Start Adjustments - Danfoss VLT AutomationDrive FC 301 Programming Manual

Programming Guide | VLT® AutomationDrive FC 301/FC 302
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.

1-7* Start Adjustments

6.3.8
1-70 Start Mode
Default value: [0] Rotor detection
Setup: All setups
Data type: Uint8
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.
Option Name
[0]* Rotor detection
[1] Parking
[2] Rotor det. w/parking
[4] Rotor Detection II
1-71 Start Delay
Default value: 0 s
Setup: All setups
Data type: Uint8
This parameter refers to the start function selected in parameter 1-72 Start Function. Enter the time delay required before commencing
acceleration.
1-72 Start Function
Default value:
[2] Coast/delay time
Setup: All setups
Data type:
Uint8
Select the start function during start delay. This parameter is linked to parameter 1-71 Start Delay.
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Parameter type:
Conversion index:
Change during operation:
Description
Estimates the electrical angle of the rotor and uses this as a
starting point. Standard selection for automation applications.
The parking function applies DC current across the stator
winding and rotates the rotor to electrical 0 position (typically
selected for HVAC applications). Parking current and time are
configured in parameter 2-06 Parking Current and parameter
2-07 Parking Time.
Combining rotor detection with the parking function.
Estimates the electrical angle of the rotor by sending out test
pulses. If the motor is restarted in less than 1.0 s, this function
does a second measurement. If movement is detected, the start
will be delayed for maximum 10 s.
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
AU275636650261en-003201 / 130R0334 |
Parameter Descriptions
Option
–
True
Range, 0 - 25.5 s
-1
True
Option
–
True
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