Cisco ONS 15454 DWDM - Fan-Tray Assembly

15-42
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
September 2005
Chapter 15 Shelf Hardware Reference
15.12.1 Fan Speed and Power Requirements
Figure 15-40 Position of the ONS 15454 ETSI Fan-Tray Assembly
15.12.1 Fan Speed and Power Requirements
Fan speed is controlled by the TCC2/TCC2P 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/TCC2P card fails, the fans automatically shift to high speed. The temperature measured by the
TCC2/TCC2P sensors appears on the LCD screen.
Table 15-12 lists power requirements for the fan-tray assembly.
61236
F
A
N
F
A
IL
C
R
IT
M
A
J
M
IN
Fan tray
assembly
LCD
Table 15-12 Fan Tray Assembly Power Requirements
Fan Tray Assembly Watts Amps BTU/Hr
FTA2
53 1.21 198
FTA3 -T
86.4 1.8 295