Synrm Motor Set-Up With Vvc - Danfoss VLT AutomationDrive FC 302 Programming Manual

Parameter Descriptions
Application Settings
Low inertia applications Increase parameter 1-17 Voltage filter
I /I <5 time const. by factor 5 to 10.
Load Motor
Reduce parameter 1-14 Damping
Gain.
Reduce parameter 1-66 Min. Current
at Low Speed (<100%).
Low inertia applications Keep the default values.
50>I /I >5
Load Motor
High inertia applications Increase parameter 1-14 Damping
I /I > 50 Gain, parameter parameter 1-15 Low
Load Motor
Speed Filter Time Const., and
parameter parameter 1-16 High
Speed Filter Time Const.
High load at low speed Increase parameter 1-17 Voltage filter
<30% (rated speed) 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 parameter 30-20 High
Starting Torque Time [s] and
parameter parameter 30-21 High
Starting Torque Current [%]). Working
at a current level higher than 100%
for a prolonged time can cause the
motor to overheat.
Table 3.5 Recommendations for Various Applications
If the motor starts oscillating at a certain speed, increase
1-14 Damping Gain. Increase the value in small steps.
Depending on the motor, this parameter can be set to
between 10% and 100% higher than the default value.
Application-specific adjustment when running Flux
Flux mode is the preferred control mode 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 chapter 3.3.3 Asynchronous Motor Set-up for application-
specific recommendations.

3.3.5 SynRM Motor Set-up with VVC

This section describes how to set up a SynRM motor with
VVC + .
Initial programming steps
To activate SynRM motor operation, select [5] Sync.
Reluctance in parameter 1-10 Motor Construction (FC-302
only).
MG33MJ02
Programming Guide
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. Use the motor nameplate data and the motor data
sheet to program the following parameters in the order
listed:
•
•
•
•
Run a complete AMA using parameter 1-29 Automatic
Motor Adaptation (AMA) [1] Enable Complete AMA or enter
the following parameters manually:
•
•
•
•
•
Application-specific adjustments
Start the motor at nominal speed. If the application does
not run well, check the VVC
provides application-specific recommendations:
+
Danfoss A/S © Rev. 10/2014 All rights reserved.
Parameter 1-23 Motor Frequency
Parameter 1-24 Motor Current
Parameter 1-25 Motor Nominal Speed
Parameter 1-26 Motor Cont. Rated Torque
Parameter 1-30 Stator Resistance (Rs)
Parameter 1-37 d-axis Inductance (Ld)
Parameter 1-44 d-axis Inductance Sat. (LdSat)
Parameter 1-45 q-axis Inductance Sat. (LqSat)
Parameter 1-48 Inductance Sat. Point
+
SynRM settings. Table 3.6
3 3
39