Danfoss VLT FC 103 Programming Manual page 38

Parameter Description
1-14 Damping Gain
Range: Function:
of the PM machine. High damping gain
will give high dynamic performance and
low damping gain will give low dynamic
performance. The dynamic performance is
related to the machine data and load type.
If the damping gain is too high or low the
control will become unstable.
120% [0-250%]
*
1-15 Low Speed Filter Time Const.
Range: Function:
Size related [0.01 - 20 s] High pass-filter damping time
*
constant determines the response
time to load steps. Obtain quick
control through a short damping
time constant. However, if this value
is too short, the control gets
unstable. This time constant is used
below 10% rated speed.
Size related [0.01 - 20.00
*
s]
1-16 High Speed Filter Time Const.
Range: Function:
Size related [0.01 - 20 s] High pass-filter damping time
*
constant determines the response
time to load steps. Obtain quick
control through a short damping
time constant. However, if this
value is too short, the control gets
unstable. This time constant is used
above 10% rated speed.
Size related [0.01-20.00 s]
*
1-17 Voltage filter time const.
Range:
Size [0.001 - 1 s] Machine Supply Voltage Filter
related Time constant is used for reducing
*
the influence of high frequency
ripples and system resonances in
the calculation of machine supply
voltage. Without this filter, the
ripples in the currents can distort
the calculated voltage and affects
the stability of the system.
Size [0.001-1.000 s]
related
*
3.3.4 1-2* Motor Data
Parameter group 1-2* comprises input data from the
nameplate on the connected motor.
®
VLT Refrigeration Drive Programming Guide
Function:
®
MG16H102 - VLT is a registered Danfoss trademark
NOTE
Changing the value of these parameters affects the setting
of other parameters.
NOTE
1-20 Motor Power [kW], 1-21 Motor Power [HP], 1-22 Motor
Voltage and 1-23 Motor Frequency will not have effect
when 1-10 Motor Construction = [1] PM, non salient SPM.
1-20 Motor Power [kW]
Range: Function:
Size [ 0.09 - Enter the nominal motor power in kW
related 3000.00 according to the motor nameplate data.
*
kW] The default value corresponds to the
nominal rated output of the unit.
Depending on the choices made in
0-03 Regional Settings, either 1-20 Motor
Power [kW] or 1-21 Motor Power [HP] is
made invisible.
NOTE
This parameter cannot be adjusted
while the motor is running.
1-21 Motor Power [HP]
Range: Function:
Size [ 0.09 - Enter the nominal motor power in HP
related 3000.00 hp] according to the motor nameplate data.
*
The default value corresponds to the
nominal rated output of the unit.
Depending on the choices made in
0-03 Regional Settings, either 1-20 Motor
Power [kW] or 1-21 Motor Power [HP] is
made invisible.
NOTE
This parameter cannot be adjusted
while the motor is running.
1-22 Motor Voltage
Range: Function:
Size [ 10 - Enter the nominal motor voltage
related 1000 V] according to the motor nameplate data.
*
The default value corresponds to the
nominal rated output of the unit.
NOTE
This parameter cannot be adjusted
while the motor is running.
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