Nidec & Control Techniques Unidrive M700, M600, M400, HS30 & HS70 Drive
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Apr 12, 2024 11:41 am
Cause : Braking resistor overload timed out (I2t) comes when the Brake R Too Hot 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 Brake R Too Hot trip is initiated when 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.
- 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.
