50420: Underrun in the Axis computer

Robot Controller
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1

Hello!

Anyone know what could cause the error 50430: Underrun in the Axis computer?

The robot is idle, and the only thing running is a simple background task.

We have installed 4 new robots to a production line with 9 robots running.

The 9 “old” robots, which runs RW 6.01.0123, are all fine.. But atleast 2/4 new robots, which runs RW 6.03.00.00, is getting this error.

All 13 robots are running the same background task when idle, so I don’t understand why 2 of them should have any problems with it.

Below is a screenshot of the error, plus a screenshot of the controller properties:

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Best Regards,
Kilde

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2

We hade the same problem with one irb 6700 RW 6.03 this summer. The advice we got from abb was to check that earthing for any in/out going cabels was done correctly. Also tryid to change the maine computer but nothing workt. After we moved the cell to the customer the error has only appeard like 2-3 times and always after a short time after power up. And also the error appeard the most time when the cell was stoped and robot in stoped state.

3

It is probably caused by disturbances on the LAN cabling. If LAN cable is routed close to the drive module/cables or process cables, problems like this could occur.