14-40 VT Level
Range:
Function:
66%
*
[40 - 90%]
Enter the level of motor magnetisation at low speed. Selection
of a low value reduces energy loss in the motor, but also reduces
load capability.
This parameter cannot be adjusted while the motor is running.
14-41 AEO Minimum Magnetisation
Range:
Function:
40%
*
[40 - 75%]
Enter the minimum allowable magnetisation for AEO. Selection
of a low value reduces energy loss in the motor, but can also
reduce resistance to sudden load changes.
14-42 Minimum AEO Frequency
Range:
Function:
10Hz
*
[5 - 40 Hz]
Enter the minimum frequency at which the Automatic Energy
Optimisation (AEO) is to be active.
14-43 Motor Cosphi
Range:
Function:
0.66
*
[0.40 - 0.95]
The Cos(phi) setpoint is automatically set for optimum AEO per-
formance during AMA. This parameter should normally not be
altered. However in some situations it may be necessary to en-
ter a new value to fine-tune.
2.13.7. Environment, 14-5*
These parameters help the frequency converter to operate under special environmental condi-
tions.
14-50 RFI 1
Option:
Function:
[0]
Off
[1]
*
On
Select
On
[1] to ensure the frequency converter complies with
EMC standards.
Select
Off
[0] only when the frequency converter is supplied
from an isolated mains source, i.e. IT mains. In this mode, the
internal RFI capacities (filter capacitors) between chassis and
the Mains RFI Filter circuit are cut off to avoid damage to the
intermediate circuit and to reduce the earth capacity currents
(according to IEC 61800-3).
VLT
®
AQUA Drive Programming Guide
2. Parameter Description
MG.20.O2.02 - VLT
®
is a registered Danfoss trademark
149
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