Danfoss VLT Midi Drive FC 280 Programming Guide

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. A sine-2 ramp gives non-linear
acceleration.
[0] * Linear
[1] Sine
Ramp
[2] Sine 2
Ramp
S-ramp based on the values set in
parameter 3-41 Ramp 1 Ramp Up Time and
parameter 3-42 Ramp 1 Ramp Down Time.
3-51 Ramp 2 Ramp Up Time
Range: Function:
Size
related*
[0.05 -
3600 s]
Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n
s
. Select a ramp-up time such
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.
Par . 3 − 51 = 
t
acc
 s xn
s
 RPM
ref  RPM
3-52 Ramp 2 Ramp Down Time
Range: Function:
Size related* [0.05 - 3600 s]
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
[1] Sine
Ramp
[2] Sine 2
Ramp
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.
3-61 Ramp 3 Ramp up Time
Range: Function:
Size
related*
[0.05 -
3600 s]
Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n
s
. Select a ramp-up time such
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
3-61 Ramp 3 Ramp up Time
Range: Function:
time in parameter 3-62 Ramp 3 Ramp down
Time.
3-62 Ramp 3 Ramp down Time
Range: Function:
Size
related*
[0.05 -
3600 s]
Enter the ramp-down time, which is the
deceleration time from the rated motor
speed n
s
to 0 RPM. Select a ramp-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 3-61 Ramp 3
Ramp up Time.
Par . 3 − 62 = 
t
dec
 s xn
s
 RPM
ref  RPM
3-70 Ramp 4 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
[1] Sine
Ramp
[2] Sine 2
Ramp
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.
3-71 Ramp 4 Ramp up Time
Range: Function:
Size
related*
[0.05 -
3600 s]
Enter the ramp-up time, which is the
acceleration time from 0 RPM to the rated
motor speed n
s
. Select a ramp-up time such
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 3-72 Ramp 4 Ramp Down
Time.
Par . 3 − 71 = 
t
acc
 s xn
s
 RPM
ref  RPM
3-72 Ramp 4 Ramp Down Time
Range: Function:
Size
related*
[0.05 -
3600 s]
Enter the ramp-down time, which is the
deceleration time from the rated motor
speed n
s
to 0 RPM. Select a ramp-down time
such that no overvoltage arises in the
inverter due to regenerative operation of the
Parameter Descriptions Programming Guide
MG07C102 Danfoss A/S © 12/2015 All rights reserved. 45
4 4

Danfoss VLT Midi Drive FC 280 Specifications

General

Brand	Danfoss
Model	VLT Midi Drive FC 280
Category	DC Drives
Language	English