F108-109
Fault during internal data transmission
SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive
What does F108-109 mean?
A fault occurred during internal data transmission within the DCS..B option. This indicates a communication issue between internal components of the option.
Source: SEW Eurodrive MOVIDRIVE MDX60B/61B Variable Speed Drive
Open Manual (Page 210)