Danfoss VLT AutomationDrive FC 301 Programming Manual page 85

Programming Guide | VLT® AutomationDrive FC 301/FC 302
When running in flux mode, or in VVC+ mode, extra motor data is required to 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.
Parameter 1-30 Stator Resistance (Rs).
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Parameter 1-31 Rotor Resistance (Rr).
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Parameter 1-33 Stator Leakage Reactance (X1).
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Parameter 1-34 Rotor Leakage Reactance (X2).
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Parameter 1-35 Main Reactance (Xh).
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Parameter 1-36 Iron Loss Resistance (Rfe).
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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 mode 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.
Table 11: Recommendations for Flux Applications
Application
Low-inertia applications
High-inertia applications
High load at low speed
No-load application
Flux sensorless control principle only
© 2024.09
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 in 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 a
smoother motor operation by reducing torque ripple and vibra-
tion.
Adjust parameter 1-53 Model Shift Frquency.
Example 1: If the motor oscillates at 5 Hz, and dynamic per-
formance is required at 15 Hz, set parameter 1-53 Model Shift
Frquency 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 oscillations or drive tripping.
AU275636650261en-003201 / 130R0334 |
Parameter Descriptions
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