ABB ACS880-17 - Page 395

Parameters 395
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. -
90.53 Load gear
numerator
Parameters 90.53 and 90.54 define a gear function between
the load (ie. driven equipment) speed and the encoder
feedback selected by parameter 90.51 Load feedback
selection. The gear can be used to correct a difference
between the load and encoder speeds for example if the
encoder is not mounted directly on the rotated machinery.
See also section Load and motor feedback (page 50).
Note: This parameter cannot be changed while the drive is
running.
1
-2147483648 …
2147483647
Load gear numerator. -
90.54 Load gear
denominator
See parameter 90.53 Load gear numerator.
Note: This parameter cannot be changed while the drive is
running.
1
-2147483648 …
2147483647
Load gear denominator. -
90.55 Load feedback fault Selects how the drive reacts to loss of load feedback. Fault
Fault Drive trips on a 73A1 Load position feedback fault. 0
Warning Drive generates an A798 Encoder option comm loss or A7B1
Load speed feedback warning and continues operation using
estimated feedbacks.
1
90.56 Load position offset Defines a load-side position offset. The resolution is
determined by parameter 90.57 Load position resolution.
0 rev
-2147483648 …
2147483647 rev
Load-side position offset. -
90.57 Load position
resolution
Defines how many bits are used for load position count within
one revolution. For example, with the setting of 16, the
position value is multiplied by 65536 for display in parameter
90.04 Load position.
16
0…31 Load position resolution. -
90.58 Pos counter init
value int
Defines an initial position (or distance) for the position counter
(as an integer value) when parameter 90.59 Pos counter init
value int source is set to Pos counter init value int.
See also section
Position counter (page 51).
0
-2147483648 …
2147483647
Initial integer value for position counter. -
90.59 Pos counter init
value int source
Selects the source of the initial position integer value. When
the source selected by 90.67 Pos counter init cmd source
activates, the value selected in this parameter is assumed to
be the position of the load.
Pos counter
init value int
Zero 0. 0
Pos counter init
value int
Parameter 90.58 Pos counter init value int.1
Other Source selection (see Terms and abbreviations on page 114). -
No. Name/Value Description Def/FbEq16
90.53 Load gear numerator
90.54 Load gear denominator
Load speed
Encoder speed
=