Percentage Value Ramps; Block Frequencies - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

14.8

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
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 the
No. Description
477 Gradient percentage ramp
14.9

Block Frequencies

In certain applications, it is necessary to fade out reference frequencies. In this way,
resonance points of the system as stationary operating points are avoided. The pa-
rameters
Frequency hysteresis
A block frequency is active if the parameter values of the block frequency and the
frequency hysteresis are not equal to 0.00 Hz.
The area faded out as a stationary working point by the hysteresis is passed through
as quickly as possible according to the ramp set. If the output frequency is limited as
a result of the selected control parameter settings, e.g. if the current limit is reached,
the hysteresis is passed through with a delay. The behavior of the reference value
can be determined from its direction of movement according to the following dia-
gram.
No. Description
447 1. blocking frequency
448 2. blocking frequency
449 Frequency hysteresis
reference value output
166
Gradient percentage ramp
Parameter
447 and
1st block frequency
449 define two resonance points.
Parameter
Operating Instructions ACU
477 corresponds to a function which takes
30.
Configuration
Settings
Min.
0 %/s 60000 %/s
2nd block frequency
Settings
Min.
0.00 Hz 999.99 Hz
0.00 Hz 999.99 Hz
0.00 Hz 100.00 Hz
hysteresis hysteresis
f
block
f -hysteresis f +hysteresis
block block
Max. Fact. sett.
x %/s
448 with the parameter
Max. Fact. sett.
0.00 Hz
0.00 Hz
0.00 Hz
internal
reference value
06/13