Start Adjustments - Danfoss VLT AutomationDrive FC 301 Programming Manual

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 1-67 Load Type
Table 118: Parameter 1-67 Load Type
1-67 Load Type
Default value: [0] Passive load
Conversion index: –
Option Name Description
[0]* Passive load For conveyors, fans, and pump applications.
[1] Active load
For hoisting applications. This option allows the drive to ramp up at 0 RPM. When [1] Active Load is selec-
ted, set parameter 1-66 Min. Current at Low Speed to a level which corresponds to maximum torque.
Parameter 1-68 Motor Inertia
Table 119: Parameter 1-68 Motor Inertia
1-68 Motor Inertia
²
Default value: 0 kgm
Conversion index: -4
Enter the motor inertia to obtain an improved torque readout and therefore a better estimate of the mechanical torque on the
shaft. Available in flux control principle only.
Parameter 1-69 System Inertia
Table 120: Parameter 1-69 System Inertia
1-69 System Inertia
Default value: Size related
Conversion index: -4
This parameter cannot be adjusted while the motor is running.
The system inertia and parameter 7-08 Speed PID Feed Forward Factor are used to calculate acceleration feed forward for the speed
PID controller. Automatic measurement of system inertia and setting of this parameter are activated by setting the parameter to 0.
System inertia is calculated after the 1
function is only active when parameter 1-01 Motor Control Principle is set to [2] Flux Sensorless or [3] Flux w/motor feedb. Accelerate to
at least model shift frequency (parameter 1-53 Model Shift Frequency) + 10 Hz and decelerate to produce a result. Measurement is
possible in both speed, position, or synchronization mode.

5.2.8 1-7* Start Adjustments

Parameter 1-70 Start Mode
Table 121: Parameter 1-70 Start Mode
1-70 Start Mode
Default value: [0] Rotor detection
Conversion index: –
Select the start-up mode. This is done to initialize the VVC+ control core for previously free-running motor. Both selections estimate
the speed and angle. Active for PM and SynRM motors in VVC+ only.
Danfoss A/S © 2022.12
Parameter type: Option
Data type: Uint8
Parameter type: Range, 0.0000 - 10000.0000 kgm
Data type: Uint32
Parameter type: Range, 0000 - 10000.0000 kgm
Data type: Uint32
N O T I C E
st
running cycle with sufficient data and the parameter is automatically set after stop. The
Parameter type: Option
Data type: Uint8
Parameter Descriptions
Setup: All setups
Change during operation: True
2
Setup: All setups
Change during operation: False
2
Setup: All setups
Change during operation: False
Setup: All setups
Change during operation: True
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