Stack Bus - Nuvation Energy High-Voltage BMS Installation Manual

Pin Connection
7 GPI_ISO2_K
8 GPI_ISO3_K

3.3.6. Stack Bus

The Stack Bus connector accepts power and provides a communication channel from the Power
Interface. The Stack Bus provides 42 mA to the Stack Controller plus the summation of current
consumed by all Cell Interface modules in the system (25 mA per CI-12 or 31 mA per CI-16). 120 Ω
termination must be added by connecting pins 1 and 4 together with a short length of wire (see
12).
Connect the Power Interface module to this connector.
Pin Connection
1 TERM1
2 STACKBUS_N
3 +VSYS
4 TERM2
5 STACKBUS_P
6 COM
Document ID: NE-IG-001
Description
Input detector 2
Input detector 3
Table 11. Stack Bus: Molex MiniFit Jr Connector
Molex 39-01-2065
Manufacturer
Housing
Housing material
Circuits
Crimp terminal
Wire gauge range
Table 12. Stack Bus Connector Pin Assignment
Description
Termination Resistor; Short to Pin 4 to add
120Ω bus termination
Stack bus differential pair negative
+24V Power Supply
Termination Resistor; Short to Pin 1 to add
120Ω bus termination
Stack bus differential pair positive
Power return from SC
Nuvation Energy High-Voltage BMS - Installation Guide
Molex Incorporated
39-01-2065
Nylon UL94V-0
6
39-00-0181
AWG20-24 stranded
10
Connected to Device
External Equipment
External Equipment
Connected to Device
Stack Bus Connector
Power Interface
Power Interface
Stack Bus Connector
Power Interface
Power Interface
Rev 2.1, 2020-03-13
Table