H3C Technologies H3C S9500 Series Switches - Manual (Page 17)

Installation Manual
H3C S9500 Series Routing Switches
Chapter 1 Product Overview
1-11
1.2.5 Fan Tray
The S9502 uses eight DC fan units (70 × 70 × 25.4 mm or 2.8 × 2.8 × 1.0 in) in a fan tray
(36 W, and there is only one fan tray in the chassis). The fans operate on 12 VDC
supplied from the fan monitor board.
The S9505 uses four DC fan units (120 × 120 × 25.4 mm or 4.7 × 4.7 × 1.0 in) in a fan
tray (25 W).The fans can be governed in two modes: SRPU-controlled or
temperature-controlled. They operate on –48 VDC supplied from the backplane.
The fan subsystem of the S9508 and S9512 is the same as that of the S9505, except
that the S9508 uses six DC fan units in one fan tray (35 W) and the S9512 uses eight
DC fan units in two fan trays (25 W for each frame, four units in each).
Figure 1-10 Panel of the fan tray for the S9500 series
Table 1-5 LEDs on the faceplate of the fan tray
LED Color Status
OFF The fan tray is faulty.
RUN
Green The fan tray is running normally.
OFF The fan tray is running normally.
ALM
Red The fan tray is faulty.
1.2.6 SRPU Module
The SRPU module is the core of the switch, and mainly functions in