140CPU65150億佳保量
主要由系統(tǒng)內(nèi)部元器件及電路間的相互電磁輻射產(chǎn)生，如邏輯電路相互輻射及其對模擬電路的影響，模擬地與邏輯地的相互影響及元器件間的相互不匹配使用等。這都屬于PLC制造廠對系統(tǒng)內(nèi)部進(jìn)行電磁兼容設(shè)計的內(nèi)容，比較復(fù)雜，作為應(yīng)用部門是無法改變，可不多考慮，但要選擇具有較多應(yīng)用實績或經(jīng)過考驗的系統(tǒng)。


三、PLC控制系統(tǒng)工程應(yīng)用的抗干擾設(shè)計


為了保證系統(tǒng)在工業(yè)電磁環(huán)境中免受或減少內(nèi)外電磁干擾，從設(shè)計階段開始便采取三個方面措施：干擾源；切斷或衰減電磁干擾的傳播途徑；提高裝置和系統(tǒng)的抗干擾能力。這三點就是電磁干擾的基本原則。


PLC控制系統(tǒng)的抗干擾是一個系統(tǒng)工程，要求制造單位設(shè)計生產(chǎn)出具有較強抗干擾能力的產(chǎn)品，且有賴于使用部門在工程設(shè)計、安裝施工和運行維護(hù)中予以考慮，并結(jié)合具有情況進(jìn)行綜合設(shè)計，才能保證系統(tǒng)的電磁兼容性和運行可靠性。進(jìn)行具體工程的抗干擾設(shè)計時，應(yīng)主要以下兩個方面。

Fluke 5610-6-D Probe, Thermistor 1/8 in. x 6 in. SST
Fluke 5610-6-J Probe, Thermistor 1/8 in. x 6 in. SST
Fluke 5610-6-L Probe, Thermistor 1/8 in. x 6 in. SST
Fluke 5610-6-M Probe, Thermistor 1/8 in. x 6 in. SST
Fluke 5610-9-D Probe, Thermistor 1/8 in. x 9 in. SST
Fluke 5610-9-J Probe, Thermistor 1/8 in. x 9 in. SST
FOGEL DOUBLE DOOR SPLASH WORK TOP COOLER REFRIGERATOR MADE IN THE USA
FOGEL SINGLE DOOR SPLASH WORK TOP COOLER REFRIGERATOR MADE IN THE USA SST-27
FOGEL WIDE DOUBLE DOOR SPLASH WORK TOP COOLER REFRIGERATOR MADE IN THE USA
Food Dehydrator 10 Trays Jerky Fruit Commercial Grade Stainless Steel Dryer 600W
Foxboro B0123JA Pipe Flange Slip On 316 SST 150lb 4" ID x 9" OD
FOXBORO I/A VORTEX FLOWMETER 83F-D01S1STTNA CF8M 316 SST 1"
FPE HS3B300 600 V 3000 AMP Power Shield SST LSIG INSULATED CASE CIRCUIT BREAKER
Free Chose 20 PACK Densply Dental Endo K-Reamer Root Cannal Hand Files SSt
FTG, TBG Adapter NW40 X 1/4MVCR 1.4"LG SST, 3300-02577
FUJI ELECTRIC ST-A-B-120-60S    STAB12060S
FUJI ELECTRIC STA-D-DC24-100S    STADDC24100S
FUJI ELECTRIC ST-C-B-AC100-60S    STCBAC10060S
FUJI ELECTRIC ST-C-B-AC110-60S    STCBAC11060S
FUJI ELECTRIC STF-AC100-127V-60S    STFAC100127V60
FUJI ELECTRIC ST5P21S        ST5P21S
FUJI ELECTRIC ST5P21S    ST5P21S
FUJI ELECTRIC ST5P-2-AC100-5S    ST5P2AC1005S
Fuji SST 2.0             frameset 52 cm
FUJIKIN FUBFN-71-6.35-DFZ Pneumatic 1/2" VCR Diaphragm Air Valve SST No. 006148
Fujikin SST Valve Manifold [3 Valve]
G&L Goulds Pump SST 1-1/4x2x8 Impeller Dia 6-5/16 Cat# 7ST57535V 1=1/4" Outlet
G&L GOULDS SST 4ST37535 7 1/2 HP 208-230/460 3450 RPM H CENTRIFUGAL PUMP
G&L GOULDS SST 75TK1 PUMP W/ BALDOR UMM3713T 15 HORSE POWER MOTOR *MAKE OFFER*
G118246 Thermcraft Tube Furnace SST & 3-Zone Controller Max Temp 2204°F / 1200°C
GarrettCom Inc. 14EHR-SST-24VDC Hardened Twisted-Pair Ethernet -          
Gate Valve 1" NPT Female Type 316 SST, Mc-master Carr 4741K25, Lot Of 5 #122B
GE 183A7860-1 Impeller Key 3/4" x 4-1/2" SST Lot of 2
GE 731X21G409 TYPE SST-3 PULSE TOTALIZER 120V-AC COUNTER D514218
GE AK-2-75-3 600V 3000A 166A4526-37 SST L/I/G AIR CIRCUIT BREAKER
GE AKR-5A-100 POWER CIRCUIT BREAKER 4000 AMP TRIP TYPE SST LS AUX SWITCH SB12
GE AKRT-5A-50H 600V 2000A AK28567 SST L/S/G AIR CIRCUIT BREAKER
GE SST trip unit
GE Type SST Solid State Trip Unit, 568B604G4,          
GEMS 817354 MINI-BM-SS-T2-S3-S3-B11-CC, 12"
GENERAL EASTERN SST-1 with Enclosure
GENERAL ELECTRIC 16SB1FB3C82SST4P        16SB1FB3C82SST4P
GENERAL ELECTRIC 568B604G15 , SOLID STATE TRIP DEVICE TYPE SST
GENERAL ELECTRIC 568B604G31 , SOLID STATE TRIP DEVICE TYPE SST
GENERAL ELECTRIC 568B604G70 Solid State Trip Device Type SST
GENERAL ELECTRIC GE 568B604G14 SOLID STATE SST TRIP UNIT CIRCUIT BREAKER B481034
GENERAL ELECTRIC SOLID STATE TRIP DEVICE (SST) LI 343L692G14
GENERAL ELECTRIC SOLID STATE TRIP DEVICE (SST) LS 343L692G13
GENERAL ELECTRIC SWITCH 16SB1ED5A30SST16R           IN BOX
GENERAL ELECTRIC TYPE SST 568B604G8
GENERIC 40B19-1-SST    40B191SST
Genuine Hobart Parts- Service Kit, SST, 115V 00-475811
Gland Screw Cap 108-0011-016 SST
GLOBAL MANUFACTURING SST-16    SST16
GOOD             AS-I MASTER SST-ASI-SLC PLC MODULE (DR2E)
Gorman Rupp 13614 1706H M346550 Impeller Shaft SST
Gorman Rupp Part No. 42111-927, 2527-17070 COV PLT SST
Gould Pressure Transmitter PA 3000 -050-12-12-XX-XX, Range 0-50 PSIA SST
GOULDS 1ST1D5D4 G +L SERIES SST Pump, Straight Center Discharge, 3/4HP, h          
GOULDS 33LS15 SUBMERSIBLE PUMP 1,5hp PUMP ONLY SST HIGH CAPACITY
GOULDS END SUCTION SIDE DISCHARGE 1.5"x2"-6" PUMP IN 316SS - MODEL# SST
GOULDS PUMPS MODEL SST SIZE 2X21/2X6 CENTRIFUGAL PUMP 6STK2 STAINLESS STEEL
Goulds sst Impeller 6.6" Diameter 7/8" shaft           # 150783407
GRACO 124398 SD Automatic Shut-off SST DEF Nozzle without Swivel, 3/4" BSPP(f)
GRACO 125078 LD Blue Manual DEF Nozzle with SST Spout
Graco 189439 Seat Piston SSt
GRACO 24F524 3/4" BSPP(m) x 3/4" BSPP(f) SST Swivel for DEF
GRACO 24F529 SD Automatic Shut-off SST DEF Nozzle with Swivel, 3/4" BSPP(f)
GRACO 24H293 SDI15 Meter Kit with Fittings for SST Auto Nozle