施耐德产品140AMM09000 Quantum

140AMM09000 Quantum

140AMM09000

1、使用屏蔽双绞线，但不连接屏蔽层。
　　2、当一个输入不使用的时候，将V IN 和COM端子短接。

3、模拟信号线与电源线隔离 (AC 电源线，高压线等)。

4、当电源线上有干扰时，在输入部分和电源单元之间安装一个虑波器。

5、确认正确的接线后，首先给CPU单元上电，然后再给负载上电。

6、断电时先切断负载的电源，然后再切断CPU的电源。

PLC编程算法(3)——脉冲量的计算

脉冲量的控制多用于步进电机、伺服电机的角度控制、距离控制、位置控制等。以下是以步进电机为例来说明各控制方式。

1、 步进电机的角度控制。首先要明确步进电机的细分数，然后确定步进电机转一圈所需要的总脉冲数。计算“角度百分比=设定角度/360°(即一圈)”“角度动作脉冲数=一圈总脉冲数*角度百分比。”

公式为：

角度动作脉冲数=一圈总脉冲数*(设定角度/360°)。

2、 步进电机的距离控制。首先明确步进电机转一圈所需要的总脉冲数。然后确定步进电机滚轮直径，计算滚轮周长。计算每一脉冲运行距离。后计算设定距离所要运行的脉冲数。

公式为：

设定距离脉冲数=设定距离/[(滚轮直径*3.14)/一圈总脉冲数]

3、 步进电机的位置控制就是角度控制与距离控制的综合。

以上只是简单的分析步进电机的控制方式，可能与实际有出入，仅供各位同仁参考。

伺服电机的动作与步进电机的一样，但要考虑伺服电机的内部电子齿轮比与伺服电机的减速比。

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