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PLC的可靠性很高且本身有很完善的自診斷功能，如果PLC出現(xiàn)故障，借助自診斷程序可以方便地找到故障的原因，排除后就可以恢復(fù)正常工作。
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
大量的工程實(shí)踐表明，PLC外部輸入、輸出設(shè)備的故障率遠(yuǎn)遠(yuǎn)高于PLC本身的故障率，而這些設(shè)備出現(xiàn)故障后，PLC一般不能覺(jué)察出來(lái)，可能使故障擴(kuò)大，直至強(qiáng)電保護(hù)裝置動(dòng)作后才停機(jī)，有時(shí)甚至?xí)斐稍O(shè)備和人身事故。停機(jī)后，查找故障也要花費(fèi)很多時(shí)間。為了及時(shí)發(fā)現(xiàn)故障，在沒(méi)有釀成事故之前使PLC自動(dòng)停機(jī)和報(bào)警，也為了方便查找故障，提高維修效率，可用PLC程序?qū)崿F(xiàn)故障的自診斷和自處理。
GE Pushbutton White with P9PTNVJ Power Supply Transformer
GE Pushbutton Red with P9PTNVJ Power Supply Transformer
GE Pushbutton Red with P9B01VN Contact Block
Allen Bradley 802T-W1H Non-Adjustable Nylon Roller Lever
Allen Bradley 800T-FXQH24RA1 Illuminated Push-Pull Mushroom Head Pushbutton
Telemecanique XCS-PA593 Safety Interlock Switch
Telemecanique ZBY6102 Blank Legend Plate
Telemecanique ZBY9330 Switch Legend Plate
Sentrol Industrial 151-7Z12K GuardSwitch
Telemecanique ZB4BZ104 Mounting Base with (2) Contact Blocks
Telemecanique ZB4BA2 Momentary Pushbutton Black
LPM 1297270-54 Switch
Rees 4800-1B Up/Down Control Station
General Equipment 43-300 Proximity Limit Switch
Crown 73289 Interlock Kit
Crown 73374 Switch
GE CR215GL10 Limit Switch Operator Lever
Square D 9001-KM1 Illumin Pushbutton White W/ Square D 9001-KA-1 Contact Block
Square D 9001-KM1 Illumin Pushbutton Green W/ Square D 9001-KA-1 Contact Block
Square D Pushbutton Black with Square D 9001-KA-1 Contact Block (Used)
Square D Pushbutton Red with Square D 9001-KA-1 Contact Block (Used)
GE Pushbutton Base with GE P9B10VN Contact Block (Used)
ASCO 9204 Remote Control Switch (Used)
Telemecanique ZA2-BZ104 Kit Base with (2) N.O. Contacts
PAR01
PBK10
PBK20
PBM070
PCM03
PCM14
PCM15
PCP02
PCP04
PCP06
PCP36
PCV02
PCV24
PCZ01
PCZ10
PCZ20
PCZ25
PCZ28
PDC24
PDD02
PDK01
PDK02
PDS01
PDV01
PE01
PEA01
PEA03
PEB02
PFBK101
PFBK102
PFBK103
P-HA-MCL-110000000
P-HA-MCL-210000000
PHD 15901-1 Liquid Resistant Reed Switch
Telemecanique ZB4BVB5 Mounting Collar with 24V Yellow LED Lamp
Telemecanique ZB4BD3 Selector Switch
Allen Bradley 800T-QT10 Illuminated Pushbutton with AB 800T-XD1 Contact Block
TEEL 4RK17 Float Switch
Square D 9025-BCW33 Temperature Control Switch
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