![]() S5-95U randomly stops and resumes during operation ever since we were forced to replace the PLC battery and restore the program.Ģ. What's even more baffling is that even after we replaced the PLC battery with a new one, Battery LED is still yellow although the program is still retained in the RAM.ġ. Strangely, the PLC battery we replaced still had 3.4VDC upon checking. Prior to the random stops issue, around January 2021 the S5-95U completely stopped and the program in the RAM was erased so we had to replace the PLC battery and restore the program with our backup. This is the first time it has happened after a decade of service. However the S5-95U instantly returns to RUN status after stopping. ![]() Lately the S5-95U has been randomly stopping during operation thus causing the hydraulic press to stop running. We have a hydraulic press that is being controlled by Siemens S5-95U PLC.
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