Allen Bradley 1791D-16V0 /A
Allen Bradley 1791D-16V0 /A
Allen Bradley 1791D-16V0 /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。
贝加莱模块8AC122.60-2,2只
ATV71HU40N4 4
DD-90/110数量1
MMC-PC-ANALOG 1
ISS-V03B 5个
FRN2.2E1S-4C 2
WES2345-09400 1
S42024-L5469-A2-3 2
SGM7J-A5AFA21 5
VAMP221 2
X3301S4N23Y2数量1
DET-TRONICS/GT3000-GTS数量2
BHH-520/N/X1EMERSON 数量4
AUTROSAFEBH-520/EX数量2
DGBL-B-24-150C 10
G0549A-240-050 10
RET24VDC5R 1PDT 20
RET24VDC5R 2PDT 10
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WES2345-09400 1
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Q35SB 2
Q61SP 2
Q03UDVCPU
QX42
QY41P
QJ71GF11-T2 2
GT2505-VTBD 2
TGX-760E11AAAGNND6 1
E5DC-QX2DSM-822 8
PS4-201-MM1 1
LE4-116-DD1 2
Ni2-G08K-AP6X 2
MOD1002-Lite 1
FRN0007E2S-4C 1
D4A-4501N 24
G6B-4BND DC24 5
NX-SID800 12
NX-SOD400 3
G3NB-240B-1 DC5V-24V BY 0MZ/C 50
FENA-01 1
6ES7 313-6CF04-0AB0 西门子 数量2
313-6CF03-0AB0
20BC030A0AYNANC0 面价:29041 1
A5E37110169 1
A5E37110177 2
WinCC| 6AV6371-2BG07-4AX0 1
变频器/ACS530-01-169A-4/ABB/90KW 台 1
800T-U24 1808 3台
140XBP00400C 面价:3546 2
VJCNS101199,Vijeo Citect 点完整版 2
TSXDMZ64DTK 2
140CPS12420 面价:10015 2
C98043-A7004-L1 1
IC755SUE15CTD 2
6AV7260-4JM41-1XX5 1
6AV7260-1GD31-0XX5 1
6SL3 760-0DA00-0AA0 2
A5E30771774 3
193-6BP00-0DA0 12
6ES7 654-6CL00-3GF0 2
6GK5 992-2SA00-8AA0 15
型号ATV630D37N4 IP55 37KW/50HP
型号ATV71HU75N4Z 7.5KW - 10HP
6ES7675-1DK30-7AB0 2个
1440-VDRS06-06RH 19面价16356
6AV3607-1JC30-0AX1 5
6AV6542-0DA10-0AX0 1
6ES7031-2EP85-0AA0 1
A06B-1410-B150 数量 :1
FENA-11 24
MVI56E-SIE 1
A5E00171403 6个
231-7PB22-0XA0 2
2093-AC05-MP2??? 面价14577 1
2093-AM02 面价12430? 1??????
2093-AM01???面价11865????1
2093-AMP2 面价10949.7 1
ABE7CPA412???4?
551-1AB00-0AB0 3
231-4HA30-0XB0 4
ACS355-01E0-09A8-2 1
ACS355-01E-09A8-2
1VCF339750R8909 1
PVR24F/11 R909890143 1块
6ES7141-1BF12-0XB0 2
6ES7142-1BD40-0XA0 2
416761G-3 13
ACS1013-A3-R0-00-SQ02-100A-0C10-0000-00000-EN 1
Tenney Environmental Temperature Test Chamber Cooling Boost VersaTenn III
Tenney Jr
Tenney TJR
Tenney TR40
Teradyne 1800 Incircuit Test System ICT with
Teradyne D10 Driver detector Card M890-02 from CASS tester 859-740-02
Teradyne D7 Channel Card M872 859-605-00
Teradyne ICT 1880 Z1880 1880-2 Z1890 1890 Incircuit
Teradyne ICT 1880 Z1880 1890 1888 Incircuit Test System
Teradyne J973 Back Plane Module 950-984-01 Rev A Printed Circuit Board
Teradyne J973 BackPlane PCB#-950-983-130 Revision A Printed Circuit Board
Teradyne Low Pass Filter Calibration Field Kit Flex
TERADYNE MODEL A 360 Z ANALOG LSI TEST SYSTEM 23
Teradyne Ultra Flex Test System
Terahertz Technologies FTE-7500 /155/157/159/161CWDM OTDR
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TERAOKA TPB-1770-2 USPP TPB17702
Terasaki AR212 1250A Electric Air Circuit Breaker
TERMA OPOS Portable CW-RADAR 10.490GHz 250 mW 24 VDC
Termomag WEG DWA1600S breaker protector relay interrupter
TERRA UNIVERSAL INC 4320-00 USPP 432000
Terrell Gear Reducer KW6-00009 Ratio 1:1 Multi pump mount
TESA MODUL 372 Digital Display Unit + 403 Module
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Tescom TC-3000A Bluetooth Tester
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Test & Certify MM 850/1310 Gigabit Fiber 90D
Test & Certify MM 850nm 1300nm Fiber 90
Test & Certify SM 1310nm 1550nm Fiber 90
Test Equity Model 1027S Temperature Chamber
Test Gold, Silver, Platinum, Paladuim etc...
TEST SET, RADAR - AN/UPM 137A - SERIAL NO: B219
Test Set, Transponder Set TS-2681/APM-239A
Test SM MM 850/1300nm 1310/1550nm Power Meter 90DWrnty
Test Soil for Metals & Contaminant Patterns 90D Wrnty
TEST STAND FOR ION TUBE CALIBRATION
TESTED Siemens S7-300 CPU314 6ES73145AE100AB0 6ES7 314-5AE10-0AB0 IFM
Tested 2M
TESTED ALLEN BRADLEY 1756-L62S SERIES B GUARDLOGIX PROCESSOR 5562S 11171205700
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TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF13 EA2 _ K366426302003
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF13 EA2 _ K366491702001
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EA2 _ K366350302002
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EA2 _ K366426302002
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EA2 _ K366426302004
Tested Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EB2 _ K366240303001
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EB2 _ K366350303002
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EB2 _ K366426303001
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EB2 _ K366426303002
TESTED Siemens Permanent Magnet Servo Motor 1FT6064 6AF713 EB2 _ U840276201001
Tested & Calibrated (08/15/13) with 30-
Tested & Calibrated w/ 30 &
TESTED AND , Guaranteed non-DOA
TESTED AND -1 YR -FACTORY DEMO
Tested and calibrated with 90
TESTED AND CALIBRATED WITH 90
TESTED AND CALIBRATED- WITH 90
TESTED AND CALIBRATED WITH HARD CASE INCLUDED
TESTED AND CALIBRATED-30
Tested and complete with 30
Tested and Guaranteed Functional FRESH CALIBRATION
Tested and Guaranteed Functional w/ ROR
TESTED AND WORKS TESTED AND WORKS
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Tested, calibrated, and complete with 30
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TESTER KIT, OPTICAL LOSS, 33 931 2283716
TESTER, LAN, LCD, 10/100, CABLEIQ 9808779
TESTER, LAN, LCD, 10/100/1000, MICROSCANNER 2 KIT 1467431
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Texas Instrument VPU-500
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Texas Instruments 5TI-1023
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TEXAS INSTRUMENTS PLC 2223050-0004 USPP 22230500004
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TEXAS INSTRUMENTS PLC 2490092 USPP 2490092
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TEXAS INSTRUMENTS PLC 500-5035 NSFP 5005035
TEXAS INSTRUMENTS PLC 500-5038 USPP 5005038
TEXAS INSTRUMENTS PLC 500-5047A NSFP 5005047A
TEXAS INSTRUMENTS PLC 500-5047A NSPP 5005047A
TEXAS INSTRUMENTS PLC 500-5053 NSPP 5005053
TEXAS INSTRUMENTS PLC 500-5056 FNFP 5005056
TEXAS INSTRUMENTS PLC 500-523 USPP 500523
TEXAS INSTRUMENTS PLC 500-7102 USPP 5007102
TEXAS INSTRUMENTS PLC 500-7111 NSFP 5007111
TEXAS INSTRUMENTS PLC 500-7113 USPP 5007113
TEXAS INSTRUMENTS PLC 500-7114 USPP 5007114
TEXAS INSTRUMENTS PLC 500-7201 USPP 5007201
TEXAS INSTRUMENTS PLC 500-7202 USPP 5007202
TEXAS INSTRUMENTS PLC 500-7203 USPP 5007203
TEXAS INSTRUMENTS PLC 500-7204 USPP 5007204
TEXAS INSTRUMENTS PLC 505-2556 USPP 5052556
TEXAS INSTRUMENTS PLC 505-5103 NSFP 5055103
TEXAS INSTRUMENTS PLC 505-5103 USPP 5055103
TEXAS INSTRUMENTS PLC 505-7012 NSFP 5057012
TEXAS INSTRUMENTS PLC 505-ATM-0220 USPP 505ATM0220
TEXAS INSTRUMENTS PLC 505-ATM-0440 NSPP 505ATM0440
TEXAS INSTRUMENTS PLC 505-ATM-0440 USPP 505ATM0440
TEXAS INSTRUMENTS PLC 505-ATM-4120 USPP 505ATM4120
TEXAS INSTRUMENTS PLC 505-CP1434-TF NSPP 505CP1434TF
TEXAS INSTRUMENTS PLC 505-CP2572 NSPP 505CP2572
TEXAS INSTRUMENTS PLC 530-1102 NSFP 5301102
TEXAS INSTRUMENTS PLC 530T-1112 USPP 530T1112
TEXAS INSTRUMENTS PLC 535-1212 USPP 5351212
TEXAS INSTRUMENTS PLC 555-1101 NSPP 5551101
TEXAS INSTRUMENTS PLC 555-1101 USPP 5551101
TEXAS INSTRUMENTS PLC 555-1103 USPP 5551103
TEXAS INSTRUMENTS PLC 555-1104 USPP 5551104
TEXAS INSTRUMENTS PLC 555-1105 USPP 5551105
TEXAS INSTRUMENTS PLC 560-2120W NSFP 5602120W
TEXAS INSTRUMENTS PLC 560-2120W USPP 5602120W
TEXAS INSTRUMENTS PLC 560-2123 USPP 5602123
TEXAS INSTRUMENTS PLC 560-2124 NSFP 5602124
TEXAS INSTRUMENTS PLC 560-2124 USPP 5602124
TEXAS INSTRUMENTS PLC 560-2125 USPP 5602125
TEXAS INSTRUMENTS PLC 560-2126 NSFP 5602126
TEXAS INSTRUMENTS PLC 560-2126-B NSFP 5602126B
TEXAS INSTRUMENTS PLC 560-2128 USPP 5602128
TEXAS INSTRUMENTS PLC 560-2132 NSFP 5602132
TEXAS INSTRUMENTS PLC 560-2820 NSFP 5602820
TEXAS INSTRUMENTS PLC 560-2820 NSPP 5602820
TEXAS INSTRUMENTS PLC 560-2820 USPP 5602820
TEXAS INSTRUMENTS PLC 560T1101 USPP 560T1101
TEXAS INSTRUMENTS PLC 565-1101 USPP 5651101
TEXAS INSTRUMENTS PLC 565-2820 NSFP 5652820
TEXAS INSTRUMENTS PLC 565-2820 NSPP 5652820
TEXAS INSTRUMENTS PLC 565-2820 USPP 5652820
TEXAS INSTRUMENTS PLC 575-2103 USPP 5752103
TEXAS INSTRUMENTS PLC 575-2104 USPP 5752104
TEXAS INSTRUMENTS PLC 575-2106 USPP 5752106
TEXAS INSTRUMENTS PLC 5TI-1013 USPP 5TI1013
TEXAS INSTRUMENTS PLC 5TI-1020-1 USPP 5TI10201
TEXAS INSTRUMENTS PLC 5TI-1021-1 USPP 5TI10211