ABB ACS880 Firmware Manual page 282

282 Parameters
No. Name/Value
Estimate
Motor feedback
90.52 Load speed filter
time
0 ... 10000 ms
90.53 Load gear
numerator
-2147483648 ...
2147483647
90.54 Load gear
denominator
-2147483648 ...
2147483647
90.56 Load position offset
-32768 ... 32767
rev
90.57 Load position
resolution
0...32
90.61 Gear numerator
-2147483648 ...
2147483647
90.62 Gear denominator
-2147483648 ...
2147483647
Description
A calculated speed estimate is used.
The source selected by parameter
selection for motor feedback is also used for load feedback.
Any difference between the motor and load speeds can be
compensated by using the load gear function; see parameter
90.53 Load gear numerator.
Defines a filter time for load speed feedback
speed).
Load speed filter time.
Parameters 90.53 and 90.54
the load (ie. driven equipment) speed feedback and motor
control. The gear is used to correct a difference between the
load and encoder speeds for example if the encoder is not
mounted directly on the rotated machinery.
90.53 Load gear numerator
90.54 Load gear denominator
Load gear numerator.
See parameter 90.53 Load gear
Load gear denominator.
Load-side position offset. The resolution is determined by
parameter 90.57 Load position
Load-side position offset.
Defines how many bits are used for load position count within
one revolution.
Load position resolution.
Parameters 90.61 and 90.62
the motor and load speeds.
90.61 Gear numerator
90.62 Gear denominator
Gear numerator (motor-side).
See parameter 90.61 Gear
Gear denominator (load-side).
90.41 Motor feedback
(90.03 Load
define a gear function between
Load speed
=
Encoder speed
numerator.
resolution.
define a gear function between
Motor speed
=
Load speed
numerator.
Def/FbEq16
3
4
4 ms
-
1
-
1
-
0 rev
-
16
-
1
-
1
-