ZyXEL Communications IES4005M, User Manual

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Chapter 6 Fan Module
IES4005M User’s Guide
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6.3 Deployments
The chassis has a hot-swappable fan module. The fan module is at the left on the front panel.
Replace the entire fan module if cleaning the fan filter does not solve the problem. Return any
malfunctioning fan modules to the manufacturer.
6.4 LED Indicators
Removing the fan module or fan RPMs, temperature, or voltage values outside of the accepted
threshold triggers a critical alarm and turns on the management card’s Alarm LED.
6.5 Speed Control
The IES automatically adjusts the rotation speed of the fans based on the detected temperature.
You can also manually set the high and low fan speed limits for raising an alarm on a specific fan.
6.5.1 Automatic Adjustment
The following table covers how the IES automatically adjusts the rotation speed of the fans based
on the detected temperature.
Note: Fan rotating speed is just a reference. Actual values depend on test environment.
Table 30
Fan Speed Control
TEMPERATURE (C) DUTY-HEX (%) FAN ROTATION SPEED (RPM)
Under 65 0xa (3.9%) Fan 1 2000
Fan 2 2500
Fan 3 2000
65~69 0x18 (9.375%) Fan 1 4500
Fan 2 4000
Fan 3 4500
70~74 0x20 (12.5%) Fan 1 5000
Fan 2 4500
Fan 3 5000
75~84 0x40 (25%) Fan 1 6000
Fan 2 5000
Fan 3 6000
Above 85 0xff (100%) Fan 1 6800
Fan 2 5400
Fan 3 6800