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Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual Page 34

Transistorized inverter, high function & low acoustic noise.
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2) When a computer having a RS-232C interface is used with inverters
Computer
RS-232C connector
Max. 15m
RS-232C cable
*Converter
RS-485 terminal
*Converter available on the market is required.
Note: 1. Use the connector, cables and converter which are available on the market.
Connector: RJ45 connector
x
Example: Nippon AMP Co., Ltd.
Cable: Cable conforming to EIA568B (such as 10BASE-T cable)
x
Example: SGLPEV 0.5mm×4P, Mitsubishi Cable Industries, Ltd.
RS-485/RS-232C converter
x
Example: FA-T-RS40, Industrial System Div., Mitsubishi Electric Engineering Co., Ltd.
: Cable with built-in interface DAFXI-CAB series, Connector conversion cable
DINV-485CAB, Dia Trend Co., Ltd.
<Wiring method>
1) Wiring of one computer and one inverter
Computer Side Terminals
Signal name
Description
RDA
Receive data
RDB
Receive data
SDA
Send data
SDB
Send data
RSA
Request to send
RSB
Request to send
CSA
Clear to send
CSB
Clear to send
SG
Signal ground
FG
Frame ground
2) Wiring of one computer and "n" inverters (several inverters)
Computer
RDA
RDB
SDA
SDB
RSA
RSB
*2
CSA
CSB
SG
FG
Note: 1. Connect the terminal resistor jumper only to the inverter remotest from the computer.
(Terminal resistor: 100 Ω)
2. Make connections in accordance with the instruction manual of the computer used.
Fully check the terminal numbers of the computer as they differ between models.
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Station 1
Station 2
Inverter
Inverter
PU connector
PU connector
Distribution terminal
10BASE-T cable
or
Cable connection and signal direction
10BASE-T Cable
*2
2
0.3mm or more
Terminal
resistor
jumper (*1)
SG
SG
Station 1
Station 2
Inverter
Inverter
23
INSTALLATION AND WIRING
Station n
Inverter
PU connector
Terminal resistor jumper
Inverter
PU connector
SDA
SDB
RDA
RDB
∗1 Terminal resistor
jumper
RDR
SG
SG
Station 3
Inverter

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