Danfoss VLT AutomationDrive FC 360 Programming Manual page 45

Parameter Descriptions
3-41 Ramp 1 Ramp Up Time
Range: Function:
Size [0.05 Enter the ramp-up time, i.e. the acceleration
related - 3600 time from 0 RPM to the synchronous motor
*
s] speed n . Select a ramp-up time such that
S
the output current does not exceed 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.
Par . 3 − 41 =
3-42 Ramp 1 Ramp Down Time
Range: Function:
Size [0.05 - Enter the ramp-down time, that is, the
related 3600 s] deceleration time from the synchronous
*
motor speed n
down time such that no overvoltage arises
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.
Par . 3 − 42 =
4.4.4 3-5* Ramp 2
Selecting ramp parameters, see parameter group 3-4*
Ramp 1.
3-50 Ramp 2 Type
Option: Function:
Select the ramp type, depending on
requirements for acceleration/deceleration. A
linear ramp gives constant acceleration during
ramping. An S-ramp gives non-linear
acceleration.
[0] Linear
*
[2] S-ramp S-ramp based on the values set in
Const parameter 3-41 Ramp 1 Ramp Up Time and
Time parameter 3-42 Ramp 1 Ramp Down Time.
3-51 Ramp 2 Ramp Up Time
Range: Function:
Size [0.05 Enter the ramp-up time, i.e. the acceleration
related - 3600 time from 0 RPM to the rated motor speed
*
s] n . Select a ramp-up time such that the
s
output current does not exceed the current
limit in parameter 4-18 Current Limit during
ramping. The value 0.00 corresponds to 0.01
MG06C402
Programming Guide
tacc s x ns RPM
ref RPM
to 0 RPM. Select a ramp-
s
tdec s x ns RPM
ref RPM
Danfoss A/S © Rev. 2014-03-31 All rights reserved.
3-51 Ramp 2 Ramp Up Time
Range: Function:
s in speed mode. See ramp-down time in
3-52 Ramp 2 Ramp Down Time.
Par . 3 − 51 =
3-52 Ramp 2 Ramp Down Time
Range: Function:
Size [ 0.01 - Enter the ramp-down time, i.e. the
related 3600 s] deceleration time from the rated motor
*
speed n to 0 RPM. Select a ramp-down
s
time such that no overvoltage arises in the
frequency converter due to regenerative
operation of the motor, and such that the
generated current does not exceed the
current limit set in 4-18 Current Limit. The
value 0.00 corresponds to 0.01 s in speed
mode. See ramp-up time in 3-51 Ramp 2
Ramp Up Time.
Par . 3 − 52 =
3-60 Ramp 3 Type
Option: Function:
Select the ramp type, depending on
requirements for acceleration/deceleration. A
linear ramp gives constant acceleration during
ramping. An S-ramp gives non-linear
acceleration.
[0] Linear
*
[2] S-ramp S-ramp based on the values set in
Const parameter 3-61 Ramp 3 Ramp up Time and
Time parameter 3-62 Ramp 3 Ramp down Time
3-61 Ramp 3 Ramp up Time
Range: Function:
Size [ 0.01 - Enter the ramp-up time, i.e. the
related 3600 s] acceleration time from 0 RPM to the rated
*
motor speed n
such that the output current does not
exceed the current limit in 4-18 Current
Limit during ramping. The value 0.00
corresponds to 0.01 s in speed mode. See
ramp-down time in parameter 3-62 Ramp 3
Ramp down Time.
3-62 Ramp 3 Ramp down Time
Range: Function:
Size [ 0.01 - Enter the ramp-down time, i.e. the
related 3600 s] deceleration time from the rated motor
*
speed n
s
time such that no overvoltage arises in the
inverter due to regenerative operation of
the motor, and such that the generated
current does not exceed the current limit
tacc s x ns RPM
ref RPM
tdec s x ns RPM
ref RPM
. Select a ramp-up time
s
to 0 RPM. Select a ramp-down
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