ABB 可控硅 IGCT 5SHX0360D0001 HL000384P0101 3BHB004027R0101
ABB 可控硅 IGCT 5SHX0360D0001 HL000384P0101 3BHB004027R0101
ABB 可控硅 IGCT 5SHX0360D0001 HL000384P0101 3BHB004027R0101
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6、人為故障:在對(duì)系統(tǒng)進(jìn)行維護(hù)或故障處理,有時(shí)會(huì)發(fā)生人為誤操作現(xiàn)象,這對(duì)于經(jīng)常進(jìn)行系統(tǒng)維護(hù)或新參加系統(tǒng)檢修維護(hù)的人員來(lái)說(shuō)都是會(huì)發(fā)生的。一般在修改控制邏輯、下裝軟件、重啟設(shè)備或強(qiáng)制設(shè)備,保護(hù)信號(hào)是易發(fā)生誤操作事件。
7、電源故障:電源方面的問(wèn)題也較多,如備用電源不能自投,保險(xiǎn)配置不合理及電源內(nèi)部故障等造成電源中斷,穩(wěn)壓電源波動(dòng)引起保護(hù)誤動(dòng)及接插頭接觸不良導(dǎo)致穩(wěn)壓電源無(wú)輸出;有的系統(tǒng)整個(gè)機(jī)柜通過(guò)一路保險(xiǎn)供所有輸入信號(hào)或一路電源外接負(fù)載很大,還的控制電源既未接又未有冗余備用。
8、干擾造成的故障:干擾造成的故障的事例也不少。系統(tǒng)的干擾信號(hào)可能來(lái)自于系統(tǒng)本身,也可能來(lái)自于外部環(huán)境。由于不同的系統(tǒng)對(duì)接地都有嚴(yán)格要求的規(guī)定,一旦接地電阻或接地方式達(dá)不到要求,就會(huì)使網(wǎng)絡(luò)通信的效率降低或增加誤碼的可能,輕則造成部分功能不正常,重則導(dǎo)致網(wǎng)絡(luò)癱瘓。
另外,電源質(zhì)量同樣影響系統(tǒng)的穩(wěn)定運(yùn)行。用于系統(tǒng)的電源既要保證電壓的穩(wěn)定,也要保證在一路電源故障時(shí),無(wú)擾切換至另一路電源,否則會(huì)對(duì)系統(tǒng)工作產(chǎn)生干擾。過(guò)程控制處理機(jī)主/備處理機(jī)之間的切換有時(shí)也會(huì)導(dǎo)致干擾。另外,大功率的無(wú)線(xiàn)電通信設(shè)備如手機(jī)、對(duì)講機(jī)等在工作時(shí),極易造成干擾,危及系統(tǒng)運(yùn)行。
Saint Gobain Furon IMP84UAF FEMALE UNION ADPT 1/2" T X 1/4"
Berührungsschutz muss DK 0,2, 9619043, 0570-2-6, 15752901/10/EMB
Swagelok SS-8BG-VCR-ID-18787, SS8BGVCRID18787, 1/2" VCR, Shipsameday AA15
Balluff BNS819002K1210010-A032, BNS-819-002-K12-100-10-A032 132773 1550AE
McDONNELL DOUGLAS PCB Board, 12464-A69G0739-1, PDI93-32, Shipsameday 1225Z4
McDONNELL DOUGLAS PCB Board, A69G0738-1, 12464-A69G0738-1 1225Z6
Philips Lumiled HPWT-BL00-D4000, HPWT-BL00-d37
COILCRAFT 1 ELEMENT, 0.33uH, GENERAL PURPOSE, 0805CS-820XJLC, Z26
Kemet T494D475K050AS, CAP TANT 4.7UF 50V 10%, 399-1792-1-ND V87
Swagelok Metering Bellows Sealed Valve 1/4", SS-4BMG-VCR, SHIPSAMEDAY1327C4
Swagelok Metering Bellows Sealed Valve 1/4", SS-4BMRW-VCR, SHIPSAMEDAY1327C3
Denki motor roller controller power supply, CB-016N6, SHIPSAMEDAY1539H4
SANKIE SPRING CONTACT PROBE, CP50-D-67-D6, 140700000055628, 1539C1
SANKIE SPRING CONTACT PROBE, CP20-D-17, 140700000055545, 1539C7
Samsung 419, K6X8008T2B-TF70, TLTC06CC, K6X8008T2BTF70, G30
UltraPointe A-STOP 001678-50BD, STEPPER MOTOR 26844-12, 000675T, 001002T 1168Z5
KEYENCE MINI CONTROLLER KV-16DT, KV16DT, SHIPSAMEDAY, W/2-3DAYSSHIPPING 1328P3
SemiFlow Mass Flow Controller 1/4" COMP, 14 SLPM, N2. SFC-2010
LOTOF 5085 NOVACAP CAPACITOR, CERAMIC MULTILAYER 0603N300J251PT SHIPSAMEDAYY134
UltraPointe 801-1002-01, 9652H03, 55050-00 & STEPPER MOTOR 26844-12 1168Z6
SWAGELOK Poppet Check Valve SS-8C-1, Missing 1 Front Ferrule1560Z5
SMC NCDPX2N25-600-A73, NCDPX2N25-600, D-A73 Ship Same Day 1650R
ABEX DENISON/BIMBA/MTI/CLIPPARD SR-0912-D, 2300001, 044-YG, 172-Q1, UDR-20-5
Malema Flow Sensor Rotary Meter, M-10000-S3031-10-001
ISI INSULATOR SEAL FEED THROUGH A DIV OF MDC VACUUM, 0984501
MDC VACUUM ANSI FLANGE BLANK CAP BOLT STYLE WITH CENTERING, NW250, 852004,
BOC Edwards ANGLE VALVE KF-25, PV25PKADBL-B
MKS ANGLE VALVE KF-40, SQUARE BODY LoPRO VALVE, LPV1-40-AK-CNVS
MKS 421 COLD CATHODE GAUGE MICRO-CONTROLLER
MKS 315 PIRANI MICRO CONTROLLER with SENSOR HEAD KF-25
UltraPointe 001346-1BCE, 0013461BCE, 001009 Rev A, TELTEC 02V, 2998, 1168Z7
UltraPointe 0051854-000, Z000000849, Shipsameday 1168Z8
Reliance Electric 413330-12AK, C-28764,13500-B680-6323-000, Shipsameday 1652BA
CALIFORNIA TURBO Fan With Baldor Electric Motor 1/4 HP, Model 18163PH,
MKS INLINE VALVE LOPRO NW25, LPV-25-IK-COVS, Shipsameday132H
ARO SILVERAIR SS07-NBB4-006, ShipSameDay 1651AS
Swagelok Alloy 400 Integral Bonnet Needle Valve 3/8", M-1VS6, SHIPSAMEDAY1326D2
Swagelok Male elbow 1/4" VCR x 1/4" npt, SS-4-VCR-2-4, SHIPSAMEDAY 1326D4
MULTICOMP Through Hole Resistor Metal Film, MCPRM0AWJP113B00 152Y
SMC E/P REGULATOR, ITV3050-04N4BL4, ITV3050-04N4N4, NITV3LL06, KT-ITV-F2,
BENDIX 2999010-51, 103-00005-12, 64375, CIA M83723/90Y8036 8738, 1551W
Sigmameltec PRESSURE SWITCH TYPE PS-21V, PS2IV, SHIPSAMEDAY125M
Led Bullet Mini Pendant, MDP C BNP & MDP B BZ & 4 Glass 051088
Programmable 180-24A1N032E2, 18024A1N032E2, Shipsameday1224H
MKS Mass Flow Controller 1/4" COMP, 10 SCCM, N2, 1258C-00010SVM 1535B1
ACROMAG AVME 947X VME DIGITAL INPUT/OUTPUT BOARDS, Shipsameday 1211K
WIMA SMDTC04220T200JQ00, SMD-PET
MKS MICRONODE I/O COMPACT NETWORKED, AS00128-01, REV 01 1305, MKS-CIT 1179L