BONFIGLIOLI ACTIVE Cube ACU 401-33

In configurations 210, 211 and 230, digital input S4IND is by default set for the evalu-
ation of a speed sensor signal (track B).
If an operation mode without sign is selected (
Operation Mode 11 or
Operation
Mode
12
), this input is not set for the evaluation of a speed sensor signal and can be
used for other functions.
10.4.2 Division marks, speed sensor 1
The number of increments of the connected speed sensor can be adjusted via pa-
rameter Division marks, speed sensor 1 491. Select
the division marks of the speed
sensor according to the speed range of the application.
The maximum number of division marks S
max
is defined by the frequency limit of
fmax=150 kHz of the digital inputs S5IND (track A) and S4IND (track B).
max
n
60
max
f
max
S ⋅=
for example:
6000
1500
60s
Hz
150000
max
S
=
⋅=
f
max
n
max
= 150000 Hz
= max. speed of the motor in RPM
To guarantee true running of the drive, an encoder signal must be evaluated at least
every 2 ms (signal frequency f = 500 Hz). The minimum number of divi
sion marks
S
min
of the incremental encoder for a required minimum speed n
min
can be calculated
from this requirement.
min
nA
60
min
f
min
S
⋅
=
for example:
1500
102
s 60
Hz 500
min
S =
⋅
⋅=
n
min
A
= min. speed of the motor in RPM
= evaluation (1, 2, 4)
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
491 Division marks, speed sensor 1 1 8192 1024
130 Operating Instructions ACU 06/13