We are using a Multicam 3000 with a Colombo spindle and also a knife tool holder. When rebooting the machine from router to knife or vice versa the following error message appears on the handheld controller:

Warning: Low Voltage (4.89 VDC 0.00 VAC)

Cancel makes the message go away and there is no other sign of trouble. Machine works as usual.

Does anyone know what that means or what to do about it?