49
Speed limit
Danfoss · VLT HVAC-FC 102 Frequency Converter
What does 49 mean?
The motor speed is not within the specified range set in parameters 4-11 (Motor Speed Low Limit) and 4-13 (Motor Speed High Limit), generating a warning. If the speed drops below the limit set in 1-86 (Trip Speed Low) (except during start/stop), the frequency converter will trip. This indicates an operational deviation that could affect process control or product quality.