Danfoss VLT AutomationDrive FC 301 Programming Manual page 105

Programming Guide | VLT® AutomationDrive FC 301/FC 302
This parameter corresponds to the inductance saturation of Lq. Ideally, this parameter has the same value as parameter 1-38 q-axis
Inductance (Lq). If the motor supplier provides an induction curve, enter the induction value at 200% of the nominal value.
1-46 Position Detection Gain
Default value: Size related
Setup: All setups
Data type: Uint16
Adjusts the amplitude of the test pulse during position detection at start. Adjust this parameter to improve the position measurement.
1-47 Torque Calibration
Default value: –
Setup:
All setups
Data type: Uint8
Use this parameter to optimize the torque estimate in the full speed range. The estimated torque is based on the shaft power, P
2
= P - R x I . Make sure that the R
m s
the drive. When this parameter is active, the drive calculates the R
optimal performance. Use this feature in cases when it is not possible to adjust parameter 1-30 Stator Resistance (Rs) on each drive to
compensate for the cable length, drive losses, and the temperature deviation on the motor.
Option Name
[0]* Off
[1] 1st start after pwr-up
[2] Every start
[3] 1st start with store
[4] Every start with store
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value is correct. The R value in this formula is equal to the power loss in the motor, the cable, and
s s
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
value during power-up, ensuring the optimal torque estimate and
s
Description
Calibrates at the 1st start-up after power-up and keeps this value
until reset by a power cycle.
Calibrates at every start-up, compensating for a possible change
in motor temperature since last start-up. The value is reset after a
power cycle.
The drive calibrates the torque at the 1st start-up after power-up.
This option is used to update motor parameters:
• Parameter 1-30 Stator Resistance (Rs).
• Parameter 1-33 Stator Leakage Reactance (X1).
• Parameter 1-34 Rotor Leakage Reactance (X2).
• Parameter 1-37 d-axis Inductance (Ld).
The drive calibrates the torque at every start-up, compensating
for a possible change in motor temperature since last start-up.
This option is used to update motor parameters:
• Parameter 1-30 Stator Resistance (Rs).
• Parameter 1-33 Stator Leakage Reactance (X1).
• Parameter 1-34 Rotor Leakage Reactance (X2).
• Parameter 1-37 d-axis Inductance (Ld).
Parameter Descriptions
Range, 20 - 200%
0
True
Option
–
True
AU275636650261en-003201 / 130R0334 |
shaft
105