Danfoss VLT AutomationDrive FC 301 Programming Manual page 166

Programming Guide | VLT® AutomationDrive FC 301/FC 302
Setup: All setups
Data type: Uint32
Enter the ramp-up time, that is the acceleration time from 0 RPM to the synchronous motor speed n
prevents the output current from exceeding the current limit in parameter 4-18 Current Limit during ramping. The value 0.00
corresponds to 0.01 s in speed mode. See ramp-down time in parameter 3-42 Ramp 1 Ramp Down Time.
3-42 Ramp 1 Ramp Down Time
Default value:
Size related
Setup: All setups
Data type:
Uint32
Enter the ramp-down time, that is the deceleration time from the synchronous motor speed n
that no overvoltage occurs in the inverter due to regenerative operation of the motor, and such that the generated current does not
exceed the current limit set in parameter 4-18 Current Limit. The value 0.00 corresponds to 0.01 s in speed mode. See ramp-up time in
parameter 3-41 Ramp 1 Ramp Up Time.
3-45 Ramp 1 S-ramp Ratio at Accel. Start
Default value: 50%
Setup:
All setups
Data type: Uint8
Enter the proportion of the total ramp-up time (parameter 3-41 Ramp 1 Ramp Up Time) in which the acceleration torque increases.
The larger the percentage value, the greater the jerk compensation achieved, and thus the lower the torque jerks occurring in the
application.
3-46 Ramp 1 S-ramp Ratio at Accel. End
Default value:
50%
Setup: All setups
Data type: Uint8
Enter the proportion of the total ramp-up time (parameter 3-41 Ramp 1 Ramp Up Time) in which the acceleration torque decreases. The
larger the percentage value, the greater the jerk compensation achieved, and thus the lower the torque jerks in the application.
3-47 Ramp 1 S-ramp Ratio at Decel. Start
Default value: 50%
Setup:
All setups
Data type: Uint8
Enter the proportion of the total ramp-down time (parameter 3-42 Ramp 1 Ramp Down Time) where the deceleration torque increases.
The larger the percentage value, the greater the jerk compensation achieved, and thus the lower the torque jerks in the application.
166 | © 2024.09
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
to 0 RPM. Select a ramp-down time such
s
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Parameter type:
Conversion index:
Change during operation:
Parameter Descriptions
-2
True
. Select a ramp-up time which
S
Range, 0.01 - 3600 s
-2
True
Range, 1 - 99%
0
True
Range, 1 - 99%
0
True
Range, 1 - 99%
0
True
AU275636650261en-003201 / 130R0334