Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 627

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 and configuration of PU connector communication system
• System configuration
FR-DU08
Operation
panel
connector
FR-ADP
(option)
RJ-45 connector
• Wiring between a computer and an inverter for RS-485 communication
Computer Side Terminals
Signal name
RDA
RDB
SDA
SDB
RSA
RSB
CSA
CSB
SG
FG
*1 Make connection in accordance with the Instruction Manual of the computer to be used with. Fully check the terminal numbers of the computer
since they vary with the model.
NOTE
• When performing RS-485 communication with multiple inverters, use the RS-485 terminals. (Refer to
• Computer-inverter connection cable
Refer to the following for the connection cable (RS-232C to RS-485 converter) between the computer with an RS-232C
interface and an inverter. Commercially available products (as of February 2015)
Interface embedded cable
DAFXIH-CAB (D-SUB25P for personal computer)
DAFXIH-CABV (D-SUB9P for personal computer)
+
Connector conversion cable DINV-485CAB (for inverter)
Interface embedded cable dedicated for inverter
DINV-CABV
*2 The conversion cable cannot connect multiple inverters. (The computer and inverter are connected in a 1:1 pair.) This product is an RS-
232C to RS-485 conversion cable that has a built-in converter. No additional cable or connector is required. For the product details, contact
the manufacturer.
626
5. PARAMETERS
5.15 (N) Communication operation parameters
Inverter
PU
RS-485
connector
interface/
terminals
RJ-45 connector
Communication cable
Description
Receive data
Receive data
Send data
Send data
Request to send
Request to send
Clear to send
Clear to send
Signal ground
Frame ground
Model
*2
Station 0
Computer
Inverter
PU
connector
RJ-45
connector
Communication cable
Cable connection and signal direction
Communication cable
∗1
0.2 mm
Diatrend Corp.
*2
Computer
RS-232C
connector
RS-232C
Maximum
cable
15 m
RS-232C-RS-485
converter
Communication cable
Inverter
PU connector
SDA
SDB
RDA
RDB
2
or more
SG
page
Manufacturer
Station 0
Inverter
PU
connector
RJ-45
connector
628.)