4.
Parameter 1-34 Rotor Leakage Reactance (X2)
.
5.
Parameter 1-35 Main Reactance (Xh)
.
6.
Parameter 1-36 Iron Loss Resistance (Rfe)
.
Application-specific adjustment when running VVC
+
VVC
+
is the most robust control mode. In most situations,
it provides optimum performance without further
adjustments. Run a complete AMA for best performance.
Application-specific adjustment when running Flux
Flux mode is the preferred control mode for optimum
shaft performance in dynamic applications. Perform an
AMA since this control mode requires precise motor data.
Depending on the application, further adjustments may be
required.
See
for application-related recommendations.
Application
Settings
Low-inertia applications
Keep calculated values.
High-inertia applications
Parameter 1-66 Min. Current at Low
Speed
.
Increase current to a value between
default and maximum depending on
the application.
Set ramp times matching the
application. Too fast ramp up causes
an overcurrent or overtorque. Too
fast ramp-down causes an
overvoltage trip.
High load at low speed
Parameter 1-66 Min. Current at Low
Speed
.
Increase current to a value between
default and maximum depending on
the application.
No-load application
Adjust
parameter 1-18 Min. Current at
No Load
to achieve smoother motor
operation by reducing torque ripple
and vibration.
Application
Settings
Flux sensorless only
Adjust
parameter 1-53 Model Shift
Frequency
.
Example 1: If the motor oscillates at
5 Hz and dynamics performance is
required at 15 Hz, set
parameter 1-53 Model Shift Frequency
to 10 Hz.
Example 2: If the application
involves dynamic load changes at
low speed, reduce
parameter 1-53 Model Shift Frequency
.
Observe the motor behavior to
make sure that the model shift
frequency is not reduced too much.
Symptoms of inappropriate model
shift frequency are motor oscillations
or adjustable frequency drive
tripping.
Table 5.7 Recommendations for Flux Applications
5.4.5 Permanent Magnet Motor Set-up
NOTICE!
Only use permanent magnet (PM) motor with fans and
pumps.
Initial Programming Steps
1.
Activate PM motor operation
Parameter 1-10 Motor Construction
, select
(1) PM,
non-salient SPM
2.
Set
parameter 0-02 Motor Speed Unit
to
[0] RPM
Programming motor data
After selecting PM motor in
Parameter 1-10 Motor
Construction
, the PM motor-related parameters in
parameter groups
1-2* Motor Data
,
1-3* Addl. Motor Data
and
1-4*
are active.
The necessary data can be found on the motor nameplate
and in the motor data sheet.
Program the following parameters in the listed order
1.
Parameter 1-24 Motor Current
2.
Parameter 1-26 Motor Cont. Rated Torque
3.
Parameter 1-25 Motor Nominal Speed
4.
Parameter 1-39 Motor Poles
5.
Parameter 1-30 Stator Resistance (Rs)
Enter line to common stator winding resistance
(R
s
). If only line-line data are available, divide the
Start-up and Functional Tes...
VLT
®
AutomationDrive FC 302 Low Harmonic Drive
132–630 kW
58
Danfoss A/S © Rev. 04/2015 All rights reserved.
MG37A322
5
5
