line. (2) For DC input power supply . An instantaneous power failure lasting less than 10ms (*4) will cause 24VDC down to be detected, but operation will continue. . An instantaneous power failure lasting more than 10ms (*4) may cause the 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） operation to continue or initial start to take place depending on the power supply load. (1: This is for a 24VDC input. This is 10ms or less for 24VDC or less.) [EMC AND LOW VOLTAGE DIRECTIVE] The PLC is open equipment and must be installed within a control cabi for not only ensures safety but also ensures effective shielding of PLCgenerated electromagic noise. (1) Control cabi (a) Use a conductive control cabi. (b) When attaching the control cabi39。 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。 （ 1） 屏蔽電纜的屏蔽層接地處理 （ a）屏蔽電纜的屏蔽層接地處理，應(yīng)靠近模塊進(jìn)行，注意不要使接地后的電纜接受來自接地前的電纜的電磁 感應(yīng)。 （ e） 控制箱上的開孔的直徑要在 10cm以下。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)。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。 該用戶的手冊描述的是進(jìn)程的 CPU 的硬件規(guī)格和處理方法。 操作失誤可能會(huì)造成損害或有問題的模塊。擰緊螺絲在指定的扭矩范圍。除了配置了聯(lián)鎖電路中的序列程序，糾正措施及其他應(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。西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 本科畢業(yè)設(shè)計(jì)（論文）外文翻譯譯文 學(xué)生姓名 ： 劉 飛 院 （系）： 電子工程學(xué)院 專業(yè)班級(jí) ： 電氣 0802 指導(dǎo)教師 ： 李 明 完成日期 ： 2020 年 4 月 20 日 西安石油大學(xué)本科畢業(yè)設(shè)計(jì) （論文） 三菱 Q 用戶手冊 安全守則 當(dāng)使用三菱設(shè)備時(shí)， 請仔細(xì)閱讀本手冊和本手冊中提及的其他相關(guān)手冊 ,對(duì)安全問題予以充分重視 ,進(jìn)行正 確的操作。 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。請注意，有限制的模塊，可以改變在線和每個(gè)模塊已預(yù)定的變化過程。 [啟動(dòng)和維護(hù)注意事項(xiàng) ] !危險(xiǎn) . 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)在手冊中仔細(xì)閱讀并有足夠的安全檢查下進(jìn)行。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。 [荷載與安裝 ] 預(yù)防措施的布線 !危險(xiǎn) . 完全關(guān)閉外接電源或安裝時(shí)放置布線。 1） PLC 或外部設(shè)備 2） I/O 模塊或其他 3）