Danfoss VLT AutomationDrive FC 300 Programming Manual page 80

FC 300 Programming Guide
3-51 Ramp 2 Ramp up Time
Range:
Application [Application dependant]
dependent*
3-52 Ramp 2 Ramp down Time
Range:
Application [Application dependant]
dependent*
3-55 Ramp 2 S-ramp Ratio at Accel. Start
Range:
50 %* [Application dependant]
3-56 Ramp 2 S-ramp Ratio at Accel. End
Range:
50 %* [Application dependant]
3-57 Ramp 2 S-ramp Ratio at Decel. Start
Range:
50 %* [Application dependant]
3-58 Ramp 2 S-ramp Ratio at Decel. End
Range:
50 %* [Application dependant]
3.5.6 3-6* Ramp 3
Configure ramp parameters, see 3-4*.
3-60 Ramp 3 Type
Option:
[0] * Linear
Function:
Enter the ramp-up time, i.e. the acceleration time from 0 RPM to the rated motor speed n
a ramp-up time such that the output current does not exceed the current limit in par. 4-18
Limit during ramping. The value 0.00 corresponds to 0.01 sec. in speed mode. See ramp-down time
Ramp 2 Ramp down Time
in par. 3-52
t acc s x n s RPM
Par
. 3 − 51 =
ref RPM
Function:
Enter the ramp-down time, i.e. the deceleration time from the rated motor speed n
Choose a ramp-down time such that no over-voltage arises in the inverter due to regenerative
operation of the motor, and such that the generated current does not exceed the current limit set
Current Limit
in par. 4-18 . The value 0.00 corresponds to 0.01 s in speed mode. See ramp-up time
Ramp 2 Ramp up Time
in par. 3-51
t dec s x n s RPM
Par . 3 − 52 =
ref RPM
Function:
Enter the proportion of the total ramp-up time (par. 3-51
acceleration torque increases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Enter the proportion of the total ramp-up time (par. 3-51
acceleration torque decreases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Enter the proportion of the total ramp-down time (par. 3-52
deceleration torque increases The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Enter the proportion of the total ramp-down time (par. 3-52
deceleration torque decreases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Select the ramp type, depending on requirements for acceleration and deceleration. A linear ramp
will give constant acceleration during ramping. An S-ramp will give non-linear acceleration, com-
pensating for jerk in the application.
®
MG.33.M8.02 - VLT is a registered Danfoss trademark
3 Parameter descriptions
.
.
Ramp 2 Ramp up Time
Ramp 2 Ramp up Time
Ramp 2 Ramp down Time
Ramp 2 Ramp down Time
. Choose
s
Current
3
to 0 RPM.
s
) in which the
) in which the
) where the
) where the
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