Technical information

1-10 Motor construction
[0]
Asynchron
[1] PM Motor
non salient
4-13 Motor speed high limit [rpm]
x x
4-14 Motor speed high limit [Hz]
x x
4-16 Torque limit motor mode
x x
4-17 Torque limit generator mode
x x
4-18 Current limit
x x
4-19 Max output frequency
x x
4-58 Missing motor phase
x
14-40 VT Level
x
14-41 AEO Minimum Magnetisation
x
14-42 Minimum AEO Frequency
x
14-43 Motor Cosphi
x
1-10 Motor Construction
Select the motor construction type.
Option: Function:
[0] * Asynchron For asynchronous motors.
[1] PM, non salient
SPM
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.
NOTE
Motor construction can either be asynchronous or
permanent magnet (PM) motor.
3.3.3
1-14 - 1-17 VVC
plus
PM
The default control parameters for VVC
plus
PMSM control
core are optimized for HVAC applications and inertia load
in range of 50>Jl/Jm>5, were Jl is load inertia from the
application and jm is machine inertia.
For low inertia applications Jl/Jm<5 it is recommended
that 1-17 Voltage filter time const. is increased with a factor
of 5-10 and in some cases 1-14 Damping Gain should also
be reduced to improve performance and stability.
For High inertia applications Jl/Jm>>50 it is recommended
that 1-15 Low Speed Filter Time Const., 1-16 High Speed Filter
Time Const. and1-14 Damping Gain are increased to
improve performance and stability.
For high load at low speed <30% of rated speed it is
recommended that 1-17 Voltage filter time const. is
increased due to nonlinearity in the inverter at low speed.
1-14 Damping Gain
Range: Function:
120
%*
[0 -
250 %]
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.
High Damping gain will results in low dynamic
and low value will results in high dynamic. 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.
1-15 Low Speed Filter Time Const.
Range: Function:
Size
related*
[0.01 -
20.00 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.
1-16 High Speed Filter Time Const.
Range: Function:
Size
related*
[0.01 -
20.00 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.
1-17 Voltage filter time const.
Range: Function:
Size
related*
[0.001 -
1.000 s]
Machine Supply Voltage Filter 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.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG11CD02 - VLT
®
is a registered Danfoss trademark 37
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