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Centralized Architecture (Continued)
Remote Voltage Sense and System Shunt for Millennium II Controller when in a
Cabinet with BIC11 Bay Board
These procedures convert the Millennium II Controller to external battery sense (voltage sense at the
central charge and discharge buses) and a single system shunt for load current, when used in a Cabinet
with a BIC11 Bay Board.
Refer to Figure 6 - 4 for these procedures.
Remote Voltage Sense for Millennium II Controller with BIC11 Bay
Step Action
Run new wires from the central bus bars. Connect to the BIC11 TB2-10T (RB) and TB2-9T (RG).
Note: If central bus bars have LVBD, sense leads must be on the rectifier side of the contactor.
Move the VSns Jumpers at J20 (Bat Sns) & J21 (DG Sns) from LCL to RMT.
System Shunt for Millennium II with BIC11 Bay Board
Step Action
Run new wires (installer-provided) from the system shunt to the BIC11 TB2-8T (SH+) and TB2-3B (SH-). Limit the
resistance of this wiring to 1 ohm maximum.
Typically, this may be accomplished with 22 AWG conductors 25 ft long (1-way) or 20 AWG conductors 45 ft long (1-
way). If the cabling distance to the shunt exceeds these lengths, then 14 AWG conductors may be used. DO NOT use
any CLRs (Current Limiting Resistors) in this circuit.
Note: For -48V systems, the SH- connection is to the load side of the shunt (if it is in the return path), and the SH+
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