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Installing an AC PSM
The combination of one AC PSM (AC-to-DC power converter) and one AC PEM can support the
full system current requirements if you are operating the ESS-7 without power redundancy. For
AC power redundancy, two AC PSMs and two AC PEMs must be installed and powered on at all
times.
There are two front and two rear power bays in the ESS-7 chassis. The AC PSMs are installed in
the front power slots 1 and 2
respective rear power slots 1 and 2, directly behind the PSM. For example, the AC PSM installed
in the front power slot 1 corresponds to the AC PSM installed in the rear power slot 1 and the AC
PSM installed in the front power slot 2 corresponds to the AC PEM installed in the rear power slot
2.
Table 24
5
3
5
7450 ESS-7
(Figure
describes the chassis and power module features depicted in
1
1
1
2
Figure 21: AC PEM and AC PSM Installation
21). They correspond to the AC PEMs installed in the
Chassis Top View
2
2
Installing Power Modules
Figure 21
6
1
2
6
SR70038A
and
Figure
22.
4
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