Owners manual

Operation
19 Emerson
®
MPH2
™
3.0 OPERATION
Emerson’s MPH2 rack PDU may be monitored and managed by the factory-installed RPC2 communi-
cations module. This manual presents information about the MPH2’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. The document shipped with the MPH2 rack PDU and is available at Liebert’s
Web site, http://www.emersonnetworkpower.com
The MPH2’s onboard LCD and the Web-based interface display system operating measurements, as
well as readings from optional Liebert SN temperature or temperature/humidity sensors. The RPC2
communications module and onboard LCD also display basic information about the MPH2 rack PDU,
such as firmware version, unit rating, model number and serial number.
LED’s on the MPH2 and an audible alarm also assist in monitoring performance with alerts about
events and alarm conditions. The keys under the onboard LCD are used to navigate to various
information and to silence alarms.
3.1 Controls and Indicators
The MPH2 rack PDU also has LED’s that indicate outlet and branch status and system information.
LED’s flash, pulse or change colors to indicate an event or alarm condition (for details on how LED’s
respond to events and alarms, refer to 5.0 - Troubleshooting.
NOTE
Units with a “B” as the fourth character in the model name (MPHBxxxx) do not have LED’s at
their outlets. The branch and outlet LED behavior in 5.0 - Troubleshooting and elsewhere in
this document does not apply to these units.
Outlets on units with an “M” as the fourth character in the model name (MPHMxxxx) cannot be
turned Off. LED’s at outlets on these models are always either on continuously or flashing
when input power is present.