DSQC314B
DSQC314B
DSQC314B
3、 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P L C 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P L C 的输出模块,实现两者的阻抗匹配。
(2)电压范围。当变频器和P L C 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P L C 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。
NACHI MFM552H1V SERVO MOTOR 5.5 KW, 2000 R/MIN (NEW SURPLUS)
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DSCA114
DSCA121
DSDI130
DSDO130
DSDX110
DSDXB001
DSMB124
DSMB125
DSMB127
DSMC110
DSPA110
DSPC153
DSPC157
DSQC101
DSQC103
DSQC105
DSQC107
DSQC115
DSQC116
DSQC122
DSQC123B
DSQC129
DSQC142
DSTD160
DSQC200
DSQC202
DSQC204
DSQC208
DSQC208A
DSQC209
DSQC210
DSQC211
DSQC215
DSQC223
DSQC224
DSQC227
DSQC228
DSQC229
DSQC230
DSQC233
DSQC235A
DSQC235B
DSQC236A
DSQC236B
DSQC236C
DSQC236D
DSQC236G
DSQC236H
DSQC236K
DSQC236P
DSQC236T
DSQC238
DSQC239
DSQC241
DSQC243
DSQC248
DSQC249A
DSQC249B
DSQC252
DSQC253
DSQC254
DSQC255
DSQC256A
DSQC257
DSQC258
DSQC259
DSQC266A
DSQC266B
DSQC266C
DSQC266G
DSQC266H
DSQC266T
DSQC300
DSQC301
DSQC302
DSQC306
DSQC307
DSQC313
DSQC314A
DSQC314B
DSQC315
DSQC316
DSQC317
DSQC318
DSQC320
DSQC321
DSQC322
DSQC323
DSQC324
DSQC325
DSQC326
DSQC327
DSQC327A
DSQC328
DSQC328A
DSQC331
DSQC332
DSQC334
DSQC335
DSQC336
DSQC344
DSQC345A
DSQC345B
DSQC345C
DSQC345D
DSQC345E
DSQC346
DSQC346B
DSQC346C
DSQC346E
DSQC346G
DSQC346U
DSQC350
DSQC351
DSQC352
DSQC352A
DSQC354
DSQC355
DSQC358C
DSQC358E
DSQC358F
DSQC358G
DSQC361
DSQC363
DSQC365
DSQC373
DSQC374
DSQC377B
DSQC385
DSQC500
DSQC501
DSQC503
DSQC504
DSQC505
DSQC506
DSQC508
DSQC509
DSQC518A
DSQC518B
DSQC522
DSQC539
DSQC546A
DSQC601
DSQC609
DSQC643
DSQC652
YTEA250-8