FC-TSAO-0220M 模拟信号是幅度随时间连续变化的信号

☆型号：FC-TSAO-0220M 模拟信号是幅度随时间连续变化的信号

【产品详情】

模拟量是指一些连续变化的物理量，如电压、电流、压力、速度、流量等信号量，模拟信号是幅度随时间连续变化的信号，通常电压信号为0~10V，电流信号为4~20mA，可以用PLC的模拟量模块进行数据采集，其经过抽样和量化后可以转换为数字量。说到模拟量，就不得不提AI和AO，下面就来讲解下AI和AO。

AI和AO的讲解

（1）AI信号：模拟量输入

所谓模拟量即4-20mA或0-10V的电流或电压信号，输入到DCS中，经过变换，还原出原来的值，比如电流值到DCS中显示出来；电流互感器二次值（5A）经过电流变送器转换成4-20mA信号（5A对应20mA）,输入到DCS机柜，经过转换，在DCS中显示实际的电流值。

（2）AO信号：模拟量输出

和AI相反，AO是DCS输出4-20mA或0-10V信号，去控制设备的运行参数；比如，变频器的速度控制过程，以40HZ为例，通过远程DCS控制，认为给定参数值：40HZ，DCS同样发出一个对应的模拟量电流值，在4-20mA范围内（20mA对应50HZ），信号传入到变频器的控制器，变频器按照要求运行在40HZ。

☆型号：FC-TSAO-0220M 模拟信号是幅度随时间连续变化的信号

【英文介绍】

Analog refers to some continuous change of physical quantities, such as voltage, current, pressure, speed, flow and other semaphore, analog signal is the amplitude of continuous change with time signal, usually the voltage signal is 0~10V, the current signal is 4~20mA, can use the PLC analog module for data acquisition, which can be converted to digital quantity after sampling and quantization. When it comes to simulation, we have to mention AI and AO, and let's explain AI and AO below.

AI and AO's explanation

(1) AI signal: analog input

The so-called analog quantity is 4-20mA or 0-10V current or voltage signal, input into the DCS, after transformation, restore the original value, such as the current value displayed in the DCS; The secondary value of the current transformer (5A) is converted into a 4-20mA signal by the current transmitter (5A corresponds to 20mA), which is input to the DCS cabinet, and the actual current value is displayed in the DCS after conversion.

(2) AO signal: analog output

In contrast to AI, AO is the DCS output 4-20mA or 0-10V signal to control the operating parameters of the device; For example, the speed control process of the frequency converter, taking 40HZ as an example, through remote DCS control, that given the parameter value: 40HZ, DCS also sends a corresponding analog current value, in the range of 4-20mA (20mA corresponds to 50HZ), the signal is passed to the controller of the frequency converter, and the frequency converter runs at 40HZ as required.

☆型号：FC-TSAO-0220M 模拟信号是幅度随时间连续变化的信号

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