HANJIANG /MGM /LTXH / TENON/BOZA/
1. Dust removal is carried out weekly. When dusting, the power supply to the control system must be turned off, and a vacuum cleaner should be used to clean the surface dust thoroughly.
2. Check connections of the I/O modules weekly to ensure that all sockets, terminal boards, and modules are well connected and the modules are securely placed. This check should be performed when the environment where the PLC control system is located is often subjected to vibrations that cause terminal connections to loosen;
3. Perform a PLC battery check weekly: The access memory (RAM), counters, and auxiliary relays with retention functions storing user programs in the PLC are all protected by lithium batteries. The lifespan of the lithium battery about 5 years. When the voltage of the lithium battery gradually decreases to a certain level, the low battery voltage indicator on the PLC basic unit will light up. prompts the user to note that programs supported by the lithium battery can still be retained for about a week, and the battery must be replaced.
For example, there a red "BAT" LED indicator on the CPU module of the PLC. When this LED lights up, it indicates that the lifespan of the lithium battery in the is almost over (it can only be maintained for about a week at most). At this time, please replace the new lithium battery as soon as possible to prevent the in the PLC (when using RAM) from automatically disappearing.
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