258 ACS550-02/U2 User’s ManualFieldbus adapterPID Control setpoint sourceUsing the following settings to select the fieldbus as the setpoint source for PIDloops:Communication faultWhen using fieldbus control, specify the drive’s action if serial communication is lost.Feedback from the drive – FBAInputs to the controller (drive outputs) have pre-defined meanings established by theprotocol. This feedback does not require drive configuration. The following table listsa sample of feedback data. For a complete listing, see all parameters listed insection Complete parameter descriptions on page 128.ScalingTo scale the drive parameter values see the following sections, as appropriate:• Actual Value scaling on page 269 (ABB Drives profile technical data)• Actual Value scaling on page 271 (Generic profile technical data).Drive parameter Value Setting Protocolreference4010 SET POINT SEL (Set 1) 8 (COMM VALUE 1)9 (COMM + AI1)10 (COMM *AI1)Setpoint is input reference 2(+/-/* AI1)4110 SET POINT SEL (Set 2)4210 SET POINT SEL (Ext/Trim)Drive parameter Value Description3018 COMM FAULT FUNC 0 ( NOT SEL)1 ( FAULT)2 ( CONST SP7)3 ( LAST SPEED)Set for appropriate driveresponse.3019 COMM FAULT TIME Set time delay before acting on a communication loss.Drive parameter Protocol reference0102 SPEED0103 OUTPUT FREQ0104 CURRENT0105 TORQUE0106 POWER0107 DC BUS VOLTAGE0109 OUTPUT VOLTAGE0301 FB CMD WORD 1 – bit 0 (STOP)0301 FB CMD WORD 1 – bit 2 (REV)0118 DI 1-3 STATUS – bit 0 (DI3)Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
