Mitsubishi Electric FR-A800, Instruction Manual

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(N) Operation via communication and its settings Parameters
5 - 602
5.15.2 Wiring and configuration of RS-485 terminals
RS-485 terminal layout
NOTES When performing RS-485 communication with multiple inverters, use the RS-485 terminals.
(Refer to page 5-604.)
Computer-inverter connection cable
Refer to the following for the connection cable (RS-232C
⇔
RS-485 converter) between the com-
puter with an RS-232C interface and an inverter.
Commercially available products (as of November 2013)
The conversion cable cannot connect multiple inverters. (The computer and inverted are connect-
ed in a 1:1 pair.) This product is a RS-232C
⇔
RS-485 conversion cable that has a built-in converter.
No additional cable or connector is required. For the product details, contact the manufacturer.
Refer to the following table when fabricating the cable on the user side.
Commercially available products (as of November 2013)
Do not use pins No. 2 and 8 of the communication cable.
I002384E
Fig. 5-302: RS-485 terminals layout
Model Manufacturer
Interface embedded cable
DAFXIH-CAB (D-SUB25P for personal computer side)
DAFXIH-CABV (D-SUB9P for personal computer side)
+
Connector conversion cable DINV-485CAB (for inverter side)
Diatrend Corp.
Interface embedded cable dedicated for inverter
DINV-CABV
Name Model Manufacturer
Communication cable
SGLPEV-T (Cat5e/300m) 24AWG × 4P Mitsubishi Cable Industries, Ltd.
RJ-45 connector 5-554720-3 Tyco Electronics
+ - + TXD RXD - VCC GND
+ - + TXD RXD - VCC GND
RDA1
(RXD1+)
RDB1
(RXD1-)
RDA2
(RXD2+)
RDB2
(RXD2-)
SDA1
(TXD1+)
SDB1
(TXD1-)
SDA2
(TXD2+)
SDB2
(TXD2-)
P5S
(VCC)
SG
(GND)
P5S
(VCC)
SG
(GND)
Terminating resistor switch
Initially-set to "OPEN".
Set only the terminating resistor switch of the
remotest inverter to the "100
Ω
" position.
OPEN
100