ACS550 User's Manual
PID Control Setpoint Source
Using the following settings to select the fieldbus as the setpoint source for PID
loops:
Drive Parameter
4010
4110
4210
Communication Fault
When using fieldbus control, specify the drive's action if serial communication is lost.
Drive Parameter
3018
3019
Value
8 (
SET POINT SEL
COMM VALUE
(Set 1)
9 (
+
COMM
10 (
*
SET POINT SEL
COMM
(Set 2)
SET POINT SEL
(Ext/Trim)
0 (
COMM FAULT FUNC
NOT SEL
1 (
FAULT
2 (
CONST SP
3 (
LAST SPEED
Set time delay before acting on a communication loss.
COMM FAULT TIME
Description
1)
Setpoint is input reference 2
(+/-/* AI1)
1)
AI
1)
AI
Value
)
Set for appropriate drive response.
)
7)
)
Modbus Protocol
Reference
ABB DRV
DCU PROFILE
40003
Description
Embedded Fieldbus
155