Danfoss VLT FC 101 - Acoustic Noise or Vibration

3.2.7 Acoustic Noise or Vibration
If the motor or the equipment driven by the motor - for
example, a fan - is making noise or vibrations at certain
frequencies, congure the following parameters or
parameter groups to reduce or eliminate the noise or
vibrations:
•
Parameter group 4-6* Speed Bypass.
•
Set parameter 14-03 Overmodulation to [0] O.
•
Switching pattern and switching frequency
parameter group 14-0* Inverter Switching.
•
Parameter 1-64 Resonance Dampening.
Installation
VLT
®
HVAC Basic Drive FC 101
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