Synrm Motor Set-Up With Vvc - Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

Commissioning
Test Motor Operation
1. Start the motor at low speed (100–200 RPM). If
the motor does not turn, check installation,
general programming, and motor data.
2. Check if the start function in parameter 1-70 PM
Start Mode fits the application requirements.
Rotor detection
This function is the recommended choice for applications
where the motor starts from standstill, for example pumps
5 5
or conveyors. On some motors, an acoustic sound is heard
when the impulse is sent out. This does not harm the
motor.
Parking
This function is the recommended choice for applications
where the motor is rotating at slow speed, for example
windmilling in fan applications. Parameter 2-06 Parking
Current and parameter 2-07 Parking Time can be adjusted.
Increase the factory setting of these parameters for
applications with high inertia.
Start the motor at nominal speed. If the application does
not run well, check the VVC
dations in different applications can be found in Table 5.7.
Application
Low inertia applications
I /I <5
Load Motor
Low inertia applications
50>I /I
Load Motor
High inertia applications
I /I > 50
Load Motor
High load at low speed
<30% (rated speed)
Table 5.8 Recommendations in Different Applications
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, a good value for this
parameter can be 10% or 100% higher than the default
value.
30
+
PM settings. Recommen-
Settings
Parameter 1-17 Voltage filter time
const. to be increased by factor 5–
10.
Parameter 1-14 Damping Gain should
be reduced.
Parameter 1-66 Min. Current at Low
Speed should be reduced (<100%).
Keep calculated values.
>5
Parameter 1-14 Damping Gain,
parameter 1-15 Low Speed Filter Time
Const., and parameter 1-16 High
Speed Filter Time Const. should be
increased.
Parameter 1-17 Voltage filter time
const. should be increased.
Parameter 1-66 Min. Current at Low
Speed should be increased (>100%
for a prolonged time can overheat
the motor).
Danfoss A/S © 01/2015 All rights reserved.
®
VLT AQUA Drive FC 202
The starting torque can be adjusted in parameter 1-66 Min.
Current at Low Speed. 100% provides nominal torque as
starting torque.

5.4.5 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 programme 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:
Application
Low-inertia applications
I /I
Load Motor
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 5.9
Settings
Increase parameter 1-17 Voltage filter
<5 time const. by factor 5 to 10.
Reduce parameter 1-14 Damping
Gain.
Reduce parameter 1-66 Min. Current
at Low Speed (<100%).
+
MG20MC22