PLC broken?

[angeraer 1]

Hello, I've been using a PLC for some time now for my windmill project as some of you may already know. Today I noticed very strange behavior and after debugging a little bit I saw that the PLC's RUN LED, during normal operation, went off/on several times while the power LED on the power supply or the RUN LEDs on the modules didn't go off/on. The error log in the PLC shows a lot of power off errors. Does this mean the PLC is broken? The PLC was connected behind an UPS. Removing the UPS gave me the same result after a while. Several power off's in the error log? Thanks, Andy.

[Sleepy Wombat 27]

Possible power supply fault.