ABB RDNA-01 Manuale Utente Pagina 206

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206 ACS550-01/U1 User’s Manual
Embedded fieldbus
PID control setpoint source
Using the following settings to select the fieldbus as the setpoint source for PID
loops:
Communication fault
When using fieldbus control, specify the drive’s action if serial communication is lost.
Drive parameter Value Description
Modbus
protocol
reference
ABB DRV DCU PROFILE
4010 SET POINT SEL
(Set 1)
8 (COMM VALUE 1)
9 (COMM+AI1)
10 (
COMM
*
AI1)
Setpoint is input reference 2
(+/-/
*
AI1)
40003
4110 SET POINT SEL
(Set 2)
4210
SET POINT SEL
(Ext/Trim)
Drive parameter Value Description
3018
COMM FAULT FUNC 0 (NOT SEL)
1 (
FAULT)
2 (
CONST SP7)
3 (
LAST SPEED)
Set for appropriate drive response.
3019 COMM FAULT TIME Set time delay before acting on a communication loss.
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