Danfoss VLT FC 102 Programming Manual page 54

Parameter Descriptions
1-10 Motor Construction
Select the motor construction type.
Option:
[1] PM, non
salient SPM
3 3
[2] PM, salient
IPM
[5] SynRM
[6] PMaSynRM
1-11 Motor Model
Option:
[1] Std.
Asynchron
[2] Std. PM, non
salient
[10] Danfoss
OGD LA10
[11] Danfoss
OGD V210
52
®
VLT
Function:
Use for non-salient PM motors.
Use for IPM motors, interior-
mounted magnet.
PM motors are divided into 2
groups, with either surface-
mounted (SPM)/non-salient
magnets or interior-mounted (IPM)/
salient magnets.
Use for synchronous reluctance
motors.
NOTICE
This option has the following
firmware version limitations:
•
Version 4.2x and
earlier – do not use
this option. There is a
risk of damage to the
frequency converter.
•
Version 4.3x – use
this option only when
flying start is enabled
in
parameter 1-73 Flying
Start.
Use for PMaSynRM, Permanent
Magnet assisted synchronous
reluctance motors.
Function:
Automatically sets the factory values for the
selected motor. If the default value Std.
Asynchron is used, determine settings
manually according to the selection
parameter 1-10 Motor Construction.
Default motor model when [0] Asynchron is
selected in parameter 1-10 Motor Construction.
Selectable when [1] PM, non-salient SPM is
selected in parameter 1-10 Motor Construction.
Selectable when [1] PM, non-salient SPM is
selected in parameter 1-10 Motor Construction.
Only available for T4, T5 in 1.5–3 kW (2.0–4.0
hp). Settings are loaded automatically for this
specific motor.
Selectable when [1] PM, non-salient SPM is
selected in parameter 1-10 Motor Construction.
Only available for T4, T5 in 0.75–3 kW (1.0–
4.0 hp). Settings are loaded automatically for
this specific motor.
Danfoss A/S © 10/2019 All rights reserved.
HVAC Drive FC 102
3.3.4 1-14 to 1-17 VVC
The default control parameters for VVC
core are optimized for applications and inertia load in the
range of 50>Jl/Jm>5. Jl is load inertia from the application
and Jm is machine inertia.
For low inertia applications (Jl/Jm<5), it is recommended
that parameter 1-17 Voltage filter time const. is increased
with a factor of 5–10. Sometimes,
parameter 14-08 Damping Gain Factor should also be
reduced to improve performance and stability.
For high-inertia applications (Jl/Jm>50), increase
parameter 1-15 Low Speed Filter Time Const. and
parameter 1-16 High Speed Filter Time Const. to improve
performance and stability.
For high load at low speed (<30% of rated speed), it is
recommended that parameter 1-17 Voltage filter time const.
is increased due to non-linearity in the inverter at low
speed.
1-14 Damping Gain
Range:
120 %
*
1-15 Low Speed Filter Time Const.
Range:
Size
related
*
1-16 High Speed Filter Time Const.
Range:
Size
related
*
+
PM
+
PM motor control
Function:
[0 - 250 %] The damping gain stabilizes the PM
machine to run the PM machine
smooth and stable. The value of
damping gain controls the dynamic
performance of the PM machine.
High damping gain gives low
dynamic performance, and low
damping gain gives high 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 becomes unstable.
Function:
[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 low, the control becomes
unstable. This time constant is used
below 10% rated speed.
Function:
[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 low, the control becomes
M0010001