Danfoss VLT AutomationDrive FC 300 Series Programming Manual page 136

Parameter Descriptions
NOTE
This parameter is not active when 1-10 Motor Construction
is set to [1] PM non salient SPM.
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.
NOTE
This parameter is not active when 1-10 Motor Construction
is set to [1] PM non salient SPM.
14-43 Motor Cosphi
Range: Function:
Size [0.40 - The Cos(phi) setpoint is automatically
related 0.95 ] 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.
3.15.5 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 [0] Off 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.
[1] On Select [1] On to ensure that the frequency converter
*
complies with EMC standards.
®
VLT AutomationDrive Programmming Guide
Illustration 3.60
14-51 DC Link Compensation
Option:
[0]
[1]
14-52 Fan Control
Select minimum speed of the main fan.
Option:
[0]
[1]
[2]
[3]
[4]
14-53 Fan Monitor
Option:
[0]
[1]
[2]
®
MG33ME02 - VLT is a registered Danfoss trademark
Function:
The rectified AC-DC voltage at the frequency
converter's DC link is associated with voltage ripples.
These ripples can increase in magnitude with
increased load. These ripples are undesirable because
they can generate current and torque ripples. A
compensation method is used to reduce these voltage
ripples at DC link. In general, DC link compensation is
recommended for most applications, but care must be
taken when operating in field weakening as it can
generate speed oscillations at the motor shaft. In field
weakening, it is recommended to turn DC link
compensation off.
Off Disables DC Link Compensation.
On Enables DC Link Compensation.
*
Function:
Auto Select [0] Auto 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.
On 50%
On 75%
On 100%
Auto (Low temp
env.)
Function:
Select which reaction the frequency converter
should take in case a fan fault is detected.
Disabled
Warning
*
Trip
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