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BL-U1
BL-U1
BL-U1
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。
3HAC028357-001 1
A5E35533698-AA数量2
RE2050TH 5
Q26UDVCPU-F42 7
414-2XG03-0AB0 1
SICK SRM50-HFA0-K21 1037071 1孟加拉
R04ENCPU
A1SHCPU
CS1W-ETN21 5个
JLXW6-22B 7
MODE = COM-741-S
Make: Supcon
Model: MB725-S
Make: Supcon
中压变频器控制板 GPIF-4037B1 1
5107882B 1PCS
1276BS 1PCS
AST3302-B1-D24 1PCS
GL30-RT/32/40a/95 (44503) 2PCS
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3AM051.6 1PCS
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924-60004-002 4
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C79040-A7520-C386-03-86 1
厂商:FLUX 马达风机 CE-MW14B3PH 90/125W
Lenze EVD532-E 数量4个
KGT2.150S-ZM 1
Model: DM 302 80-250VAC, 45Hz-55Hz.Brand: Iskra 2 孟加拉
YASKAWA ELECTRIC USA-MED-30MA2SE USAMED30MA2SE
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STROMBERG SAFUS75F400 SAFUS75F400
SQUARE D S174A S174A
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REXROTH 0-608-830-093 0608830093
RELIANCE ELECTRIC DM-150 DM150
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RELIANCE ELECTRIC 805405-5R 8054055R
RELIANCE ELECTRIC 803602-SE 803602SE
RELIANCE ELECTRIC 6V41-096TA 6V41096TA
RELIANCE ELECTRIC 615055-1V 6150551V
RELIANCE ELECTRIC 57C-330-C 57C330C
RELIANCE ELECTRIC 45C-410 45C410
RELIANCE ELECTRIC 45C-340 45C340
RELIANCE ELECTRIC 40V2060 40V2060
RELIANCE ELECTRIC 0-60028-2 0600282
PSC INC 1803011-2 18030112
OVATION D920801G17 D920801G17
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ORMEC GN3-20/2MCI GN3202MCI
OMRON CV500-VP227-E CV500VP227E
OMRON CFP0269 CFP0269
OMRON C200H-NC211 FNFP C200HNC211
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NH RESEARCH 1107095 1107095
NEC C-526 C526