
142
Operating Instructions ACU
09/08
13.7
Frequency ramps
The ramps determine how quickly the frequency value is changed if the reference
value changes or after a start, stop or brake command. The maximum admissible
ramp gradient can be selected according to the application and the current con-
sumption of the motor.
If the settings of the frequency ramps are identical for both directions of rotation, the
parameterization via the parameters
Acceleration (clockwise)
420 and
Deceleration
(clockwise)
421 is sufficient. The values of the frequency ramps are taken over for
Acceleration anticlockwise
422 and
Deceleration anticlockwise
423 if these have
been parameterized to the factory setting of -0.01 Hz/s.
The parameter value of 0.00 Hz/s for the acceleration blocks the corresponding di-
rection of rotation.
Parameter
Settings
No. Description
Min.
Max.
Fact. sett.
420
Acceleration (clockwise)
0.00 Hz/s
9999.99 Hz/s
5.00 Hz/s
421 Deceleration (clockwise)
0.01 Hz/s
9999.99 Hz/s
5.00 Hz/s
422 Acceleration anticlockwise
- 0.01 Hz/s 9999.99 Hz/s - 0.01 Hz/s
423 Deceleration anticlockwise
- 0.01 Hz/s 9999.99 Hz/s - 0.01 Hz/s
The ramps for the
Emergency stop clockwise
424 and
Emergency stop anticlockwise
425 of the drive mechanism to be activated via
Operation mode
630 for the stop-
ping behavior must be selected according to the application. The non-linear (S-
shaped) course of the ramps is not active in the case of an emergency stop of the
drive.
Parameter
Settings
No. Description
Min.
Max.
Fact. sett.
424 Emergency stop clockwise
0.01 Hz/s
9999.99 Hz/s
5.00 Hz/s
425
Emergency stop anti-clockwise
0.01 Hz/s
9999.99 Hz/s
5.00 Hz/s
Rotary field
clockwise
Rotary field
anticlockwise
+f
m ax
-f
ma x
t
Acceleration
(Clockwise)
420
Deceleration (Clockwise)
Emergency Stop
or
421
424
Clockwise
Acceleration
anticlockwise
(
)
422
Deceleration anticlockwise
Emergency Stop anticlockwise
or
423
425
Operating Instructions ACU
09/08
142
Summary of Contents for Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series
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