电气控制系统图

1、.：.；电气控制系统图普通有三种：电气原理图、电器布置图和电气安装接线图。这里重点引见电气原理图。电气原理图目的是便于阅读和分析控制线路，应根据构造简单、层次清楚明晰的原那么，采用电器元件展开方式绘制。它包括一切电器元件的导电部件和接线端子，但并不按照电器元件的实践布置位置来绘制，也不反映电器元件的实践大小。电气原理图普通分主电路和辅助电路控制电路两部分。A主电路是电气控制线路中大电流经过的部分，包括从电源到电机之间相连的电器元件；普通由组合开关、主熔断器、接触器主触点、热继电器的热元件和电动机等组成。B辅助电路是控制线路中除主电路以外的电路，其流过的电流比较小和辅助电路包括控制电路、照明电路

2、、信号电路和维护电路。其中控制电路是由按钮、接触器和继电器的线圈及辅助触点、热继电器触点、维护电器触点等组成。电气原理图中一切电器元件都应采用国家规范中一致规定的图形符号和文字符号表示。电气原理图中电器元件的规划电气原理图中电器元件的规划，应根据便于阅读原那么安排。主电路安排在图面左侧或上方，辅助电路安排在图面右侧或下方。无论主电路还是辅助电路，均按功能布置，尽能够按动作顺序从上到下，从左到右陈列。电气原理图中，当同一电器元件的不同部件如线圈、触点分散在不同位置时，为了表示是同一元件，要在电器元件的不同部件处标注一致的文字符号。对于同类器件，要在其文字符号后加数字序号来区别。如两个接触器，可用

3、KMI、KMZ文字符号区别。电气原理图中，一切电器的可动部分均按没有通电或没有外力作用时的形状画出。对于继电器、接触器的触点，按其线圈不通电时的形状画出，控制器按手柄处于零位时的形状画出；对于按钮、行程开关等触点按未受外力作用时的形状画出。电气原理图中，应尽量减少线条和防止线条交叉。各导线之间有电联络时，在导线交点处画实心圆点。根据图面布置需求，可以将图形符号旋转绘制，普通逆时针方向旋转90o，但文字符号不可倒置。图面区域的划分图纸上方的1、2、3等数字是图区的编号，它是为了便于检索电气线路，方便阅读分析从而防止脱漏设置的。图区编号也可设置在图的下方。图区编号下方的的文字阐明它对应的下方元件或

4、电路的功能，使读者能清楚地知道某个元件或某部分电路的功能，以利于了解全部电路的任务原理。符号位置的索引q符号位置的索援用图号、负次和图区编号的组合索引法，索引代号的组成如下：q 图号是指当某设备的电气原理图按功能多册装订时，每册的编号，普通用数字表示。q当某一元件相关的各符号元素出如今不同图号的图纸上，而当每个图号仅有一页图纸时，索引代号中可省略“页号及分隔符“。q当某一元件相关的各符号元素出如今同一图号的图纸上，而该图号有几张图纸时，可省略“图号和分隔符“q当某一元件相关的各符号元素出如今只需一张图纸的不同图区时，索引代号只用“图区表示。q如图21图区9中的KA常开触点下面的“8即为最简单的

5、索引代号。它指出了继电器KA的线圈位置在图区民q图21中接触器KM线圈及继电器KA线圈下方的文字是接触器KM和继电器KA相应触点的索引。q电气原理图中，接触器和继电器线圈与触点的从属关系运用右图表示。即在原理图中相应的线圈的下方，给出触点的图形符号，并在下面标 HYPERLINK b19.photo.store./psu?/e94fd85a-095b-45f7-abf1-49a1578a84b1/UFCqF8xJFq4Sqk7fISufBOYUDyy4cxrfTfU59ymzGzQ!/b/YeoLJQrdegAAYh89VgsURwAA&a=17&b=19&su=131260353&rf=2-

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