Furuno RS-600-ASAA warranty Automatic Fan Speed Control, Dba, Load

User’s Manual / English

6. Automatic Fan Speed Control

Exact CFM requirements vary by application and end-use environment, but 60-70 CFM is typical for the 120mm fan itself. For noise-sensitive applications, it is recommended that a thermally sensitive fan speed control circuit be used to balance system-level thermal and acoustic performance. This circuit typically senses the temperature of an internal heat sink and/or incoming ambient air and adjusts the fan speed as necessary to keep power supply and system component temperatures within specifications. Please refer to the fan speed control drawing below.

dBA	RPM
28	2300
24	1800
20	1300
16	800
12
8
4

Load

10% 20%30%40% 50% 60% 70%80%90%100%

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