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WARNING/FAULT 26 in danfoss iC2 micro drive

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Cause : Brake Resistor Power Limit comes when 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 P 3.3.2 Brake Resistor Value.

  • The warning is active when the dissipated braking power is higher than the value set in P 3.3.3 Brake Resistor Power Limit. The drive trips if the warning persists for 1200 s.
  • Decrease brake energy via lower speed or longer ramp time.
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