Artesyn Centellis 4100 Installation and Use (2015) - Manual (Page 184)

Configuring and Operating the System
Centellis 4100 Installation and Use (6806800D82E) 186
6.5 Power Subsystem
In this section you can find information on the power supplies, the power distribution, as well
as the PEM specifications.
6.5.1 Power Supply
Four field-maintainable intelligent PEMs are installed beneath the rear slots of the backplane.
The PEMs A1 and B1 supply the odd numbered slots, the blowers and shelf manager boards,
the PEMs A2 and B2 the even numbered slots.
At the minimum operating voltage (40V), this power entry supports 4000W.
Important features of the PEMs are:
 Redundancy such that a single PEM failure will still provide full power to the system
 Hot-swap
At a minimum, one of PEMs A1 or B1, and one of PEMS A2 or B2 must be connected in order to
have sufficient power for the blades.
Figure 6-6 Power Entry Modules Location