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Chapter 2
Installing the Cisco ONS 15540 ESPx
Powering Up the Shelf
Figure 2-20 Unlocking the Drawer
Power up the system and verify fan assembly operation by checking the fan
Step 17
assembly status. The fan status is normal when operating properly.
Powering Up the Shelf
The system is powered by redundant -48 VDC inputs. Two models
(15540-PWR-AC and 15540-ACPS-N-E) of redundant external AC-input power
supplies are available or DC-input power can be provided directly.
The external power supplies are single-phase, AC-DC, 1050 W, -48 V output
power supplies. The external power supplies are installed in an external power
shelf that fits into a standard equipment rack. The following note and warnings
apply to direct DC-connected installations.
The DC return is to remain isolated from the system frame and chassis (DC-I
Note
Cisco ONS 15540 ESPx Hardware Installation Guide
2-40
78-16436-01
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