Scaling - BONFIGLIOLI Active Cube User Manual

The operation mode "101 – bipolar Amount" maps the bipolar analog signal onto a
unipolar input characteristic. The formation of the absolute amount takes the charac-
teristic into account comparable to the "bipolar" operation mode, but the characteristic
points are reflected on the X axis with a negative value for the Y axis.
(X1=-70% / Y1=-50%)

8.1.4 Scaling

The analog input signal is mapped to the freely configurable characteristic. The maxi-
mum admissible setting range of the drive mechanism is to be set via the frequency
limits or percentage limits according to the configuration selected. In parameterization
of a bipolar characteristic, the minimum and maximum limits for both directions of
rotation are taken on. The percentage values of the points relate to the maximum
limits selected.
No.
418
419
The control system uses the maximum value of the output frequency, which is calcu-
lated from the
chanism. The frequency limits define the speed range of the drive, and the percentage
values supplement the scaling of the analog input characteristic in accordance with
the functions configured.
No.
518
519
88
Operation mode "101 – bipolar Amount"
Y
(X2=80% / Y2=85%)
42.50Hz
25.00Hz
-7V
-25.00Hz
Parameters
Description
Minimum frequency
Maximum frequency
Maximum Frequency
Parameters
Description
Minimum percentage
Maximum percentage
EM-ABS-01 for ACU
Point 1:
X1 = -70.00% · 10 V = -7.00 V
Y1 = -50.00% · 50.00 Hz = -25.00 Hz
Point 2:
X2 = 80.00% · 10 V = 8.00 V
Y2 = 85.00% · 50.00 Hz = 42.50 Hz
X
Tolerance band:
8V
ΔX = 2.00% · 10 V = 0.20 V
In this example, the reference value is
again increased from an analog input sig-
nal of -1.44 V with a tolerance band of
±0.20 V. The theoretical change of sign of
the reference value is taken into account
and leads to the tolerance band stated.
There is no change of the direction of
rotation.
Min.
0.00 Hz
0.00 Hz
419 and the compensated slip of the drive me-
Min.
0,00%
0,00%
Settings
Max. Factory set-
ting
999.99 Hz 3.50 Hz
999.99 Hz 50.00 Hz
Settings
Max. Factory set-
ting
300,00% 0,00%
300,00% 100,00%
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