Danfoss VLT AutomationDrive FC 301

Parameter 1-03 Torque Characteristics
Table 61: Parameter 1-03 Torque Characteristics
1-03 Torque Characteristics
Default value: [0] Constant torque
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
N O T I C E
This parameter cannot be adjusted while the motor is running.
Select the torque characteristic required. VT and AEO are both energy-saving operations.
Op-
tion
Name
Description
[0]*
Constant
torque
Motor shaft output provides constant torque under variable speed control.
[1]
Variable
torque
Motor shaft output provides variable torque under variable speed control. Set the variable torque level in
parameter 14-40 VT Level.
[2]
Auto en-
ergy op-
tim.
Automatically optimizes energy consumption by minimizing magnetization and frequency via parameter
14-41 AEO Minimum Magnetisation and parameter 14-42 Minimum AEO Frequency.
[5]
Constant
power
The function provides a constant power in the field weakening area. The torque shape of motor mode is
used as a limit in the generator mode. This is done to limit the power in generator mode that otherwise
becomes considerably larger than in motor mode, due to the high DC-link voltage available in generator
mode.
Pshaft W = ωmech rad/s × T Nm
ω
nom
2ω
nom
ω [rad/S]
P[W]
e30bb655.11
T[Nm]
P
T
P
nom
T
nom
Illustration 29: Relationship with Constant Power
Parameter 1-04 Overload Mode
Table 62: Parameter 1-04 Overload Mode
1-04 Overload Mode
Default value: Size related
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: False
N O T I C E
This parameter cannot be adjusted while the motor is running.
AU275636650261en-000101 / 130R033466 | Danfoss A/S © 2022.12
Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide