Asynchronous Motor Set-Up - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Commissioning
press [OK]. (This changes the default settings for
a number of basic parameters).
6. Press [Main Menu] on the LCP.
7. Press the navigation keys to scroll to
parameter 0-01 Language.
8. Select the language and press [OK].
9. If a jumper wire is in place between control
terminals 12 and 27, leave
parameter 5-12 Terminal 27 Digital Input at factory
default. Otherwise, select [0] No Operation in
5 5
parameter 5-12 Terminal 27 Digital Input.
10. Make the application-specific settings in the
following parameters:
10a
10b
10c
10d
10e

5.4.3 Asynchronous Motor Set-up

Enter the following motor data. Find the information on
the motor nameplate.
1. Parameter 1-20 Motor Power [kW] or
parameter 1-21 Motor Power [HP].
2. Parameter 1-22 Motor Voltage.
3. Parameter 1-23 Motor Frequency.
4. Parameter 1-24 Motor Current.
5. Parameter 1-25 Motor Nominal Speed.
When running in flux control principle, or for optimum
performance in VVC
set up the following parameters. Find the data in the
motor datasheet (this data is typically not available on the
motor nameplate). Run a complete automatic motor
adaptation (AMA) using parameter 1-29 Automatic Motor
Adaptation (AMA) [1] Enable Complete AMA or enter the
parameters manually. Parameter 1-36 Iron Loss Resistance
(Rfe) is always entered manually.
1. Parameter 1-30 Stator Resistance (Rs).
2. Parameter 1-31 Rotor Resistance (Rr).
3. Parameter 1-33 Stator Leakage Reactance (X1).
4. Parameter 1-34 Rotor Leakage Reactance (X2).
5. Parameter 1-35 Main Reactance (Xh).
6. Parameter 1-36 Iron Loss Resistance (Rfe).
26
®
VLT
Parameter 3-02 Minimum Reference.
Parameter 3-03 Maximum Reference.
Parameter 3-41 Ramp 1 Ramp Up Time.
Parameter 3-42 Ramp 1 Ramp Down
Time.
Parameter 3-13 Reference Site. Linked to
Hand/Auto Local Remote.
+
mode, extra motor data is required to
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AutomationDrive FC 301/302
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 control principle is the preferred control principle 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 Table 5.6 for application-related recommendations.
Application
Low-inertia applications
High-inertia applications
High load at low speed
No-load application
Flux sensorless control
principle only
Table 5.6 Recommendations for Flux Applications
+
Settings
Keep calculated values.
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.
Parameter 1-66 Min. Current at Low
Speed.
Increase current to a value between
default and maximum depending on
the application.
Adjust parameter 1-18 Min. Current at
No Load to achieve smoother motor
operation by reducing torque ripple
and vibration.
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 behaviour to
make sure that the model shift
frequency is not reduced too much.
Symptoms of inappropriate model
shift frequency are motor oscillations
or frequency converter tripping.
MG33AQ02