Mitsubishi Electric GT1685 Connection Manual page 541


Precautions when preparing a cable
(1) Cable length
The length of the RS-485 cable must be 500m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
1.4.1 GOT connector specifications
(3) Inverter connector specifications
(a) Pin layout in the PU port
When seen from the front of the inverter
(receptacle side)
Modular jack
Pin No. Signal name
1 GND (SG)
2 (P5S)
3 RXD+ (RDA)
4 TXD- (SDB)
5 TXD+ (SDA)
6 RXD- (RDB)
7 GND (SG)
8 (P5S)
The contents inside ( ) indicate symbols described
in the inverter manual.
The pins number 2 and 8 (P5S) are connected to
the power supply for an operation panel or a
parameter unit.
Do not use them in RS-485 communication.
(b) Connector of cable between FREQROL Series
inverters
Use the commercial connectors and cables shown
in the table below or the comparable
products.(Refer to the manual for the inverter.)
Name Model name Specifications
Connector 5-554720-3 RJ45 connector
Modular
ceiling
BMJ-8
rosette
(Distributor)
Cable
conforming to
SGLPEV
Cable EIA568
0.5mm 4P
(such as cable
10BASE-T)
Remark
Not used
Not used
Manufacturer
Tyco International,
Ltd
HAKKO ELECTRIC
- CO.,LTD.
TEL(03)-3806-9171
MITSUBISHI
CABLE
INDUSTRIES, LTD.
(4) Terminal block layout in the FR-A5NR computer link
option
Attach this option to the A500 and F500 Series.
Terminal block
Screw size: M3
SDA SDB RDA RDB RDR SG
Terminal
symbol
(5) Terminal block layout in the FR-E7TR control
terminal option
Mount the FR-E7TR to the E700 series.
Set the terminal 2/SG switch to the
OPEN OPEN
right position (ON) to change the
terminal 2 to the terminal SG.
100 100
To the GOT or
4
10
the previous
inverter
SDA SDB RDA RDB SG
SDA SDB RDA RDB SG
SDA SDB RDA RDB RUN FU
SDA SDB RDA RDB RUN FU
FM
A B C

Connecting terminating resistors
(1) GOT side
When connecting a PLC to the GOT, a terminating
resistor must be connected to the GOT.
(a) For GT16, GT15, GT12
Set the terminating resistor setting switch.
(b) For GT14, GT11, GT10
Set the terminating resistor selector switch.
For the procedure to set the terminating resistor, refer
to the following.
1.4.3 Terminating resistors of GOT
15. INVERTER CONNECTION
15.3 Connection Diagram
B
A C
Connected to the GOT
2
2
O
N
SE SE
RM RH MRS RES SD PC STF STR SD SD
RL
To the next inverter
15 - 31
9
10
11
12
13
14
15
16