Danfoss VLT AutomationDrive EZ FC 321 Programming Manual page 59

VLT® AutomationDrive EZ FC 321
Programming Guide
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] Costant 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
shaft
T[Nm]
T
nom
Illustration 27: Relationship with Constant Power
Parameter 1-04 Overload Mode
Table 64: 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.
Use this parameter to configure the drive for either high or normal overload. When selecting the drive size, always review the tech-
nical data in the Operating Guide or the Design Guide to know the available output current.
Option Name
[0] High torque
[1] Normal torque
Danfoss A/S © 2021.08
W = ω rad/s × T Nm
mech
P[W]
P
nom
ω
2ω
nom
Parameter type: Option
Data type: Uint8
N O T I C E
Description
Allows up to 160% overtorque.
For oversized motor. Allows up to 110% overtorque.
P
T
ω [rad/S]
nom
Setup: All setups
Change during operation: False
Parameter Descriptions
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