Wiring And Arrangement Of Rs-485 Terminals - Mitsubishi Electric FR-F720-0.75K to 110K Instruction Manual

4.19.2 Wiring and arrangement of RS-485 terminals

(1) RS-485 terminal layout
OPEN
Terminating resistor switch
Factory-set to "OPEN".
Set only the terminating resistor switch of
the remotest inverter to the "100Ω" position.
100Ω
RDA1 RDB1 RDA2 RDB2
(RXD1+) (RXD1-) (RXD2+) (RXD2-)
SDA1 SDB1 SDA2 SDB2
TXD
(TXD1+) (TXD1-) (TXD2+) (TXD2-)
P5S SG P5S SG
(VCC) (GND) (VCC) (GND)
(2) Connection of RS-485 terminals and wires
Loosen the terminal screw and insert the cable into the terminal.
Screw size M2
Tightening
0.22N•m to 0.25N•m
torque
Cable size 2
0.3mm
Small
Screwdriver
(Tip thickness: 0.4mm /tip width: 2.5mm)
CAUTION
Undertightening can cause signal loss or malfunction. Overtightening can cause a short circuit or malfunction due to damage to
the screw or unit.
REMARKS
Information on blade terminals
Introduced products (as of March 2008)
Phoenix Contact Co.,Ltd.
Terminal Screw
Wire Size (mm
Size
M2
NICHIFU Co.,Ltd.
Terminal Screw
Wire Size (mm
Size
M2 0.3 to 0.75
Use shielded or twisted cables for connection to the control circuit terminals and run them away from the main and power circuits
(including the 200V relay sequence circuit).
When using the blade terminal (without insulation sleeve), use care so that the stranded wires do not come out.
RXD
VCC
2
to 0.75mm
flathead screwdriver
2
)
with insulation sleeve
0.3, 0.5 AI 0,5-6WH
Blade terminal product
2
)
number
BT 0.75-7
Communication operation and setting
Name
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
Wire the stripped cable after twisting it to prevent it from
becoming loose. In addition, do not solder it.
5mm
Use a blade terminal as necessary.
Blade Terminal Model
without insulation sleeve
A 0,5-6
Insulation product
number
VC 0.75
Description
Inverter receive+
Inverter receive-
Inverter receive+
(for branch)
Inverter receive-
(for branch)
Inverter send+
Inverter send-
Inverter send+
(for branch)
Inverter send-
(for branch)
5V
Permissible load current 100mA
Earth (Ground)
(connected to terminal SD)
Blade terminal
crimping tool
CRIMPFOX ZA3
Blade terminal
crimping tool
NH 67
4
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