Creating An Rs485 Bus Connection - SolarEdge SE3000H-US Installation Manual

Creating an RS485 Bus Connection

10. The inverter is configured by default to LAN. If r econfiguration is required:
a. Make sure the ON/OFF switch is OFF.
b. Turn ON the AC to the inverter by turning ON the circuit breaker on the main distribution panel.
c. Turn ON the Safety Switch.
WARNING!
ELECTRICAL SHOCK HAZARD. Do not touch uninsulated wires when the inverter cover is
removed.
AVERTISSEMENT!
RISQUE D'ÉLECTROCUTION, ne touchez pas les fils non isolés lorsque le couvercle de
l'onduleur est retiré.
d. Use the internal user buttons to configure the connection, as described in Communication on
page 41.
NOTE
If your network has a firewall, you may need to configure it to enable the connection to the
following address:
Destination Address: prod.solaredge.com
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TCP Port: 22222 (for incoming and outgoing data)
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11. Verify the connection, as described in Verifying the Connection on page 61.
Creating an RS485 Bus Connection
The RS485 option enables creating a bus of connected inverters, consisting of up to 31 slave inverters and
1 master inverter. Using this option, inverters are connected to each other in a bus (chain), via their
RS485 connectors. The first and last inverters in the chain must be terminated as described on page 60.
RS485 wiring specifications:
Cable type: Min. 3-wire shielded twisted pair (a shielded Ethernet cable (Cat5/5E STP) may be used)
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Wire cross-section area: 0.2- 1 mm²/ 24-18 AWG (a CAT5 cable may be used)
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Maximum nodes: 32
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Maximum distance between first and last devices: 1 km /3300 ft.
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NOTE
If using a cable longer than 10 m/33 ft in areas where there is a risk of induced
voltage surges by lightning, it is recommend to use external surge protection
devices. For details refer to:
https://www.solaredge.com/sites/default/files/overvoltage_surge_protection_
na.pdf.
If grounded metal conduit are used for routing the communication wires, a lightning
protection device is not required.
If not using surge protection, connect the grounding wire to the first inverter in the RS485 chain;
make sure the grounding wire is not in contact with other wires. Connect the grounding wire to the
grounding bus-bar in the DC Safety Unit.
NOTE
An additional RS485 port (RS485-Plug-in) is available from SolarEdge, allowing
configuration of multiple RS485 buses for communications in large sites; Refer to
http://www.solaredge.us/files/pdfs/RS485_expansion_kit_installation_guide.pdf).
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Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1