Danfoss VLT AQUA Drive FC 200 Programming Manual page 43

Parameter Description
1-10 Motor Construction
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
Function
14-40 VT Level
14-41 AEO Minimum Magneti-
zation
14-42 Minimum AEO Frequency
14-43 Motor Cos-Phi
Table 3.5
1-10 Motor Construction
Select the motor construction type.
Option: Function:
[0] Asynchron For asynchronous motors.
[1] PM, non salient For permanent magnet (PM) motors.
SPM Note that PM motors are divided into
two groups, with either surface mounted
(non-salient) or interior (salient) magnets.
NOTICE!
Only available up to 30 hp [22 kW]
motor power.
NOTICE!
Motor construction can either be asynchronous or
permanent magnet (PM) motor.
3.3.3 1-14 - 1-17 VVC plus
The default control parameters for VVC
core are optimized for 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. be increased with a
factor of 5‒10 and in some cases 1-14 Damping Gain
should also be reduced to improve performance and
stability.
®
VLT AQUA Drive Programming Guide
[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
PM
plus
PMSM control
®
MG20O622 - VLT is a registered Danfoss trademark
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 be 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 non-linearity in the inverter at low speed.
1-14 Damping Gain
Range:
120 % [0 - 250 %]
*
1-15 Low Speed Filter Time Const.
Range: Function:
Size related [0.01 - 20 High pass-filter damping time constant
*
s] 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 becomes unstable. This time
constant is used below 10% rated
speed.
1-16 High Speed Filter Time Const.
Range: Function:
Size related [0.01 - 20 High pass-filter damping time constant
*
s] 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 becomes unstable. This time
constant is used above 10% rated
speed.
1-17 Voltage filter time const.
Range: Function:
Size [0.001 - 1 Machine Supply Voltage Filter Time
related 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.
3
Function:
3-17
3