產(chǎn)品詳情
在選擇設(shè)備時(shí),首先要選擇有較高抗干擾能力的產(chǎn)品,其包括了電磁兼容性(EMC),尤其是抗外部干擾能力,如采用浮地技術(shù)、隔離性能好的PLC系統(tǒng);其次還應(yīng)了解生產(chǎn)廠給出的抗干擾指標(biāo),如共模擬制比、差模擬制比,耐壓能力、允許在多大電場(chǎng)強(qiáng)度和多高頻率的磁場(chǎng)強(qiáng)度環(huán)境中工作;另外是靠考查其在類似工作中的應(yīng)用實(shí)績(jī)。在選擇國(guó)外進(jìn)口產(chǎn)品要注意:我國(guó)是采用220V高內(nèi)阻電網(wǎng)制式,而歐美地區(qū)是110V低內(nèi)阻電網(wǎng)。由于我國(guó)電網(wǎng)內(nèi)阻大,零點(diǎn)電位漂移大,地電位變化大,工業(yè)企業(yè)現(xiàn)場(chǎng)的電磁干擾至少要比歐美地區(qū)高4倍以上,對(duì)系統(tǒng)抗干擾性能要求更高,在國(guó)外能正常工作的PLC產(chǎn)品在國(guó)內(nèi)工業(yè)就不一定能可靠運(yùn)行,這就要在采用國(guó)外產(chǎn)品時(shí),按我國(guó)的標(biāo)準(zhǔn)(GB/T13926)合理選擇。
2綜合抗干擾設(shè)計(jì)
主要考慮來(lái)自系統(tǒng)外部的幾種如果措施。主要內(nèi)容包括:對(duì)PLC系統(tǒng)及外引線進(jìn)行屏蔽以防空間輻射電磁干擾;對(duì)外引線進(jìn)行隔離、濾波,特別是原理動(dòng)力電纜,分層布置,以防通過外引線引入傳導(dǎo)電磁干擾;正確設(shè)計(jì)接地點(diǎn)和接地裝置,完善接地系統(tǒng)。另外還必須利用軟件手段,進(jìn)一步提高系統(tǒng)的安全可靠性。
Applied Materials AMAT Tubing Connector, 3300-06654
Applied Materials AMAT Flow Restrictor, 3300-08546
Applied Materials-AMAT Bushing, Ceramic Vectra IMP
Applied Materials AMAT SW Photohelic, 1270-00505
Applied Materials AMAT Vacuum Sensor, 1400-01298
Applied Materials AMAT Purge Tree Assembly, 0010-04669
NEW APPLIED MATERIALS AMAT 3870-02260 VALVE ADAPTOR
Applied Materials AMAT Opal Flow Indicator, 230880330
AMAT APPLIED MATERIALS CHAMBER EXHAUST POCKET SHIELD
Applied Materials AMAT Ground Fault Relay, 0680-01738
Applied Materials AMAT Pressure Transducer, 1350-00296
Applied Materials/AMAT Lower Tin Shield PN: 0020-22292
Applied Materials AMAT Hubbel Connector, 3300-00167
Applied Materials AMAT Plug,Throttle Valve 0020-09622
Applied Materials AMAT Manifold Assembly, 0010-07322
Applied Materials AMAT PP Manifold Assembly, 0010-77185
Applied Materials AMAT Amplifier NPN-Out, 0540-00012
Applied Materials System Electronics PCB 0100-20001
Applied Materials AMAT Manometer Connection, 0040-00267
Applied Materials AMAT Pressure Transducer, 0090-03273
Applied Materials AMAT Pressure Transducer, 0015-02123
Applied Materials AMAT N2 Purge Manifold, 0190-12164
Applied Materials Producer Faceplate 0021-03637 AMAT
NEW APPLIED MATERIALS AMAT 4020-00010 FLTR BREATHER
Applied Materials AMAT Kit Main AC Trip Unit 0242-75001
Applied Materials AMAT Pirani Gauge, 3310-00073
Applied Materials AMAT Pressure Gauge, 3310-01240
Applied Materials AMAT VAT 15028-FA24-1002?, 0190-02238
Applied Materials AMAT Pressure Transducer, 1350-00255
Affinity Chiller Applied Materials AMAT CWA100KMP21CBD2
Applied Materials AMAT 1/4" VCR Valve, 3870-01745
Applied Materials AMAT Pressure Transducer, 0190-02103
Applied Materials Cover Ring 300MM 0021-16783 NEW
Applied Materials AMAT 0020-00249 Slit Sapphire
NEW APPLIED MATERIALS AMAT 3880-01026 WSHR LKG SPLI
NEW APPLIED MATERIALS 0140-77286 CABLE, D3 IO, HARNESS
NEW APPLIED MATERIALS 0140-77288 CABLE, D5 IO, HARNESS
Applied Materials AMAT Cover Plate Exhaust 0020-37817
Applied Materials AMAT VCR Check Valve, 3870-03399
Applied Materials-AMAT Insulator, RCPT, Rigid support
Applied Materials AMAT IR Halogen Lamp, 1010-00237
NEW APPLIED MATERIALS 0242-10277 SMG SPARE PARTS KIT
NEW APPLIED MATERIALS 0270-76174 FLOW RACK SHELF 24X24
APPLIED MATERIALS PCB, SIGNAL CONDITION, ASSEMBLY
Applied Materials AMAT Motor Drive Assy, 0190-09731
Applied Materials AMAT Tungsten Halogen Lamp 1010-01531
Applied Materials AMAT Ball Bearing 0190-00763 (Qty 2)
Applied Materials AMAT Circuit Breaker, 0680-00608
Applied Materials AMAT 0020-09374 Large Face Seal
Applied Materials AMAT Microwave Assy, 3750-01130
Applied Materials-AMAT Plate, Retainer, Vectra IMP
NEW APPLIED MATERIALS AMAT 3880-01009 WSHR FLAT .68
NEW APPLIED MATERIALS AMAT 0720-01293 CONN PIN LIVE
Applied Materials AMAT RF Shielding, qyt=47, 3320-01086
APPLIED MATERIALS 0200-09347A, AMAT COLLAR 150MM FLAT
AMAT APPLIED MATERIALS 0021-25014 DISK SHUTTER BESC PIN
0020-25917 Applied Materials IMP 0200-20375 0200-20376
Applied Materials AMAT Pressure Gauge Assy, 3310-01249
NEW APPLIED MATERIALS AMAT 0720-01471 CONN HSG CAP
NEW APPLIED MATERIALS AMAT 3690-01075 SCR CAP SKT
Applied Materials AMAT VCR Adaptor Elbow, 0040-20056
Applied materials AMAT Strap Capacitor 0020-09083
NEW APPLIED MATERIALS AMAT 330-01183 TFG TBG CPL
AMAT 0020-05384 BESC Shutter Disk Applied Materials
AMAT Applied Materials P5000 Mark II CVD Reactor 200mm
NEW APPLIED MATERIALS AMAT 0225-30760 MANIFOLD VAC LLC
Applied Materials AMAT 0020-97794 Spacer Blade 100-150
Applied Materials TGV Throttled Gate Valve Monitor AMAT
NEW APPLIED MATERIALS AMAT 0690-01038 HINGED CLAMP NW40
APPLIED MATERIALS INC.QUARTZ SHILED 125mm
3870-01244 Applied Materials AMAT ISO NorCal Valve
Applied Materials AMAT 0010-70131 Position 5 8" Chamber
Applied Materials Cover Ring 300MM 0021-16783 NEW
AMAT APPLIED MATERIALS 0010-20098 CHASSIS ASSY
NEW Applied Materials/AMAT Shield Bowl PN: 0020-27160
Applied Materials AMAT RF Shield, Qty = 10, 3320-01103
Applied Materials AMAT Valve Weldment, 0190-22506
NEW Applied Materials/AMAT Shield Bowl PN: 0020-29347
Applied Materials AMAT Modified Bellows, 0050-42620
Applied Materials AMAT ION/TC AC Module 8300M 0010-0001
Applied Materials-AMAT Connector, BAR RF FT1
AMAT Applied Materials RPSC Applicator 0010-02146
Applied Materials AMAT 0140-05986 Harness Assy
AMAT Applied Materials Network Module 9090-00491
AMAT Applied Materials Coated Reflector AQ-12
Applied Materials AMAT 650247 Lid Flange 0010-15222
AMAT Applied Materials AC Window Assembly 0240-00598
AMAT Applied Materials Anti-Cloud Assembly 0090-00044
NEW APPLIED MATERIALS AMAT 0090-00494 SW, ASSY, PRES
Applied Materials AMAT VCR Adaptor, 0015-09325
NEW APPLIED MATERIALS ROLLER BARTEMP BEARING 3060-90059
Applied Materials AMAT RF Shield, Qty = 10, 3320-01102
Applied Materials AMAT RF Shield, 62 feet, 3320-01060
NovaScan 420 Nova Applied Materials AMAT NOVA 840
NEW APPLIED MATERIALS CABLE PORT SERVER 0140-77615
Applied Materials AMAT 950812 Monitor Plug Assy
Applied Materials AMAT 3710-01095 Shaft HSG Roller Assy
NEW APPLIED MATERIALS AMAT 0150-02207 POWER CABLE
Applied Materials AMAT RF Elbow, 0720-07925
Applied Materials AMAT RF Connector, 0720-03402
Applied Materials AMAT 0200-00811 Window Recessed
Applied Materials AMAT Schumacher Ampoule, 3250-01091
Applied Materials AMAT Valve Manifold, 0050-26967
Applied Materials AMAT RF Shield, 142 feet, 3320-01033
APPLIED MATERIALS (AMAT) HTR ASSY WXZ P/N 0010-03331M
Applied Materials AMAT Valve Manifold, 0050-30838
APPLIED MATERIALS HEATER THROTTLE VALVE 1410-01345
APPLIED MATERIALS SEAL CTR RING ASSY 3700-01626 (LOT-4)
APPLIED MATERIALS CONTACTOR INTERLOCK 0100-37868
NEW APPLIED MATERIALS CABLE HARNESS ASSY 0140-03462
APPLIED MATERIALS CONTACTOR INTERLOCK 0100-37868
NEW APPLIED MATERIALS AMAT 3320-01163 GSKT VCR 1/4"
NEW AMAT APPLIED MATERIALS GAS DISTRIBUTION PLATE, 133