Connecting Communication - SolarEdge SE330K Installation Manual

CAUTION!
DO NOT use an impact driver or any electrical tool to fasten the terminal
nuts.
ATTENTION!
N'utilisez PAS de visseuse à percussion ou d'outil électrique pour serrer les
écrous des bornes.
12. Tighten nut of the AC conduits.
13. Tighten PE glands to 5 N*m/3.69 lb*ft.
14. Place the Protective Cover on the AC terminal block and push until you hear a lock
click.
15. Close the front cover of the inverter and fasten the screws to 3.53 N*m/2.6 lb*ft in a
crossed pattern.

Connecting Communication

The SE330K inverters in large solar installations are connected in a communication
network to monitor system performance and identify any faults or issues.
The two common communication protocols used for inverter networks are CAN
(Controller Area Network) and RS-485 (Modbus protocol).
The CAN network is used for linking up to 13 SE330K inverters. The maximum distance
allowed between first and last inverter is 2460 ft.
IMPORTANT NOTE!
Only SE330K Inverters should be connected to the CAN bus network. Do not
connect inverters or devices other than SE330K Inverters to the CAN bus.
RS-485 is used to connect peripheral equipment such as meters, Power Plant Controller
(PPC) or other third-party equipment. The maximum distance allowed between the
inverter and a third party device is3280 ft.
In CAN network, one inverter acts as the Leader inverter. This Leader unit serves as the
gateway to external monitoring and direct data through a connected LAN router and an
internet link.
The other inverters in the system are Follower inverters, which report operational and
production data back to the Leader inverter, linked to the same bus.
The CAN protocol uses a single, shielded twisted pair cable to connect the inverters in a
daisy-chain layout. RS-485 networks also follow a daisy-chain design utilize shielded
twisted pair cabling. The CAN network requires proper line termination at the two
SE330K Inverter P/N: SE330K-xxxxxxxxx
Chapter 4: Installing the Inverter 58