If the display of the battery failure message does not go off, the battery(ies) is (are) empty.When the display of the battery failure message goes off, the battery(ies) is (are) ready to operate.Replace the battery(ies) and try once again to acknowledge with the FMR button.If you still cannot acknowledge the battery failure, remove the battery(ies) and short-circuit them for 1 to a maximum of 3 seconds.If you cannot acknowledge the battery failure, wait a few minutes and try again.Acknowledge any battery failure message from the power supply unit with the FMR button.Insert the backup battery(ies) in the battery compartment.Since the storage time of the lithium battery is usually not known, we recommend the following procedure: If lithium batteries are stored for a long time, they can become passive.
![siemens simatic s5 95u siemens simatic s5 95u](https://i.ebayimg.com/images/g/mEcAAOSwWW5bxrhf/s-l300.jpg)
This means the depassivation of the lithium battery. I'm hoping someone can help me figure out our issue. Worst case, I think our S5-95U needs to be replaced.
![siemens simatic s5 95u siemens simatic s5 95u](https://plc-planet.de/media/image/product/343/md/siemens-simatic-s5-95u-6es5095-8md01-6es5-095-8md01_1.jpg)
I have a suspicion that the two concerns I mentioned above are somehow connected but I lack the technical expertise to diagnose. PLC battery has been replaced but the Battery LED is still yellow but the program is still retained in the RAM. S5-95U randomly stops and resumes during operation ever since we were forced to replace the PLC battery and restore the program.Ģ. Envíos Gratis en el día Comprá Simatic S5 95u en cuotas sin interés Conocé nuestras increíbles ofertas y promociones en millones de productos. 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.
![siemens simatic s5 95u siemens simatic s5 95u](https://i.ebayimg.com/images/g/7hwAAOSwrxpdl8fb/s-l400.jpg)
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.