SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual, Page: 111 / 260

09/08
Operating Instructions ACU
109
Attention! In configurations 210, 211 and 230, digital input S4IND is by default set
for the evaluation 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.
9.4.2 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
f
max
=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 division marks
S
min
of the incremental encoder for a required minimum speed n
min
can be calculated
from this requirement.
min
n A
60
min
f
min
S
⋅
=
for example:
1500
10 2
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
Operating Instructions ACU 109 09/08