NE40E
Hardware Description
When the system is fully configured, temperatures reported by the temperature sensors on the
LPUs, SFUs, and MPUs serve as the basis for fan speed adjustment. Table 1-115 lists general
principles.
Table 1-115 Fan Speed Adjustment Principles
Ambient
Temperat
ure
-5° C -
+27° C
(23° F -
80.6° F)
27° C -
40° C
(80.6° F -
104° F)
Over 40° C
(104° F)
1.9.5.3 Fan Module
The fan modules, each containing one fan, are located side by side at the air exhaust vent. If a
single fan fails, the system can still work normally at an ambient temperature of 40° C (104° F)
for a short period of time.
Overview
Table 1-116 Fan attributes
Attribute
Description
BOM
Model
Table 1-117 Mapping products and versions
Product
X8
X16
Issue 01 (2018-05-03)
Rotational
Noise and Dissipation Standards
Speed
Low speed (50%)
When fans rotate at a constantly low speed and the fans
meet heat dissipation requirements of a fully configured
system.
The fan speed is adjusted smoothly in linear mode,
Linear variation
without a sharp increase in noises.
High speed
Fans rotate at high speed to meet heat dissipation
(100%)
requirements.
Description
Fan Box
02120562
CR5M000FBX60
Earliest Software Version
V800R006C20
V800R006C20
1 Hardware Description
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