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項目 規(guī)格 備注
2 飛車（一開機電機速度很快上升，因系統(tǒng)超差報警而停止） 系統(tǒng)未給伺服單元指令，而電機自行行走。是由于正反饋或無速度反饋信號引起，所以應(yīng)查伺服輸出，速度反饋等回路。 1． 檢查三相輸入電壓是否有缺相。 2． 查外部接線是否都正常，包括：3相185V 輸入（端子A，1，2），輸出到電機的U、V，W，G（端子5、6，7、8）是否接反，CN1插頭是否有松動。

軟件特征：
TG報警（TG紅燈點亮） 失速或暴走，即電機的速度不按指令走，所以，從指令到速度反饋回路，都有可能出故障。 1．可通過互換單元來初步判斷是否為控制單元還是電機故障，一般是單元的可能性大。 2．另外可查看是否為上電就報警還是速度高了報警。如果上電就報警，則有可能是主回路可控硅壞了。如果是高速報警而低速正常則可能是控制板或電機有問題，這也可通過交換伺服單元來判別。

? 工業(yè)恒壓供水系統(tǒng)
11 不能準備好系統(tǒng)報警顯示伺服VRDY OFF。 系統(tǒng)開機自檢后，如果沒有急停和報警，則發(fā)出PRDY信號給伺服單元，伺服單元接收到該信號后，接通主接觸器，送回VRDY信號，如果系統(tǒng)在規(guī)定時間內(nèi)沒有接收到VRDY信號，則發(fā)出此報警，同時斷開各軸的PRDY信號，因此，上述所有通路都是故障點。 1． 檢查各個插頭是否接觸不良，包括控制板與主回路的連接。 2． 查外部交流電壓是否都正常，包括：3相185V輸入（端子A，1，2），單相100V（端子3，4）。

新疆烏魯木齊6ES7232-0HB22-0XA8豐富經(jīng)驗
今日筆者受人之邀，特將這些不足和錯誤歸納總結(jié)展示給大家，希望大家在PLC技術(shù)學(xué)習(xí)的道路上引以為鑒。無論日系、歐系亦或國內(nèi)PLC產(chǎn)品，其直接面對用戶的輸入、輸出端口均為8進制。為此在編寫程序時，若出現(xiàn)XI9；Y1Q28等“非法”元件編號，那就貽笑大方啦。作為剛接觸plc編程技術(shù)的初學(xué)者，在根據(jù)要求編輯程序前，一定要按照步驟先將PLC端口分布表和PLC端口電氣接線圖繪制出來。如此一來利于后續(xù)編程中的軟元件分派；二則為PLC實操接線工作打下基礎(chǔ)。
6ES7232-0HB22-0XA8控匠編程

交流電每秒鐘周期性變化的次數(shù)叫頻率，用f符號表示，單位為周/秒或赫茲(Hz)，我國電網(wǎng)的頻率為f=50Hz，周期與頻率之間關(guān)系為每秒鐘所變化的電角度叫角頻率（ω），角頻率與頻率、周期的關(guān)系為[例]已知i(t)=7.07sin(300πt-70°)A，u(t)=311sin（300πrad/s+285°）V，則電流i及電壓u的相位分別為____、____，它們的相位差為____，i(t)達到零值比u(t)____。