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ATM-30A
ATM-30A
ATM-30A
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。
1C31192G01 2
1C31205G01 2
1C31206G01 1
1P00028G01 2
ADAM-5018P 2
ADAM-5081 1
ADAM-5051S 1
ADAM-5069 1
ADAM-5017P 4
6GK1503-3CD00
6GK1502-3CB10 各二
GM6-PAFA
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开关 8ZX1012-0UC60-1AA1 个 5.00 Siemens
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ASD240-0618E2J1 8个
8C-PDODA1数量2-----------
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8C-PAIH54数量2-------------
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GD5000-A0500-10-L-06 400kW/10数量2
YASKAWA ELECTRIC ETJ002860 ETJ002860
YAMATAKE 82114927-002 82114927002
WESTRONICS INC 3000-111-010-031-012-0-0 300011101003101
WESTINGHOUSE NCMZ-1799 NCMZ1799
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SYMAX 8020-SCP-544 8020SCP544
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STROMBERG SAFUI-290F460 SAFUI290F460
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SAGINAW D-56059 D56059
RITTAL 3394.509 3394509
REXROTH 0-608-830-123 0608830123
RELIANCE ELECTRIC T2851303L-TX T2851303LTX
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RELIANCE ELECTRIC C1812ATZ C1812ATZ
RELIANCE ELECTRIC 86487-S 86487S
RELIANCE ELECTRIC 801429-SD 801429SD
RELIANCE ELECTRIC 3RA2003 3RA2003
RELIANCE ELECTRIC 0-51893-2 0518932
PPT VISION 661-0326-C30 6610326C30
OMRON NT600M-DT211 NT600MDT211
OMRON F400-C10E F400C10E
OMRON CV500-MC221 CV500MC221
NSK 23056-CAMK-E4-C3 23056CAMKE4C3
NEMATRON CORP ICC-310 ICC310
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NACHI RAX11 RAX11