Installation Guide

2. Prepare to connect the RS485 wiring to one of the available RS485 ports of the
device. Note that some inverters have one RS485 port, some have two RS485 ports.
3. Pull out the RS485 connector located on the communication board, as shown in the
figure below.
Figure 16: Inverter RS485 connection
4.
Loosen the screws of RS485 terminal block pins B, A and G of the port you wish to
connect.
Figure 17: RS485 terminal block
5.
Insert the wire ends into the G, A and B pins shown above. Use Four- or six-wire
twisted pair cable for this connection.
You can use any color wire for each of the A, B and G connections, as long as:
The same color wire is used for all A pins the same color for all B pins and the
same color for all G pins
The wire for G is not from the same twisted pair as A or B.
6. Tighten the terminal block screws.
7. Push the RS485 terminal block firmly all the way into the communication board.
8.
If the inverter is at the end of the RS485 bus, terminate by switching a termination
Energy Meter with Modbus Connection MAN-01-00270-1.3
18 Installing and Connecting the Meter