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3HAC17484 10/03电机参详
3HAC17484 10/03电机参详
3HAC17484 10/03电机参详
模拟量信号连接应注意的问题变频器中的模拟量输入信号,通常指0~10V/5V 的电压信号或0/4~20 mA的电流信号;这些模拟量输入信号可通过接线端子由外部给定,当变频器与PLC连接时,这些模拟量输入信号也可来自PLC的模拟量输出信号,如图3 所示。在进行模拟量的连接时应注意:
(1)阻抗匹配。根据变频器的输入阻抗选择PLC的输出模块,实现两者的阻抗匹配。
(2)电压范围。当变频器和PLC的电压信号范围不同时(如变频器的输入信号为0~10V,而PLC的输出电压信号范围为0~5V 时;或PLC的一侧的输出信号电压范围为0~10V而变频器的输入电压信号范围为0~5V时),需采用串联电阻的方式进行分压,以保证两者在正常电压范围内
工作,避免电压过限可能损坏器件。
(3)采用屏蔽电缆或绞合电缆。对于变频器和PLC而言,弱电控制信号(电压0~5V/10V、电流0/4~20mA等)易受到外界强信号的干扰,对控制信号采取适当的屏蔽措施。常用的方式就是采用屏蔽电缆进行屏蔽;对于长距离的控制回路宜采用绞合电缆,绞合电缆的绞合间距尽可能小。
(4)主、控电缆分开布线。实际连线时,注意主、控电缆分开布线,且相隔的距离。以保证主电路侧的干扰及噪音影响不到控制电路。
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ACS880-01-32A-3+P944+D150+N5050 4
A06B-6083-H245 1
2711P-T12W22A9P数量2 面价44015
1769-CJC数量4 面价1483
ACS880-01-145A-3+D150+N5050 1
ACS580MV-PEBB-R8 1
ACS510-01-017A-4 1个
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TOPAZ 97630-21 9763021
TEXAS INSTRUMENTS PLC CVU1000-8001 CVU10008001
TEXAS INSTRUMENTS PLC 505-5103 5055103
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TB WOODS WFC-4050-0CHT WFC40500CHT
TAYLOR ELECTRONICS 5202RA2000 5202RA2000
SYMAX 8030-CRM-211 8030CRM211
SYMAX 8010-SFW-601 8010SFW601
STAEFA CONTROL SYS REG9 REG9
SQUARE D SMSDL SMSDL
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RELIANCE ELECTRIC 0-52837 052837
RELIANCE ELECTRIC 0-51893-1 0518931
PERCEPTRON 9110014 9110014
PCME LTD DM-990 DM990