BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual page 145

The minimum number of revolutions needed until the required position is reached
depends on the
eration anticlockwise
Example: f = 20 Hz, a = 5 Hz/s, p = 2 ⇒ rpm = 20
With an actual frequency of 20 Hz and a delay of 5 Hz/s, at least 20 rotations are
needed until standstill at the required position. This is the minimum value for the
Positioning distance
ber of rotations until the required position is reached is to be lower, the frequency
must be reduced, the deceleration increased, or the reference point must be shifted.
The digital signal for registration of the reference point and the logical assignment
are to be chosen from a selection of S
S2IND, S3IND and S6IND to further functions is to be checked according to selected
Configuration
to the function "Start of clockwise operation").
The signals for positioning and a stopping behavior should not be assigned to the
same digital input.
Signal source
2 - S2IND, neg. edge
3 - S3IND, neg. edge
6 - S6IND, neg. edge
1x - SxIND, pos. edge
2x - SxIND, pos./neg. edge
The registration of the reference position via a digital signal can be influenced by a
variable dead time while the control command is read and processed. The signal
running time is compensated by a positive figure for the
setting of a negative signal correction decelerates the processing of the digital signal.
No.
461 Signal correction
The influences on the positioning which depend on the operating point can be cor-
rected empirically via the
not reached, the deceleration duration is increased by a positive load correction val-
ue. The distance between the reference point and the required position is extended.
Negative values accelerate the braking process and reduce the positioning distance.
The limit of the negative signal correction results from the application and the
tioning distance
No.
462 Load correction
Operating Instructions ACU
06/13
241 and
Actual frequency
423) as well as the
2 f
=
U
⋅ ⋅
min
2 a p
460; a shorter positioning distance is not possible. If the num-
30 (e.g., in configurations 110 and 210, digital input S2IND is linked
459
Parameter
Description
Load correction
460.
Parameter
Description
(
Deceleration clockwise
373 of the motor.
No. of pole pairs
U = min. number of rotations
min
f =
Actual frequency
a =
Deceleration
p =
No. of pole pairs
459. The link of the digital inputs
ignal source
Function
The positioning starts with the change of the
logic signal from 1 (HIGH) to 0 (LOW) at the
reference point.
The positioning starts with the change of the
logic signal from 0 (LOW) to 1 (HIGH)
The positioning begins with the change of the
logic signal
Signal correction
Settings
Min. Max.
-327.68 ms +327.67 ms
462 parameter. If the required position is
Settings
Min. Max.
-32768 +32767
) 421 (or
Decel-
241
421 (423)
373 of motor
461. The
Fact. sett.
0.00 ms
Posi-
Fact. sett.
0
145