u The fan unit is configured with a fan monitoring board, which can detect the
working status of fans. The monitoring board provides interfaces for
communication with the core switch card of the equipment, and sends the
monitoring information to the core switch card regularly.
u The fan unit provides seven speed choices (1 to 7, from the lowest to the
highest). The fan speed can be regulated in manual mode or intelligent mode.
4 In manual mode, the fan unit operates at the speed set on the EMS.
4 In intelligent mode, the core switch card of the equipment automatically
selects a speed for the fan unit according to the card temperature detected,
and the fan unit operates at the selected speed.
Indicator LEDs
Identifier
Meaning
Color Status
Description
ACT
Working indicator
LED
Green
ON
The fan unit is powered on.
OFF
The fan unit is not powered on
as expected.
ALM
Alarm indicator
LED
Red
ON
The fan unit is faulty.
Blinking
The fan has its speed
regulated automatically.
Version: B
15
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