ABB ACS320 - Page 227

Actual signals and parameters 227
A schematic of setpoint/feedback signal flow using parameter group 40 is presented
below.
Note: To activate and use the PID controller, parameter 1106 REF2 SELECT must be
set to value 19.
PID controller – advanced
ACS320 has 2 separate PID controllers:
• Process PID (PID1)
• External PID (PID2).
Process PID (PID1) has 2 separate sets of parameters:
• Process PID (PID1) SET1, defined in Group 40: Process PID set 1
• Process PID (PID1) SET2, defined in Group 41: Process PID set 2.
You can select between the 2 different sets by using parameter 4027 PID 1 PARAM
SET.
Panel REF1
REF1
REF2
0…17
Panel REF 2
EXT 1
EXT 2
Panel REF 1
DI
AI
Comm REF 1
0…17
G12
Const
Speed
PANEL
Hand/Auto
Selection
HAND
AUTO
G40
PID1
Panel REF2
AI
Current
Tor que
Power
AI
Current
Tor que
Power
PID Setpoint
PID Act Value
500%
-500%
G40
PID1
AI
Current
Torque
Power
AI
Current
Torque
Power
PID Act Value
Panel REF 2
DI
AI
Comm REF 2
G12
Const
Speed
Panel REF2
Internal
Comm
AI2
AI1
PID Setpoint
PID1 Out
19
19
4016
4017
4014
4015
4014
4015
4016
4017
4013
4012
4010
1101
1102
1103
1104
1105
1106
1106
1106
1107
1108