After some digging, I have found that my CB2 2013 UR5 48V LED does not light up during startup. The entire machine shuts down 2 seconds after clicking the power button. I measured the terminal for the 48V psu on the masterboard and saw 0V. My next step would be to take apart the CB2 using the service manual and check the psu input and output directly as well as checking the distributor. Is there another possible reason the machine could be acting this way? Could it possibly be the motherboard battery, BIOS issues, or do my readings narrow the problem to the 48V psu or distributor?
Did you make a new thread since you want more input than mine or don’t believe me?
I can go into further detail for you, if you’d like. The robot has a 12V supply (for the motherboard), a 24V (for the SCB/masterboard) and a 48V (for the robot arm). The 12V supply powers the motherboard which is the computer in the system and runs the whole operating system.
When the computer has powered up, it will initialize the 24V and 48V systems. It will check the 48V shortly during the start up process, but a missing 48V will not prevent the system from booting. You will get an error when trying to initialize the robot arm on the Initialization screen.
So I can with 90% certainty tell you your issue is not the 48V or related to that, if your robot shuts down after just 2 seconds after pressing the power button.
On the other hand, a CMOS battery is the small button shaped battery on the motherboard. It makes sure the BIOS remembers its settings even when power is removed completely from the motherboard. Such a battery typically lasts 8-10 years.
The BIOS holds settings regarding boot up, touch screen and more. A very common issue with a flat CMOS battery is missing touch functionality or a controller that won’t boot.
