Vertiv Net Sure SM-DU+, Installation And User Manual

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Vertiv
| NetSure™ Site Monitoring Unit Installation & User Manual (UM10010507) | Rev. A
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INTRODUCTION
Overview
This assembly consists of an SM-DU+ enclosed in a sheet metal housing. This assembly is used in applications
where an SM-DU+ is mounted external to a power system equipped with an NCU controller. The SM-DU+
assembly is used to connect load shunts and fuse alarm signals to the NCU controller. The SM-DU+ assembly
provides twenty-five (25) load shunt monitoring inputs and fourteen (14) fuse alarm monitoring inputs.
The SM-DU+ assembly connects into the NCU CAN bus. Up to eight (8) SM-DU+ assemblies can be
connected to an NCU. Refer to
Figure 1 for an illustration of the SM-DU+ assembly.
Figure 1:
SM-DU+ Assembly
Technical Specifications
See Table 1 .
Table 1:
Technical Specifications
Item Description
Operating Voltage
Nominal: -48 VDC.
Input Voltage Range: -19 VDC to -60 VDC.
Operating
Temperature Range
Normal Operation Temperature Range: -10°C to +65°C.
Non Destructive Range: -40°C to +75°C.
Communication CAN Bus
Input Signals
Fourteen (14) Fuse Alarm (Bus- base of 0 VDC, >10 VDC alarm, <10 VDC normal).
Twenty-Five (25) Load Shunts (25 mV DC to 75 mV DC Shunt)
Dimensions See Figure 2 .
SM-DU+ Assembly