Connection Unit Communication Board
Open the Connection Unit cover to access the communication board to:
connect a standard RJ45 connector for Ethernet.
connect RS485 wires to the terminal blocks for RS485 connection. There are
two 3-pin terminal blocks, one for connecting the preceding device in the bus
and one for connecting the following device. Additionally, the RS485 port has
a built-in surge protection.
Figure 31: Connection Unit Communication board
Removing the Connection Unit Cover
If the Connection Unit is not already removed, remove it as described in the following
section.
To remove the Connection Unit cover:
1. Turn OFF the inverter ON/OFF switch, and wait until the green LED is blinking ,
indicating that the DC voltage is safe (<50V), or wait five minutes before
continuing to the next step.
2. Disconnect the AC to the inverter by turning OFF the circuit breakers on the
distribution panel.
3.
Open the Connection Unit cover:
a. Release the six Allen screws of the cover.
b. Tilt the top of the cover towards you.
c. Slide the cover down and remove it.
Chapter 6: Setting Up Communication 65
Three Phase Inverter with Synergy Technology Installation MAN-01-00402-1.2
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