Link Bus
The Link Bus connector provides power and communication to the Cell Interface modules. The
amount of current supplied by this connector is the sum of current consumed by all Cell Interface
modules in the system. Typically, this is connected to the Cell Interface module which is measuring
the most negative cell, with each subsequent Cell Interface module measuring increasingly positive
cells. Although any order of the Cell Interface modules in the Link Bus chain can be acceptable, the
order of the cells in the software registers and the Operator Interface may be not be as intuitive as
the aforementioned order (i.e. order of increasing potential).
Table 4. Link Bus connector pinout
Pin
Name
Description
Connected to Device
1
VBUS
DC power from Stack Switchgear
Cell Interface
2
COM
Power return from Stack Switchgear
Cell Interface
3
IPA
Link Bus differential pair plus
Cell Interface
4
IMA
Link Bus differential pair minus
Cell Interface
Table 5. Link Bus mating connector
Molex 43025-0400
Manufacturer
Molex Incorporated
Housing
43025-0400
Housing material
Nylon UL94V-0
Circuits
4
Crimp terminal
43030-0002
Wire gauge range
AWG20-24 stranded
Nuvation Energy Stack Switchgear - Product Manual
Document ID: NE-PM-003
18
Rev 1.0, 2020-09-03
