Power Electronics Freesun String Supervisor FSITG0012AI, Getting Started Manual

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FREESUN SERIES
– String Supervisor
POWER ELECTRONICS
14
INSTALLATION AND CONNECTION
5.2. Wiring String Supervisor – Freesun
The connection between the Freesun and the String Supervisor can be done in two ways depending
on the series. The Freesun LVT Series will have a CAN interface and the Freesun HE and HES
series will be connected through RS485. The two types of connection are described below:
5.2.1. String Supervisor Wiring – Freesun LVT Series
Figure 5.3: Connection with String Supervisor for Freesun LVT Series.
CONSIDERATIONS
The cable for CAN connection between the solar inverter and the String Supervisor must meet the
following specifications to ensure proper operation:
o
Family: CAN-BUS 2x2x0.75mm² VIOLET
o
Section: 0.75mm²
o
Colour code: DIN 47100
o
Ext. cover: PVC
o
Characteristic impedance:
120Ω
The recommended maximum cable length is between 75m and 100m for a data transmission speed of
500Kbps. For longer distances please contact Power Electronics.
Excessive bending of CAN cables can reduce their ability to meet t
he CAN specification. Standard „Thick‟
cables shall have a bending radius of greater than 75mm (3”). Standard „Thin‟ cables shall have a bending
radius of greater than 50mm (2”).
These generic cable types are available in a variety of different offerings such as FLEX, HAZ-DUTY,
CLASS I (600V), UV RESISTANT, etc.