IC698ACC701
IC698ACC701
IC698ACC701
IC698ACC701
很多人比较热衷于使用液晶显示器,液晶显示器可以显示汉字,在有照明的情况下也比较省电,但是液晶显示器的最大问题是低温性能不好,
《联系人;欧先生》
《座机:0592-5709825》
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《 :2479261344》
《邮箱:2479261344@.com》通常在-10℃以下不能正常显示。所以除非能够确定控制器的使用环境温度在-10℃以上,否则不要使用液晶显示器。
3、参数设定功能
对于以无功电流或无功功率为依据进行控制的无功补偿控制器,参数设定功能是必备的。
在控制器制造的时候,电容器的额定容量,电流互感器的变比等参数无法事先确定,只能根据无功补偿装置的实际情况及现场情况进行设定,因此控制器必须具备参数设定功能。设定的参数应保证不会因掉电而丢失。
最直接的保存设定参数的方法就是使用EEPROM器件,如24C02等。有一些单片机具有片内EEPROM,这样就可以减少外围器件数量。还有一些单片机具有在应用编程功能,也就是说,可以在程序运行过程中修改片内FLASH程序存储器的内容。对于这类单片机也可以将设定参数保存在FLASH程序存储器中,不过在应用编程的程序设计比较复杂一些。
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