外部設(shè)備就是與PLC實(shí)際過(guò)程直接聯(lián)系的各種開(kāi)關(guān)、傳感器、執(zhí)行機(jī)構(gòu)、負(fù)載等。這些設(shè)備發(fā)生故障,會(huì)直接影響PLC系統(tǒng)的控制功能。因此,維修PLC,先要分清是外部設(shè)備故障,還是PLC本身故障。
系統(tǒng)故障
廈門(mén)岳航計(jì)算機(jī)工程有限公司
聯(lián)系人:李素云
企業(yè)QQ:2851195446,2851195466
手機(jī):18965423501
座機(jī):0592-5165501
1)系統(tǒng)故障是影響PLC系統(tǒng)運(yùn)行的全局性故障。
2)PLC系統(tǒng)故障可以分為固定性故障、偶然性故障。
3)故障發(fā)生后,可以重新啟動(dòng)使系統(tǒng)恢復(fù)正常,則就是偶然性故障。如果重新啟動(dòng)不能恢復(fù),而是需要更換硬件或軟件,系統(tǒng)才能夠恢復(fù)正常,則認(rèn)為是固定性故障。
硬件故障
PLC硬件故障主要指PLC系統(tǒng)中的模板、電路損壞而造成的故障。
軟件故障
PLC軟件故障包含軟件錯(cuò)誤、操作錯(cuò)誤等。PLC軟件故障一般可以通過(guò)PLC本身的自診斷測(cè)試功能或者軟件來(lái)查看、檢查。
New Ashcroft Industrial Duralife Gauge Qty:3 35-1009-AW-02B-100#-XLJ 3-1/2" XLJ
New Marsh Bellofram Paper Machine Gauge W6046 0 - 60 PSI 3.5 in.
New Arrow Tank GP-631-08 GP63108 Assy, Gauge Protector GP-631-72
Manufacturer Rebuilt Marposs Plug Gauge J3517662230
New Ashcroft General Service Guage 0-100psi 45 1009S 04L 45-1009SL-04L-XGV
Rebuilt Marposs Head Measuring Gauge 3414023052 TMRO
New Marposs Snap Gauge 2 Transd Range 20/45 3415205112
New Ernst Liquid Tight Water Guage Valve EFI:70A-316 1/2" 500PSI @ 420 F
Used Leybold-Heraeus Combivac Vacuum Gauge PV120S2 16082 118229 50/60Hz 10VA
Rebuilt Marposs Plug Gauge J3517662230
New Marposs Head Measuring Gauge 3414023052 TMRO
Rblt Tokyo Seimitsu Measure Gauge Head Model: A635454
Rblt Tokyo Seimitsu Measure Gauge Head Model: A635455
Rblt Tokyo Seimitsu Measure Gauge Head Model: A635453
New Marposs Snap Gauge 2 Transd Range 20/45 3415205112
New Mitutoyo Linear Gage Head LGF-110L KK542-161 0186107-00 TMRO
Rblt Tokyo Seimitsu Measure Gauge Head Model: A635453
BRC300
BRC400
CI520V1
CI522
CI522A
CI526
CI532V02
CI532V04
CI540
CI560
CI570
CI627
CI801
CI810B
CI810V1
CI820
CI820-1
CI820-2
CI820V1
CI830
CI840
CI840A
CIC01
CLC01
CLC03
Rblt Bradley Measuring Gauge Head 22242-38A
New Tokyo Seimitsu Sigma Gripper Head Gauge E-TS-1086B 112mm
New Oriental Gear Head New Oriental Gear Head 4GN100RA 411E25 R 411E25 RY9 05788
New Oriental Motor Gear Head Motor 5GCH25KB
New Oriental Motor Co..LTD. Gear Head 5GC18K