26
Control circuit specifications
RS-485 communication
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.
The protocol can be selected from Mitsubishi Electric drive unit and MODBUS RTU.
PU connector pin-outs
For further details,
Refer to page 181
Conforming standard: EIA-485 (RS-485)
Transmission form: Multidrop link
Communication speed: Maximum 38400 bps
Overall extension: 500m
Pin
Number
Name
Description
1)
SG
Earth (ground)
(connected to terminal 5)
2)
—
Parameter unit power supply
3)
RDA
Drive unit
4)
SDB
Drive unit send-
5)
SDA
Drive unit send+
6)
RDB
Drive unit receive-
7)
SG
Earth (ground)
(connected to terminal 5)
8)
—
Parameter unit power supply
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 with a combination of the FR-D700-G series, FR-F500J series, FR-E500 series
and FR-S500 series, incorrect connection of pins No.2 and 8 (parameter unit power supply) of the above PU
connector may result in the drive unit malfunction or failure.
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.
8)
1)
to
Drive unit
(receptacle side)
Viewed from bottom
Содержание FR-D720-0.2K-G
Страница 45: ...34 MEMO ...
Страница 293: ...290 MEMO ...
Страница 294: ...291 APPENDIX This chapter provides the APPENDIX of this product Always read the instructions before using the equipment ...