BONFIGLIOLI active cube 201

162
Operating Instructions ACU
12/16
Example:
Calculation of the acceleration time in clockwise rotation with an acceleration from 20
Hz to 50 Hz (fmax) and an acceleration ramp of 2 Hz/s for parameter Acceleration
(Clockwise) 420. The Ramp Rise Time Clockwise 430 is set to 100 ms.
r
aufr
a
Δf
t 
s 15
Hz/s 2
Hz 20Hz 50
t
aufr



s 15,1ms 100s 15t
ttt
auf
Vraufrauf


t
aufr
∆f
a
r
t
Vr
t
auf
=
=
=
=
=
acceleration time
clockwise rotary field
change of frequency
acceleration ramp
Acceleration
Clockwise
Ramp Rise Time󳮁 Clockwise
Acceleration time +
Ramp rise time
15.8 Percentage Value Ramps
The percentage value ramps scale the change of the reference value (in percent) for the
corresponding input function. The acceleration and deceleration of the drive are parameterized via
the frequency ramps.
The behavior Gradient Percentage Ramp 477 corresponds to a function which takes the time
behavior of the drive system into account. If the parameter is set to 0 %/s, this function is
deactivated and a direct reference value modification for the following function is obtained.
The default value depends on Configuration 30.
Parameter
Setting
No.
Description
Min.
Max.
Factory setting
477
Gradient Percentage Ramp
0 %/s
60000 %/s
x %/s
Rotary field
clockwise
Rotary field
anticlockwise
+f
max
-f
ma x
Ramp Rise Time Clockwise 430
Ramp Fall Time Clockwise 431
Ramp Rise Time Anticlockwise 432
Ramp Rise Time Anticlockwise 433
t
t
aufr
t
auf
Frequency reference value = 0.00 Hz