Par . 3 − 52 =
t
dec
s
×
n
s
RPM
ref RPM
Parameter 3-55 Ramp 2 S-ramp Ratio at Accel. Start
Table 193: Parameter 3-55 Ramp 2 S-ramp Ratio at Accel. Start
3-55 Ramp 2 S-ramp Ratio at Accel. Start
Default value: 50%
Parameter type: Range, 1 - 99%
Setup: All setups
Conversion index: 0
Data type: Uint8
Change during operation: True
Enter the proportion of the total ramp-up time (
parameter 3-51 Ramp 2 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.
Parameter 3-56 Ramp 2 S-ramp Taio at Accel. End
Table 194: Parameter 3-56 Ramp 2 S-ramp Ratio at Accel. End
3-56 Ramp 2 S-ramp Ratio at Accel. End
Default value: 50%
Parameter type: Range, 1 - 99%
Setup: All setups
Conversion index: 0
Data type: Uint8
Change during operation: True
Enter the proportion of the total ramp-up time (
parameter 3-51 Ramp 2 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.
Parameter 3-57 Ramp 2 S-ramp Ratio Decel. Start
Table 195: Parameter 3-57 Ramp 2 S-ramp Ratio at Decel. Start
3-57 Ramp 2 S-ramp Ratio at Decel. Start
Default value: 50%
Parameter type: Range, 1 - 99%
Setup: All setups
Conversion index: 0
Data type: Uint8
Change during operation: True
Enter the proportion of the total ramp-down time (
parameter 3-52 Ramp 1 Ramp Down Time
) where the deceleration torque increa-
ses. The larger the percentage value, the greater the jerk compensation achieved, and thus the lower the torque jerks in the applica-
tion.
Parameter 3-58 Ramp 2 S-ramp Ratio at Decel. End
Table 196: Parameter 3-58 Ramp 2 S-ramp Ratio at Decel. End
3-58 Ramp 2 S-ramp Ratio at Decel. End
Default value: 50%
Parameter type: Range, 1 - 99%
Setup: All setups
Conversion index: 0
Data type: Uint8
Change during operation: True
Enter the proportion of the total ramp-down time (
parameter 3-52 Ramp 2 Ramp Down Time
) where the deceleration torque decrea-
ses. The larger the percentage value, the greater the jerk compensation achieved, and thus the lower the torque jerks in the applica-
tion.
4.4.5 3-6* Ramp 3
Parameter 3-60 Ramp 3 Type
Table 197: Parameter 3-60 Ramp 3 Type
3-60 Ramp 3 Type
Default value: [1] Linear
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: True
AU373327181955en-000101 / 130R1208 | 115
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
