A03B-0807-C106
A03B-0807-C106
A03B-0807-C106
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。
6FC5303-0AF25-0AA0 1
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CC-U/STD
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C400/A8/1/1/10
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331-7KB02-0AB0 8
西门子 OND-DFSB-120 3个
ESR5-NO-31-AC-DC Eaton 4个
A06B-0227-B100 1台
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PLC控制器AC800F 2
SD802F
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6SL3162-0AF00-0AA1 4
6SL3162-0AB00-0AA0 8
6SL3162-0AM00-0AA0 12
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ABRC-65C
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YASKAWA ELECTRIC JANCD-PC20 JANCDPC20
XYCOM 9485 9485
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TOTAL CONTROL PRODUCTS QPL-21100-C2P QPL21100C2P
TOTAL CONTROL PRODUCTS QPI-31200-C2P QPI31200C2P
TOTAL CONTROL PRODUCTS QPI-21100-S2P QPI21100S2P
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SYMAX 8030-CRM-580 8030CRM580
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RELIANCE ELECTRIC 770.91.20 7709120
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RELIANCE ELECTRIC 355C22D 355C22D
RELIANCE ELECTRIC 150V4051 150V4051
RELIANCE ELECTRIC 0-57430-1 0574301
RELIANCE ELECTRIC 0-54339-6 0543396
PHILTEK POWER CORP HPI-10K-120-AS HPI10K120AS
PERCEPTRON 911-0018 9110018
PERCEPTRON 9110017 9110017
PERCEPTRON 911-0011 9110011
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MITSUBISHI HALP22K24BK HALP22K24BK
MILLER ELECTRIC 043268 043268
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GENERAL ELECTRIC TIM-1 TIM1
GENERAL ELECTRIC L90-G00-HPH-F8F-H6C-LXX-N6S-S6U-U6U-W7R L90G00HPHF8FH6CL