PACIFIC SCIENTIFIC 6410-024-N-N-N
For optimal thermal performance and minimum panel usage,
mount the 6410 bookcase style to a cooling plate (typically an
Aluminum plate or heatsink with enough thickness and surface
area to maintain the 6410’s chassis below 60°C ) using two M4 or
6-32 screws inserted through the mounting slots on the back of the
unit. Use a thermal pad or grease if surface is irregular. The
maximum temperature of the 6410’s back plate must be held
below 60°C. The graph of 6410 power dissipation vs. current
setting shown below may be used to design the cooling plate or
direct measurements can be taken during normal operations and
adjustments made to plate area or airflow over the plate if
necessary. Make sure that any difference between the ambient
temperature during the measurement and worst case ambient
temperature is accounted for. The 6410 can also be mounted with
its side against the cooling plate using 4 M4 or 6-32 screws if
mounting depth is of greater concern than panel area. The same
thermal considerations apply as for back mounting.
If a cooling plate is not provided, the optional heatsink available
from Pacific Scientific can be mounted to the side of the 6410 and
the combined unit mounted to a panel using the slots on the back
of the 6410 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 6410 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 6410’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
mounting
If the 6410 is mounted to a panel with no cooling plate and no
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 6410 will
increase the allowable current. The same considerations given
above for the optional heatsink apply.
