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4 OPERATION
Vertiv™'s MPH2™ Rack PDU may be monitored and managed by the factory-installed RPC2
communications module. This manual presents information about the MPH2™ Rack PDU's functions and
features. Refer to the RPC2 user manual, SL-20841, for details on using the RPC2 communications module
to monitor and manage the MPH2™ Rack PDU. The documents shipped with the MPH2™ Rack PDU are
available at Vertiv™'s Web site,
The rack PDU's on-board LCD and the web-based interface display system are used to view
measurements, metering information and data from optional Liebert SN temperature or
temperature/humidity sensors. The RPC2 communications module and on-board LCD also display basic
information about the MPH2™ Rack PDU, such as firmware version, unit rating, model number and serial
number.
LEDs on the MPH2™ Rack PDU and an audible alarm also assist in providing alerts about events and alarm
conditions. The keys under the on-board LCD are used to navigate to various information and to silence
alarms.
4.1 Controls and Indicators
The MPH2™ Rack PDU also has LEDs that indicate receptacle and branch status and system information.
LEDs flash, pulse or change colors to indicate an event or alarm condition.
NOTE: Units with a "B" as the fourth character in the model name (MPHBxxxx) do not have LEDs at
their receptacles. The branch and receptacle LED behavior described in on page 41 and elsewhere in
this document does not apply to these units. Receptacles on units with an "M" as the fourth character
in the model name (MPHMxxxx) cannot be turned Off. LEDs at receptacles on these models are always
either on continuously or flashing when input power is present.
Figure 4.1 On-board LCD and control keys
NUMBER
1
2
3
Vertiv | Vertiv™ MPH2 Rack PDU Installer/User Guide
www.VertivCo.com.
DESCRIPTION
On-board LCD
Line-input-status LEDs
Right-arrow key
25
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