ABB ACS880 ESP, Firmware Manual

Page: 323 / 494

Parameters 323
Yes The motor model uses the calculated speed estimate
(regardless of the setting of
90.41 Motor feedback
selection , which in this case only selects the source of
feedback for the speed controller).
1
90.48 Motor position axis
mode Selects the axis type for motor position measurement. Rollover
Linear Linear. 0
Rollover The value is between 0 and 1 revolutions, and rolls over at
360 degrees. 1
90.49 Motor position
resolution Defines how many bits are used for motor position count
within one revolution. For example, with the setting of 24,
the position value is multiplied by 16777216 for display in
parameter
90.06 Motor position scaled (or for fieldbus).
24
0…31 Motor position resolution. -
90.51 Load feedback
selection Selects the source of load speed and position feedbacks
used in control. None
None No load feedback selected. 0
Encoder 1 Load feedbacks are updated based on the speed and
position values read from encoder 1.
The values are scaled by the load gear function (
90.53
Load gear numerator and 90.54 Load gear denominator ).
The encoder is set up by the parameters in group 92
Encoder 1 configuration .
1
Encoder 2 Load feedbacks are updated based on the speed and
position values read from encoder 2.
The values are scaled by the load gear function (
90.53
Load gear numerator and 90.54 Load gear denominator ).
The encoder is set up by the parameters in group 93
Encoder 2 configuration .
2
Estimate Calculated speed and position estimates are used. The
values are scaled from the motor side to the load side
using the inverted ratio between
90.61 Gear numerator
and 90.62 Gear denominator (ie. 90.62 divided by 90.61 ).
3
Motor feedback The source selected by parameter 90.41 Motor feedback
selection for motor feedback is also used for load
feedback.
Any difference between the motor and load speeds (and
positions) can be compensated by using the inverted ratio
between
90.61 Gear numerator and 90.62 Gear
denominator ( 90.62 divided by 90.61 ).
4
90.52 Load speed filter time Defines a filter time for load speed feedback ( 90.03 Load
speed ).
4 ms
0…10000 ms Load speed filter time. -
No. Name/Value Description Def/
FbEq16