Emerson ACC/ARTM-7221/FC, Installation Manual

Page: 30 / 54

ACC/ARTM-7221/FC Installation Guide (6806800E98A )
Installation Requirements
30
2.2.2.3 Environmental Requirements
The environmental conditions must be tested and proven in the used system configuration. The
conditions refer to the surrounding of the board within the user environment.
z
Operating temperatures refer to the temperature of the air circulating around the
RTM and not to the actual component temperature.
z
To ensure that the operating conditions are met, forced air cooling is required
within the chassis environment.
z
The environmental values given in the table below only apply to the RTM without
any hard disk. If installing hard disks, their environmental requirements must also
be taken into account. If you use the RTM together with a hard disk, also check the
environmental requirements of the hard disk and make sure that the most
restrictive requirements are met.
RTM damage
High humidity and condensation on the RTM surface causes short circuits.
Do not operate the RTM outside the specified environmental limits. Make sure the
RTM is completely dry and there is no moisture on any surface before applying power.
Do not operate the RTM below 0ºC.
Table 2-1 Environmental Requirements
Requirement Operating Non-Operating
Temperature +5ºC to +40ºC (normal
operation) according to
NEBS Standard GR-63-
CORE
-5ºC to +55ºC (exceptional
operation) according to
NEBS Standard GR-63-
CORE
All values may be further
limited by installed
accessories with more
restrictive environmental
requirements.
-40ºC to +70ºC (may be further limited by installed
accessories)
Temp. Change +/- 0.25ºC/min according to
NEBS Standard GR-63-
CORE +/- 0.25ºC/min
Rel. Humidity 5% to 95% non-condensing
according to Emerson-
internal environmental
requirements 5% to 95% non-condensing according to Emerson-
internal environmental requirements