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Faiveley 33.92.7202
Faiveley 33.92.7202
Faiveley 33.92.7202
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1 引言
PLC由于具有功能强、程序设计简介,维护方便等优点,特别是高可靠性、较强的适应恶劣工业环境的能力,已被广泛应用于自来水行业。但由于现场环境条件恶劣、湿度高、以及各种工业电磁、辐射干扰等,会影响系统的正常工作,因此重视工程的抗干扰设计。
水厂应用中的PLC所受的干扰源主要有电源系统引入的干扰、接地系统引入的干扰和输入输出电路引入的干扰三类。如果PLC的干扰问题解决得不好,系统将无法可靠运行,将会影响到正常供水。因此,有必要对PLC应用系统中的干扰问题进行探讨。主要本文分别讨论PLC的三种抗干扰技术。
MATSUSHITA AGN20024 10111H 24V
STAFFORD 2L108HD 1-1/2 2 PIECE
BROWNING Q1 1 11/16
BROWNING P1 1 TAPER
CUSTOM CYLINDERS INC MT11212DAR 31001198 AIR
GOODYEAR 390H100 05351739 100 19106 1 WIDE
BANDO POWER KING C-90
GATES B78 V80 HI-POWER
INFINEON S 240A 50V S240A 100NA TO-218AA
HISCO CL.1.5 0-1MPa
SMC AR2000 0.02~0.2MPa
LCR COMPONENTS MR2/440 2uF +/- 10% 440VAC 50/60Hz
RHP BEARING 634-2ZYCCN
MARTIN BUSHING 3020 3 11/64
ZETTLER AZ2150-1A-48D
PANASONIC HL1-HP-DC24V-F
HP HP2-DC24V 10A30VDC 10A 1/3HP 250VAC
GOODYEAR BX81 TORQUE-FLEX COGGED
SMC AR30K-02H-N AR30K02HN 0.05~0.85MPa
BURNDY Aluminum One Hole Lug Compress Conct, 500 mcm, YA34A1
POTTER & BRUMFIELD KHC17D11 24V
CARLISLE 3VX600
TCM 0390781ASCW-BX
NTE R22-1D16-24
20 NAPA BALKAMP RADIAL PATCHES 710-1050
Steiner 02290
DAYCO 3VX670 CHEKMATE POWER-WEDGE
NO NAME ANSI100-1
GENERAL ELECTRIC DKM 21.V 250W
FERRAZ SHAWMUT Q076650 2,5 URGS 17/16 250VAC 16A
GOODYEAR BX42 TORQUE-FLEX COGGED V-BELT
BROWNING BX81
BROWNING H3/8 H 3/8 H-3/8
BROWNING H1/2 H 1/2 H-1/2
BROWNING SDS 1 3/8 5/16
MRC 87008 176L
NICE 1616DCTNTG18 201407
TIMKEN LM11910 ROLLER
Parker PS95001P
HOOVER BEARING 73L03 5/8
R&I SEAL KIT BC-2-SK
ASHCROFT 45W1000 H 02L 4.5 0-225 psi 1/4
Goodyear A72 HY-T plus V-Belt 1/2x 74 4L740
Allen-Bradley SIZE 2 L.H. Overload Relay X-37886 NIB
WILKERSON FRP-96-653 5M
BIMBA FQP-4 FQP4 3/8 TUBE 1/4 NPT
BALDOR / DODGE 1610 1-1/4
ZETTLER AZ2850-2A-24DE
SANKEN STR9015 4.0A 30V
Johnson Controls Replacement Disc for 2-1/2 Seat V-4710-610 17-3-82
KLOCKNER MOELLER CONTACTOR PKZM-1 1-1.6AMPS 1-1.6 AMPS
SCHRACK V23061-B1010-A401
Johnson Controls Replacement Disc 7902 17-123-29 for 3/4 Seat V3011-601
OMRON G5D-22423T-US
LITTELFUSE 815.800C 815 SERIES 800 / 600 AMP
POWERSONIC PS-SC 1.2V SC-1500MAH
PANASONIC JW2SN-DC6Y AJW7210 5A
Burndy Terminal, 4/0 U34RT/U31ART, U34RT
Siemens Original Diazed 4A 500V 4Amp
PICKER PC435-1C-24S-X 10A/125VAC 5A/250VAC
SHINDENGEN ELECTRIC D4LA20