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ABBAC500 Technical Help Sheet
How to setup an AC500 PLC to communicate to a
ACS350 drive via Modbus.
Revision Date: Feb 16,2009
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Objective
Using AC500 to communicate to ACS350 Drive with Modbus
This intermediate level course demonstrates how to connect an AC500 PLC to a ACS350. The student will connect ACS350 to a AC500 PLC with provided communication diagrams. The student will also control and monitor ACS350 with provided AC500 program (AC500_ACS350_RTU(ModBus).pro).
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Required Items
AC500 PLC PM5xx
Open Program AC500_ACS350_RTU(ModBus).pro
ABB Drive ACCS350
ACS350 Technical manual
FMBA-01 Modbus communication module
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Overview
Hardware Connections
Drive Setup Procedure
PLC program
Evaluation
Summary
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Hardware Connections
AC500 to Drive Connections
FMBA-01 ModuleDrive Jumper Settings
AC500 COM1
OR
AC500 COM2
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Drive Setup Procedure
ACS350 Drive Settings for Motor and Modbus communicationUse motor nameplate data for motor parameters.
Use keypad to enter motor and communication parameter settings.
View next page for step by step procedure.
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Drive Setup Procedure
Step1: Go to drive menu and select ASSISTANTSSelect “Enter”
Step2: Select Start-up Assistant Select “SEL” to go into assistant
When Prompted if you want to use start-up assistant select “Yes”and click “Ok”.
Step3: Follow Parameter Tree to enter correct settings on the following pages.
Notice number scheme for example: Parameter 9908 breaks down to Group 99 Parameter 08. Each parameter can be changed using the up and down arrows, click “Save” to store it to memory. Exit can be selected at any time to go back one menu.
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Drive Setup Procedure
START-UP ASSISTANT
9901- set to “ENGLISH” click “Save” to go to next parameter
9906-set to “0.7A” click “Save” to go to next parameter
9907- set to “60Hz” click “Save” to go to next parameter
9908- set to “1660RPM” click “Save” to go to next parameter
9905- set to “220V” click “Save” to go to next parameter
9909- set to “0.2HP” click “Save” to go to next parameter
Click on “Save” to continue after each parameter.
To Go Back one step click on “Exit”and start over.
Do you want to continue with Application setup? Select “Continue” and click “Ok”
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Drive Setup Procedure
START-UP ASSISTANT
9902- set to “ABB STANDARD” click “Save” to go to next parameter
3001- set to “NOT SEL” click “Save” to go to next parameter
1104- set to “0.0Hz” click “Save” to go to next parameter
1105- set to “60.0Hz” click “Save” to go to next parameter
1103- set to “COMM” click “Save” to go to next parameter
2007- set to “0.0Hz” click “Save” to go to next parameter
2203- 5.0S click “Save” to go to next parameter
2202- 5.0S click “Save” to go to next parameter
2008- set to “60.0Hz” click “Save” to go to next parameter
Selected Macro uses scalar control? Select “Ok” click “Ok” to continue
Do you want to continue with EXT1 reference setup? Select “Continue” and click “Ok”
Continue…..
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Drive Setup Procedure
START-UP ASSISTANT
1201-set to “NOT SEL” click “Save” to go to next parameter
1106- set to “KEYPAD” click “Save” to go to next parameter
3001- set to “NOT SEL” click “Save” to go to next parameter
1107- set to “0.0%” click “Save” to go to next parameter
1202- set to “6.0Hz” click “Save” to go to next parameter
1108- set to “100.0%” click “Save” to go to next parameter
2101- set to “AUTO” click “Save” to go to next parameter
1003- set to “REQUEST” click “Save” to go to next parameter
1001- set to “COMM” click “Save” to go to next parameter
Do you want to continue wit EXT 2 reference setup? Select “Continue” click “Ok”
Do you want to continue with start and stop setup? Select “Continue” click “Ok”
Continue…..Continue…..
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Drive Setup Procedure
START-UP ASSISTANT
2102- set to COAST click “Save” to go to next parameter
Click “Exit” again to go back to Main Menu
1601- set to “NOT SEL” click “Save” to
Do you want to continue? Click “Exit” to go back one menu
Continue…..
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Drive Setup Procedure
Step4: Go to drive menu and select Parameters and enter parameters for Field Bus Control, refer to tree below.
PARAMETERS
Select Group 10-START/STOP/DIR
Select Group 53-EFB PROTOCOL
Select Group 98-OPTIONS
Select Group 99-START-UP DATA
Select Group 11-REFERENCE SELECT
5302-EFB STATION ID click “Edit”Set to “47” OR MATCH PLC click “Save”
5303-BAUD RATE click “Edit”Set to “9.6 KB/S” click “Save”
5304-EFB PARITY click “Edit:Set to “8 EVEN 1” click “Save”
5305-EFB CTRL PROFILE click “edit”Set to “ABB DRV FULL” click “Save”
9902-APPLIC MACRO click “Edit”Set to “ABB STANDARD” click “Save”
1001-EXT1 COMMANDS click “Edit” set to “COMM”and click “Save”
1102- EXT1/EXT2 SEL click “Edit” set to “EXT 1”and click “Save”
1103-REF1 SELECT click “Edit” set to “COMM” and click “Save”
9802- COMM PROT SEL click “edit” set to “STD MODBUS” click “Save”
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Drive Setup Procedure
Step 5: Before you continue you must be able to control the drive using the keypad.
Using Keypad place drive under local control
Select start button on keypad
Toggle up button until motor ramps up
If motor responds to commands then stop drive and place it in remote control. You are now ready to control it via modbus
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PLC Program
Open CoDeSys Software Open Program AC500_ACS350_RTU(ModBus).pro
Select Correct Target Settings
Compile ProgramCheck for errors. everything ok? Great.
Go Online
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PLC Program
AC500_ACS350_RTU(ModBus).pro
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PLC program
Step 6: Controlling the Drive from the PLC Place Drive back in remote
Place PLC in Run Mode
RXD and TXD Green Led’s should be flashing green on Drive FMBA-01 Module.
Step 7: Using program HMI interfaceNotice HMI similar to Keypad
To initialize and start Drive Click on stop and start indicators.
Drive should begin to ramp up
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PLC program
Step 8: Continue with HMI Freq control can be done two different ways
Click on Output Freq Hz indicator and it will highlight green
Next click on freq percent numerical indicator and a numpad will pop up, enter 50%. Drive will ramp up to 30Hz.
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PLC program
Step 9: Continue with HMI For a finer Freq control
Return Output Freq Hz indicator to its original state
Click on UP or DOWN indicators to adjust frequency by 0.1Hz
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Evaluation
Was hardware connection content defined?
Was drive setup procedure easy to follow?
Did the PLC program communicate with the ACS350?
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Summary
The Course provided a quick-start guide to interfacing an AC500 PLC to ACS350 Drive
Modbus communication protocol was used to communicate between the AC500 and ACS350
The Modbus protocol linked PLC memory addresses to ACS350 commands and parameters.
The PLC program provided a user interface to execute commands and retrieve ACS350 parameters.
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