HGX-0572896.a

HGX-0572896.a

HGX-0572896.a

HGX-0572896.a

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。

150-F251NBD数量2   42573

TPC070TD-B  1合

AB6916-C-203   10个

WAGO:750-504  2

234-4HE32-0XB0  1

板卡   ARND-4065B     2

VXZ242FZ2AXB 个 3

VQ5301R-51，DC24V 个 2

A75-22-00*380-400V 50Hz/400-415V 60Hz    2个

5D3A1121P010 ARND-3119A数量2

TBU810    1

IK9173   1 提供订货号 0049350

P642218A1M0048J  ---------------------

压力变送器ETM-B01SAA1-05  2

PALL   HH9021A12DPSWD      1

魏德米勒   DRM270110L  8教110V      5

米斯特主令控制器  MST-33  FN  18  AK VR  IPZ        2

HA-LP11K1MB   1个

IK9173   1 提供订货号 0049350

ACS550-01-08A8-4+N7511+J404   1

FR-E720-0.2K   63

FR-A7NC   63

QJ71E71-100   3

Q312B   3

Q61P   3

QJ61BT11N   6

Q13UDVCPU   3

QJ71GP21-SX   3

QJ71GP21S-SX   3

AJ65SBTB1-32D   6

AJ65SBTB1-32DT   3

AJ65VBTCE3-32D   12

AJ65VBTCE32-32DT   51

A6CON-L5P   12

A6CON-PW5P   12

A6CON-TR11   3

IK-FCKLK8-4p-0.75kw   1

压力变送器ETM-B01SAA1-05    2个

25473-2 004    1个

5D3A1121PO1O ARND-3119A     1

CEMS取样泵

1. OMRON  RFID系统读写器  V680S-HMD63-EIP，38个；

2. OMRON，V680-D1KP54T ，38个；

3. OMRON EtherNet 通信线缆  XS5W-T421-GMC-K，38个

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VLSI STANDARD 65-00182 SHIELD,CERAMIC CONTACT/RT

VLSI STANDARD 65-00187 AXLE, INCONEL E/G 6" .500

VLSI STANDARD 65-00189 BLOCK,CERAMIC

VLSI STANDARD 880A STANDARD FAC 6881 ALPHA STEP

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VLSI STANDARD ACS6-0.152C CONTAMINATION STANDARD ABSOLUTE

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VLSI STANDARD ACS8-0.152C STANDARD,152,TARGET,9000

VLSI STANDARD ACS8-0.496C WAFER,CALIBRATION

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VLSI STANDARD ASC-0.364CSPI WAFER CALIBRATION SF6200

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VLSI STANDARD FTS-5-250 WAFER, CALIBRATION 250A

VLSI STANDARD FTS-5-4000 WAFER, CALIBRATION 4000A

VLSI STANDARD FTS-5-6750 WAFER, CALIBRATION 6750A

VLSI STANDARD FTS-5-9400 WAFER, CALIBRATION 9400A

VLSI STANDARD RS3-0.1 WAFER, CALIBRATION 2566-017

VLSI STANDARD RS3-0.9 WAFER, CALIBRATION 2925-005

VLSI STANDARD SCS-1402 WAFER, CALIBRATION 500A

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WAHL INSTRUMENTS 443-071C TP, 71-82-93-104C

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WATLOW 40901-052664 T/C PROBE

WATLOW 50800512 SS RELAY

WATLOW 66472-01 CHILL PLATE

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WATLOW PT100 TEMPERATURE SWITCH

WATLOW Q32-480-62 SCR, QPAC, 480V, 3 PHASE

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WATLOW YSW-200-9708 HEATER BLANKET 120V 85W

WATLOW YSW-200-9807 HEATER,#2,JACKET,TUNNEL

WATLOW YSW-200-9808 HEATER,#1,JACKET,TUNNEL

WATLOW YSW-200-99806 HEATER #1 JACKET TUNNEL

WATTS 0103182 REGULATOR, PRESSURE 10-125, 1/8"

WATTS 0103187 REGULATOR, PRESSURE 3-50, 1/4"

WATTS 0103200 REGULATOR, PRESSURE 10-125, 3/8"

WATTS 0296237 VALVE, PRESSURE REDUCER 25-75, 1/2"

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WATTS F602-03BJ-M5 FILTER

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WATTS R10-04CSS REGULATOR, PRESSURE, N2

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WESCO CE15CNS3TB CONTACTOR 25A RES 12A IND 3 POLE 24VCOIL SIZE C

WESCO CE15DN3AB CONTACTOR

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WESCO P110-55W3A/6043 PRESSURE SWITCH 5A 250VAC 50PSI

WESCO P110-55W3A/6438 SWITCH

WESCO P110-55W3A/6438 SWITCH

WESCO P110-85W3A/6047 PRESSURE SWITCH

WESCO P110-85W3A/6048 PRESSURE SWITCH

WESCO SP129-51W2B-X/1264 PRESSURE SWITCH

WEST COAST 1015980-04 PEDESTAL,LG NEST

WEST COAST 1016672-00 PLATE, GAS DIFFUSER TOP QUARTZ

WEST COAST 1016736 MANDELA,BOTTOM GROOVE

WEST COAST 1021509-00 COLLAR INSULATION CAST

WESTCOR 20-10002 POWER SUPPLY, 18V

WESTCOR 20-10002 POWER SUPPLY, 18V

WESTCOR 97921255 PWR SUP ASSY TP4 (MODEL#MP5-51012-RL)

WESTCOR M15V/10AFL CART VISOR PW SUPPLY VALVE V8-6

WESTECH 010C0090 BACKING POLISH PAD

WESTECH 0150-105218 MOTOR, SLURRY PMP 106:1 185RPM

WESTECH 0150-105218 MOTOR, SLURRY PMP 106:1 185RPM

WESTECH 372-36128 PCB, STEPPER MOTOR CONTROLLER

WESTECH 372-36128 PCB, STEPPER MOTOR CONTROLLER

WESTECH 372-37063 PCB, AT COMPUTER

WESTECH 372-4508-1 SEAL

WESTECH 372M-36191 ASSY,NOISE,SUPPRESSION,M

WESTERN SERVO DESIGN 10026-100 MOTOR, AMP, ALL EXP, ELE AXIS

WESTERN SERVO DESIGN 10026-100 MOTOR, AMP, ALL EXP, ELE AXIS

WESTERN SERVO DESIGN LDH-S1-3 AMP BOARD

WESTERN SERVO DESIGN PDU-S1-4/4.5-VA2 CONTROLLER ASSY

WHITEY 133SR VALVE AIR, OP SST NC 3/4

WHITEY 135SR VALVE AIR, OP SST 2-WAY 3/4 NPT

WHITEY 304L-HDF4-300 CYLINDER

WHITEY SS-43YF2 VALVE, BALL, 4-WAY

WHITMAN CONTROLS J205G-5S-C12L PRESSURE SWITCH HP/LSP

WHITMAN CONTROLS J205G-5S-C12L-X ASSY PRESSURE SWITCH

WHITMAN CONTROLS J205V-1S-C12L VACUUM SWITCH HP/LSP

WHITMAN CONTROLS W117G-10H-K52L24-X PRESSURE SWITCH, 30 PSIG DECR

WHITSON 4200-060G-F04-B06-A TRANSDUCER  PRESSURE  0-60 PSI  1/2 IN

WHITSON 4200-60-G-F06-B-A TRANSDUCER  PRESSURE  0-60 PSI  3/4 IN

WHITSON 8210C33 VALVE 2-WAY CHILLER ASCO

WHITSON 8210G2 VALVE BRS SOLENOID 24V DC

WHITSON 8211C34 VALVE 125PSI O2 120VAC SOLENOID

WHITSON GTC-6 PARGRIP T-CONNECTOR

WHITSON GTC-8 PARGRIP T-CONNECTOR

WILKERSON MTP-95-549 FILTER COALESCING

WILKERSON MTP-95-551 FILTER ELEMENT

WJ 081008-000 SCREW, S/S SLOTTED 10-32 1/2" LONG

WJ 081030-000 SCREW 6-32 X 1/4", PANHEAD SLOTTED CAD. PLATED

WJ 081050-000 SCREW

WJ 081450-000 THERMOCOUPLE TYPE K INC. SHEATH (GORDON)

WJ 081634-000 FITTING PLASTIC ADAPTER 1/4 MPTX

WJ 081635-000 FIT, PLSTC, BARB, ADPTR, 1/8

WJ 082158-000 WASHER,(FLAT) 1/4

WJ 082159-000 WASHER LOCK INT STAR SS #10

WJ 082244000 FLOWMETER MODEL F 150

WJ 082406-000 NUT HEX 3.5

WJ 083060-000 PICKUP MAG 5-15VDC TTL

WJ 083219-000 VALVE, BALL, 4WAY, SS, 43Y, FZ

WJ 083219-000 VALVE, BALL, 4WAY, SS, 43Y, FZ

WJ 083230-000 POWER SUPPLY 230 VAC

WJ 083232-000 PHOTOHELIC GAUGE

WJ 083307-000 SWITCH MOM SPDT PCB 1A

WJ 083377-000 VALVE

WJ 083496-000 MODULE POWER FAILURE

WJ 083527-000 O-RING, SILICON 364

WJ 083532-000 FITTING PLUMBING SS CONNECTOR MALE

WJ 083631-000 SELF SEAL SCREW (10-32)

WJ 083784-000 I/O MDL DC IN 4 CHANNEL WHT

WJ 083785-000 INDICATOR

WJ 083890-000 THERMOCOUPLE KK 3/16 XO

WJ 083911-000 I/O MODULE (OPTO 22-MOUNTING RACK)

WJ 083913-00 POWER SUPPLY +/-15,12,VDC

WJ 083933-000 TEFLON BLANK FOR HF BOTTLE

WJ 083937-000 FLOMTR, N2/AIR, 0-60, 2-PSI

WJ 084225-000 SCREW,CS 6-32 1/4 CWJ

WJ 084278-000 FLOWMETER

WJ 084355-000 CIRCUIT BREAKER, 10A 1-POLE

WJ 084491-000 AMPLIFIER INLINE

WJ 084522-000 VALVE, BELLOWS, PNEUMATIC

WJ 084522-000 VALVE, BELLOWS, PNEUMATIC

WJ 084660-000 FITTING VCR SS .25" PLUG

WJ 084731-000 PCB (I/O CARD 5K0758)

WJ 084752-000 PIN ROLL SS 1/8 ID X 7/16" L

WJ 084786-000 CONTROLLER STEPPER MOTOR

WJ 084965000 TRANSFORMER 208:120/240V 7.5KV

WJ 084968-000 WASHER LOCK

WJ 085009-000 SET SCREW (ALLEN) 4-40 X 3/8" LONG

WJ 085052-000 CAP POLY 10UF 370V

WJ 085071-000 ADAPTER HEX VALVE BALL

WJ 085121-000 CIRCUIT BREAKER, 2P, 6A, 26CB

WJ 085180-000 STRIP, HEATER, 1200W, 240V

WJ 085180-000 STRIP, HEATER, 1200W, 240V

WJ 085284000 FLOMTR H2O

WJ 085289-000 SWITCH,FLOW,SS,H2O,1-5GPM

WJ 085439-000 TUBE, TEFLON, CONVOLUTED, 1" X 21"L