Danfoss VLT HVAC Basic Drive FC 101 Programming Manual page 34

Parameters
Parameter 1-10 Motor
Construction
Parameter 4-19 Max Output
3 3
Frequency
Parameter 4-58 Missing Motor
Phase Function
Parameter 14-01 Switching
Frequency
Parameter 14-03 Overmodulation
Parameter 14-07 Dead Time
Compensation Level
Parameter 14-08 Damping Gain
Factor
Parameter 14-09 Dead Time Bias
Current Level
Parameter 14-10 Mains Failure
Parameter 14-11 Mains Fault
Voltage Level
Parameter 14-12 Function at
Mains Imbalance
Parameter 14-27 Action At
Inverter Fault
Parameter 14-40 VT Level
Parameter 14-41 AEO Minimum
Magnetisation
Parameter 14-44 d-axis current
optimization for IPM
Parameter 14-50 RFI Filter
Parameter 14-51 DC-Link Voltage
Compensation
Parameter 14-55 Output Filter
Parameter 14-64 Dead Time
Compensation Zero Current Level
Parameter 14-65 Speed Derate
Dead Time Compensation
Parameter 30-22 Locked Rotor
Protection
Parameter 30-23 Locked Rotor
Detection Time [s]
Table 3.2 Active Parameters
1-10 Motor Construction
Option:
[0] Asynchron
*
[1] PM, non-
salient SPM
[3] PM, salient
IPM, Sat.
32
®
VLT HVAC Basic Drive FC 101
[1] PM,
[0] non-
Asynchron salient
SPM
x x
x x
x x
x x
x x
x x
x 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 with
surface-mounted (non-salient) magnets.
Refer to parameter 1-14 Damping Gain to
parameter 1-17 Voltage filter time const. for
details about optimizing the motor
operation.
For permanent magnet (PM) motors with
interior (salient) magnets, with inductance
saturation control.
Danfoss A/S © 04/2018 All rights reserved.
3.2.3 1-14 to 1-17 VVC
[3] PM,
salient
IPM,
The default control parameters for VVC
Sat.
core are optimized for applications and inertia load in the
range of 50>Jl/Jm>5. Jl is load inertia from the application
x
and Jm is machine inertia.
For low inertia applications (Jl/Jm<5), it is recommended
x
that parameter 1-17 Voltage filter time const. is increased
with a factor of 5–10. Sometimes,
x
parameter 14-08 Damping Gain Factor should also be
x
reduced to improve performance and stability.
For high-inertia applications (Jl/Jm>50), increase
x
parameter 1-15 Low Speed Filter Time Const. and
parameter 1-16 High Speed Filter Time Const. to improve
x
performance and stability.
For high load at low speed (<30% of rated speed), it is
x
recommended that parameter 1-17 Voltage filter time const.
is increased due to non-linearity in the inverter at low
x
speed.
x
1-14 Damping Gain
Range:
x
120 [0 - The parameter stabilizes the PM motor to ensure
x
% 250 %] smooth and stable operation. The value of
*
damping gain controls the dynamic performance
x
of the PM motor. Low damping gain results in
x high dynamic performance and a high value
results in a low dynamic performance. The
dynamic performance is related to the motor data
x
and load type. If the damping gain is too high or
low, the control becomes unstable.
x
1-15 Low Speed Filter Time Const.
x
Range:
x
Size [0.01 -
related 20 s]
*
x
x
x
1-16 High Speed Filter Time Const.
Range:
Size [0.01 -
related 20 s]
*
+
PM
+
PM motor control
Function:
Function:
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
becomes unstable. This time constant is
used below 10% rated speed.
Function:
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
becomes unstable. This time constant is
used above 10% rated speed.
MG18B502