Vertiv™ NetSure™ Control Unit (NCU) User Manual
• Set As (Not Used, General, Load, Battery, Source):
- Not Used: Indicates this shunt input is not used.
- General: Indicates the measurement of the shunt will be displayed and will not be added to Total DC Load or
Total Battery Load.
- Load: Indicates the measurement of the shunt will be displayed and added to the Total DC Load.
- Battery: Indicates the measurement of the shunt will be displayed and added to the Total Battery Load and
used with Battery Management.
- Source: Indicates the measurement of the shunt will be displayed as source current and will be added to other
sources. See also “When an EIB and/or SMDU Shunt is Set as Source” on page 117.
For SMDU+ Shunts:
• Set As (Enabled, Disabled):
- Enabled: Indicates this shunt input is used.
- Disabled: Indicates this shunt input is not used.
• Signal Full Name: Name displayed in the Web Interface menus.
• Signal Abbr Name: Name displayed in the local display menus.
• Full Scale Current: Enter the value of the shunt's full current rating.
• Full Scale Voltage: Enter the value of the shunt's full scale voltage (at rated current).
• Break Value: Enter the value desired as the reference for the high current alarms (typically the rating of the breakers
or fuses fed by the shunt, if applicable).
• High 1 Curr Limit Alarm: Enter the percentage value of the "Break Value" for alarm.
• High 1 Curr Alarm Severity: Alarm level for this alarm. (See also Table 1.1 on page 3.)
• High 1 Curr Alarm Relay: Select a relay number to map to this alarm.
“None” means there is no related relay number.
• High 2 Curr Limit Alarm: Enter the percentage value of the "Break Value" for alarm.
• High 2 Curr Alarm Severity: Alarm level for this alarm. (See also Table 1.1 on page 3.)
• High 2 Curr Alarm Relay: Select a relay number to map to this alarm.
“None” means there is no related relay number.
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