Danfoss VLT AutomationDrive FC 301 Programming Manual page 66

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 1-03 Torque Characteristics
Table 61: Parameter 1-03 Torque Characteristics
1-03 Torque Characteristics
Default value: [0] Constant torque
Conversion index: –
This parameter cannot be adjusted while the motor is running.
Select the torque characteristic required. VT and AEO are both energy-saving operations.
Op- Name Description
tion
[0]* Constant Motor shaft output provides constant torque under variable speed control.
torque
[1] Variable Motor shaft output provides variable torque under variable speed control. Set the variable torque level in
torque
parameter 14-40 VT Level.
[2] Auto en-
Automatically optimizes energy consumption by minimizing magnetization and frequency via parameter
ergy op-
14-41 AEO Minimum Magnetisation and parameter 14-42 Minimum AEO Frequency.
tim.
[5] Constant The function provides a constant power in the field weakening area. The torque shape of motor mode is
power 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.
P W = ω
shaft
T[Nm]
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
Conversion index: –
This parameter cannot be adjusted while the motor is running.
66 | Danfoss A/S © 2022.12
Parameter type: Option
Data type: Uint8
N O T I C E
rad/s × T Nm
mech
P[W]
P
nom
ω
2ω
nom
nom
Parameter type: Option
Data type: Uint8
N O T I C E
Setup: All setups
Change during operation: True
P
T
ω [rad/S]
Setup: All setups
Change during operation: False
AU275636650261en-000101 / 130R0334
Parameter Descriptions