Wiring Of Pu Connector - Mitsubishi Electric 800 Series Instruction Manual

3.3

Wiring of PU connector

Using the PU connector as a computer network port enables communication operation from a personal computer, etc.
When the PU connector is connected with a personal, FA, or other computer by a communication cable, a user program can
run and monitor the inverter or read and write to parameters.
 PU connector pin-outs
Pin number
1
2
3
4
5
6
7
8
NOTE
• Pins No. 2 and 8 provide power to the operation panel or parameter unit. Do not use these pins for RS-485 communication.
• Do not connect the PU connector to the computer's LAN board, FAX modem socket, or telephone modular connector. The
product could be damaged due to differences in electrical specifications.
 Wiring method
• Connecting one inverter (four-wire type)
Programmable controller
Built-in RS-485
Communication
port
cable
RDA
RDB
SDA
SDB
SG
128
3. RS-485 Communication
3.3 Wiring of PU connector
Inverter
(Receptacle side)
Front view
8 to
Name
SG Earth (ground) (connected to terminal 5)
— Operation panel power supply
RDA Inverter receive+
SDB Inverter send-
SDA Inverter send+
RDB Inverter receive-
SG Earth (ground) (connected to terminal 5)
— Operation panel power supply
Distributor
5 5
Terminating
4 4
resistor
3 3
6 6
1 1
5 4 3 6 1
Inverter
S S R R S
PU connector
D D D D G
A B A B
1
Description