Communication Operation And Setting; Wiring And Configuration Of Pu Connector - Mitsubishi Electric FR-D720-0.2K-G Instruction Manual

S-pm geared motor drive unit fr-d700-g series

Table of Contents

4.17 Communication operation and setting

Purpose

Communication operation from

PU connector

Restrictions on parameter write

through communication

Operation selection at a

communication error

4.17.1 Wiring and configuration of PU connector

Using the PU connector, you can perform 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 drive unit or read and write to parameters.

(1)

PU connector pin-outs

NOTE

 Pins No. 2 and 8 provide power to the parameter unit. Do not use these pins for RS-485 communication.

 When making RS-485 communication between the FR-D700-G series, FR-E500 series, FR-S500 series and FR-F500J

series, incorrect connection of pins No.2 and No.8 (parameter unit power supply) of the above PU connector may

result in the drive unit malfunction or failure.

 When multiple drive units are connected using pins No.2

and No.8, power is provided from the drive unit which is

powered ON to the drive units which are powered OFF in

case drive units which are powered ON and OFF are

mixed. In such case, a protective circuit of the drive unit,

which is ON, is activated to stop communication.

When connecting multiple drive units for RS-485

communication, make sure to disconnect cables from

No.2 and No.8 so that pins No.2 and No.8 are not

connected between drive units.

 When using the RS-485 converter which receives power

from the drive unit, make sure that power is provided from

one drive unit only. (Refer to the figure below.)

 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.

Initial setting of computer link

communication (PU connector)

MODBUS RTU communication

specifications

Communication EEPROM write

selection

Stop mode selection at

communication error

Drive unit

(receptacle side)

viewed from bottom

Computer

Station 1

RS-232C

Drive unit

connector

RS-232C

RS-485

converter

Distributor

Connect pins No.2 and No.8

of one drive unit and a converter only.

Power supply