1.
1.
a.
b.
c.
d.
2.
-
-
Table 69: Recommendations for Various Applications
Application
Settings
Low-inertia applications
I
Load
/I
Motor
<5
Increase
parameter 1-17 Voltage Filter Time Const.
by factor 5–10.
Reduce
parameter 1-14 Damping Gain
.
Reduce
parameter 1-66 Min.Current at Low Speed
(<100%).
Low-inertia applications
50>I
Load
/I
Motor
>5
Keep the default values.
High-inertia applications
I
Load
/I
Motor
>50
Increase
parameter 1-14 Damping Gain
,
parameter 1-15 Low Speed Filter Time Const.
, and
parame-
ter 1-16 High Speed Filter Time Const
.
High load at low speed <30%
(rated speed)
Increase
parameter 1-17 Voltage filter time const
. Increase
parameter 1-66 Min. Current at Low
Speed
to adjust the starting torque. 100% current provides nominal torque as starting torque.
This parameter is independent of
parameter 30-20 High Starting Torque Time [s]
and
parameter
30-21 High Starting Torque Current [%]
). Working at a current level higher than 100% for a pro-
longed time can cause the motor to overheat.
If the motor starts oscillating at a certain speed, increase
parameter 1-14 Damping Gain
. Increase the value in small steps. Depending
on the motor, this parameter can be set to 10–100% higher than the default value.
Application-specific adjustment when running flux
Flux control principle is the preferred control principle for optimum shaft performance in dynamic applications. Perform an AMA
because this control mode requires precise motor data. Depending on the application, further adjustments may be required.
See
4.2.2.1 Asynchronous Motor Set-up
for application-specific recommendations.
4.2.2.3 SynRM Motor Set-up with VVC+
This section describes how to set up a SynRM motor with VVC
+
.
N O T I C E
The SmartStart wizardcovers the basic configuration of SynRM motors.
4.2.2.3.1 Initial Programming
Procedure
Select
[5] Sync. Reluctance
in
parameter 1-10 Motor Construction
to activate SynRM motor operation.
4.2.2.3.2 Programming Motor Data
After performing the initial programming steps, the SynRM motor-related parameters in
parameter groups 1-2* Motor Data
,
1-3* Adv.
Motor Data
, and
1-4* Adv. Motor Data II
are active. Find the required motor data on the motor nameplate and in the motor data
sheet.
Procedure
Program in the following order:
Parameter 1-23 Motor Frequency
.
Parameter 1-24 Motor Current
.
Parameter 1-25 Motor Nominal Speed
.
Parameter 1-26 Motor Cont. Rated Torque
.
Run a complete AMA.
Select
[1] Enable Complete AMA
in
parameter 1-29 Automatic Motor Adaptation (AMA)
, or
Enter the following manually:
Parameter 1-30 Stator Resistance (Rs)
.
Parameter 1-37 d-axis Inductance (Ld)
.
Parameter 1-44 d-axis Inductance Sat. (LdSat)
.
AU373327181955en-000101 / 130R1208 | 63
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
