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隔离端子的作用?与隔离器的区别?

日期:2019-07-02 09:03
隔离端子与隔离器,从表面上看来都是对事物起到一定的隔离作用,但是从实际操作过程中是有区别也就展现出来了。接下来大家具体看看。
隔离端子与隔离器的区别:
一。.隔离是将设备和系统之间的连接,通过光电或者磁感把数据通讯建立连接,其它都断开。没有干扰。提高稳定性;主要是信号隔离和电源隔离作用。但只起到线路切断功能,并且需要人工操作。
二。第一防止现场设备短路对控制器PLC造成伤害;第二防止干扰,因为进PLC的信号大多是24V的低电压信号,或4~20mA的小电流信号,极易受到外部环境的干扰,造成信号不稳定,失真。
三。.而隔离器是一种采用线性光耦隔离原理,将输入信号进行转换输出。输入,输出和工作电源三者相互隔离,特别适合与需要电隔离的设备仪表配用。除了起到信号隔离和电源隔离作用,还具有抗干扰功能。要比隔离端子复杂得多。
四。.主要是信号隔离和电源隔离作用。但只起到线路切断功能,并且需要人工操作。
隔离器是一种采用线性光耦隔离原理,将输入信号进行转换输出。输入,输出和工作电源三者相互隔离,特别适合与需要电隔离的设备仪表配用。除了起到信号隔离和电源隔离作用,还具有抗干扰功能。要比隔离端子复杂得多。

Isolation terminals and isolators, on the surface, all play a certain role in isolating things, but there are differences in the actual operation process. Next let's look at it in detail.
 
The difference between isolation terminal and isolator:
 
One. Isolation is the connection between equipment and system. Data communication is established through photoelectric or magnetic induction, and the rest is disconnected. No interference. Improve stability; mainly signal isolation and power isolation. But it can only cut off the line and need manual operation.
 
Two. The first is to prevent the short circuit of field equipment from harming the controller PLC; the second is to prevent interference, because the signals entering the PLC are mostly low voltage signals of 24V or small current signals of 4-20mA, which are easily disturbed by the external environment, resulting in signal instability and distortion.
 
Three. The isolator is a kind of linear optocoupler isolation principle, which converts the input signal to output. Input, output and working power supply are separated from each other, which is especially suitable for equipments and meters that need electrical isolation. In addition to signal isolation and power isolation, it also has anti-interference function. It's much more complicated than isolating terminals.
 
Four. The main functions are signal isolation and power isolation. But it can only cut off the line and need manual operation.
 
Isolator is a kind of linear optocoupler isolation principle, which converts the input signal to output. Input, output and working power supply are separated from each other, which is especially suitable for equipments and meters that need electrical isolation. In addition to signal isolation and power isolation, it also has anti-interference function. It's much more complicated than isolating terminals.

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