SIEMENS 901B-2555-A
变频器干扰的抑制
(1)加隔离变压器,主要是针对来自电源的传导干扰,可以将绝大部分的传导干扰阻隔在隔离变压器之前。
(2)使用滤波器,滤波器具有较强的抗干扰能力,还具有防止将设备本身的干扰传导给电源,有些还兼有尖峰电压吸收功能。
(3)使用输出电抗器,在变频器到电动机之间增加交流电抗器主要是减少变频器输出在能量传输过程中线路产生电磁辐射,影响其它设备正常。
综上所述,其实PLC控制系统中的干扰是一个十分复杂的问题,因此在抗干扰设计中应综合考虑各方面的因素,合理有效地抑制抗干扰,才能够使PLC控制系统正常工作。随着PLC应用领域的不断拓宽,如何高效可靠的使用PLC也成为其发展的重要因素。在不久的将来,PLC会有更大的发展,产品的品种会更丰富、规格更齐全,通过***的人机界面、完备的通信设备会更好地适应各种工业控制场合的需求,PLC作为自动化控制网络和国际通用网络的重要组成部分,将在工业控制领域发挥越来越大的作用。
1 F. Q7 e' |( @/ F( E) s8 X1 q( 厦门岳航计算机工程有限公司
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ASTeX ARX-X243 5kW RF Generator As-Is
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ENI OEM-650A Solid State Power Generator OEM-6A-11491-51 Rev.G working
Vicor PFC MEGAPAC Power Supply MPG-77532 1140-00310 New
Lambda 5-12-15-24-36VD?C DC Power Supply lot of 11 working
Power-One 5-12-24VDC DC Power Supply lot of 14 working
Digital Dynamics SIOC Power Supply 27-053660-00 Used Working
Daihen DCP-208-24 DC Power Supply 4x50W used working 0190-36252
Orion ETD452-DA-UL Pel Thermo Power Supply New
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Vicor 4kW MegaPac MX5-410507-33-E?L DC Power Supply 97123184 tested working
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Vicor 4kW MegaPac MX4-410503-33-E?L DC Power Supply 97123186 tested working
Vicor MegaPAC DC Power Supply MP5-76563 New 1140-00384
NEAT 01130003 5V DC Power Supply Module working
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Nikon 4S001-107 Power Module Assembly VDBC0002201
CoolWave II Nordson 1098493A Microwave Generator Power Supply AMAT 0190-37962
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Kniel 4022.436.23221 5V Power Supply Card CP 5.32/VME working
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HiTek Power DC Supply G253/70A A1037290 AS-IS 0190-A1311 26kV Max
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Cosel K100A-24 DC Power Supply 24VDC 4.*** lot of 10 working
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Lambda JWS120P-24 DC Power Supply lot of 3 tested working
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