Danfoss VLT Series Programming Manual page 39

Parameter Description
1-10 Motor construction
2-02 DC Braking Time
2-03 DC Brake Cut In Speed [rpm]
2-04 DC Brake Cut In Speed [Hz]
3 3
2-10 Brake Function
2-11 Brake Resistor
2-12 Brake Power Limit
2-13 Brake Power Monitoring
2-15 Brake Check
2-16 AC Brake Max Current
2-17 Over-voltage Control
4-10 Motor speed direction
4-11 Motor speed low limit [rpm]
4-12 Motor speed low limit [Hz]
4-13 Motor speed high limit [rpm]
4-14 Motor speed high limit [Hz]
4-16 Torque limit motor mode
4-17 Torque limit generator mode
4-18 Current limit
4-19 Max output frequency
4-58 Missing motor phase
14-40 VT Level
14-41 AEO Minimum Magnetisation
14-42 Minimum AEO Frequency
14-43 Motor Cosphi
1-10 Motor Construction
Select the motor construction type.
Option:
[0] Asynchron
*
[1] PM, non salient
SPM
NOTE
Motor construction can either be asynchronous or
permanent magnet (PM) motor.
1-14 Damping Gain
Range:
120 [0 -
% 250 %]
*
38
VLT
[0] [1] PM Motor
Asynchron non salient
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Function:
For asynchronous motors.
For permanent magnet (PM) motors.
Note that PM motors are divided into
two groups, with either surface
mounted (non salient) or interior
(salient) magnets.
NOTE
Only available up to 22 kW motor
power.
Function:
The damping gain will stabilize the PM machine
in order to run the PM machine smooth and
stable. The value of Damping gain will control
the dynamic performance of the PM machine.
Low Damping gain will results in low dynamic
and high value will results in high dynamic. The
MG.11.CC.02 - VLT
®
HVAC Drive Programming Guide
1-14 Damping Gain
Range:
x
x
1-15 Low Speed Filter Time Const.
Range:
x
Size
x
related
*
x
x
x
x
x
1-16 High Speed Filter Time Const.
x
x Range:
x
Size
x
related
*
1-17 Voltage filter time const.
Range:
Size
related
*
3.3.3 1-2* Motor Data
Parameter group 1-2* comprises input data from the
nameplate on the connected motor.
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.
®
is a registered Danfoss trademark
Function:
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.
Function:
[0.01 - High pass-filter damping time
20.00 s] 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.
Function:
[0.01 - High pass-filter damping time
20.00 s] 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.
Function:
[0.001 - Machine Supply Voltage Filter Time
1.000 s] 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.