描述
由信號(hào)引入的干擾會(huì)引起I/O信號(hào)工作異常和測量精度大大降低,嚴(yán)重時(shí)將引起元器件損傷。對(duì)于隔離性能差的系統(tǒng),還將導(dǎo)致信號(hào)間互相干擾,引起共地系統(tǒng)總線回流,造成邏輯數(shù)據(jù)變化、誤動(dòng)和死機(jī)。PLC控制系統(tǒng)因信號(hào)引入干擾造成I/O模件損壞數(shù)相當(dāng)嚴(yán)重,由此引起系統(tǒng)故障的情況也很多。
第三類是來自接地系統(tǒng)混亂的干擾。接地是提高電子設(shè)備電磁兼容性(EMC)的有效手段之一,正確的接地既能抑制電磁干擾的影響,又能抑制設(shè)備向外發(fā)出干擾;而錯(cuò)誤的接地反而會(huì)引入嚴(yán)重的干擾信號(hào),使PLC系統(tǒng)無法正常工作。PLC控制系統(tǒng)的地線包括系統(tǒng)地、屏蔽地、交流地和保護(hù)地等,接地系統(tǒng)混亂對(duì)PLC系統(tǒng)的干擾主要是各個(gè)接地點(diǎn)電位分布不均,不同接地點(diǎn)間存在地電位差,引起地環(huán)路電流,影響系統(tǒng)正常工作。例如電纜屏蔽層必須一點(diǎn)接地,如果電纜屏蔽層兩端A、B都接地,就存在地電位差,有電流流過屏蔽層。當(dāng)發(fā)生異常狀態(tài)如雷擊時(shí),地線電流將更大。
產(chǎn)品廣泛應(yīng)用于:電力、石油、礦井提升、港口、供熱、燃?xì)?、供水、污水處理、冶金、造紙、紡織、化工、水利等現(xiàn)代化工業(yè)領(lǐng)域!
我們這里有您急需的停產(chǎn)備件,
優(yōu)勢現(xiàn)貨,詢不到的,買不到的,請(qǐng)聯(lián)系我們!
絕 對(duì)優(yōu)勢,絕 對(duì)低價(jià)!絕 對(duì)正品,優(yōu)質(zhì)的產(chǎn)品,一流的服務(wù),充足的庫存,
歡迎來電詢價(jià),我們將會(huì)給您最優(yōu)惠的價(jià)格!
主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
ALLEN BRADLEY 1336-MOD-KB005 DYNAMIC BRAKE
Allen Bradley 50HP 460V Board Cat#1336-BDB-SP18D Used
Allen Bradley 50HP 460V Board Cat#1336-BDB-SP18D Used
ALLEN BRADLEY 1336-BDB-SP4C NSPP 1336BDBSP4C
ALLEN BRADLEY 1336-MOD-KB010 BRAKE 1336MODKB010
ALLEN BRADLEY 1336 FORCE DRIVE,1336T-B007-AX-6?T2EN-L6
ALLEN BRADLEY 1336-MOD-KB010 DYNAMIC BRAKE SER.D
ALLEN BRADLEY VARIABLE FREQUENCY CONTROLLER 1336
Allen Bradley 1336 PLUS AC Drive User’s Manual
Allen-Bradley 1336 Plus II Digital AC Drive,mo
Allen Bradley 1336-MOD-L3&120711 PC Board#13398
ALLEN BRADLEY 1336-SCR-SP11A
ALLEN BRADLEY 1336-MOD-KB005 DYNAMIC BRAKE
ALLEN BRADLEY 1336-LA3
Allen Bradley Dynamic Brake NEW#1336-MOD-KB050 Ser D
Allen Bradley 1336 Troubleshooting Guide,Parts Manual
ALLEN BRADLEY 1336-MOD-KB005 DYNAMIC BRAKE
ALLEN BRADLEY 1336-BDB-SP74D NSPP 1336BDBSP74D
ALLEN BRADLEY 1336-BDB-SP1 NSPP 1336BDBSP1
ALLEN BRADLEY 1336-BDB-SP18A NSPP 1336BDBSP18A
ALLEN BRADLEY 1336-BDB-SP3D FNFP 1336BDBSP3D
ALLEN BRADLEY 1336-BDB-SP55C NSPP 1336BDBSP55C
ALLEN BRADLEY 1336-BDB-SP18D NSPP 1336BDBSP18D
ALLEN BRADLEY 1336-BDB-SP57D NSPP 1336BDBSP57D
ALLEN BRADLEY 1336-151135 POWER SUPPLY**NIB**
ALLEN BRADLEY DYNAMIC BRAKE CAT#1336-MOD-KB101
ALLEN BRADLEY 1336-QOUT-SP25A NSFP 1336QOUTSP25A
ALLEN BRADLEY CAPACITOR 1336-CAP-SP11A**NEW**
ALLEN BRADLEY 1336-PB-SP2B POWER BOARD*XLNT*
ALLEN BRADLEY 1336-MOD-L3 LOGIC INTERFACE BOARD AC
ALLEN BRADLEY 1336-B007-EOD-L?1 NSPP 1336B007EODL1
ALLEN BRADLEY 1336-140311 NSPP 1336140311
ALLEN BRADLEY 1336-151135 NSFP 1336151135
ALLEN BRADLEY 1336-151142 NSFP 1336151142
ALLEN BRADLEY 1336-151143 NSFP 1336151143
ALLEN BRADLEY 1336-151143 NSPP 1336151143
ALLEN BRADLEY 1336-B050-EAG-L?3 USPP 1336B050EAGL3
ALLEN BRADLEY 1336-MOD-E1 NSFP 1336MODE1
ALLEN BRADLEY 1336-MOD-G2 NSFP 1336MODG2
ALLEN BRADLEY 1336-MOD-L3 USPP 1336MODL3
ALLEN BRADLEY 1336-RFB-16-A NSFP 1336RFB16A
ALLEN BRADLEY 1336-MOD-KB010 NSFP 1336MODKB010
Allen Bradley 1336-MOD-L2 24C Interface Option
Allen Bradley 1336-C015-ECE SER.A 19KVA 1336-MOD-L3
Allen Bradley 1336-MOD-G2 Remote I/O Adapter NEW
Allen Bradley 1336-MOD-G2 Remote I/O Adapter NEW
ALLEN BRADLEY 1336-QOUT-SP18A NSFP 1336QOUTSP18A
ALLEN BRADLEY CAPACITOR 1336-CAP-SP11A**NEW**
ALLEN BRADLEY 25 HP AC DRIVE 1336-B025-EOF-L?3-S1
ALLEN BRADLEY 1336-B025-EOF-F?A2-L3 NSPP 1336B025EOFFA2L
ALLEN BRADLEY 1336-MOD-KB005 DYNAMIC BRAKE NEW
ALLEN BRADLEY 1336-MOD-G1 BCD SERIAL INTERFACE
ALLEN BRADLEY AB VFD#1336-B015-EAE-?L3
ALLEN BRADLEY 1336-B020-ECE-F?A2 NSPP 1336B020ECEFA2
DRIVE 380/415/460V 34AMP 50/60HZ 20HP W/ENCLOSURE
ALLEN BRADLEY 1336-WB110 Dynamic Brake Module
ALLEN BRADLEY 1336-B100-EAH-L?3 USPP 1336B100EAHL3
ALLEN BRADLEY 1336-L5 24 VAC/DC(LESS ENCODER)**NNB**
Allen Bradley 1336-PB-SP23A Renewal Part 1336PBSP23A
ALLEN BRADLEY 10 HP AC VFD DRIVE 1336-B010P-EJDP
ALLEN BRADLEY 1336-B005-EAD-F?A2-S1 NSFP 1336B005EADFA
ALLEN BRADLEY 1336-B005-EAD-F?A2-S1 NSPP 1336B005EADFA
ALLEN BRADLEY 1336-MOD-N1 NEW IN FACTORY BOX
ALLEN BRADLEY 1336-MOD-KA010 NEW IN BOX
ALLEN BRADLEY 1336-B075-EAH-F?A2-L3 USPP 1336B075EAHFA2L
ALLEN BRADLEY 1336-B075-EAH-F?A2-L3-S1 USPP 1336B075EAHF
ALLEN BRADLEY 1336-B075-EOH-F?A2-L3-S1 USPP 1336B075EOHF
ALLEN BRADLEY 1336-L9E DRIVE ACCESSORY 1336L9E
ALLEN BRADLEY FUSE BUS 1336-F1-SP6A FOR 200HP DRIVE
ALLEN BRADLEY 1336-B030S-ECF-?L1 ADJUSTABLE AC DRIVE NEW
Allen-Bradley Gate Driver Board 1336-BDB-SP3C NEW
ALLEN BRADLEY 1336-B003-ECD-F?C3-L1 AC DRIVE 3HP NEW
ALLEN BRADLEY AC DRIVE 1336-B005-EAD-L?3**NICE**
ALLEN BRADLEY BRAKING CHOPPER 1336-WB035*NEW*
Allen Bradley 1336-MOD-KB005 Dynamic Brake New
ALLEN BRADLEY 1336-BDB-SP34A GATE DRIVE BOARD 125HP
Allen-Bradley Precharge SCR Board 1336-135254 NEW
ALLEN BRADLEY#1336-L5 NEW IN THE FACTORY BOX
ALLEN BRADLEY RENEWAL PARTS 1336-CAP-SP11A*NEW*
ALLEN BRADLEY 1336-B010 AC DRIVE 1336B010ECDFC3L?3
ALLEN BRADLEY 1336-B015 AC DRIVE 1336B015EAEL3S1
ALLEN BRADLEY 1336-SCR-SP8A 1336 RENEWAL PARTS 575V
ALLEN BRADLEY 1336-SCR-SP8A 1336 RENEWAL PARTS 575V
Allen Bradley Dynamic Brake 1336#E0837300
Allen Bradley 1336 Power supply board 20HP 151136
Allen-Bradley 1336-MOD-KB005 Ser.D Dynamic Brake NNB
ALLEN-BRADLEY 1336-L6 115VAC Control Interface!WOW!
Allen-Bradley 1336 Plus AC Drive Controller 1336S(1924
Allen-Bradley 1336 Plus AC Drive Controller 1336S(1925
Allen Bradley AC Drive 161S-AA 07NPU Series B 2 hp
1336F-BRF20-AA-?EN-HAS2-L6 Allen Bradley AC Drive
ALLEN-BRADLEY 1305-BA01A 0.5HP 380-480VAC AC DRIVE
ALLEN-BRADLEY 1336S-BRF75-AN-?EN AC DRIVE USED**
ALLEN BRADLEY 1336S-BRF100-AA?-EN 10HP AC DRIVE
Allen-Bradley-DIRECT DRIVE AC RELAY 600V 700-PK200A1
Allen Bradley Ultra AC Drive 1398-DDM-009X-D?N
ALLEN BRADLEY POWERFLEX 70 AC DRIVE 20A E 1P7 A0 AYN
Allen Bradley 1336 Plus II 50HP AC Drive-1336F 50 HP
1336-B003-EAD-F?A2-L1 Allen Bradley AC motor Drive
Allen-Bradley,Powerflex 70 AC Drive,2HP ND,480VAC
Allen-Bradley 1391-DES45-DI 1391DES45DI AC servo Drive
Allen Bradley 1336S-BRF05-AE-?EN4-HAB-L5E AC Drive
A22105-134-19 Allen Bradley AC Drive Cable
ALLEN BRADLEY AC Motor Drive 160-AA02NSF1.5 HP Ser B
ALLEN BRADLEY 1336 VT-B015-EAN-FA2-L1 3PH AC DRIVE
ALLEN BRADLEY 1336S-BRF100-AA?-EN5-L6 10HP AC DRIVE
Allen Bradley Adjustable Frequency AC Drive
Allen Bradley 1305 Adjustable Frequency AC Drive
Allen Bradley 1333-AAA Adjustable AC Drive NIB
ALLEN BRADLEY 50 HP AC VFD DRIVE 20BB130A5ANNADA?0
Allen Bradley Adjustable Frequency AC Drive
Allen Bradley 1305 1305-BA06A Ser:C 3HP VFD AC Drive
ALLEN BRADLEY 2 HP AC VFD DRIVE 1336S-BRF20-AA-?EN4-L6
Allen Bradley Ultra AC Drive 1398-DDM-009X-D?N
ALLEN BRADLEY 160-BA03NPS1 AC DRIVE SER C FRN 7.06 NEW
ALLEN BRADLEY 5 HP VFD AC DRIVE 1336-B005-EAD
ALLEN BRADLEY 1 HP VFD AC DRIVE 1336S-BRF10-AN-?EN
2098-IPD-HV030 Allen-Bradley Ultra5000 HV AC Drive
230/460V!In Great Shape!Super Clean&Tested!
ALLEN BRADLEY 1305 1305-BA02A AC Drive w/Pro.Terminal
ALLEN BRADLEY 10 HP VFD AC DRIVE 575 1336-C010-EAD-S?I
ALLEN BRADLEY 1336F-BRF10 AC DRIVE
Allen Bradley AC Drive 1305-BA04A 2 HP Used
Allen Bradley PowerFlex 70 AC Motor Drive w/Keypad
Allen Bradley AB 1333 CAB-D Adj Freq AC Motor Drive
Allen Bradley Adjustable Frequency AC Motor Drive 3 PH
ALLEN BRADLEY 1336 PLUS II ADJUSTABLE AC DRIVE
ALLEN BRADLEY DIGITAL AC SERVO DRIVE 1391-DES15-DI-A?QB
ALLEN BRADLEY AC DRIVE PRESET SPEED 160-BA06NPS1 3HP
ALLEN BRADLEY 1305-BA02A VFD AC DRIVE 0.75 HP SER A
ALLEN-BRADELY A2-0.55KW NEW IN BOX**AC MOTOR DRIVE
AB Allen Bradley 1336 B005 FA2 AC Drive 460V New
AB Allen Bradley Adjustable Frequency AC Drive 1333 AAA
Allen Bradley Power Flex 4 22A-D2P3N104 AC Drive 1 HP
ALLEN-BRADLEY AC Motor Drive,20 HP,1336E-B020 NEW
Allen Bradley AC Drive 1336F-BRF100-AN?-EN-HAS2-L5
Allen Bradley 1305-BA02-HAP AC Drive.75 HP 460V
ALLEN BRADLEY 1305-BA03A 1 HP AC DRIVE SPEED CONTROL
ALLEN BRADLEY 1305-BA01A-HA2 AC DRIVE UNIT
Allen Bradley AB AC Drive 1334-BJB 1333BJB 3PH 460V 3HP