AK-BX511

AK-BX511

AK-BX511

AK-BX511

数字量信号连接应注意的问题

变频器的输入信号中包括对运行/ 停止、正转/ 反转、点动等运行状态进行操作的数字量输入信号（开关型指令信号），这些信号常来自PLC 的数字量输出信号。PLC 通常利用其内部的继电器接点（继电器输出型P L C ）或具有开关特性的元器件（晶体管输出型PLC）与变频器相连，得到运行状态指令，如图1 和图2 所示。在进行数字量信号的连接时应注意：

（1）使用继电器输出型P L C 与变频器相连时，应注意接触不良常带来变频器误动作，因此在实际接线中要注意连接可靠。

（2）使用晶体管输出型P L C 与变频器相连时，应注意晶体管本身的电压的高低、电流的大小等限制条件在其范围内，保证系统的可靠性。

（3）设计变频器的输入信号电路时，应尽量避免采用继电器等感性负载，因继电器开闭产生的浪涌电流可能引起变频器的误动作。

（4）当P L C 输出的开关信号进入变频器时，有时会发生外部电源和变频器控制电源之间的串扰，应注意对P L C和变频器分开接地，避免两者使用共同的接地线。

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1756-PA75    1面价 14269

1762-IQ16    2面价 2095

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1794-AENT 2面价6668

1794-IB32 2面价4664

1794-OB32P 2面价5277

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6AV6545-0CC10-0AX0    1

1768-L43  1面价53675-------------

AB 1766-L32BWA PN-705  1面价 6420

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FENA-21   ABB 块 5

1756-EN2TR 1面价 36391------------

6ES7151-3AA23-OABO 块 2

1756-ENBT  1面价31711-----------

1783-US8T  13面价2188

1769-OA16  1面价5147

1756-PA75  1面价14269

1769-PA4   8面价5314

1762-IF4   2面价3509

1762-IQ8   1面价1680

1768-ENBT  1面价16000

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1756-IB32  1面价6077

2711P-T6C20D8 2面价22300

6ES7151-8AB01-0AB0  2

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1769-L32E  2面价42315

1769-OF2   1面价5795

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2171IF模块    2      配两端插头和6米线

216IF模块  87317-21610-S0211            2        配两端插头和3米线

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AWS TT-3150 Digital Torque Tester, Range 15.00 - 150.0 Lb-ft, Drive Size 1/2"

AWS TT-3250 Digital Torque Tester, Range 25.00 - 250.0 Lb-ft, Drive Size 1/2"

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AWS-8259TP ADVANTECH MONITORS CRT REMANUFACTURED

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AXCELIS RESOLVING APERTURE ASSEMBLY FOR GSD ULTRA 11050720 B

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AXIOM P1150/586T USPP P1150586T

Axiomtek P1000-370 Touchscreen Industrial Computer Workstation Panel

Axiomtek P5150-675-G INDUSTRIAL PC 15" 

Axis Connection  026000 _ O26OOO _ P15 Conntector 1.-4.Ax _ P25 5.-8.Ax

AXIS SYSTEMS M4K MOTHERBOARD P/N 8800-0037

AXONNET ICA-ALYZR-EFS NSFP ICAALYZREFS

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