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OPERATION
The SM-DU+ assembly monitors load shunt inputs and fuse alarm inputs and reports this data to the NCU
controller.
Indicators
There is one (1) status and alarm indicator located on the SM-DU+ circuit card. The function of this indicator is
as shown in Table 4. Refer to Figure 8 for location.
Table 4:
SM-DU+ Circuit Card Indicator
Indicator
Operation
(Green)
Figure 8:
SM-DU+ Circuit Card Indicator Location
Green Indicator
Configuring the NCU SM-DU+ Parameters
Refer to the NCU controller manual (UM1M830BNA) for detailed instructions on how to program the monitored
inputs to the SM-DU+ assembly.
Vertiv
| NetSure™ Site Monitoring Unit Installation & User Manual (UM10010507) | Rev. A
Normal State
Fault State
Off
On
Flashing
Fault Cause
SM-DU+ is non-operational.
A 1/3Hz flashing indicates the
SM-DU+ is being identified by the
Controller.
A 1Hz flashing indicates a
communication failure.
17
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