Wiring And Configuration Of Rs-485 Terminals - Mitsubishi Electric FR-A820-00046 Instruction Manual

(N) Operation via communication and its settings
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)
Model
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)
Interface embedded cable dedicated for inverter
DINV-CABV
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)
Name
Communication cable
RJ-45 connector
Do not use pins No. 2 and 8 of the communication cable.
5.15.2

Wiring and configuration of RS-485 terminals

RS-485 terminal layout
Fig. 5-302:
5 - 602
Model
SGLPEV-T (Cat5e/300m) 24AWG × 4P
5-554720-3
Terminating resistor switch
Initially-set to "OPEN".
Set only the terminating resistor switch of the
remotest inverter to the "100 Ω" position.
P5S SG SDA1
(VCC) (GND) (TXD1+)
OPEN
VCC GND + TXD
100
VCC GND + TXD
P5S SG SDA2
(VCC) (GND) (TXD2+)
RS-485 terminals layout
SDB1 RDA1 RDB1
(TXD1-) (RXD1+) (RXD1-)
- + RXD -
- + RXD -
SDB2 RDA2 RDB2
(TXD2-) (RXD2+) (RXD2-)
Parameters
Manufacturer
Diatrend Corp.
Manufacturer
Mitsubishi Cable Industries, Ltd.
Tyco Electronics
I002384E