ABB ACS550-01 User Manual

ACS550 User’s Manual 129
Start-Up
Group 42: External / Trimming PID
This group defines the parameters used for the second PID controller (PID2), which
is used for the External / Trimming PID.
The operation of parameters 4201
…4221 is analogous with Process PID set 1
(PID1) parameters 4001…4021.
Code Description
4201
…
4221
See 4001 …4021
4228 ACTIVATE
Defines the source for enabling the external PID function.
• Requires 4230
TRIM MODE = 0 NOT SEL.
0 =
NOT SEL – Disables external PID control.
1 =
DI1 – Defines digital input DI1 as the control for enabling external PID control.
• Activating the digital input enables external PID control.
• De-activating the digital input disables external PID control.
2…6 =
DI2…DI6 – Defines digital input DI2…DI6 as the control for enabling external PID control.
•See
DI1 above.
7 =
DRIVE RUN – Defines the start command as the control for enabling external PID control.
• Activating the start command (drive is running) enables external PID control.
8 =
ON – Defines the power-on as the control for enabling external PID control.
• Activating power to the drive enables external PID control.
9…12 = TIMER FUNCTION 1…4 – Defines the Timer function as the control for enabling external PID control (Timer
function active enables external PID control).
• See parameter Group 36: Timer Functions.
-1 =
DI1(INV) – Defines an inverted digital input DI1 as the control for enabling external PID control.
• Activating the digital input disables external PID control.
• De-activating the digital input enables external PID control.
-2…-6 =
DI2(INV)…DI6(INV) – Defines an inverted digital input DI2…DI6 as the control for enabling external PID control.
•See
DI1(INV) above.
4229 OFFSET
Defines the offset for the PID output.
• When PID is activated, output starts from this value.
• When PID is deactivated, output resets to this value.
• Parameter is active when 4230
TRIM MODE = 0 (trim mode is not active).
4230 TRIM MODE
Selects the type of trim, if any. Using the trim it is possible to combine a corrective factor to the drive reference.
0 =
NOT SEL – Disables the trim function.
1 =
PROPORTIONAL – Adds a trim factor that is proportional to the rpm/Hz reference.
2 =
DIRECT – Adds a trim factor based on the control loop’s maximum limit.
4231 TRIM SCALE
Defines the multiplier (as a percent, plus or minus) used in the trim mode.

ABB ACS550-01 Specifications

General

Brand	ABB
Model	ACS550-01
Category	Controller
Language	English