Danfoss FC 300 Programming Manual page 139

Parameter Descriptions
14-30 Current Lim Ctrl, Proportional Gain
Range: Function:
100 % [0 - 500 %] Enter the proportional gain value for the
*
current limit controller. Selection of a high
value makes the controller react faster. Too
high a setting leads to controller instability.
14-31 Current Lim Ctrl, Integration Time
Range: Function:
0.020 s [0.002 - 2.000 Controls the current limit control
*
s] integration time. Setting it to a lower
value makes it react faster. A setting too
low leads to control instability.
14-32 Current Lim Ctrl, Filter Time
Range:
1.0 ms [1.0 - 100.0 ms]
*
14-35 Stall Protection
Option: Function:
Select Enable [1] to enable the stall protection in
field-weakening in flux mode. Select Disable [0] if
you desire to disable it. This might cause the motor
to be lost. Par. 14-35 Stall Protection is active in Flux
mode only.
[0] Disabled
[1] Enabled
*
3.15.5 14-4* Energy Optimising
Parameters for adjusting the energy optimisation level in both
Variable Torque (VT) and Automatic Energy Optimization
(AEO) mode in par. 1-03 Torque Characteristics.
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 capabil-
ity.
This parameter cannot be adjusted while the
motor is running.
14-41 AEO Minimum Magnetisation
Range: Function:
Application [40 - 75 Enter the minimum allowable magnet-
dependent %] isation for AEO. Selection of a low
*
value reduces energy loss in the
motor, but can also reduce resistance
to sudden load changes.
FC 300 Programming Guide
14-42 Minimum AEO Frequency
Range:
10 Hz
14-43 Motor Cosphi
Range:
Application
dependent
Function:
3.15.6 14-5* Environment
These parameters help the frequency converter to operate
under special environmental conditions.
14-50 RFI Filter
Option:
[0]
[1]
14-51 DC Link Compensation
Option:
[0]
[1]
14-52 Fan Control
Select minimum speed of the main fan.
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.
Option:
[0]
[1]
[2]
[3]
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
Function:
[5 - 40 Hz] Enter the minimum frequency at which the
*
Automatic Energy Optimisation (AEO) is to be
active.
Function:
[0.40 - The Cos(phi) setpoint is automatically
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.
Function:
Off Select Off [0] only if the frequency converter is fed by an
isolated mains source (IT mains).
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.
On Select On [1] to ensure that the frequency converter
*
complies with EMC standards.
Function:
Off Disables DC Link Compensation.
On Enables DC Link Compensation.
*
Auto
*
On 50%
On 75%
On 100%
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Function:
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