Vertiv™ NetSure™ Control Unit (NCU) User Manual
Figure 1.1 Interfacing with the NCU
1.3 Function Descriptions
1.3.1 Rectifier, Solar Converter, and Converter Control
The NCU controls rectifiers, solar converters, and converters automatically.
NOTE!
Solar Mode has to be enabled for NCU control of solar converters (see “Enabling Solar Mode” on page 38).
ALERT! The NCU can be equipped in a system that can either have +24V DC-DC converters installed or -58V DC-DC
converters installed. The system cannot have both types of converters installed at the same time.
1.3.2 System Components Monitoring and System Alarms Generation
The NCU monitors the components comprising the system (such as the rectifiers, solar converters, converters, and supervisory
modules) and generates alarms if a fault condition occurs. The NCU also maintains an alarm history log.
The available system alarms are programmed with an Alarm Severity Level. Each Alarm Severity Level has different visual/audible
alarm attributes. Available Alarm Severity Levels and their attributes are listed in Table 1.1.
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