BONFIGLIOLI Active Cube User Manual

03/12 EM-ABS-01 for ACU 89
8.1.5 Tolerance Band and Hysteresis
T
he analo
g
input characteristic with chan
g
e of si
g
n of the reference value can be
adapted by the parameter
Tolerance band 560 of the application. The tolerance band
to be defined extends the zero crossin
g
of the speed relative to the analo
g
control
signal. The parameter value (percent) is relative to the maximum current or volta
g
e
signal.
Parameters Settings
No. Description Min. Max. Factory set-
ting
560 Tolerance band 0,00% 25,00% 2,00%
(X1
/
Y1)
-10V
(-20mA)
+10V
(+20mA)
(
X
2
/
Y2)
pos. max. value
neg. max. value
Without tolerance band
(
X
1
/
Y1)
-10V
(-20mA)
+10V
(X2
/
Y2)
pos. max. value
Tolerance band
neg. max. value
With tolerance band
The default
Minimum Frequency 418 or Minimum Percentage 518 extends the pa-
rameterized tolerance band to the hysteresis.
(X1
/
Y1)
(X2
/
Y2)
pos. max. value
pos. min. value
neg. min. value
neg. max. value
Tolerance band
With tolerance band and minimum value
For example, the output variable comin
g
from positive input si
g
nals is kept on the
positive minimum value until the input si
g
nal becomes lower than the value for the
tolerance band in the negative direction. Then, the output variable follows the se
t
characteristic.

BONFIGLIOLI Active Cube Specifications

General

Brand	BONFIGLIOLI
Model	Active Cube
Category	Inverter
Language	English