数据备份

Data backup

在进行维护的时候，我们是一定要断电的，断电之间的数据备份是一项重要环节，对于需要长期归档的数据，可以将历史趋势数据备份到移动硬盘，然后关闭基于Windows的操作系统（注意保存），记录控制器的内部参数。

When maintenance, we must cut off the power, data backup is an important link between, need for long-term archiving of data, can be the historical trend of data backup to the mobile hard disk, and then close the operating system based on Windows (pay attention to the preservation of records), internal controller.

关闭电源

Turn off the power supply

数据备份完毕后，执行拉闸的操作，要先关闭下属的各个控制器的保护开关，在断开总开关，上电时，顺序相反。最好加上安全锁，以免有人意外送电，造成事故。

After the data backup is completed, the operation of the operation is to turn off the protection switches of all the controllers of the subordinate. Best plus the safety lock, in order to avoid accidental transmission, causing the accident.

外观及环境检查

Inspection of appearance and environment

查看周围环境的温度、湿度等是否合理，元器件上是否有大量的灰尘，测试系统的绝缘性，可以使用摇表测试设备绝缘情况。

To see whether the ambient temperature and humidity are reasonable, whether there is a lot of dust on the components, and to test the insulation of the system, we can use the shake table to test the insulation of the equipment.

控制柜清扫

Control cabinet cleaning

清扫之前，最好把PLC和变频器等带散热孔的电子元器件遮挡好，防止灰尘进入，影响元器件工作。只能用吸尘器，不能使用压缩空气吹，压缩空气会将灰尘和水汽吹入元器件，造成短路。

Before cleaning, it is better to shield the electronic components with PLC and frequency converter and other electronic components to prevent dust from entering and affect the work of the components. It can only use the vacuum cleaner, can not use the compressed air to blow, the compressed air will blow the dust and the water vapor into the component, causing the short circuit.