3.15.5 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in
both Variable Torque (VT) and Automatic Energy Optimi-
zation (AEO) mode in
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:
Size related
*
[40 - 75
%]
Enter the minimum allowable magneti-
sation 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:
10 Hz
*
[5 - 40 Hz] Enter the minimum frequency at which the
Automatic Energy Optimisation (AEO) is to be
active.
14-43 Motor Cosphi
Range:
Function:
Application
dependent
*
[0.40 -
0.95 ]
The Cos(phi) setpoint is automatically
set for optimum AEO performance.
This parameter should normally not be
altered. However in some situations it
may be necessary to enter a new value
to fine-tune.
3.15.6 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
This parameter is only available for FC 302. It is not relevant toFC
301 due to different design and shorter motor cables.
Option: Function:
[0]
Off Select
Off
[0] if the frequency converter is fed by an
isolated mains source (IT mains).
If a filter is used, select Off [0] during charging to prevent
a high leakage current making the RCD switch.
In this mode, the internal RFI filter capacitors between
chassis and the mains RFI filter circuit are cut-out to
reduce the ground capacity currents.
14-50 RFI Filter
This parameter is only available for FC 302. It is not relevant toFC
301 due to different design and shorter motor cables.
Option: Function:
[1]
*
On Select
On
[1] to ensure that the frequency converter
complies with EMC standards.
14-51 DC Link Compensation
Option:
Function:
[0]
Off
Disables DC Link Compensation.
[1]
*
On
Enables DC Link Compensation.
14-52 Fan Control
Select minimum speed of the main fan.
Option:
Function:
[0]
*
Auto
Select
Auto
[0] to run fan only when
internal temperature in frequency
converter is in range 35
°
C to approx.
55
°
C.
Fan runs at low speed below 35
°
C, and
at full speed at approx. 55
°
C.
[1]
On 50%
[2]
On 75%
[3]
On 100%
[4]
Auto (Low temp
env.)
14-53 Fan Monitor
Option:
Function:
Select which reaction the frequency converter
should take in case a fan fault is detected.
[0]
Disabled
[1]
*
Warning
[2]
Trip
Parameter Descriptions
FC 300 Programming Guide
MG.33.MB.02 - VLT
®
is a registered Danfoss trademark
143
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