Chapter 8 Communication Function
8-2
8.2 Specifications
Category
Specifications
Communication method
RS-485
Transfer form
Bus type, Multi drop Link System
Inverter series
SV-iV5 series
Converter
Embedded with RS-232
Number of connected inverters Max. 16
Transfer distance
Max. 1,200m (recommend within 700m)
Recommended cable for
communication
0.75mm
2
(18AWG), Shield Type Twisted-Pare Wire
Installation form
Connect to S+,S-, CM of the terminal block
Communication Power
Use the power that are insulated from the inner part of inverter as communication
power(supplied from inverter)
Communication Speed
Select out of 1,200/2,400/9,600/19,200/38,400 bps
Control procedure
Unsynchronized communication system
Communication system
Half duplex system
Letter system
Modbus-RTU: BINARY LS Bus: ASCII
Stop bit length
1 bit/2 bit
Sum check
2 byte
Parity check
None/Even/Odd
8.3 Structure of communication system
RS-485 terminal connection: connect to S+, S- of the terminal block (see Chapter 4 Wiring)
Number of connectable inverters: up to 16 units
Number of extendable addresses(St ID):1~250
Length of effective communication lines: possibly 1,200m in total. Keep it below 700m for stable communication.
Please use communication Repeater to enhance the communication speed if you have to use communication cable above
1,200m or to connect additional inverter. It is effective to reduce the noise influence from communication by environment.
PC
Inverter.#1
Inverter.#2
Inverter.#n
RS-232/485
Converter
Содержание LSLV-iV5 Series
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