I've got a GE Fanuc Series 90-30 CPU Model 374, I went up to site because the CPU cleared it's program. The LED indicators on the power supply were PWR - solid green, OK - solid green, RUN - off, BATT - off. I went online and only noticed it was giving a fault saying no program present on power up. So re-downloaded the program and also stored it in the Flash hoping that it wouldn't loose it's program again. We did a few power cycles, shut it down for half hour and it would power up fine in run mode. The BATT indicator light was off (meaning battery is okay), RUN indicator solid green, OK was solid green and PWR was solid green. It was running fine and I left site as everything seemed okay.
About 4 hours later, once I had left the PLC cleared it's program again, I am told the PLC panel was very hot inside, close to 50 Deg C when they noticed it go down.
Does anyone have any insight as to what could be happening, why the PLC keeps clearing it's program?
We are considering just replacing the CPU and power supply as nothing is really adding up here.
Any help would be appreciated.
About 4 hours later, once I had left the PLC cleared it's program again, I am told the PLC panel was very hot inside, close to 50 Deg C when they noticed it go down.
Does anyone have any insight as to what could be happening, why the PLC keeps clearing it's program?
We are considering just replacing the CPU and power supply as nothing is really adding up here.
Any help would be appreciated.
