Connecting the Data Cable of the Lithium-Ion Batteries
Qualified person
Requirements:
The total length of the communication bus must not exceed 30 m. Keep in mind that the communication bus possibly connects several nodes.
Cable requirements:
Classification: CAT5e
Type of plug: RJ45
PIN assignment of Com-Sync interface for CAN battery communication:
Pin | Assignment |
|---|---|
1 | reserved by SMA, not usable |
2 | Ground (for battery and cluster communication) |
3 | SYNC-High (for cluster communication) |
4 | CAN-High (for battery communication) |
5 | CAN-Low (for battery communication) |
6 | SYNC-Low (for cluster communication) |
7 | reserved by SMA, not usable |
8 | reserved by SMA, not usable |
Procedure:
- Plug the data cable into a free pin connector ComSync on the Sunny Island ( > Connecting the Data Cable).
- Connect the other end of the data cable to the battery management of the lithium-ion battery (see battery manufacturer documentation).
- Ensure that the CAN communication bus is closed at each end, e.g. with a terminator.
By default, the Sunny Island has a RJ45 connector in the ComSyncOut socket. This RJ45 connector has an integrated 100 Ohm terminator between CAN-H and Can-L as well as between Sync-H and Sync-L. RJ45 connectors with a 120 Ohm resistor can be used for both bus systems (CAN and SYNC) in accordance with the CAN specifications.