REC ACTIVE BMS 4S
5
www.rec-bms.com
Setting the RS-485 Address:
Address of the BMS unit is selected via Address pins. Factory address is 2 . Formula for changing address is:
ActiveBMS 𝐴𝐷𝐷𝑅𝐸𝑆𝑆 = 2
2
∗ 𝐴𝑑𝑑𝑟𝑒𝑠𝑠 𝑝𝑖𝑛 3
̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅ + 2
1
∗ 𝐴𝑑𝑑𝑟𝑒𝑠𝑠 𝑝𝑖𝑛 2
̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅̅ + 2
0
! If multiple BMS units are used distinguished addresses should be set to avoid data collision on the RS-485
communication bus!
BMS Unit Connector:
Before starting assembly please go to website:
http://www.te.com/catalog/pn/en/776164-1?RQPN=776164-1
…and read connector assembly datasheet:
AMPSEAL Automotive Plug Connector and Header Assembly
in Application Specification and
AMPSEAL Automotive Plug Assemblies 776268…
in Instruction Sheet ( U. S. ).
BMS Unit Connector, Cells part:
Connect each cell to the BMS unit cell connector plug. Use silicon wires with cross section of 0.5 – 1.4 mm
2
(20-16
AWG).
!
Before inserting the connector check voltages and polarities with voltmeter of each connection!
Figure 3:
Battery pack connection plug – front side.
