ABB ACS180 - Page 245

Parameters 245
AI1 scaled 12.12 AI1 scaled value 1
AI2 scaled 12.22 AI2 scaled value.2
Other Source selection (see Terms and abbreviations). -
40.51 Set 1 trim mode Activates the trim function and selects between direct and
proportional trimming (or a combination of both). With
trimming, it is possible to apply a corrective factor to the
drive reference (setpoint). The output after trimming is
available as parameter 40.05 Process PID trim output act.
See the control chain diagram on page 375.
Off
Off The trim function is inactive. 0
Direct The trim function is active. The trimming factor is relative
to the maximum speed, torque or frequency; the selection
between these is made by parameter 40.52 Set 1 trim
selection.
1
Proportional The trim function is active. The trimming factor is relative
to the reference selected by parameter 40.53 Set 1
trimmed ref pointer.
2
Combined The trim function is active. The trimming factor is a
combination of both Direct and Proportional modes; the
proportions of each are defined by parameter 40.53 Set 1
trim mix.
3
40.52 Set 1 trim selection Selects whether trimming is used for correcting the speed,
torque or frequency reference.
Speed
Torque Torque reference trimming. 1
Speed Speed reference trimming. 2
Frequency Frequency reference trimming. 3
40.53 Set 1 trimmed ref
pointer
Selects the signal source for the trim reference. Not selected
Not selected None. 0
AI1 scaled 12.12 AI1 scaled value (see page 132). 1
AI2 scaled 12.22 AI2 scaled value (see page 134). 2
Other Source selection (see Terms and abbreviations on page
102).
-
40.54 Set 1 trim mix When parameter 40.51 Set 1 trim mode is set to
Combined, defines the effect of direct and proportional
trim sources in the final trimming factor.
0.000 = 100% proportional
0.500 = 50% proportional, 50% direct
1.000 = 100% direct
0.000
0.000 … 1.000 Trim mix. 1 = 1
40.55 Set 1 trim adjust Defines a multiplier for the trimming factor. This value is
multiplied by the result of parameter 40.51 Set 1 trim
mode. Consequently, the result of the multiplication is
used to multiply the result of parameter 40.56 Set 1 trim
source.
1.000
-100.000 … 100.000 Multiplier for trimming factor. 1 = 1
40.56 Set 1 trim source Selects the reference to be trimmed. PID output
PID ref PID setpoint. 1
No. Name/Value Description Default
FbEq 16
ACS180 FW.book Page 245 Tuesday, March 9, 2021 2:25 PM