描述

PP836

??1.可靠性高，抗干擾能力強

? ? 工業(yè)生產(chǎn)對控制設(shè)備的可靠性要求：

? ? ①平均故障間隔時間長

? ? ②故障修復(fù)時間（平均修復(fù)時間）短

? ? 任何電子設(shè)備產(chǎn)生的故障，通常為兩種：

? ? ①偶發(fā)性故障。由于外界惡劣環(huán)境如電磁干擾、超高溫、超低溫、過電壓、欠電壓、振動等引起的故障。這類故障，只要不引起系統(tǒng)部件的損壞，一旦環(huán)境條件恢復(fù)正常，系統(tǒng)也隨之恢復(fù)正常。但對PLC而言，受外界影響后，內(nèi)部存儲的信息可能被破壞。

? ? ②永久性故障。由于元器件不可恢復(fù)的破壞而引起的故障。

? ? 如果能限制偶發(fā)性故障的發(fā)生條件，如果能使PLC在惡劣環(huán)境中不受影響或能把影響的后果限制在最小范圍，使PLC在惡劣條件消失后自動恢復(fù)正常，這樣就能提高平均故障間隔時間；如果能在PLC上增加一些診斷措施和適當?shù)谋Ｗo手段，在永久性故障出現(xiàn)時，能很快查出故障發(fā)生點，并將故障限制在局部，就能降低PLC的平均修復(fù)時間。為此，各PLC的生產(chǎn)廠商在硬件和軟件方面采取了多種措施，使PLC除了本身具有較強的自診斷能力，能及時給出出錯信息，停止運行等待修復(fù)外，還使PLC具有了很強的抗干擾能力。

產(chǎn)品承
保?證?全新原裝進口,
保?證?安全準時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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PP836

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