RobotStudio event

controller restart whe i start jogging

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Hi
i have robot IRB340 with controller irc5 and wen i start to jogge i the controller pc restarts, but i have tried to make  I-restart and setet every thing again it starts to work normally for view minutes.
The controller just shows error wit smb battery now, and the problem started when i changed backup battery in IRC5 cabinet.
Have anyone idea about this problem??