Connecting The Inverter To Modbus - Hitachi L2002 Instruction Manual

Connecting the Inverter to ModBus

Follow the steps in this section to connect the inverter to the ModBus network.
1. Open Serial Port Cover - The inverter keypad has a hinged dust cover protecting the
serial port connector. Lift the cover from the bottom edge, and tilt upward as shown
(below left).
2. Modular Interconnect Removal - With the serial port cover opened, notice the RJ45
modular connector behind it. Connect the serial cable and engage the locking tab in
the connector as shown (below right).
RJ45 modular
communications
connector
3. Cable Wiring - The inverter communications
port uses RS485 differential transceiver. The
pinout is shown to the right and listed below. Be
sure the cable connection you make matches the
diagram.
Pin Symbol
1 —
2 —
3 —
4 —
5 SP
6 SN
7 —
8 —
Dust
cover
Description
Not used. Do not connect
Not used. Do not connect
Not used. Do not connect
Not used. Do not connect
Send/Receive data Positive
Send/Receive data Negative
Not used. Do not connect
Not used. Do not connect
L200 Inverter
2
Serial cable with RJ45 end
POWER
HITACHI
ALARM
Hz
5 0.0
A
RUN
PRG
STOP
RUN
RESET
2
FUNC. 1 STR
L200
2
8 7 6 5
S S
Not used N P
B–3
4 3 2 1
Not used