[1]
On
Select
On
[1] to transform the acoustic motor switching noise
from a clear ring tone into a less discernable ‘white’ noise. This
is achieved by slightly and randomly altering the synchronism
of the pulse width modulated output phases.
Select
Off
[0] for no change to the acoustic motor switching
noise.
2.13.3. Mains On/Off, 14-1*
Parameters for configuring mains failure monitoring and handling.
14-12 Function at Mains Imbalance
Option:
Function:
[0]
*
Trip
[1]
Warning
[2]
Disabled
[3]
Derate
When a severe mains imbalance is detected:
Select
Trip
[0] to trip the frequency converter;
Select
Warning
[1] to issue a warning;
Select
Disabled
[2] for no action or
Select
Derate
[3] for derating the frequency converter.
Operation under severe main imbalance conditions reduces the
lifetime of the motor. Conditions are considered severe if the
motor is operated continuously near nominal load (e.g. a pump
or fan running near full speed).
2.13.4. Trip Reset, 14-2*
Parameters for configuring auto reset handling, special trip handling and control card self test or
initialisation.
14-20 Reset Mode
Option:
Function:
[0]
Manual reset
[1]
Automatic reset x 1
[2]
Automatic reset x 2
[3]
Automatic reset x 3
[4]
Automatic reset x 4
[5]
Automatic reset x 5
[6]
Automatic reset x 6
[7]
Automatic reset x 7
[8]
Automatic reset x 8
[9]
Automatic reset x 9
[10]
*
Automatic reset x 10
[11]
Automatic reset x 15
[12]
Automatic reset x 20
VLT
®
AQUA Drive Programming Guide
2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
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