P0972VA

P0972VA

P0972VA

P0972VA

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。

6GK7242-5DX30-0XE0   1

G0549A-240-050   10

77-964-2300 数量1

SPCIS22    2

BCU-12 3AUA0000110430  ， 1个

DCF803-0035   1

HOERBIGER  RL500P08P30   1个

型号 D1751P24B8PP340  厂家Nidec   数量6

PAM-199-P   6

WES2345-01400

WES2345-81102

WES2345-01021

WES2042-21606-3

WES2042-21609-1   各1

SMB9215-1E-1-6669  OMEGA  2个

HEIDENHAIN    规格型号：ERN1387-020     数量：3

ARN30-A            1

YOKOGAWA的型号：EJA530E-JDS4N-012EN      3个

IC693CPU374-BG数量2----------

A860-0203-T011数量2

A350-8101-T184数量1

MMC-BDPO42PNX数量1

MMC-BDP042PNX

QBGFEP2030W1， 数量1伊顿 QB GFCI 断路器，接地故障断路器，螺栓固定式，钟形报警器，30A，10 kAIC，双极，120/240V，不可互换，30 mA 跳闸灵敏度

Mhd093b-058-Np1-Aa   R911288813   1

动力线 FANUC b22-DLWX 套 2 

编码器电缆 FANUC b22-BMQX 套 1

数字控制器  DC230B-CE-2A-10-0000000-20-0

数字控制器  UDC2300  各2台

DCS880-S01-0405-04   1

6SE7038-6TK60数量1

6ES7155-6AU01-0BN0   14

6SL3995-5RW00-0AA0   1

6SL3985-5PX00-0AA0   1

6SC8473-6AA00-0AA0   1

6SL3995-5LW02-0AA0   1

6SL3985-5LW20-0AA0   1

6SL3060-4AF10-0AA0   1

6SL3060-4AB00-0AA0   1

6SL3985-5PX03-0AA0   1

6SL3996-5YX00-0AA0   1

6SL3994-6FC00-0AA0   1

6SY8101-0AB65   1

6SL3060-4AJ20-0AA0   1

6ED1052-1MD08-0BA0   1

6SL3995-6PX80-0AA0   2

6SL3994-6FC00-0AA0   2

6SL3352-1AG35-8BA1    1

6SL3351-1AG35-8BA1    1

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