Danfoss VLT FC 102 Programming Manual page 105

Programming Guide | VLT® HVAC Drive FC 102
Data type: Uint16
Parameter 1-64 Resonance Damping only has effect when parameter 1-10 Motor Construction = [0] Asynchron.
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 Resonance
Damping.
1-65 Resonance Damping Time Constant
Default value: 5 ms
Setup: All setups
Data type: Uint8
Parameter 1-65 Resonance Damping Time Constant only has effect when parameter 1-10 Motor Construction = [0] Asynchron.
Set parameter 1-64 Resonance Damping and parameter 1-65 Resonance Damping Time Constant to help eliminate high-frequency
resonance problems. Enter the time constant that provides the best dampening.
1-66 Min. Current at Low Speed
Default value: Size related
Setup: All setups
Data type:
Uint32
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.
1-67 Load Type
Default setting: [0] Passive load
Setup: All setups
Data type: Uint8
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Parameter Descriptions
True
Range, 1 - 50 ms
-3
True
Range, 1 - 200%
0
True
Option
–
True
AU430028034214en-001901 / 130R0310 | 105