6FC5210-0DA00-0AA0
PLC控制系統(tǒng)故障率情況是怎樣的？
1）CPU與存儲器故障率占5%。
2）I/O模塊故障率占15%。
3）傳感器及開關(guān)故障率占45%。
4）執(zhí)行器故障率占30%。
5）接線等其他方面故障率占5%。
02
PLC的故障多發(fā)點有哪些？
1）繼電器、接觸器。
2）閥門、閘板。
3）開關(guān)、極限位置、安全保護、現(xiàn)場操作的一些元件或設(shè)備。
4）PLC系統(tǒng)中的子設(shè)備。
5）傳感器、儀表。
6）電源、地線、信號線的噪聲。
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