Danfoss VLT 5000 Series, Instruction Manual, Page: 105 / 240

206 Ramp type (RAMP TYPE)
Value:
Linear (LINEAR) [0]
Sinusoidal (S1) [1]
Sin
2
(S2) [2]
Sin
3
(S3) [3]
Sin
2
filter (S2 FILTER) [4]
Function:
There is a choice of 4 different ramp types.
Description of choice:
Select the desired ramp type, depending on require-
ments concerning acceleration/deceleration.
The ramp is recalculated if the reference is changed
during ramping, resulting in an increase of the ramping
time.
Selection S
2
filter [4] is not recalculated if the reference
is changed during ramping.
207 Ramp-up time 1
(RAMP UP TIME 1)
Value:
0.05 - 3600 sec.
depends on unit
Function:
The ramp-up time is the acceleration time from 0 Hz to
the rated motor frequency f
M,N
(parameter 104) or the
rated motor speed n
M,N
(if Speed control, closed loop
has been selected in parameter 100). This presuppo-
ses that the output current does not reach the torque
limit (to be set in parameter 221).
Description of choice:
Program the desired ramp-up time.
208 Ramp-down time 1
(RAMP DOWN TIME 1)
Value:
0.05 - 3600 sec.
depends on unit
Function:
The ramp-down time is the deceleration timefrom the
rated motor frequency f
M,N
(parameter 104) to 0 Hz or
from the rated motor speed n
M,N
, provided there is no
over-voltage in the inverter because of regenerative
operation of the motor, or if the generated current rea-
ches the torque limit (to be set in parameter 222).
Description of choice:
Program the desired ramp-down time.
209 Ramp-up time 2
(RAMP UP TIME 2)
Value:
0.05 - 3600 sec.
depends on unit
Function:
See description of parameter 207.
Description of choice:
Program the desired ramp-up time.
Switching from ramp 1 to ramp 2 is effected via a signal
on digital input terminal 16, 17, 29, 32 or 33.
VLT
®
5000 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
102 MG.51.C5.22 - VLT
p
is a registered Danfoss trademark.