Limitation Of Field Controller - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

Parameter
behavior with the function "R->0, Stop" is selected. This stopping behavior is select-
ed if parameter
(2, 12, 22, 32, 42, 52, 62, 72 – „ ... , R->0, Stop"). The stopping behavior is de-
scribed in chapter 12.2 "Stopping Behavior".
In these operation modes the setting of
tive after the time of parameter
flux is calculated by multiplying
After a start command the drive starts immediately and the flux is increased up to
the reference value during the movement.
Because of the reduced flux the initially required torque-forming current component
Isq is increased. The time needed to achieve the reference flux can be influenced by
parameter
setup.
No.
778 Reduction Factor Flux

17.5.6.1 Limitation of field controller

The output signal of the field controller, the integrating and proportional components
are limited via parameter
744. The guided commissioning has set the parameter
it
according to the parameter
No.
743 Ref. Isd upper limit
744 Ref. Isd lower limit
The limits of the field controller define not only the maximum current occurring, but
also the dynamic properties of the controller. The upper and lower limits restrict the
modification speed of the machine flux and the torque resulting from it. In particular
the speed area above the nominal frequency should be observed for the modification
of the flux-forming component. The upper limit is to be estimated from the product
of the set magnetizing current and the correction factor
the limit must not exceed the overload current of the drive.
238
Reduction Factor Flux
630 is set to 2x (20 ... 27 – „R->0, Stop, ... ") or x2
Operation Mode
Holding Time
Reference Flux
743 which is set to the motor rated current after
Ref. Isd Upper Limit
Parameter
Description
Ref. Isd upper limit
Rated current
Parameter
Description
Operating Instructions ACU
778 reduces the standstill current if a stopping
Reduction Factor Flux
638 is elapsed. The resulting standstill
717 and
Reduction Factor Flux
Settings
Min.
20.00% 100.00%
743 and parameter
371.
Settings
Min.
0 ü ⋅ I
- I
FUN
Reference flux
778 becomes effec-
778.
Max. Fact. sett.
100.00%
Ref. Isd lower lim-
743
Ref. Isd upper limit
Max. Fact. sett.
I
FUN FUN
I 0.0
FUN
717, although
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