B–3

L2002 Inverter

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

communicationsSerial cable with RJ45 end connector

Dust cover

B Appendix

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

Description

 

 

 

 

 

 

1

Not used. Do not connect

 

 

 

2

Not used. Do not connect

 

 

 

3

Not used. Do not connect

 

 

 

4

Not used. Do not connect

 

 

 

5

SP

Send/Receive data Positive

 

 

 

6

SN

Send/Receive data Negative

 

 

 

7

Not used. Do not connect

 

 

 

8

Not used. Do not connect

 

 

 

 

HITACHI

 

 

POWER

 

 

 

 

ALARM

 

 

 

Hz

 

 

5 0.0 A

RUN

STOP PRG

RUN RESET

FUNC. 1 2 STR

L2002

8 7 6 5 4 3 2 1

S S

Not used N P Not used