描述
PLC控制系統(tǒng)故障是指其失去了規(guī)定功能,一般指整個(gè)生產(chǎn)控制系統(tǒng)失效的總和,它又可分為PLC故障和現(xiàn)場(chǎng)生產(chǎn)控制設(shè)備故障兩部分。PLC系統(tǒng)包括中央處理器、主機(jī)箱、擴(kuò)展機(jī)箱、I/O模塊及相關(guān)的網(wǎng)絡(luò)和外部設(shè)備。現(xiàn)場(chǎng)生產(chǎn)控制設(shè)備包括端口和現(xiàn)場(chǎng)控制檢測(cè)設(shè)備,如繼電器、接觸器、閥門、電動(dòng)機(jī)等。
大多數(shù)有關(guān)PLC的故障是外圍接口信號(hào)故障,所以在維修時(shí),只要PLC有些部分控制的動(dòng)作正常,都不應(yīng)該懷疑PLC程序。如果通過(guò)診斷確認(rèn)運(yùn)算程序有輸出,而PLC的物理接口沒(méi)有輸出,則為硬件接口電路故障。另外硬件故障多于軟件故障,大多是由外部信號(hào)不滿足或執(zhí)行元件故障引起,而不是PLC系統(tǒng)的問(wèn)題。
PLC故障分析及排除方法:
為了便于故障的及時(shí)解決,首先要區(qū)分故障是全局性還是局部性的,如上位機(jī)顯示多處控制元件工作不正常,提示很多報(bào)警信息,這就需要檢查CPU模塊、存儲(chǔ)器模塊、通信模塊及電源等公共部分。如果是局部性故障可從以下幾方面進(jìn)行分析。根據(jù)上位機(jī)的報(bào)警信息查找故障。PLC控制系統(tǒng)都具有豐富的自診斷功能,當(dāng)系統(tǒng)發(fā)生故障時(shí)立即給出報(bào)警信息,可以迅速、準(zhǔn)確地查明原因并確定故障部位,具有事半功倍的效果,是維修人員排除故障的基本手段和方法。根據(jù)動(dòng)作順序診斷故障。對(duì)于自動(dòng)控制,其動(dòng)作都是按照一定的順序來(lái)完成的,通過(guò)觀察系統(tǒng)的運(yùn)動(dòng)過(guò)程,比較故障和正常時(shí)的情況,即可發(fā)現(xiàn)疑點(diǎn),診斷出故障原因。如某水泵需要前后閥門都要打開(kāi)才能開(kāi)啟,如果管路不通水泵是不能啟動(dòng)的。
產(chǎn)品承
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌:ABB???,AB??,GE,FOXBORO,本特利,英維思,伍德沃德,西屋,瑞恩,施耐德,西門子,摩托羅拉,安川。力士樂(lè)。ACSO,橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家
DEC KFPAC-XF SCSI RAID CONTROLLER
DEC MS86-DA 64 MEG VAX 8600
HEWLETT PACKARD A3518A HP 24 MB MODEL 12 DISK ARRAY C
NORTEL NTFP41CA-02 NORTEL PASSPORT DS1 VOICE FP M
QUANTUM TH61F-02 DLT7000 LOADER READY-NO BEZEL-
HP 316095-B21 DS-DMGGE-BD STORAGEWORKS EDGE SWITCH 2/24
DEC M8418-JC MODULE
HIRSCHMAN GES-24TP/2SX HIWAY FAST ETHERNET SWITCH *NEW*
HP A6268A VIRTUAL ARRAY 7410 W/ DUAL CTRL A6218A
DEC 54-22138-01 PWR BACKPLANE DEFGA-BA
DEC 70-40034-01 STARLIGTH BUS LVD I/O MODULE
DEC M3136 Q-BUS T1 LINE SERVIVE
DEC HA205AA POWER SUPPLY
DEC RZ73-E-AF SCSI DRIVE FOR BA440BOX
DEC VX217-DA 1 VX20A-CB,VRC16-?CA,
HEWLETT PACKARD C4215A HP LASERJET 8100N PRINTER
MISC 680QJ-B9 BA440 VAX4000-500 KA680-AA BOX
DEC BA22A-B9 VAXFT 810 SYSTEM BOX
HP INTEGRITY BL860C AD323A (2) 1.6GHZ SERVER 448066-001
COMPAQ 234082-001 12-LINE PWR INJECTOR*NEW*
DEC 54-19369-03 DEFEB FI SAS SM DUAL MODULE
DEC 54-30370-01 FORCE COMPUTER MODULE
DEC 54-22629-01 CBUS/PCI/VME BACKPLANE
DEC 54-24758-07 ALPHA DP264 DAUGHTER CARD
DEC 54-24758-06 ALPHA DP264 DAUGHTHER
DEC 70-31648-01 LAN40 BOARD W/BRACKET
DEC 70-29988-01 VAX7000/BA700 SYSTEM BOX
DEC B4115-JA PROCCESOR BOARD**MISSING CPU*
DEC B4115-AA PROCCESOR BOARD***MISSING CPU*
DEC BA214-AA INDUSTRIAL VAX620
DEC DELHF-UA FDDI MODULAR INTERFACE
DEC DTCN5-AA DTCN5-AA
DEC M2M-PC164-2 MYRICOM PC164 MODULE
DEC M3121-00 DFA01-AA MODULE
DEC M3136-AA M3136-AA
DEC SA0014 ZNYX NETWORK CARD
FORCE 104968 FORCE/CENTELLIS 10BP-720
HEWLETT PACKARD A4688-62911 SURESTORE E BRIDGE FC 4/1 H
HEWLETT PACKARD A6214-60001 HP DS2400 LINK CTRL CARD
HEWLETT PACKARD LP-14847-31 HP PRINTER SERVICE MAINTE
IBM 07H5347 IBM QL50 4PORT 9672 ESCON CARD
MISC 159MB DISK DRIVE 159MB DISK DRIVE
MISC 6210350-01 TL81X ROBOTIC CONTROLLER
NORTEL NTBP40CA-01 NORTEL PASSPORT DS3 FP MODULE
PRINTRONIX 141592-001 PRINTRONIX P6080 PCBA LOGIC
PRINTRONIX 141509-001 PRINTRONIX P6080 PCBA LOGIC
NORTEL NTFN18AC-02 NORTEL PASSPORT ILS FWD FP MOD
NORTEL NTBP78DA-01 NORTEL PASSPORT TOKEN RING FP
PRINTRONIX 104900-002 PRINTRONIX P6080 COMB ASSEMBLY
DEC ALPHA 54-24678-01 VME 5/480 I/O MODULE
COMPAQ 349351-B21 DLT7000 35/70GB S-DIFF L.READY
COMPAQ 3X-MS8AA-BU CPQ 1GB INFINEON MEMORY KIT X GS80/1
IBM 51G8139 IBM 16-PORT REMOTE ASYN NODE
MISC DAGWG-AA GIGAswitch /ATM SYSTEM
HP 333764-B21 DS-DSGGD-DB SAN SWITCH 2/32 POWER PACK
HP AA980A 361193-001 SAN SWITCH 2/8V POWER PAK
270459-001 CPQ SCALABLE BUS BAR B LEFT&RIGHT
DEC DS-SSL14-RS 14 SLOT DISK SHELF W/O MT KIT
COMPAQ 159667-001 SANSWITCH “CHASSIS ONLY”
COMPAQ 217276-B21 CONTROLLER SHELF*NEW*
COMPAQ 327371-001 STORAGEWORKS F C 12-PORT HUB
COMPAQ 190710-002 CL 0 DRIVE INTERFACE BOARD W/G
COMPAQ NAS-S1000-866 NAS S1000 MOTHERBOARD W/866MHZ
DEC 54-20714-01 MOTHER MODULE
DEC 54-14636 RC25 ATEC CONTR. MODULE
DEC 54-19551-01 486 BASE BOARD
DEC 54-16704-01 DECTALK III MODULE
DEC 54-19413-01 DSRVW-AA/YA LOGIC
DEC 54-23310-06 CPU BOARD
DEC 54-19443-01 DETMM-M DAUGTHER BOARD
DEC 54-24213-01 MODULE
DEC 54-24807-01 ALPHA XL 366 MOTHER BOARD
DEC 54-23534-01 P590 B5 MOTHER BOARD
DEC 54-25117-01 DEC GS160 CLOCK SPLITTER MODULE
DEC 54-30640-01 REGULATOR MODULE ASSY
DEC 54-23281-01 GIGA SWITCH BKPLANE
DEC 70-21127-01 RC25 HDA MECHANISM ASSY
DEC 54-24680-01 AS500 400MHZ CPU BOARD REV. E05
DEC 54-25151-04 POWERSTORM 3D GRAPHICS CARD
DEC 70-33725-02 CONTROLLER SHELF*NEW*
DEC 70-31465-04 RA450 PEDESTAL ENCLOS.W/O CTRLS
DEC 70-40020-S2 10 BAY DEVICE SHELF.
DEC 70-33259-06 DS-HSG80-XX CONTROLLER MODULE
DEC A62-00478 PERITEK MODULE
DEC 70-40020-02 10 BAY DEVICE SHELF.
PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家