
SINUS PENTA
PROGRAMMING
INSTRUCTIONS
86/452
12.
RAMPS
MENU
1 2.1.
Overview
An acceleration/deceleration ramp is a function allowing linear variations of the motor speed.
The ramp time is the time the motor takes to reach its max. speed when it starts from zero speed (or the time the
motor takes to reach 0 speed when decelerating).
Four pairs of programmable values are available. Each pair defines the motor acceleration time and deceleration time.
The unit of measure of the basic time period is assigned to each pair of values.
In the Ramps menu, you can set the acceleration and deceleration times for the four speed ramps available for
ordinary operation, for the torque ramp and the speed/torque ramp in JOG mode.
Using two special parameters, you can also set the start rounding off and the end rounding off for the acceleration
ramps, while two different parameters allow setting the start rounding off and the end rounding off for the deceleration
ramps. A fifth parameter allows selecting the ramps for the preset rounding off.
12.1.1.
D
E S CRIP TION O F THE
S
P E E D
R
A MP S
For the four speed ramps that can be selected through a combination of the digital inputs set in
C167
and
C168
, you
can set the following: acceleration time, deceleration time and their units of measure, allowing increasing the
programmable time range.
P009
Ramp Up Time 1
P010
Ramp Down Time 1
P012
Ramp Up Time 2
P013
Ramp Down Time 2
P014
Unit of Measure for Ramp Times 1 and 2
P015
Ramp Up Time 3
P016
Ramp Down Time 3
P018
Ramp Up Time 4
P019
Ramp Down Time 4
P020
Unit of Measure for Ramp Times 3 and 4
The set ramp time corresponds to the time the speed reference takes to reach the max. speed (from 0 rpm) as an
absolute value between min. speed and max. speed of the selected motor (
C028
and
C029
for motor 1, and so on).
The time unit of measure may have the following values:
0
0.01 s
1
0.1 s
2
1 s
3
10 s
The programmable range may be 0s – 327000s.
Example of a speed ramp:
Table 18: Example of a Speed Ramp.
P014
Range P009 – P010
Value
Coding
Min.
Max.
0
0.01 s
0
327.00 s
1
0.1 s
0
3270.0 s
2
1s
0
32700 s
3
10 s
0
327000 s