Danfoss VLT Midi Drive FC 280 Programming Manual page 48

Parameter Descriptions
3-50 Ramp 2 Type
Option:
[0] Linear
*
4 4
[1] Sine
Ramp
[2] Sine 2
Ramp
3-51 Ramp 2 Ramp Up Time
Range:
Size [0.01 -
related 3600 s]
*
3-52 Ramp 2 Ramp Down Time
Range:
Size [0.01 -
related 3600 s]
*
3-60 Ramp 3 Type
Option:
[0] Linear
*
[1] Sine
Ramp
46
VLT
Function:
Select the ramp type, depending on
requirements for acceleration/deceleration. A
linear ramp gives constant acceleration during
ramping. A sine-2 ramp gives non-linear
acceleration.
S-ramp based on the values set in
parameter 3-51 Ramp 2 Ramp Up Time and
parameter 3-52 Ramp 2 Ramp Down Time.
Function:
Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n . Select a ramp-up time such
s
that 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 3-52 Ramp 2 Ramp Down
Time.
t s x n RPM
acc s
Par . 3 − 51 =
ref RPM
Function:
Enter the ramp-down time, that is the
deceleration time from the rated motor
speed n to 0 RPM. Select a ramp-down time
s
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 parameter 4-18 Current
Limit. The value 0.00 corresponds to 0.01 s in
speed mode. See ramp-up time in
parameter 3-51 Ramp 2 Ramp Up Time.
t s x n RPM
dec s
Par . 3 − 52 =
ref RPM
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.
Danfoss A/S © 07/2016 All rights reserved.
®
Midi Drive FC 280
3-60 Ramp 3 Type
Option:
[2] Sine 2
Ramp
3-61 Ramp 3 Ramp up Time
Range:
Size
related 3600 s]
*
3-62 Ramp 3 Ramp down Time
Range:
Size
related 3600 s]
*
3-70 Ramp 4 Type
Option:
[0] Linear
*
[1] Sine
Ramp
[2] Sine 2
Ramp
3-71 Ramp 4 Ramp up Time
Range:
Size
related 3600 s]
*
Function:
S-ramp based on the values set in
parameter 3-61 Ramp 3 Ramp up Time and
parameter 3-62 Ramp 3 Ramp down Time.
Function:
[0.01 - Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n . Select a ramp-up time such
s
that 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 3-62 Ramp 3 Ramp down
Time.
Function:
[0.01 - Enter the ramp-down time, which is the
deceleration time from the rated motor
speed n to 0 RPM. Select a ramp-down time
s
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 3-61 Ramp 3
Ramp up Time.
t s x n RPM
dec s
Par . 3 − 62 =
ref RPM
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.
S-ramp based on the values set in
parameter 3-71 Ramp 4 Ramp up Time and
parameter 3-72 Ramp 4 Ramp Down Time.
Function:
[0.01 - Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n . Select a ramp-up time such
s
that the output current does not exceed the
current limit in parameter 4-18 Current Limit
MG07C302