NetSure
™
-48V DC Power System
Quick Start Guide, QS582127000 (Issue AC, December 10, 2013)
Spec. No: 582127000
Code: QS582127000
Model No: 721
NPBB
Issue AC, December 10, 2013
[38]
Optional SM-DU+ and Shunt Interface Board
The optional SM-DU+ and Shunt Interface Board provides connections for up to twenty-five (25) shunt inputs. Inputs are factory
connected to any distribution positions/devices containing shunts. Refer to
PROCEDURE
Current Inputs: Connect up to twenty-five (25) shunt inputs to the Shunt Interface Board. Observe proper polarity. Note that some
inputs may be factory connected, depending on distribution devices installed. Refer to the ACU+ Instructions (UM1M820BNA or
UM1M820DNA400) for programming information for the unused inputs.
Note:
The shunt needs to be installed in the hot (-48V) bus. Connect the plus side of the shunt to the positive shunt input on the SM-DU+.
Connect the negative side of the shunt to the negative shunt input on the SM-DU+.