Toshiba TOSVERT VF-nC3 Instruction Manual page 173

 Configuration of RS485 connector and wiring
Termination
resistor
Master
6
Pin-4
RXD+/TXD+
RXD-/TXD-
Pin-5
SG
Pin-8
 Connect only Pin-4, 5, 8 when manufacturing on the communication cable on the user side.
Never use pin-7. Note 1)
In case branch cables, use the terminal board or refer to following table.
Full length must be within 500m and stab length of branches must be within 1m each.
Examples of products available on the market (as of October 2010) Note 2)
Product
Jack / jack type branch adaptor
Branch connector
Branch connector with termination resistor
Rosette (additional 8 units)
Note 1) Pin-7 provides power to the extension panel for option. Do not use this pin for RS485 communication.
Incorrect connect may result in the inverter malfunction or failure.
Note 2) All pins of these connectors are connected. Pull out pins except pin-4, 5, 8 by cable side.
Inverter viewed
from bottom
Pin-1
Pin-8
Straight
Slave
RXD+/TXD+
RXD-/TXD-
SG
BMJ-8
BMJ-8P
OMJ-88R
F-66
Pin
Name
number
1 -
2 -
3 (SG)
4
RXD+/TXD+
5
RXD-/TXD-
6 -
7 P8
8 SG
Straight
Slave
RXD+/TXD+
RXD-/TXD-
SG
Termination resistor : 100 to 120Ω-1/4W or more
Type Maker
SANWA DENKI
BJ8888W
KOGYO CO.,LTD.
HACHIKO ELECTRIC
CO.,LTD.
E6581595
RS485
Description
communication
For factory
Do not connect
Ground
Same phase
reception data
Using
Anti-phase
reception data
Open
Power supply Do not connect
for option
Ground Using
Straight
Termination
Slave
resistor
RXD+/TXD+
RXD-/TXD-
SG