3-41 Ramp 1 Ramp Up Time
Range:
Function:
Size
related
*
[ 0.01 - 3600
s]
Enter the ramp-up time, that is the
acceleration time from 0 RPM to
the synchronous motor speed n
S
.
Select a ramp-up time which
prevents the output current from
exceeding the current limit in
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
Par . 3 − 41 =
t
acc
s x n
s
RPM
ref RPM
3-42 Ramp 1 Ramp Down Time
Range:
Function:
Size
related
*
[ 0.01 - 3600
s]
Enter the ramp-down time, that is
the deceleration time from the
synchronous motor speed n
s
to 0
RPM. Select a ramp-down time such
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
. 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
Par . 3 − 42 =
t
dec
s x n
s
RPM
ref RPM
3-45 Ramp 1 S-ramp Ratio at Accel. Start
Range:
Function:
50 %
*
[ 1 - 99 %]
Enter the proportion of the total
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
Range:
Function:
50 %
*
[ 1 - 99 %]
Enter the proportion of the total
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
Range:
Function:
50 %
*
[ 1 - 99 %]
Enter the proportion of the total
ramp-down time
(
parameter 3-42 Ramp 1 Ramp Down
) 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.
3-48 Ramp 1 S-ramp Ratio at Decel. End
Range:
Function:
50 %
*
[ 1 - 99 %]
Enter the proportion of the total
ramp-down time
(
parameter 3-42 Ramp 1 Ramp Down
) where the deceleration
torque decreases. The larger the
percentage value, the greater the
jerk compensation achieved, and
thus the lower the torque jerks in
the application.
Parameter Descriptions
Programming Guide
MG06J202
Danfoss A/S © 03/2019 All rights reserved.
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Summary of Contents for VLT AutomationDrive FC 361
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