N O T I C E
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
Parameter type: Range, 0 - 1000%
Setup: All setups
Conversion index: 0
Data type: Uint16
Change during operation: True
N O T I C E
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
Parameter type: Range, 1 - 50 ms
Setup: All setups
Conversion index: -3
Data type: Uint8
Change during operation: True
N O T I C E
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
Parameter type: Range, 1 - 200%
Setup: All setups
Conversion index: 0
Data type: Uint32
Change during operation: True
N O T I C E
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.
AU275636650261en-000101 / 130R0334
94 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
Summary of Contents for VLT AutomationDrive FC 301
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