ABB Tech Note 190 ACS320 to ACH180 Modbus RTU 应用说明文档(英语).pdf

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TechnicalNote190

ACS320toACH180ModbusRTU

Integrationtoanexistingcontroller

ThefollowingtechnicalnotewillassistwiththeprogrammingoftheACH180drivebeinginstalledwithanexisting

ModbusRTUcontrollerconfiguredtosupportcommunicationandcontrolwithanACS320drive.Readtheentire

technicalnotebeforeimplementinganyoftheapproachesoutlinedwithinthisdocument.Thistechnicalnoteis

intendedforanaudiencethathasexperienceworkingwithVFDsandmotorsinHVACRapplicationsaswellas

knowledgeofadaptiveprogramminginanACH180drive.Thedocumentisintendedasasupplementtotheexisting

ACH180firmwaremanual.Alltraditionalsafetyrequirements,includingphysicalandelectricalinstallationrequirements,

areoutsidethescopeofthisdocument.

Topicstobecovered:

1.ThethreeoptionsforACH180integrationwithanexistingModbusControllerpreviouslyconfiguredfora

ACS320.

a.Modbusbackwardcompatibilitymode

b.Modbuscontrollerlogicchanges

c.CustomModbusregisterconfiguration

2.Consideringthedifferences

a.RegistersintheACS320vstheACH180

3.CustomModbusregisterconfigurationtools

a.ScalingparametersintheACH180drive

b.AdaptiveprogrammingintheACH180

i.Introduction

ii.Dataoutputparameters

1.Example1–Outputfrequency

2.Example2–AIscaling

3.Example3–DIbitmapping

4.Summary

TheACS320isobsolete,andtheACH180driveisnowsupportingsimilarMicrodriveapplications.TheACH180has

expandedcapabilitiesandsharesmanyoftheall-compatiblefeaturesoftheACH580drive.Whenthereisaneedto

replaceanexistingACS320Microdrivethati