Mitsubishi Electric FR-A820-00046 Instruction Manual page 783

Parameters
Tab. 5-265: RS-485 terminal description
Connection of RS-485 terminals and wires
The size of RS-485 terminal block is the same as the control circuit terminal block. Refer to page 2-43
for the wiring method.
NOTES To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.
When the FR-A820-01250(22K) or lower, or the FR-A840-00620(22K) or lower is used with a plug-in
option, lead the wires through the hole on the side face of the front cover for wiring of the RS-485
terminals.
Cut off with a
Cut this part with
nipper, etc.
a nipper or the like.
When the FR-A820-01540(30K) of higher, or the FR-A840-00770(30K) or higher is used with a plug-
in option, lead the wires on the left side of the plug-in option for wiring of the RS-485 terminals.
FR-A800
Name
RDA1 (RXD1+)
RDB1 (RXD1 –)
RDA2 (RXD2+)
RDB2 (RXD2 –)
SDA1 (TXD1+)
SDB1 (TXD1–)
SDA2 (TXD2+)
SDB2 (TXD2 –)
P5S (VCC)
SG (GND)
(N) Operation via communication and its settings
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)
5 V
Permissible load current 100 mA
Earthing (grounding)
(connected to terminal SD)
5 - 603