(N) Operation via communication and its settings
Tab. 5-225: 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 2-53
for the wiring method.
To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.
When the FR-F820-01250(30K) or lower, or the FR-F840-00620(30K) 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
Cut off with a
Cut this part with
a nipper or the like.
When the FR-F820-01540(37K) of higher, or the FR-F840-00770(37K) 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.
Upon delivery the FR-F800-E inverter models are not equipped with the RS-485 terminal block.
5 - 456
RDB1 (RXD1 –)
RDB2 (RXD2 –)
SDB2 (TXD2 –)
Inverter receive +
Inverter receive –
Inverter receive + (for branch)
Inverter receive – (for branch)
Inverter send +
Inverter send –
Inverter send + (for branch)
Inverter send –(for branch)
Permissible load current 100 mA
(connected to terminal SD)