Artesyn Centellis 2000 Shelf - DC Installation and Use (June 2014) - Manual (Page 121)

Chapter 7
Centellis 2000 Shelf - DC Installation and Use (6806800G45F) 121
Power Subsystem
7.1 Overview
This section contains information on power supplies and power distribution.
7.2 Power Subsystem
In this section you can find information on the power supplies, the power distribution, as well
as the PEM specifications.
7.2.1 Power Supply
Up to two field-replaceable PEMs are installed in the middle of the shelf’s front. Each PEM
routes one DC feed from a power inlet on the rear to the backplane.
At the minimum operating voltage (40 V), this power entry supports 1000 W.
Important features of the PEMs are:
 Redundancy such that a single PEM failure will still provide full power to the system
 Hot-swap
 Power filtering
The PEM supports the complete functionality as defined by the PICMG 3.0 specification.
7.2.2 Power Distribution
The shelf has two different power distribution systems. The first is a management power
system (3.4V DC) that provides power to IPMCs on shelf FRUs (fan trays and user cards) and to
the ATCA-MF105 hubs. The second is a high power system (-48V DC) that provides power to all
blades, fans trays, shelf managers and user cards.