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ACS550 User’s Manual 155

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.

ABB ACS550-01 User Manual

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