Fan Speed And Power Requirements; Figure 13-39 Position Of The Ons 15454 Etsi Fan-Tray Assembly - Cisco ONS 15454 DWDM Installation And Operation Manual

Chapter 13 Shelf Hardware Reference

13.11.1 Fan Speed and Power Requirements

The 15454-FTA3 is not I-temp compliant. To obtain an I-temp fan tray, install the 15454-FTA3-T
Note
fan-tray assembly in an ONS 15454 Release 3.1 shelf assembly (15454-SA-ANSI or 15454-SA-HD).
However, do not install the ONS 15454 SONET XC10G cross-connect cards with the 15454-FTA2
fan-tray assembly.
See Figure 13-39 for the position of the ONS 15454 ETSI fan-tray assembly.

Figure 13-39 Position of the ONS 15454 ETSI Fan-Tray Assembly

F A N
F A IL
C R
IT
M A
J
M IN
LCD Fan tray
assembly
13.11.1 Fan Speed and Power Requirements
Fan speed is controlled by the TCC2 card's temperature sensors. The sensors measure the input air
temperature at the fan-tray assembly. Fan speed options are low, medium, and high. If the TCC2 card
fails, the fans automatically shift to high speed. The temperature measured by the TCC2 sensors appears
on the LCD screen.
Table 13-8 lists power requirements for the fan-tray assembly.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
13-42
September 2004