ABB RMBA-01 User Manual Download Page 1

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ABB Drives

Modbus Adapter Module

RMBA-01

User’s Manual

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]

Summary of Contents for RMBA-01

Page 1: ...ABB Drives Modbus Adapter Module RMBA 01 User s Manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 2: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 3: ...Modbus Adapter Module RMBA 01 User s Manual 3AFE 64498851 REV A EN EFFECTIVE 1 3 2002 2002 ABB Oy All Rights Reserved Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 4: ...Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 5: ...e properly earthed Do not attempt any work on a powered drive After switching off the mains always allow the intermediate circuit capacitors 5 minutes to discharge before working on the frequency converter the motor or the motor cable It is good practice to check with a voltage indicating instrument that the drive is in fact discharged before beginning work The motor cable terminals of the drive a...

Page 6: ...Safety instructions iv RMBA 01 User s manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 7: ...ommunication module 1 3 RMBA 01 Modbus 1 3 Adapter module 1 3 Broadcast write 1 3 4XXXX register area 1 3 Chapter 2 Overview Overview 2 1 Introduction to Modbus 2 1 The RMBA 01 Modbus Adapter module 2 1 Delivery check 2 2 Compatibility 2 3 Warranty and liability information 2 3 Chapter 3 Installation Mounting 3 1 Wiring 3 2 Terminal designations 3 2 Wiring Diagrams 3 3 Bus termination 3 4 Phone 80...

Page 8: ...1 Chapter 5 Communication Register read and write 5 1 Register mapping 5 1 Exception codes 5 3 Data update 5 3 Chapter 6 Fault tracing Installation problems 6 1 Drive setup 6 1 PLC programming 6 1 Diagnostic LEDs 6 2 Appendix A Technical data RMBA 01 A 1 Fieldbus link A 2 Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 9: ...iring practices and how to operate the drive Before you start It is assumed that the drive is installed and ready to operate before starting the installation of the extension module In addition to conventional installation tools have the drive manuals available during the installation as they contain important information not included in this manual The drive manuals are referred to at various poi...

Page 10: ...information Chapter 3 Installation contains instructions for module hardware settings mounting and cabling Chapter 4 Programming explains how to program the master station and the drive before the communication through the adapter module can be started Chapter 5 Communication contains a description of how data is transmitted through the RMBA 01 module Chapter 6 Fault tracing explains fault tracing...

Page 11: ... 01 is a device through which an ACS 800 drive is connected to a Modbus serial communication bus Broadcast write Modbus network allows the Modbus master to perform a write to every slave station at the same time This write is called Broadcast This service does not give verification back to the master that the value has been received by each one of the slaves properly 4XXXX register area Modicon PL...

Page 12: ...Chapter 1 Introduction 1 4 RMBA 01 User s manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 13: ...y correspond to the PLC architecture The RMBA 01 supports the RTU protocol only The RMBA 01 Modbus Adapter module The RMBA 01 Modbus Adapter module is an optional device for ABB drives which enables the connection of the drive to a Modbus system The drive is considered as a slave on the Modbus network Through the RMBA 01 Modbus Adapter module it is possible to Give control commands to the drive St...

Page 14: ...nd the RMBA 01 Adapter module layout Delivery check The option package for the RMBA 01 Modbus Adapter module contains RMBA 01 module Two screws M3 8 mm This manual 4 3 2 1 CHASSIS RMBA 01MODBUS ADAPTER A B GND SHLD X1 WD INIT TXD RXD BUS S1 TERM GND ABB Drive ABB Drive Master station Slave stations Module status LEDs Fixing screw GND Terminal block for bus cable connection X1 Bus termination switc...

Page 15: ...on above rated capacities Nor shall the manufacturer ever be liable for consequential and incidental damages The period of manufacturer s warranty is 12 months and not more than 18 months from the date of delivery Extended warranty may be available with certified start up Contact your local distributor for details Your local ABB Drives company or distributor may have a different warranty period wh...

Page 16: ...Chapter 2 Overview 2 4 RMBA 01 User s manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 17: ... signal and power connection to the drive is automatically made through a 38 pin connector The module can alternatively be mounted on a DIN rail mountable AIMA 01 I O Module Adapter not available at the time of publication Mounting procedure 1 Insert the module carefully into SLOT 1 on the RMIO board until the retaining clips lock the module into position 2 Fasten the two screws included to the st...

Page 18: ...e earthed via an RC circuit Terminal designations Figure 3 1 RMBA 01 terminal designations X1 Marking Description 1 A Data negative Conductor 1 in twisted pair 2 B Data positive Conductor 2 in twisted pair 3 DG Data ground Conductor 3 in a three wire system Used in a three wire system as a common reference potential for all devices on the bus Three wire connection is highly recommended as it impro...

Page 19: ... Termination ON A 1 B 2 DG 3 SHLD 4 X1 RMBA 01 Station N Termination ON RMBA 01 Station 1 Termination OFF A 1 B 2 DG 3 SHLD 4 X1 GND A B Modbus Master Termination ON A 1 B 2 DG 3 SHLD 4 X1 RMBA 01 Station N Termination ON RMBA 01 Station 1 Termination OFF A 1 B 2 DG 3 SHLD 4 X1 GND A B Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 20: ...m the bus cable ends Figure 3 4 Bus termination switch S1 Note The built in termination circuitry of the RMBA 01 is of the active type so the module has to be powered for the termination to work If the module needs to be switched off during operation of the network the bus can be terminated by connecting a 220 ohm 1 4 W resistor between the A and B lines ON ON Bus termination OFF Bus termination O...

Page 21: ... see the drive manuals The detailed procedure of activating the module for the control of the drive is described in the drive documentation Control locations ABB drives can receive control information from multiple sources including digital inputs analogue inputs the drive control panel and a communication module e g RMBA 01 ABB drives allow the user to separately determine the source for each typ...

Page 22: ...Chapter 4 Programming 4 2 RMBA 01 User s manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 23: ...ed for correct value and for valid register addresses Some parameters never allow writing e g actual values some parameters allow writing only when the drive is stopped e g setup variables and some can be modified at any time e g actual reference values Register mapping The drive parameters are mapped to the 4xxxx area such that 40001 40096 are reserved for data sets 40101 49999 are reserved for p...

Page 24: ...ter numbers supported 4GGPP GG PP Data sets Each data set consists of 3 data words For example Data word 2 3 refers to 3rd word in data set 2 40001 40096 00 Data sets 01 Data word 1 1 02 Data word 1 2 03 Data word 1 3 04 Data word 2 1 05 Data word 2 2 06 Data word 2 3 07 Data word 3 1 94 Data word 32 1 95 Data word 32 2 96 Data word 32 3 Parameters 40101 40199 01 Group 01 01 Parameter 01 02 Parame...

Page 25: ... DATA ADDRESS Address does not exist or is read write protected 03 ILLEGAL DATA VALUE Value is outside min max limits Parameter is read only Code Name Meaning 03 Read holding registers Reads the binary contents of holding registers 4X references in the slave 06 Preset single register Presets a value into a single holding register 4X reference When broadcast the function presets the same register r...

Page 26: ...Chapter 5 Communication 5 4 RMBA 01 User s manual Phone 800 894 0412 Fax 888 723 4773 Web www clrwtr com Email info clrwtr com ...

Page 27: ...ws Drive setup Drive parameters can be read but control commands Start Stop or Reference do not work Activate the fieldbus module according to the instructions in the drive manual Check that the drive has the Modbus Adapter selected as the source of these commands see the Firmware Manual of the drive PLC programming PLC program is beyond ABB support Contact the manufacturer for assistance Phone 80...

Page 28: ...s a Modbus message over the bus The yellow LED lights at power up and remains lit until the drive has configured the module If the LED lights again after a successful configuration of the module the module has gone to reset state due to e g power loss In case the LED does not go out after one second The configuration has failed Switch off and restart the power supply of the drive The module has a ...

Page 29: ... the drive in its Hardware Manual are in effect Connectors 38 pin parallel bus connector One 4 pole terminal block for connection of the fieldbus cable detachable max 1 5 mm2 Hardware settings One DIP switch for bus termination selection Settings Via drive interface control panel 95 mm 34 mm 20 mm 62 mm 4 3 2 1 CHASSIS RMBA 01 MODBUS ADAPTER A B GND SHLD X1 WD INIT TXD RXD BUS S1 TERM GND Phone 80...

Page 30: ...dbus communication as a master Size of the link 247 stations including repeaters 31 stations and 1 repeater per segment Medium Shielded twisted pair RS485 cable Termination built in active type Modbus cable Belden 9841 2 wire Belden 9842 4 wire or equivalent Maximum Bus Length 1200 m Topology Multi drop Serial communication type Asynchronous half Duplex Transfer rate 600 1200 2400 4800 9600 19200 ...

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