Table 3-2 Critical Temperature Limits - Emerson AXP1620 Installation And Use Manual

Site Preparation
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Table 3-1 Environmental Conditions (continued)
Feature Operating
Vibration 0.1g from 5 Hz to 100 Hz and back to 5 Hz at
(tested in a rate of 0.1 octave/minute
target
platform)
Free fall -
Noise ETSI ETS 300 753 (October 1997)
Telecommunication equipment rooms
(attended): 7.2 bel
Measurement of "declared A-weight sound
power level"
All values are applicable to normal operating
conditions (~23°C).
NEBS GR-63-CORE, Issue 3
Telecommunication equipment rooms
(attended): 78 dB
Measurement of "declared A-weight sound
power level"
All values are applicable to normal operating
conditions (~27°C).
The ambient temperature around the shelf and the air inlet temperature must not
exceed 55°C (131°F).
The AXP1620 system regulates the fan speed based on the temperature sensors
present in the system. The fan speed is adjusted to the lowest speed which still
keeps the evaluated temperature readings below or at their respective "upper non-
critical threshold". Hence, the fan speed depends on the ambient temperature,
blade design, temperature threshold settings, and system configuration.
To guarantee proper blade operation, you have to make sure that the temperatures at the
locations specified in the following are not exceeded. If not stated otherwise, the temperatures
should be measured by placing a sensor exactly at the given locations.

Table 3-2 Critical Temperature Limits

Component
Air inlet (system's front)
Air outlet (system's rear)
Non-Operating (packed state)
2
5-20 Hz at 0.01 g
20-200 Hz at -3.0 dB/octave
Random 5-20 Hz at 1m
Random 20-200 Hz at -3 dB/octave
300mm (11.8 in) (packaged)
25mm (1 in) (unpackaged) per GR-63-
CORE
fully populated system
-
Temperature Limit
55°C (131 °F)
70°C (158 °F)
AXP1620 Installation and Use (6806800E23E)
Requirements
/Hz
2 3
/s