3 Background Information
SMA Solar Technology AG
Service Manual for Installers
7
SBSx.x-10-CAN-SG-en-10
3
Background Information
Sometimes, during commissioning of the Sunny Boy Storage, the CAN interface of the Sunny Boy Storage fails to
detect the connected batteries or the backup box (depending on the system configuration).
Possible causes:
• The termination of the communication cable between the battery and inverter is faulty.
• The cabling between battery and inverter is not correct.
• The communication cable used to connect the CAN interfaces on the battery interface module in the inverter with
the battery is not suitable (see requirements in the manual of the inverter).
• The inverter has not been grounded correctly.
• The software version of the inverter is not up to date.
• There is a defect in the inverter.
The functional test described here was developed to exclude a defect of the CAN interface on the battery interface
(BIM) of the Sunny Boy Storage.
The function test does not require a connection between the inverter and the battery.
The only purpose of the function test is to exclude a device defect at the Sunny Boy Storage with
reasonable certainty. It does not constitute a full check of the CAN bus.
Summary of Contents for SUNNY BOY STORAGE 3.7-10
Page 12: ...www SMA Solar com...
