ABB ACS550 User Manual page 159

ACS550 User's Manual
Group 40: PROCESS PID SET 1
This group defines a set of parameters used with the Process PID (PID1) controller.
Typically only parameters in this group are needed.
PID controller
In PID control mode, the drive compares a reference signal (setpoint) to an actual
signal (feedback) and automatically adjusts the speed of the drive to match the two
signals. The difference between the two signals is the error value.
Typically PID control mode is used, when the speed of a motor needs to be
controlled based on pressure, flow or temperature. In most cases
only 1 transducer signal wired to the ACS550
The following is a schematic of setpoint/feedback signal flow using parameter group
40.
Panel REF2
AI
Current
Torque
Power
AI
Current
Torque
Power
Note: In order to activate and use the PID controller, parameter 1106 must be set to
value 19.
Basic set-up
–
Panel REF2
AI
P4016
Current
Torque
Power
AI
P4017
P4014
Current
Torque
Power
Panel REF 1
DI
AI
Comm REF 1
Panel REF 2
P1106
DI
AI
Comm REF 2
PID Setpoint
P4010
AI1
P4012
AI2
P4013
Comm
Internal
P4016
P4015
P4014
P4017
PID Act Value
only parameter group 40 is needed.
–
Panel REF1
Panel REF 2
P1106
0...17,
500% PID Setpoint 20...21
-500%
19
G40
PID1
P4015
PID Act Value
P1103
G12
P1104
Const
P1105
Speed
G12
Const
Speed
P1106
0...17,
P1107
20...21
P1108
19
G40
PID1
PID1 Out
when there is
–
P1101
REF1
REF2
PANEL
LOC/REM
selection
LOC
REM
P1102
EXT 1
EXT 2
Parameters
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