Vertiv | +24 VDC Power System User Manual (Section 6013) | Rev. G
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Meter-Control-Alarm (MCA) Assembly
The system contains one MCA. The MCA controls the operation of the Rectifier Modules (PCUs). The
MCA also provides power system control, metering, monitoring, and alarm functions.
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The system contains one or more Module Mounting Shelf Assemblies, each of which houses Rectifier
Modules (PCUs) and optional DC-DC Converter Modules.
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The system contains Rectifier Modules (PCUs), which provide load power, battery float current, and
battery recharge current during normal operating conditions.
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Optional DC-DC Converter Modules
Where –48VDC load power is also required, DC-DC Converter Modules are available.
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