11-1
CHAPTER 11 - RS485 COMMUNICATION
11.1 Introduction
Inverter can be controlled and monitored by the sequence program of the PLC or other master
module.
Drives or other slave devices may be connected in a multi-drop fashion on the RS-485 network and
may be monitored or controlled by a single PLC or PC. Parameter setting and change are available
through PC.
z Features
Inverter can be easily applied for factory automation because operation and monitoring is available
by User-program.
* Parameter change and monitoring is available via computer.
(Ex: Accel/Decel time, Freq. Command etc.)
* Interface type of RS485 reference:
1) Allows the drive to communicate with any other computers.
2) Allows connection of up to 31 drives with multi-drop link system.
3) Noise-resistant interface.
Users can use any kind of RS232-485 converters. The specifications of converters depend on the
manufacturers. Refer to the converter manual for detailed specifications.
z Before installation
Before installation and operation, this should be read thoroughly. If not, it can cause personal injury
or damage to other equipment.
11.2 Specification
z Performance specification
Item Specification
Communication
method
RS485
Transmission form Bus method, Multi drop Link System
Applicable inverter SV-iG5A series
Converter RS232 converter
Connectable drives Max 31
Transmission distance Max. 1,200m (Within 700m Recommend)
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