Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 39

Parameter Description
3.3.2 1-1* Motor Selection
3.3.3 SynRM Motor Set-up with VVC
This section describes how to set up a SynRM motor with
+
VVC .
NOTICE
The SmartStart wizard covers the basic configuration of
SynRM motors.
Initial programming steps
To activate SynRM motor operation, select [5] Sync.
Reluctance in parameter 1-10 Motor Construction.
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 datasheet to
program the following parameters in the order listed:
•
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 using parameter 1-29 Automatic
Motor Adaptation (AMA) [1] Enable Complete AMA or enter
the following parameters manually:
•
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.
Application-specific adjustments
Start the motor at nominal speed. If the application does
+
not run well, check the VVC
provides application-specific recommendations:
Application Settings
Low-inertia applications Increase parameter 1-17 Voltage filter
I /I <5 time const. by factor 5–10.
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
Increase parameter 1-14 Damping
High-inertia applications
I /I > 50 Gain, parameter 1-15 Low Speed Filter
Load Motor
Time Const., and parameter 1-16 High
Speed Filter Time Const.
MG16H202
Programming Guide
+
SynRM settings. Table 3.3
Danfoss A/S © 05/2016 All rights reserved.
Application Settings
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.
Working at a current level higher
than 100% for a prolonged time can
cause the motor to overheat.
Dynamic applications Increase parameter 14-41 AEO
Minimum Magnetisation for highly
dynamic applications. Adjusting
parameter 14-41 AEO Minimum
Magnetisation ensures a good
balance between energy efficiency
and dynamics. Adjust
parameter 14-42 Minimum AEO
Frequency to specify the minimum
frequency at which the frequency
converter should use minimum
magnetization.
Motor sizes less than 18 Avoid short ramp-down times.
kW
Table 3.3 Recommendations for Various Applications
If the motor starts oscillating at a certain speed, increase
parameter 1-14 Damping Gain. Increase the damping gain
value in small steps. Depending on the motor, this
parameter can be set to 10–100% higher than the default
value.
1-10 Motor Construction
Select the motor construction type.
Option: Function:
[0] Asynchron For asynchronous motors.
*
[1] PM, non Use for non-salient PM motors.
salient SPM
[5] Sync. Use for synchronous reluctance motors.
Reluctance
NOTICE
This option has the following
firmware version limitations:
•
Version 1.42 – use this
option only when flying
start is enabled in
parameter 1-73 Flying Start.
37
3 3