LS iS5 Com Modbus eng.pdf

User Manual

MODBUS-RTU

Option Board for

SV-iS5 Series

Read this manual carefully before using the MODBUS-RTU Option board

and follow the instructions exactly.

After reading this manual, keep it at handy for future reference.

LG Industrial Systems

Thank you for purchase of LG Modbus-RTU Option Board!

SAFETY PRECAUTIONS

Always follow safety precautions to prevent accidents and potential hazards from occurring.

Safety precautions are classified into “WARNING” and “CAUTION” in this manual.

Indicates a potentially hazardous situation which, if not avoided,

WARNING

CAUTION

can result in serious injury or death.

Indicates a potentially hazardous situation which, if not avoided,

can result in minor to moderate injury, or serious damage to the

product.

Throughout this manual we use the following two illustrations to make you aware of safety

considerations:

Identifies potential hazards (under certain conditions 믨솦 ).

Read the message and follow the instructions carefully.

Identifies shock hazards(under certain conditions 믨솦 ).

Particular attention should be directed because dangerous voltage may be present.

Keep this manual at handy for quick reference.

CAUTION

Do not touch the CMOS components unless the board is grounded.

ESD can cause break down of CMOS components.

Do not change the communication cable with the inverter power is turned on.

Otherwise, there is a danger of connecting error and damage to the board.

Make sure to precisely insert the connector of inverter and option board

Otherwise, there is a danger of connecting error and damage to the board.

Check the parameter unit when setting the parameters.

Otherwise, there is a danger of connecting error and damage to the board.

INTRODUCTION

By using a MODBUS-RTU Option board, SV-iS5 inverter can be connected to a MODBUS-RTU network.

1.1.

When you use the MODBUS-RTU Option Card …

Inverter can be controlled and monitored by the sequence program of the PLC or other master module. The

card provides a terminal block for an RS-485 interface. Up to 32 drives or other Modbus slave devices may

be connected in a multi-drop fashion on the RS-485 Modbus network and may be monitored or controlled by

a single PLC or PC.

1.1.1 Interfacing type of RTU Reference:

- Allows the drive to communicate with any other computers.

- Allows connection of up to 31 drives with multi-drop link system.

- Ensure noise-resistant interface.

Users can use any kind of RS232-485 converters. However a converter that has built-in ‘automatic RTS

control’ is highly recommended. The specifications of converters depend on the manufacturers. Refer to the

converter manual for detailed converter specifications.

1.1.2 Before Installation

Before installation and operation, this manual should be read thoroughly. If not, it can cause personal injury

or damage other equipment.

SPECIFICATION

2.1.

Performance specification

Items

Specifications

Communication method

RS485

Transmission form

Bus method Multi-drop Link System

Applicable inverter

IS5 series drive

Number of drives

Maximum 31 drives connectable

Transmission distance

Max. 1200m (Less than 700 m recommended)

Converter

RS232-485, Use PC with RS232 card embedded

2.2.

Hardware Specifications

Items

Specifications

Installation

CN2 connector on the inverter control board

Power

Control B/D

From inverter power supply

Supply

Comm. B/D

From control board (insulated)

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