The Built-in Battery in Mitsubishi PLC: Function and Lifespan
If you've ever used a Mitsubishi PLC, you might have noticed that it comes with a built-in lithium battery. But what exactly does this battery do? And how long can it last under normal conditions? These are common questions among users, so let's take a closer look at the function and expected lifespan of the built-in battery in Mitsubishi PLCs.
In most Mitsubishi PLC models, the built-in lithium battery serves an important role. It is primarily used to retain critical data when the power is turned off. This includes the contents of the power-off holding registers, the real-time clock, and some program data. The battery ensures that these essential functions remain intact even when the PLC is not powered on.
According to field experience and customer feedback, the built-in lithium battery typically lasts between 6 to 8 months after the PLC has been powered off. However, once the PLC is powered back on, the battery automatically recharges. Under normal operating conditions, the battery can last more than five years. In some cases, especially with proper maintenance and usage, it can even last over ten years.
It’s important to note that the lifespan of the battery can vary depending on factors such as environmental conditions, frequency of use, and how often the PLC is powered on and off. Regular monitoring and timely replacement of the battery can help prevent unexpected system failures or data loss.
If you're using a Mitsubishi PLC, it's a good idea to check the battery status periodically and replace it if necessary. This will ensure the reliability and performance of your automation system over the long term.
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