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Heatsink
If a cooling plate is not provided, the optional heatsink available
mounting
from Pacific Scientific can be mounted to the side of the 6415 and
the combined unit mounted to a panel using the slots on the back
of the 6415 as described above (bookcase mounting). With a
minimum unobstructed space of four inches above and below the
unit, and cooling accomplished solely through convection (no fan),
the 6415 can be run at 5 Amps RMS maximum for ambient
temperatures of 25°C or less and 2.5 Amps RMS maximum for
ambient temperatures of 45°C or less. Using a fan to blow air past
the heatsink will increase the allowable current significantly. It is
always required that the 6415's chassis temperature not exceed
60°C. It is best to confirm this by direct measurement with a
temperature probe during system operation. Any difference
between the ambient temperature during the measurement and the
worst case should be added to the measured chassis temperature.
The resulting sum must be under 60°C.
Panel
If the 6415 is mounted to a panel with no cooling plate and no
mounting
heat sink, a minimum unobstructed space of four inches above and
below and one inch between the side plate and any other object
must be provided. If cooling is accomplished solely through
convection air flow (no fan), the unit can be run at 2.5 Amps RMS
maximum if the ambient temperature is 25°C or less and 1.25
Amps RMS maximum if the ambient temperature is 45°C or less.
Again, use of a fan to blow air past the side plate of the 6415 will
increase the allowable current. The same considerations given
above for the optional heatsink apply.
6415 Installation and Hardware Reference Manual - Rev E
2 - 5
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