Danfoss VLT AutomationDrive FC 301 Programming Manual page 87

VLT AutomationDrive FC 301/302
Programming Guide
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
and the drive. When this parameter is active, the drive calculates the R
mate and 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.
Op- Name Description
tion
[0]* Off
st
[1] 1 start after Calibrates at the 1
pwr-up
[2] Every start 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.
st
[3] 1 start with The drive calibrates the torque at the 1
store parameters:
•
•
•
•
[4] Every start The drive calibrates the torque at every start-up, compensating for a possible change in motor temper-
with store ature since last start-up. This option is used to update motor parameters:
•
•
•
•
Parameter 1-48 d-axis Inductance Sat. Point
Table 99: Parameter 1-48 d-axis Inductance Sat. Point
1-48 d-axis Inductance Sat. Point
Default value: Size related
Conversion index: 0
Run an AMA to set the value of this parameter. Edit the value manually only when the application requires a value other than
determined by AMA.
Select the d-axis inductance saturation point. The drive uses this value to optimize the performance of SynRM motors. Select the
value that matches the point where the inductance equals the mean value of parameter 1-37 d-axis Inductance (Ld) and parameter
1-44 d-axis Inductance Sat. (LdSat), as percentage of nominal current.
Parameter 1-49 q-axis Inductance Sat. Point
Table 100: Parameter 1-49 q-axis Inductance Sat. Point
1-49 q-axis Inductance Sat. Point
Default value: Size related
Conversion index: 0
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value is correct. The R value in this formula is equal to the power loss in the motor, the cable,
s s
st
start-up after power-up and keeps this value until reset by a power cycle.
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 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 type: Range, 1 - 500%
Data type: Int16
N O T I C E
Parameter type: Range, 1 - 200%
Data type: Uint16
value during power-up, ensuring the optimal torque esti-
s
st
start-up after power-up. This option is used to update motor
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: False
AU275636650261en-000101 / 130R0334 | 87
Parameter Descriptions
shaft