ABB ACS560 Firmware Manual page 57

source is AI scaled, then
should be configured to AI1 scaled.
The 40.05 Process PID trim output act
Par40.01

------------------------ -
Par40.05 =

100
The below graph shows the PID trim output in proportional mode throughout the
speed range. Here, the trimmed output is directly proportional to the value of
parameter 40.53 Set 1 trimmed ref
0
Note: In the above graph, it is assumed that the PID output is limited/stable at 100.
This is for understanding purpose only. In real case scenario, PID output can vary
based on the setpoint and actual.
Example
If,
Par. 40.52 Set 1 trim selection
Par. 40.56 Set 1 trim source
Par. 40.53 Set 1 trimmed ref pointer
Par. 22.11 Ext1 speed ref1
Par. 12.20 AI1 scaled at AI1 max
Par. 12.12 AI1 scaled value
Par. 40.01 Process PID output actual
Par. 40.55 Set 1 trim adjust
Then,
100

--------- -
P ar40.05 =

100
Par40.05 = 375
22.11 Ext1 speed ref1


Par40.53

pointer.
40.53 Set 1 trimmed ref pointer
= Speed
= PID output
=
= AI1 scaled
= 1500
= 750 (AI1 actual scaled value)
= 0.5

 
750 0.5

and 40.53 Set 1 trimmed ref pointer
is calculated using below formula:

Par40.55
40.55 Set 1 trim adjust
AI1 scaled
= 100
Program features 57