3-41 Ramp 1 Ramp Up Time
Range:
Function:
Size
related
*
[0.05 -
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 such that the output current does
not exceed 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
*
[0.05 -
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
Par . 3 − 42 =
t
dec
s x n
s
RPM
ref RPM
4.4.4 3-5* Ramp 2
This parameter group configures ramp 2 parameters.
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
[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
during ramping. The value 0.00 corresponds
to 0.01 s in speed mode. See ramp-down
3-51 Ramp 2 Ramp Up Time
Range:
Function:
time in
parameter 3-52 Ramp 2 Ramp Down
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]
4.4.5 3-6* Ramp 3
This parameter group configures ramp 3 parameters.
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]
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
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
Parameter Descriptions
Programming Guide
MG06C602
Danfoss A/S © 7/2015 All rights reserved.
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