NKST1110
NKST1110
NKST1110
变频器运行时对PLC干扰应注意的问题
变频器运行时会对周围电气设备(包括P L C )产生较强的电磁干扰,同时变频器主电路断路器等开关器件动作时也会影响PLC 的正常工作。为防止变频器运行时对PLC干扰,变频器与P L C 相连接时应该注意以下几点:
(1)对PLC 本身应按规定的接线标准和接地条件进行接地,而且应注意避免和变频器使用共同的接地线,且在接地时使二者尽可能分开。
(2)当电源电压波动大,谐波成分多时,为抑制谐波干扰,应在PLC 的电源模块及输入/ 输出模块的电源线上接入噪音滤波器或者隔离变压器。如果干扰仍严重,应考虑在变频器主回路中接入电抗器、变压器和噪音滤波器等措施。
(3)变频器和P L C 安装在同一电控柜时,应尽可能使与变频器有关的电缆和与PLC 有关的电缆分开安装,尤其是连接变频器的强电电缆与连接PLC 的弱电电缆更要分开安装。
4 结束语
变频器和P L C 间连接问题,涉及到数字量信号连接、模拟量信号连接以及避免干扰应注意的问题;在实际应用中,两者间的连接还涉及到用弱电信号控制强电的问题。因此,应引起重视,避免干扰造成变频器、PLC 的误动作;避免连接不当造成PLC 或变频器的损坏。
如果购买单位的在质保日期一年内发现有质量缺陷的,可以进行一个免费维修或更换。
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APPLIED MATERIALS 0020-24378 PLUG CHAMBER ADAPTER INTERFACE
APPLIED MATERIALS 0020-24403 SHIELD LIFTER HNGR P/H AT 5
APPLIED MATERIALS 0020-24406 RING,CLAMP,AL,/REFL
APPLIED MATERIALS 0020-24406 RING,CLAMP,AL,/REFL
APPLIED MATERIALS 0020-24418 WAFER, TEST T1 PASTE 6"
APPLIED MATERIALS 0020-24432 INSULATOR QUARTZ 8 INCH
APPLIED MATERIALS 0020-24453 SHIELD
APPLIED MATERIALS 0020-24453 SHIELD
APPLIED MATERIALS 0020-24456 INSULTR QTZ 6 JMF PCII EXT PAS @A
APPLIED MATERIALS 0020-24507 BRACKET
APPLIED MATERIALS 0020-24530 SHIELD, UPPER G12 SST
APPLIED MATERIALS 0020-24530 SHIELD, UPPER G12 SST
APPLIED MATERIALS 0020-24531 ADAPTOR, SHIELD G12 SST
APPLIED MATERIALS 0020-24531 ADAPTOR, SHIELD G12 SST
APPLIED MATERIALS 0020-24532 SHIELD LOWER
APPLIED MATERIALS 0020-24532 SHIELD LOWER
APPLIED MATERIALS 0020-24534 ADAPTER COH (AR) 13 FLT SRC - W/B
APPLIED MATERIALS 0020-24536 SHIELD, LOWER
APPLIED MATERIALS 0020-24542 CONNECTOR,BIAS RF ROD,300MM ULTIMA HDP
APPLIED MATERIALS 0020-24628 COVER
APPLIED MATERIALS 0020-24632 DOOT PANEL
APPLIED MATERIALS 0020-24642 BRACKET
APPLIED MATERIALS 0020-24719 COVER, RING, AL
APPLIED MATERIALS 0020-24722 SHADOW G3 TIN SEED RING
APPLIED MATERIALS 0020-24727 BRACKET
APPLIED MATERIALS 0020-24732 MIDCLAMP, TOP PNEUMATIC GAS BOX CVDT
APPLIED MATERIALS 0020-24735 PEDESTAL
APPLIED MATERIALS 0020-24735 PEDESTAL
APPLIED MATERIALS 0020-24736 SHIELD RF
APPLIED MATERIALS 0020-24736 SHIELD RF
APPLIED MATERIALS 0020-24737 PLATE
APPLIED MATERIALS 0020-24737 PLATE
APPLIED MATERIALS 0020-24742 QUARTZ INSULATOR (SER# PA-WCQ/445)
APPLIED MATERIALS 0020-24744 SHIELD
APPLIED MATERIALS 0020-24744 SHIELD
APPLIED MATERIALS 0020-24746 SHIELD, LOWER, AL
APPLIED MATERIALS 0020-24754 CLEAT SP CASS
APPLIED MATERIALS 0020-24771 COUPLER 4 BAR LINKAGE SHUTTER LINKAGE
APPLIED MATERIALS 0020-24781 SUPPORT ACTUATOR SHUTTER LINKAGE
APPLIED MATERIALS 0020-24782 STOP ACTUATOR SHUTTER LINKAGE
APPLIED MATERIALS 0020-24798 CAM LEFT CH OUTBOARD
APPLIED MATERIALS 0020-24798 CAM LEFT CH OUTBOARD
APPLIED MATERIALS 0020-24802 END PLATE/HOLE BEAM LONG HOIST
APPLIED MATERIALS 0020-24804 COVER RING,ENDURA HOT-E-CHUCK AL
APPLIED MATERIALS 0020-24804 COVER RING,ENDURA HOT-E-CHUCK AL
APPLIED MATERIALS 0020-24826 END PLATE BEAM SHORT -HOIST
APPLIED MATERIALS 0020-24828 END PLATE/HOLE BEAM LONG HOIST
APPLIED MATERIALS 0020-24862 CLAMP RING
APPLIED MATERIALS 0020-24862 CLAMP RING
APPLIED MATERIALS 0020-24866 SHIELD, LOWER 8"
APPLIED MATERIALS 0020-24866 SHIELD, LOWER 8"
APPLIED MATERIALS 0020-24913 PEDESTAL, 8"
APPLIED MATERIALS 0020-24913 PEDESTAL, 8"
APPLIED MATERIALS 0020-24914 COVER, 8" RING
APPLIED MATERIALS 0020-24914 COVER, 8" RING
APPLIED MATERIALS 0020-24994 AL DOOR SUPPORT STD PRECLEAN CH.
APPLIED MATERIALS 0020-25110 PA BRACKET
APPLIED MATERIALS 0020-25111 DOOR
APPLIED MATERIALS 0020-25114 BLANK OFF PANEL UPPER INTERFACE
APPLIED MATERIALS 0020-25121 SHIELD
APPLIED MATERIALS 0020-25227 ADAPTOR HTHCL LIFT
APPLIED MATERIALS 0020-25289 CLAMP RING 5 SMF AL/TI 4 FEET
APPLIED MATERIALS 0020-25304 CAP, HITHU 6 DESTER
APPLIED MATERIALS 0020-25304 CAP, HITHU 6 DESTER
APPLIED MATERIALS 0020-25313 FLANGE UPPER BELLOWS N2 COH TIN
APPLIED MATERIALS 0020-25389 BRACKET SENSOR 26 WFR CASS
APPLIED MATERIALS 0020-25454 PLATE, 8IN COHERENT 1.50:1 5/8
APPLIED MATERIALS 0020-25551 BRACKET
APPLIED MATERIALS 0020-25563 CHUCK 150MM
APPLIED MATERIALS 0020-25622 FLANGE, 300MM HEATER CLAMP
APPLIED MATERIALS 0020-25640 LOWER SHIELD
APPLIED MATERIALS 0020-25662 CLAMP SHIELD SCREWLESS 13 SRC
APPLIED MATERIALS 0020-25666 SHIELD SCRWLESS 101 COH TIN 8 WAFER
APPLIED MATERIALS 0020-25666 SHIELD SCRWLESS 101 COH TIN 8 WAFER
APPLIED MATERIALS 0020-25670 SHIELD
APPLIED MATERIALS 0020-25672 CLAMP RING & LOWER SHIELD
APPLIED MATERIALS 0020-25679 FLAG LOWER MOTOR LIFT EXT
APPLIED MATERIALS 0020-25680 CLAMP RING
APPLIED MATERIALS 0020-25713 CLAMP RING 6 INCH
APPLIED MATERIALS 0020-25731 ADAPTOR CLAMP SHIELD DBC KNEE TIN 101
APPLIED MATERIALS 0020-25766 ROBOT BLADE 8, 5500 X PER
APPLIED MATERIALS 0020-25800 SHIELD, UPPER
APPLIED MATERIALS 0020-25864 CLAMP RING 5 TIN SMF 4 PADS W/B SHUTTER
APPLIED MATERIALS 0020-25874 CLAMP RING & LOWER SHIELD
APPLIED MATERIALS 0020-25917 H_ISOLATOR DC BIAS SHUTTER
APPLIED MATERIALS 0020-25920 SHIELD, LOWER 8" B12 SST
APPLIED MATERIALS 0020-25931 CLAMP RING 6 IN
APPLIED MATERIALS 0020-25953 BRACKET
APPLIED MATERIALS 0020-26004 GUIDE
APPLIED MATERIALS 0020-26020 BLOCK MOUNTING AERA FC780C MFC
APPLIED MATERIALS 0020-26020 BLOCK MOUNTING AERA FC780C MFC
APPLIED MATERIALS 0020-26094 OBS, COVER, DC SOURCE CONNECTOR, 300MM P
APPLIED MATERIALS 0020-26099 RING
APPLIED MATERIALS 0020-26106 CLAMP RING (TI)
APPLIED MATERIALS 0020-26112 CLAMP RING 8 HOT SNNF ALUMINUM
APPLIED MATERIALS 0020-26117 CLAMP RING 5 INCH
APPLIED MATERIALS 0020-26139 PLUG W/B LOADLOCK ENDURA INTERFACE
APPLIED MATERIALS 0020-26216 SHIELD (95-1)
APPLIED MATERIALS 0020-26217 COVER RING 6" TI
APPLIED MATERIALS 0020-26228 PEDESTAL
APPLIED MATERIALS 0020-26262 CLAMP RING 6" SMP AL
APPLIED MATERIALS 0020-26289 SHIELD LOWER 101 TTN
APPLIED MATERIALS 0020-26289 SHIELD LOWER 101 TTN
APPLIED MATERIALS 0020-26310 SHIELD, LWR, 6-IN, CLAMPED
APPLIED MATERIALS 0020-26319 INSULATOR LIGHT LID
APPLIED MATERIALS 0020-26321 INSULATOR MAGNETIC SWITCH LIGHT LID
APPLIED MATERIALS 0020-26365 NUT PLATE HEATER ACPWR BOX HTESC
APPLIED MATERIALS 0020-26396 COVER RING
APPLIED MATERIALS 0020-26403 RING COVER 6" HTESC ALUM
APPLIED MATERIALS 0020-26439 RING
APPLIED MATERIALS 0020-26485 MOUNTING BRACKET
APPLIED MATERIALS 0020-26487 COVER PLASTIC GFI SENSOR&CB SYS AC
APPLIED MATERIALS 0020-26588 SHIELD, LOWER T/TIN
APPLIED MATERIALS 0020-26601 DISK,SHUTTER,SS
APPLIED MATERIALS 0020-26603 SHIELD COLLIMATOR UPPER 8
APPLIED MATERIALS 0020-26610 CLAMP RING
APPLIED MATERIALS 0020-26820 CLAMP RING 8" AL
APPLIED MATERIALS 0020-26824 HUB DC BIAS 8 HTHU SHIELD
APPLIED MATERIALS 0020-26836 SHIELD UPPER SCRLS 101 COH 1:1 TIN 8
APPLIED MATERIALS 0020-26847 6 CLAMPING
APPLIED MATERIALS 0020-26851 WAFER BLOCK
APPLIED MATERIALS 0020-26852 COVER RING AND ADAPTER
APPLIED MATERIALS 0020-26853 ADAPTER
APPLIED MATERIALS 0020-26854 ADAPTER
APPLIED MATERIALS 0020-26863 SHIELD MIDDLE
APPLIED MATERIALS 0020-26864 INNER SHIELD
APPLIED MATERIALS 0020-26865 UPPER SHIELD (SIDE FLOW)
APPLIED MATERIALS 0020-26866 UPPER SHIELD (DOWNFLOW)
APPLIED MATERIALS 0020-26899 HALF PLATE
APPLIED MATERIALS 0020-26906 SHIELD 6" LOW KNEE
APPLIED MATERIALS 0020-26926 N2 BLANKOFF
APPLIED MATERIALS 0020-26967 PC II GAS TRENCH COVER
APPLIED MATERIALS 0020-26980 CLAMP AI-SI-CU
APPLIED MATERIALS 0020-26981 CLAMP RING
APPLIED MATERIALS 0020-26987 FIXTURE ABT CALIBRATION
APPLIED MATERIALS 0020-27021 PLATE, TEXTURING FIXTURE
APPLIED MATERIALS 0020-27094 SHIELD, LOWER 6"
APPLIED MATERIALS 0020-27099 SHIELD, UPPER, SCREWLESS, 8"
APPLIED MATERIALS 0020-27123 PEDESTAL PLATE
APPLIED MATERIALS 0020-27124 PEDESTAL, PCII 6" JMF/SMF @ C&
APPLIED MATERIALS 0020-27160 SHIELD, BOWL
APPLIED MATERIALS 0020-27163 CLAMP PADDED 6"MOSI
APPLIED MATERIALS 0020-27168 BRACKET, WATER, RETURN, 300MM TICL4 TI M
APPLIED MATERIALS 0020-27191 CLAMP RING
APPLIED MATERIALS 0020-27205 CLAMP RING (WSI)
APPLIED MATERIALS 0020-27300 CLAMP BLOCK, AXIOM
APPLIED MATERIALS 0020-27472 PLATE MTG DRIVE MOTOR 5000 MC ROBOT
APPLIED MATERIALS 0020-27472 PLATE MTG DRIVE MOTOR 5000 MC ROBOT
APPLIED MATERIALS 0020-27594 PANEL,CH A & B BLANK OFF, LNK
APPLIED MATERIALS 0020-27644 LOWER SHIELD
APPLIED MATERIALS 0020-27737 PLATE
APPLIED MATERIALS 0020-27738 CLAMP RING, 5 SMF, SST, 3.048 MM 10445
APPLIED MATERIALS 0020-27741 RING,CLAMP,PADDED
APPLIED MATERIALS 0020-27827 METAL RING
APPLIED MATERIALS 0020-27834 REAR PLATE, Q2 EXTRACTION
APPLIED MATERIALS 0020-27842 PEDESTAL 8" PINLESS
APPLIED MATERIALS 0020-27842 PEDESTAL 8" PINLESS
APPLIED MATERIALS 0020-27863 SHIELD LOWER
APPLIED MATERIALS 0020-27865 PEDESTAL
APPLIED MATERIALS 0020-27942 BRACKET CABLE VHP COVER LIFT
APPLIED MATERIALS 0020-27942 BRACKET CABLE VHP COVER LIFT
APPLIED MATERIALS 0020-28043 SHIELD, LOW KNEE AL CLAMPED (TI)
APPLIED MATERIALS 0020-28110 CLAMP RING, SMF, 1.8MM, NON-MILLED
APPLIED MATERIALS 0020-28110 CLAMP RING, SMF, 1.8MM, NON-MILLED
APPLIED MATERIALS 0020-28190 SCREW CLAMP RING TEXTURING FI
APPLIED MATERIALS 0020-28251 SHIELD
APPLIED MATERIALS 0020-28256 ROBOT BLADE 8
APPLIED MATERIALS 0020-28315 SENSOR BRACKET SHUTTER ENCLOSURE
APPLIED MATERIALS 0020-28315 SENSOR BRACKET SHUTTER ENCLOSURE
APPLIED MATERIALS 0020-28352 BRACKET CROY LINE MODIFIED
APPLIED MATERIALS 0020-28367 SHIELD, 6-IN HTHU AL/TI
APPLIED MATERIALS 0020-28367 SHIELD, 6-IN HTHU AL/TI
APPLIED MATERIALS 0020-28393 BRACKET MOUNTING QUAD CRYO LI
APPLIED MATERIALS 0020-28445 METAL RING
APPLIED MATERIALS 0020-28445 METAL RING
APPLIED MATERIALS 0020-28446 METAL RING
APPLIED MATERIALS 0020-28446 METAL RING
APPLIED MATERIALS 0020-28447 METAL RING
APPLIED MATERIALS 0020-28449 SHIELD,LOWER 8" G-12 CLAMP FLAME SP
APPLIED MATERIALS 0020-28460 STOP, 300MM HEATER LIFT
APPLIED MATERIALS 0020-28460 STOP, 300MM HEATER LIFT