Connecting CAN communication cable
Qualified person
Communication between inverter and battery
- Communication between the inverter and the battery takes place via the battery communication cable via CAN bus.
Additionally required material (not included in the scope of delivery):
1 battery communication cable for the communication between inverter and battery
Alternatively, 1 pre-assembled battery communication cable (SMA order number: HS-COM-CBL-3-10) when using SMA Home Storage
Bootlace ferrules (only for multi-core stranded wire, usable length of the ferrule at least 12 mm)
Network cable (SBS to switch, battery to switch) requirements:
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Twisted pair conductors
Cable category: minimum CAT5e
Cable with shielding: Yes
Conductor cross-section: 0.2 mm² to 1.5 mm²
External diameter: 5.3 mm to 7 mm
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Maximum cable length: 10 m
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UV-resistant for outdoor use.
Recommendation: Use a network installation cable with 1-core rigid wire
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Comply with the requirements of the battery manufacturer.
Procedure:
- Remove 1 sealing plug from the cable support sleeve.
- Lead the communication cable through the swivel nut and threaded sleeve.
- Strip the communication cable 40 mm to 50 mm.
- Trim the cable shield to a length of 15 mm and fold it over the cable sheath.
- Strip the insulation on the insulated conductors each by 12 mm. The CAN L and CAN H must be a twisted pair.
- If necessary, trim unused insulated conductors flush with the cable sheath or fold it over the cable sheath.
- When using a multi-core stranded wire, provide the conductors with bootlace ferrules.
- Connect the conductors of the communication cables to the terminal. Pay attention to the assignment of the terminal and communication connection on the battery and make sure that CAN L and CAN H consist of a pair of conductors. For additional information on how to connect the battery, see technical information "Approved Batteries and Information on Battery Communication Connection" at www.SMA-Solar.com.
