26 · FC 301/302 · WARNING/ALARM
For 26 · FC 301/302 · WARNING/ALARM, brand is Danfoss; model / series is FC 301/302; fault code is 26; fault name is Brake resistor power limit; type is WARNING/ALARM, verified against its source on 2026-09-01.
- Brand
- Danfoss
- Model / series
- FC 301/302
- Fault code
- 26 verified
- Fault name
- Brake resistor power limit verified
- Type
- WARNING/ALARM verified
- Cause
- The power transmitted to the brake resistor is calculated as a mean value over the last 120 s of run time. The calculation is based on the DC-link voltage and the brake resistor value set in parameter 2-16 AC brake Max. Current. The warning is active when the dissipated braking power is higher than 90% of the brake resistor power. If option [2] Trip is selected in parameter 2-13 Brake Power Monitoring, the frequency converter trips when the dissipated braking power reaches 100%. verified
What the source says
WARNING/ALARM 26, Brake resistor power limit
— files.danfoss.com, retrieved 2026-09-01
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Cause
The power transmitted to the brake resistor is calculated as a mean value over the last 120 s of run time. The calculation is based on the DC-link voltage and the brake resistor value set in parameter 2-16 AC brake Max. Current. The warning is active when the dissipated braking power is higher than 90% of the brake resistor power. If option [2] Trip is selected in parameter 2-13 Brake Power Monitoring, the frequency converter trips when the dissipated braking power reaches 100%.
— all from files.danfoss.com, retrieved 2026-09-01
Source
- files.danfoss.comhttps://files.danfoss.com/download/Drives/MG33MO22.pdf