Mitsubishi Electric FR-A700 Series, Technical Manual

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83
1
S
PECIFI
C
A
T
IONS
SPECIFICATIONS
1.4.30 Wiring and arrangement of RS-485 terminals
(A700)(F700)
(1) RS-485 terminal block
(2) FR-E7TR RS-485 terminal block
RS-485 terminal can be used instead of a PU
connector connected to a standard control circuit
terminal to perform RS-485 communication. To do this,
attach a control terminal option, FR-E7TR.
Parameters need to be set are the same as ones need
for RS-485 communication with a PU connector.
Refer to page 365 for the detail of initial settings and
specification of RS-485 communication with RS485
terminal.
FR-E7TR
(3) Connection of RS-485 terminals and wires
Loosen the terminal screw and insert the cable into
the terminal.
Wire the stripped cable after twisting it to prevent it
from becoming loose. In addition, do not solder it.
Use a bar terminal as necessary.
*1 Undertightening can cause cable disconnection or
malfunction. Overtightening can cause a short circuit or
malfunction due to damage to the screw or unit.
Information on bar terminals
Introduced products (as of September, 2006)
: Phoenix Contact Co.,Ltd.
Bar terminal crimping tool: CRIMPFOX ZA3
(Phoenix Contact Co.,Ltd.)
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 bar terminal (without insulation
sleeve), use care so that the twisted wires do not
come out.
A700 F700 E700
Conforming standard EIA-485 (RS-485)
Transmission format Multidrop link
Communication speed MAX38400bps
Overall length 500m
Connection cable Twisted pair cable (4 pairs)
Name Description
RDA1(RXD1+) Inverter
RDB1(RXD1
-
) Inverter receive
-
RDA2(RXD2+) Inverter (for branch)
RDB2(RXD2
-
) Inverter receive
-
(for branch)
SDA1(TXD1+) Inverter send+
SDB1(TXD1
-
) Inverter send
-
SDA2(TXD2+) Inverter send+ (for branch)
SDB2(TXD2
-
) Inverter send
-
(for branch)
P5S(VCC) 5V Permissible load current 100mA
SG(GND) Ground (connected to terminal SD)
# F700
RXD
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
P5S
(VCC)
SG
(GND)
VCC
TXD
OPEN
Terminating resistor switch
Factory-set to "OPEN".
Set only the terminating resistor switch of
the remotest inverter to the "100
Ω
" position.
E700
1
0
OPEN OPEN
100 ǡ 100
S
O
URCE
S
O
URCE
SIN
K
SIN
K
V
II
SE
SDA SDB RDA RDB SG 2 SDA SDB RDA RDB SG 2
SDA SDB RDA RDB RUN FU SDA SDB RDA RDB RUN FU SE
10
4
RM RH MRS RES SD PC STF STR SD SD
A B C
FM RL
Terminating resistor switch
Factory-set to "OPEN".
Set only the terminating resistor switch of
the remotest inverter to the "100
Ω
"
position.
Terminal 2/SG switch
Set terminal 2/SG switch to the right position (ON) to
pass a shielded wire across terminal SG. As a result,
terminal 2 changes to terminal SG. (Note that analog
input of terminal 2 is made invalid)
RS-485
communication
terminal
Name Description
RDA (2 points) Inverter send+
RDB (2 points) Inverter send-
SDA (2 points) Inverter send+
SDB (2 points) Inverter send-
SG
RS-485 communication common, Analog
common(terminai2, 4)
Screw size M2
Tightening torque
*1
0.22N
⋅
m to 0.25N
⋅
m
Cable size
0.3mm
2
to 0.75mm
2
Screwdriver
Small flathead screwdriver
(tip thickness: 0.4mm/tip width: 2.5mm)
Terminal
Screw
Size
Bar Terminal Model
(with insulation
sleeve)
Bar Terminal Model
(without insulation
sleeve)
Wire
Size
(mm
2
)
M2 AI 0.5-6WH A 0.5-6 0.3 to 0.5
common
5mm
Cable stripping length