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WARNING/ALARM 11 in danfoss VLT6000

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Cause : Motor thermistor over temp comes when the thermistor might be disconnected. The thermistor or the thermistor connection has been disconnected. Parameter 117 allows a choice of whether the frequency converter is to give a warning or an alarm.

  • Check for motor overheating.
  • Check if the motor is mechanically overloaded.
  • The thermistor or the thermistor connection has been disconnected. Parameter 128 allows a choice of whether the frequency converter is to give a warning or an alarm. Check that the thermistor has been correctly connected between terminal 53 or 54 (analogue voltage input) and terminal 50 (+ 10 Volts supply).
  • If using a thermal switch or thermistor, check that the programming if matches sensor wiring.
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