Mitsubishi Electric FR-A802-P Instruction Manual page 57

Communication connectors and terminals
RS-485 terminal wiring method
• Operating two inverters in parallel
• Operating three inverters in parallel
 Set the terminating resistor switch to 100 .
NOTE
• Refer to the diagrams above to connect the inverters with RS-485 cables. Wind the wires together around each ferrite core
(accessory of the inverter) once (two turns). Install each ferrite core on within 10 cm of the inverter.
• To connect multiple inverters using RS-485 distributors, refer to the following.
To the earth (ground) terminal of the master inverter
To the reception terminals of the master inverter
To the transmission terminals of the master inverter
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INSTALLATION AND WIRING
Ferrite core
1
GND GND
Master station
Ferrite core
1
GND GND GND
Master station Slave station 1
VCC
1
GND
Slave station
Ferrite core
GND GND
Slave station 2
Slave 1
TXD RXD VCC
1
Slave 2
TXD RXD