Danfoss VLT AutomationDrive FC 301 Programming Manual page 94

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 1-63 Slip Compensation Time Constant has no effect when parameter 1-10 Motor Construction = [1] PM, nonsalient SPM.
Enter the slip compensation reaction speed. A high value results in slow reaction, and a low value results in quick reaction. If low-
frequency resonance problems arise, use a longer time setting.
Parameter 1-64 Resonance Damping
Table 115: Parameter 1-64 Resonance Damping
1-64 Resonance Damping
Default value: Size related
Conversion index: 0
Parameter 1-64 Resonance Damping has no effect when parameter 1-10 Motor Construction = [1] PM, nonsalient SPM.
Enter the resonance damping value. Set parameter 1-64 Resonance Damping and parameter 1-65 Resonance Damping Time Constant
to help eliminate high-frequency resonance problems. To reduce resonance oscillation, increase the value of parameter 1-64 Reso-
nance Damping.
Parameter 1-65 Resonance Damping Time
Table 116: Parameter 1-65 Resonance Damping Time Constant
1-65 Resonance Damping Time Constant
Default value: 5 ms
Conversion index: -3
Parameter 1-65 Resonance Damping Time Constant has no effect when parameter 1-10 Motor Construction = [1] PM, non-salient
SPM.
Set parameter 1-64 Resonance Damping and parameter 1-65 Resonance Damping Time Constant to help eliminate high-frequency res-
onance problems. Enter the time constant that provides the best dampening.
Parameter 1-66 Min. Current at Low Speed
Table 117: Parameter 1-66 Min. Current at Low Speed
1-66 Min. Current at Low Speed
Default value: Size related
Conversion index: 0
If parameter 40-50 Flux Sensorless Model Shift is set to [0] Off, this parameter is ignored.
Enter the minimum motor current at low speed, see parameter 1-53 Model Shift Frequency. Increasing this current improves motor
torque at low speed. Parameter 1-66 Min. Current at Low Speed is enabled when parameter 1-00 Configuration Mode is set to [0] Speed
open loop only. The drive runs with constant current through motor for speeds below 10 Hz. For speeds above 10 Hz, the motor flux
model in the drive controls the motor. Parameter 4-16 Torque Limit Motor Mode and/or parameter 4-17 Torque Limit Generator Mode
automatically adjust parameter 1-66 Min. Current at Low Speed. The parameter with the highest value adjusts parameter 1-66 Min.
Current at Low Speed. The current setting in parameter 1-66 Min. Current at Low Speed is composed of the torque generating current
and the magnetizing current. Example: Set parameter 4-16 Torque Limit Motor Mode to 100% and set parameter 4-17 Torque Limit
Generator Mode to 60%. Parameter 1-66 Min. Current at Low Speed automatically adjusts to about 127%, depending on the motor
size.
94 | Danfoss A/S © 2022.12
N O T I C E
Parameter type: Range, 0 - 1000%
Data type: Uint16
N O T I C E
Parameter type: Range, 1 - 50 ms
Data type: Uint8
N O T I C E
Parameter type: Range, 1 - 200%
Data type: Uint32
N O T I C E
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334