PP865

PP865

PP865

PP865

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。

6AV6644-0AB01-2AX0  1--------------

6SE7023-0UD61数量1--------------------

6GK1571- 1AA00   1

6GK1571-1AA00-------------------------

6ES7534-7QE00-0AB0    1个

3AXD50000007297  1

2711-M3A18L1  1  3710  2012年

1761-L32BWA   1  5046  2019年

140MG-J8P-D20  2

RDCU-12C -------------------------

3ET8161-5UG04-5AF1数量1

3WT8161-5UG04-5AF1

1606-XLE240E     2514

1756-IV32     6077

6GK1561-1AA01    1个-------------------

090-0XX84-0FF5   3个

038-6GL84-1JA1要新版本   1个-----------------

031-SEF84-1JC1    2个---------------------

031-8EF84-1JC1---------------------

5094-AEN2TR   面价10580      10

215-1AG40-0XB0  3

231-5PF32-0XB0  3

231-4HF32-0XB0  5

232-4HD32-0XB0  3

223-1BL32-0XB0  5

124-0QC02-0AX1  3

6GK7242-5DX30-0XE0  3 ----------------------

ACS880-01-12A6-3+E202+L502,制动电阻JBR-03，面板安装组件DPMP-01  3

LFS1.21A2    1

6DE1052-1FB00-0BA6    1

VW3A1111       1

6EP1336-3BA00   2

6EP1437-3BA00   2

6EP3436-8SB00-0AY0   2

1794-TB3S/A   15 面价1822

1734-IB8S   面价：4056   1

1734-OB8S   面价：4715   1

6SC6114-5HA00    1

6SN1130-1AA11-0CA0    1-------------------

6SN1145-1BA00-0CA0    1-------------------

3HNA007022-001     1-----------------

JZSP-CSP01-05-E   2-----------------

SGM7G-55DFW-SI110/N   1

JEPMC-60022-E   1

JEPMC-600ZA5-E   1

1CV3252A/IPC30060CA234CA0   1

SSTPB3-CLX-RLL   1

SST-PB3-CLX-RLL--------------------

1756-OW16I 1面价 8048

1769-IQ32  1面价 4981

1769-OB32  1面价 6118

1734-AENT  1面价 4305

1769-IT6   1面价 11766

1734-IB8S  1面价 4056

1734-OB8S  1面价 4715

1756-PA72C 1面价 11702

1734-IB4   1面价 584

1756-L72S  1面价 104491---------------

1734-OW4   1面价 1413

1756-L7SP  1面价 13844----------------

1734-OB4E  1面价 834

1756-EN2T  1面价 33639--------------------

1734-IE2C  1面价 2570

1756-IF4FX0F2F 1面价 29770

1756-IF4FXOF2F -----------------------

1794-TB3G  1面价 1874

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