Scaling - BONFIGLIOLI Vectron ACTIVE Manual

The operation mode "101 – bipolar abs. value" maps the bipolar analog signal onto a
unipolar input characteristic. The formation of the absolute value takes the character-
istic 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.
5.1.5
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 according to the
configuration selected via the frequency limits or the percentage value limits. In the
parameterization of a bipolar characteristic, the minimum and maximum limit for both
directions of rotation are taken over. The percentage values of the characteristic
points are relative to the maximum limits selected.
The controls use the maximum value of the output frequency, which is calculated from
the parameter
mechanism. The frequency limits define the speed range of the drive mechanism and
the reference percentage values supplement the scaling of the input characteristic
according to the configured functions.
06/05
06/05
Operation mode "101 – bipolar abs. value"
Y
(X2=80% / Y2=85%)
42.50Hz
25.00Hz
-7V
-25.00Hz
(X1=-70% / Y1=-50%)

Scaling

Parameter
No. Description
418 Minimum Frequency
419 Maximum Frequency
maximum frequency
Parameter
No. Description
518 Minimum reference percentage
519 Maximum reference percentage
Characteristic point 1:
X1 = -70.00% · 10 V = -7.00 V
Y1 = -50.00% · 50.00 Hz = -25.00 Hz
Characteristic 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
signal 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
Min.
0.00 %
0.00 %
Setting
Max. Fact. sett.
999.99 Hz 3.50 Hz
999.99 Hz 50.00 Hz
Setting
Max. Fact. sett.
300.00 % 0.00 %
300.00 % 100.00 %
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