产品质量决定企业的未来,我们不生产PLC,我们只是全新原装的搬运工.
【140AMM09000】
【140AMM09000】
影响PLC控制系统的干扰源与一般影响工业控制设备的干扰源一样,大都
产生在电流或电压剧烈变化的部位,这些电荷剧烈移动的部位就是噪声源,
即干扰源。
干扰类型通常按干扰产生的原因、噪声干扰模式和噪声的波形性质的
不同划分。其中:按噪声产生的原因不同,分为放电噪声、浪涌噪声、高
频振荡噪声等;按噪声的波形、性质不同,分为持续噪声、偶发噪声等;
按噪声干扰模式不同,分为共模干扰和差模干扰。共模干扰和差模干扰是
一种比较常用的分类方法。共模干扰是信号对地的电位差,主要由电网串
入、地电位差及空间电磁辐射在信号线上感应的共态(同方向)电压迭加
所形成。共模电压有时较大,特别是采用隔离性能差的配电器供电室,变
送器输出信号的共模电压普遍较高,有的可高达130V以上。共模电压通过
不对称电路可转换成差模电压,直接影响测控信号,造成元器件损坏(这
就是一些系统I/O模件损坏率较高的主要原因),这种共模干扰可为直流、
亦可为交流。差模干扰是指作用于信号两极间的干扰电压,主要由空间电
磁场在信号间耦合感应及由不平衡电路转换共模干扰所形成的电压,这种
让直接叠加在信号上,直接影响测量与控制精度。
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★厦门岳航计算机工程有限公司
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KEYENCE OPERATOR INTERFACE PANEL 4 3/4" SCREEN VT-5SB
HITACHI SEIKI CNC CONTROL BOARD HDCD 10-37-00-01
HAUSER BOARD 03-LPB-REG-SVC-?1268
SCHNEIDER AUTOMATION PROCESSOR MODULE TSX-P57-202
HAUSER BOARD 03-LPB-OBS-SVC-?2265
HAUSER BOARD 03-LPB-UES-SVC-?2258
ADEPT FIB BOARD C1000-0890210-0?0
BALLUFF TRANSDUCER CARD BTA-E10-0508-E
CINCINNATI MILACRON CRT MODULE 3-531-3973A/C
ACCUWEB CONTROL BOARD CTL 4000-02E CTL400002E
SIEMENS SIMATIC S7 DP/DP COUPLER 6ES7 158-0AD01-0XA0
ALLEN-BRADLEY PROCESSOR MODULE 1785-LT B 1785LTB
OCTAGON SYSTEMS SINGLE BOARD COMPUTER 6012 CPU
PHOENIX INTERBUS IBS PLC5 DSC/I-T 27 19 02 7
OMRON HANDHELD PROGRAMMER CVM1-PRO01-V1
OMRON PROCESSOR CONTROLLER C200HG-CU63
OMRON PROCESSOR CONTROLLER C200HG-CU63 & C200HW-COM01
HAUSER BOARD 02160108/2
HAUSER BOARD 03-LPB-TRP-SVC-?0829
OMRON CPU INTERFACE C200HS-CPU03 C200HSCPU03
BETA TECH SPINDLE MODULE BC-FSC-072-001/?BC-NULL-011-001
CUTLER-HAMMER RELAY OUTPUT MODULE D520TC2
MITSUBISHI MELSEC PLC MINI.masterMODULE A1S-J71PT32-S3
HEIDENHAIN ENCODER INTERFACE UNIT EXE 702 B
ANYBUS PROFIBUS DP SLAVE INTERFACEAB4005?-C
SIEMENS ANALOG OUTPUT MODULE 6ES7 332-7ND02-0AB0
ROFIN SINAR LASER SIEMENS LASER PCB MODULE 154-0396
NR&D INTERBUS SmasterIBSM+PLUS
KOYO PROGRAMMABLE CONTROLLER TJ-32NTI
FELLER ENGINEERING PC BOARD AF121
FELLER ENGINEERING PC BOARD AF020
FELLER ENGINEERING PC BOARD AF124
FELLER ENGINEERING PC BOARD AF090
PERCEPTRON BOARD 495-0102-01
MOOG DIGITAL MOTOR CONTROLLER 164E-005
CINCINNATI MILACRON FEEDRATE MODULE 3-531-3912A
CUTLER-HAMMER DC LOGIC INPUT MODULE D520RL1
ORMEC BOARD ORN-DSP-A2/2A REV 1.1A
HAUSER BOARD 03-LPB-TRP-PDM-?3741
LABOD BOARD TU 20.1
HAUSER BOARD 03-LPB-TRP-SVN-?2638-N2
INDRAMAT INTERBUS GATEWAY MODULE RMG12.2-NN
MITSUBISHI MELSEC ANALOG OUTPUT MODULE A62-DA
MITSUBISHI MELSEC PLC CPU UNIT A1S-HCPU
SCHNEIDER AUTOMATIONmasterMODULE INTERBUS TSX-IBY-100
SUTRON ELECTRONICS BOARD TSR 1.5
SUTRON ELECTRONICS BOARD 10088 1
AUTOMATION DIRECT ANALOG OUTPUT MODULE F4-16DA-1
BLACK BOX KVM EXTENDER WITH USB ACU4001A
OCTAGON SYSTEMS CPU CARD SBS-2300
OMRON RACK BASE UNIT CV500-BC031
DATRICON BOARD 015537C
GIDDINGS & LEWIS SEVEN SLOT RACK BACKPLANE 503-18009-01
GIDDINGS & LEWIS TEN SLOT RACK BACKPLANE 503-18010-01
GIDDINGS & LEWIS THIRTEEN SLOT RACK BACKPLANE 503-18011...
ROFIN SINAR LASER SIEMENS PC BOARD 412-2L 221312
ROFIN SINAR LASER SIEMENS PCB MODULE 223528
ROFIN SINAR LASER SIEMENS PCB MODULE 324-2L 223531
ROFIN SINAR LASER SIEMENS PCB MODULE 406-2L 221306
ROFIN SINAR LASER SIEMENS PCB MODULE 909-2B 220648
ROFIN SINAR LASER SIEMENS PCB MODULE L940-2 220659
SBS TECHNOLOGIES 6U VME CARRIER CARD VIPC616
MITSUBISHI 8 SLOT RACK A1S38HB
ALLEN BRADLEY 4- SLOT RACK 1746-A4 SER B
PARKER FLUIDPOWER INTERFACE BOARD EW10-104D/3 EW10104D3
TURCK BUS STOP MULTIPORT CDN-IM-4-0001
SONY GAUGING PROBE DL330B
OMRON 24V DIGITAL CONTROLLER E5AK-AA2B
SUTRON ELECTRONICS BOARD TSR-4SG
MODICON AGE GOULD 5V TTL INPUT TH MODULE AS-B829-016 AS...
MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER A0JCCPU
LABOD BOARD INOU 2.2 791025
MITSUBISHI MELSEC COMMUNICATION MODULE NET3422
MITSUBISHI MELSEC PLC CPU UNIT A1S-CPU
LABOD BOARD MIP51
OMEGA ANALOG BOARD DPF700-A DPF700A
BECKHOFF 4X INPUT FOR THERMOELEMENTS WITH WIRE BREAKAGE...
SIEMENS SIMATIC INPUT MODULE 6ES5420-4UA14 6ES54204UA14
SIEMENS POWER SUPPLY MODULE 6EP1 436-3BA00
BANNER MINI-SCREEN DUAL CONTROLLER GMMDSDINT-1T2
CONTROL TECHNOLOGY OUTPUT MODULE 901C 2590
OMRON RACK BASE UNIT CV500-BI062
OPTO 22 MISTIC CONTROLLER PROCESSOR UNIT MODEL 200
TOYODA 8 SLOT BASE MODULE THR-2766
TURCK MULTIBOX VBM160-PX17-0.3?M-RSM126/CS1083?0
ALLEN BRADLEY VISION PLATFORM MODULE 2801-AM2
KEYENCEmasterUNIT CONTROLLER KL-N20A
ALLEN BRADLEY SMART SPEED DRIVE 160-BA06NPS1P1 SER C
LABOD BOARD M-SI02 REV C
LABOD BOARD UPAR11 830789
PHOENIX CONTACT TERMINAL BLOCK IBS ST 24 BK-LK
LABOD BOARD MIP52
LABOD BOARD EE-EX 1.1
MITSUBISHI MELSEC POSITIONING MODULE AD71-S2
CONTROL TECHNOLOGY ISOLATED ANALOG INPUT 901B 2550
HITACHI PLC LWP800