ABB ACS560, Firmware Manual

Page: 59 / 514

Program features 59
Par. 12.12 AI1 scaled value = 750 (AI1 actual scaled value)
Par. 40.01 Process PID output actual = 100 (limited to 100)
Par. 40.54 Set 1 trim mix = 0.1
Par. 40.55 Set 1 trim adjust = 0.5
Then,
If 40.53 Set 1 trimmed ref pointer is 0.
If 40.53 Set 1 trimmed ref pointer is 750.
If 40.53 Set 1 trimmed ref pointer is 1500.
PID trim auto connection
PID trim auto connection ( 40.65 Trim auto connection ) enables the connection of PID
trim output actual ( 40.05 Process PID trim output act ) to the respective speed, torque
or frequency reference chains. You can use parameter 40.52 Set 1 trim selection (for
PID set 1) or 41.52 Set 2 trim selection (for PID set 2) and select the respective trim
(speed, torque or frequency).
The motor control mode ( 99.04 Motor control mode ) also impacts the PID trim output
actual ( 40.05 Process PID trim output act ) added to the speed, torque or frequency
reference chains. In scalar control mode, the speed trim and torque trim values are
zero and in vector control mode, the frequency trim value is zero.
See the control chain diagram on page 503 .
Note: If the parameter 40.65 Trim auto connection is disabled and the drive stops
through Ramp stop (Off1) or Emergency ramp stop (Off3) emergency stop mode
(
21.04 Emergency stop mode ), the PID trim output actual ( 40.05 Process PID trim
output act ) is not added to the frequency reference chain during the drive
deceleration condition
Speed trim connection
Speed trim is added to 23.02 Speed ref ramp output . The parameter 24.01 Used
speed reference displays the final speed reference after the addition of speed trim.
Par40.05 1500 0.1
  
1 0.1 –
 
0
  
+
 
1

=
Par40.05 150 =
Par40.05 1500 0.1
  
1 0.1 –
 
750
  
+
 
1

=
Par40.05 825 =
Par40.05 1500 0.1
  
1 0.1 –
 
1500
  
+
 
1

=
Par40.05 1500 =