ABB FMBA-01 User Manual
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ABB FMBA-01 User Manual

Modbus adapter module
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Modbus Adapter Module
FMBA-01

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Summary of Contents for ABB FMBA-01

  • Page 1 ABB Drives User’s Manual Modbus Adapter Module FMBA-01...
  • Page 2 Modbus Adapter Module FMBA-01 User’s Manual 3AFE68586704 REV A EN EFFECTIVE: 27.06.2005  2005 ABB Oy. All Rights Reserved.

  • Page 3: Safety Instructions

    Safety instructions Overview This chapter states the general safety instructions that must be followed when installing and operating the FMBA-01 Modbus Adapter module. The material in this chapter must be studied before attempting any work on, or with, the unit.

  • Page 4: Table Of Contents

    RS-485 standard ..........11 The FMBA-01 Modbus Adapter module ......12 Compatibility .

  • Page 5: Table Of Contents

    Technical data and diagnostics ....... . . 19 FMBA-01 Modbus Adapter module ....... . 19 RS-485 link .

  • Page 6: Introduction

    Safety instructions are featured on the first few pages of this manual. Overview contains a short description of the RS-485 standard and the FMBA-01 Modbus Adapter module and a delivery checklist. Mechanical installation contains placing and mounting instructions for the module.

  • Page 7: Terms Used In This Manual

    FMBA-01 Modbus Adapter module The FMBA-01 Modbus Adapter module is one of the optional fieldbus adapter modules available for ABB drives. The FMBA-01 is a device through which an ABB drive is connected to a RS-485 network. Introduction...

  • Page 8: Overview

    Overview Overview This chapter contains a short description of the RS-485 standard and the FMBA-01 Modbus Adapter module, and a delivery checklist. RS-485 standard RS-485 is a serial interface standard for communication over a twisted-pair cable. Because the RS-485 signal transmission is differential, it provides better protection against noise and longer transmission distances than the RS-232.

  • Page 9: The Fmba-01 Modbus Adapter Module

    The FMBA-01 Modbus Adapter module The FMBA-01 Modbus Adapter module is an optional device for ABB drives which enables the connection of the drive to a RS-485 network. The FMBA-01 provides galvanic isolation between the drive and RS-485 network and converts serial communication signals of the drive to RS-485 signal levels.

  • Page 10: Compatibility

    Compatibility The FMBA-01 Modbus Adapter module is compatible with all stations that comply with RS-485. Delivery check The option package for the FMBA-01 Modbus Adapter module contains: • Modbus Adapter module, type FMBA-01 • this manual. Overview...

  • Page 11: Mechanical Installation

    WARNING! Follow the safety instructions given in this manual and the drive documentation. Mounting The FMBA-01 Modbus Adapter module is to be inserted into its specific position in the drive. The module is held in place with plastic pins and one screw. The screw also provides the earthing of the fieldbus cable shield connected to the module.

  • Page 12: Electrical Installation

    General cabling instructions Arrange the bus cables as far away from the motor cables as possible. Avoid parallel runs. Use bushings at cable entries. RS-485 connection RS-485 cable is connected to connector X1 on the FMBA-01 Modbus Adapter module. Description SHLD Bus cable shield.

  • Page 13: Bus Termination

    Bus termination Bus termination is required to prevent signal reflections from the bus cable ends. The FMBA-01 Modbus Adapter module is equipped with internal bus termination, which is configurable with jumper J1 pins. Termination should be activated on devices located at bus ends and deactivated on other devices. See the figure below.
  • Page 14 Technical data and diagnostics FMBA-01 Modbus Adapter module Enclosure: 20.5 21.3 Mounting: Into the option slot on the drive Degree of protection: IP20 Ambient conditions: The applicable ambient conditions specified for the drive in its manuals are in effect. Indicators: Three LEDs (HOST, RXD, TXD) Connectors: •...
  • Page 15 RS-485 link Compatible devices: All RS-485 compliant devices Medium: Shielded twisted pair cable, impedance 100 to 150 ohm • Termination: 120 ohms (built in the FMBA-01 Modbus Adapter module) Topology: Trunk line, drop lines allowed Transfer rate: 5 Mb/s max.
  • Page 16 ABB Oy ABB Inc. AC Drives Automation Technologies P.O. Box 184 Drives & Motors FI-00381 HELSINKI 16250 West Glendale Drive FINLAND New Berlin, WI 53151 Telephone +358 10 22 11 +358 10 22 22681 Telephone 262 785-3200 Internet http://www.abb.com 800-HELP-365...

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