Nidec & Control Techniques Commander C200, C300, NE200 & NE300 Drive
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Apr 10, 2024 5:17 am
Cause : Braking resistor overload timed out (I2t) comes when the It.br trip indicates that braking resistor overload has timed out. The value in Braking Resistor Thermal Accumulator (10.039) is calculated using Braking Resistor Rated Power (10.030), Braking Resistor Thermal Time Constant (10.031) and Braking Resistor Resistance (10.061).
- The It.br trip is initiated when the Braking Resistor Thermal Accumulator (10.039) reaches 100 %.
- Ensure the values entered in Pr 10.030, Pr 10.031 and Pr 10.061 are correct.
- Check resistor value and power rating.
- If an external thermal protection device is being used and the braking resistor software overload protection is not required, set Pr 10.030, Pr 10.031 or Pr 10.061 to 0 to disable the trip.
