PN-382035

PN-382035

PN-382035

PN-382035

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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T8449  4

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SGDV-2R8A01A   2

C98043-A7014-L2   1------------

100-C23KD10，7个 1592

100-C72KD00，5个 3342

1SDA054892R1*1

1SDA066467R1*1

6ES7551-1AB00-0AB0 

6AV2 124-0QC02-0AX0   各2----------

6FC5357-0BB35-0AA0----------

6SN1123-1AA00-0JA1---------

6SN1123-1AA01-0FA1----------

6FX2007-1AE04------------

6FX2007-1AC04---------

6SN1123-1AA00-0LA2---------

6SL3352-1AG41-3FA1---------

6SN1118-0DJ23-0AA2---------

6SN1145-1BB00-0EA1-----------

6FC5203-0AF01-0AA0---------

6FC5210-0DF33-2AA0---------

6FC5203-0AF22-0AA2---------

6FC5210-0DF31-2AA0----------

6FC5357-0BB35-0AB0-----------

6SN1123-1AA00-0KA1----------

6FC5203-0AF02-0AA1-----------

6SN1145-1BB00-0FA1--------

6SN1118-0DG23-0AA1--------

6SN1118-0DM33-0AA2---------

6FC5210-0DF31-2AB0-----------

6SN1145-1BA02-0CA2-----------

6FC5357-0BB33-0AE2----------

6FX2007-1AC14-----------

6SN1145-1BA01-0DA1------------

6SN1123-1AA00-0CA2-----------

6SN1118-1NH01-0AA1----------

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1794-AENT 1   面价6602

1794-OB32P 1    面价5225

1794-IE4XOE2 1     面价8833

2711P-T10C4D8 1 面价60716

1769-L35E 1 面价51754

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6RA8095-4KS22-0AA0-ZS01   2-----------

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369B1842G5005 MA050   1

369B1843G5003 MDI50 32CHS   1

369B1844G5004 MD053 16CHS   1

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SGLTW-40A 600BP   2

6DD1600-0BB0   2-----------

6ES7 153-2BA10-0XB0   13

6DD1661-0AE1   2-----------

6ES7658-1AX28-0YB5    1

6ES7852-0CC05-0YA5   1

6ES7 155-6AU00-0CN0    10

6DD1 600-0BA2    2--------------

6ES7416-3ES07-0AB0    1-----------

6ES7 331-7KF02-0AB0    2----------

ACS880-01-038A-3+E200    1

PN-200959   3----------

PN-204415   3-----------

PN-200960   6-------------

PN-202497   6-----------

PN-118365   6-----------

PN-382035   2-------------

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