Warnings and other messages in the software
U-USB is below minimum
This message appears if the U-USB voltage is below 4.8 VDC. Fault-free functioning of the converter is no longer
guaranteed. Supply the converter from an external power supply unit.
U-OUT outside of range
This message appears if U-OUT is less than 11.2 VDC. Supply the converter from an external power supply unit.
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U-IN outside of measurement range
The U-IN measurement range is from 0...12 VDC. The exclamation mark warns you that the upper limit of the
measuring range that can be displayed (> 16 VDC) has been reached.
The voltage for measurement that is actually applied (U-IN) can therefore be greater than the value for U-IN that
is displayed.
Connect power supply unit
If the difference between U-OUT and U-IN is less than 3 VDC, the „Connect power supply unit“ message appears.
Getting support
If faults or errors occur while you are working with the converter, use the Help with fault analysis section to rectify
the problem. If problems persist after you have worked through this section, you can request assistance from
KELLER by telephone. For contacts, visit: www.keller-druck.com
The „Download remote maintenance software“ function automatically launches the download of a Remote Desktop
Program. Once the download has completed, run the program. After you enter the connection code, our technical
support team will log into your computer and offer you on-the-spot help directly on your screen.
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