F108-156
Faulty RAM test
SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive
What does F108-156 mean?
A fault was detected during the internal RAM test of the DCS..B option. This indicates an issue with the memory component crucial for operation.
Source: SEW Eurodrive MOVIDRIVE MDX60B/61B Variable Speed Drive
Open Manual (Page 210)