3Com 6000 Series Installation Manual page 17

Table 8 PWR LED description
LED
ALM (red)
RUN (green)
AC OK (red)
FAN The 6040 is configured with six fans, separated into three groups. The 6080 is
configured with eight fans, separated into four groups. The two fans in a group
work in a redundant manner. When all these fans are working normally, the
operating temperature of the system can be maintained in the range of 0 to 55 C.
Failure of a fan will not affect the operation of other fans, the system will still be
able to operate in the normal temperature. The rotating speed of the fans is
controlled by the RPU and is in the range of 50% to 100%.
The FAN controller uses two parameters, i.e., low-temperature threshold and
high-temperature threshold to control the rotation speed of the fans, with the
former corresponding to 100% rotating speed and the latter corresponding to
50% rotating speed. The system will send out rotation stop alarm signals in case
any fan fails. The alarm and state LEDs of FAN are located on the RPU front panel.
Figure 8 Fan Location (6080)
Introduction to General Modules
Description
PWR failure LED. ON means PWR is not in
place or has failed.
PWR operation LED. Constant ON means
PWR is operating normally, and OFF means
PWR has failed.
PWR input LED. Constant ON means the
normal voltage (85 ~ 264V) is inputting, and
OFF means the voltage input is not normal.
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