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Delta RPI-M20A User Manual

Delta RPI-M20A
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Terminal Resistor
Terminal Resistor
120Ω(1/2W)
DATA+ to DATA-
120Ω(1/2W)
DATA+ to DATA-
RS485/USB
or
RS485/RS232
Data Format:
Baud rate: 9600, 19200 (default), or 38400
Data bits: 8
Stop bit: 1
Parity: N/A
4.4.1. RS-485之连接
RS-485端子的定义如表4-5。不同的RS-485连接方式,其终端电阻设定方式
亦有所不同。
当逆变器为单台安装时,安装者需将该台之终端电阻设置为ON。
• 当逆变器为多台串联时,安装者需将第一台与最后一台逆变器之终端电阻
设置为ON,其余机子则为OFF。请参考图4-7
终端电阻的设定方式请参考表4-6
Pin Function
1 VCC (+12V)
2 GND
3 DATA+
4 DATA-
5 DATA+
6 DATA-
表 4-5 RS-485端子定义
图4-7 多台逆变器串接通讯
1
2
3
4
5
6
72
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Delta RPI-M20A Specifications

General IconGeneral
BrandDelta
ModelRPI-M20A
CategoryInverter
LanguageEnglish

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