Stack Bus - Nuvation Energy High-Voltage BMS Installation Manual

Pin Connection
1 PWR_A
2 PWR_B

5.3.4. Stack Bus

The Stack Bus connector provides power and communication to the Stack Controller module. The
Stack Bus provides 42 mA to the Stack Controller plus the summation of current consumed by all Cell
Interface modules in the system (up to 25 mA per Cell Interface - 12 channel or 31 mA per Cell
Interface - 16 channel). 120 Ω termination must be added by connecting pins 1 and 3 together with a
short length of wire.
Connect the Stack Controller to this connector.
Pin Connection
1 TERM1
2 STACKBUS_N
3 +VSYS
4 TERM2
5 STACKBUS_P
6 COM
Document ID: NE-IG-001
Table 29. External Power Connector Pin Assignment
Description
External Power Supply Input
External Power Supply Input
Table 30. Stack Bus: Molex MiniFit Jr Connector
Molex 39-01-2065
Manufacturer
Housing
Housing material
Circuits
Crimp terminal
Wire gauge range
Table 31. 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 Power Interface
Nuvation Energy High-Voltage BMS - Installation Guide
Molex Incorporated
39-01-2065
Nylon UL94V-0
6
39-00-0181
AWG18-24 stranded
33
Connected to Device
External Power Supply
External Power Supply
Connected to Device
Stack Bus Connector
Stack Controller
Stack Controller
Stack Bus Connector
Stack Controller
Stack Controller
Rev 2.1, 2020-03-13