WOODWARD 9905-537調(diào)節(jié)器現(xiàn)貨模塊

類目：RELIANCE
型號：WOODWARD 9905-537
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瑞昌明盛進出口貿(mào)易有限公司
主營DCS控制系統(tǒng)備件，PLC系統(tǒng)備件及機器人系統(tǒng)備件，
優(yōu)勢品牌：Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各種進口工業(yè)零部件

WOODWARD 9905-537調(diào)節(jié)器現(xiàn)貨模塊

WOODWARD 9905-537調(diào)節(jié)器現(xiàn)貨模塊

這時就應(yīng)該檢查電源保險絲是否熔斷，更換熔絲是應(yīng)用同規(guī)格同型號的保險絲，無同型號的進口熔絲時要用電流相同的快速熔絲代替。如重復(fù)燒保險絲說明電路板短路或損壞，更換整個電源。“5VDC”、“24VDC”燈熄滅表示無相應(yīng)的直流電源輸出，當(dāng)電源偏差超出正常值5%時指示燈閃爍，此時雖然PLC仍能工作，但應(yīng)引起重視，必要時停機檢修。“BATT”變色燈是后備電源指示燈，綠色正常，黃色電量低，紅色故障。黃燈亮?xí)r就應(yīng)該更換后備電池，手冊規(guī)定兩到三年更換鋰電池一次，當(dāng)紅燈亮?xí)r表示后備電源系統(tǒng)故障，也需要更換整個模塊。
2、I/O模塊故障
輸入模塊一般由光電耦合電路組成；輸出模塊根據(jù)型號不同有繼電輸出、晶體管輸出、光電輸出等。每一點輸入輸出都有相應(yīng)的發(fā)光二極管指示。有輸入信號但該點不亮或確定有輸出但輸出燈不亮?xí)r就應(yīng)該懷疑I/O模塊有故障。輸入和輸出模塊有6到24個點，如果只是因為一個點的損壞就更換整個模塊在經(jīng)濟上不合算。通常的做法是找備用點替代，然后在程序中更改相應(yīng)的地址。但要注意，程序較大是查找具體地址有困難。特別強調(diào)的是，無論是更換輸入模塊還是更換輸出模塊，都要在PLC斷電的情況下進行，S5帶電插拔模塊是不允許的。
3、CPU模塊故障
通用型S5PLC的CPU模塊上往往包括有通信接口、EPROM插槽、運行開關(guān)等，故障的隱蔽性更大，因為更換CPU模塊的費用很大，所以對它的故障分析、判斷要尤為仔細。
PLC電源模塊維修技術(shù)實例：一臺PLC合上電源時無法將開關(guān)撥到RUN狀態(tài)，錯誤指示燈先閃爍后常亮，斷電復(fù)位后故障依舊，更換CPU模塊后運行正常。在進行芯片級維修時更換了CPU但故障燈仍然不停閃爍，至到更換了通信借口板后功能才恢復(fù)正常。
三、外圍線路故障
據(jù)有關(guān)文獻報道，在PLC控制系統(tǒng)中出現(xiàn)的故障率為：CPU及存儲器占5%，I/O模塊占15%，傳感器及開關(guān)占45%，執(zhí)行器占30%，events and reports of all equipment in the pump station can be recorded, displayed and printed on LCD. Printing records are divided into regular printing records, accident and fault random printing records, call printing records and other working modes. Records and reports shall be displayed and printed in Chinese and international symbols.

Statistics and tabulation printing can easily generate and modify tables, query and maintain databases, and freely generate reports in any period in the past. Printing includes timing printing and calling printing. Calling printing includes real-time printing and history printing, and automatic printing in case of accident and failure. The printed forms include operation record statistics, including unit startup and shutdown time and times, circuit breaker tripping and closing time and times, accident and fault statistics, event sequence record report, daily, ten day, monthly and annual water pumping statistics, historical report, water time-sharing measurement report, etc.

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