User's Manual

TRM-300 / Integration guide
F070033PT_5.1_en
Page 12 of 26
en
8.2 MOUNTING WITH HEATSINK
This mounting is required in case of applications with multislot data service, in order to optimize the thermal
dissipation. The Programming Kit accessory is needed in order to configure the Terminal to maximize the
data capacity of the channel. Pick Mounting with heatsink at the Options -> Configuration screen.
The TRM-300 chassis is supported on a heatsink with a thermal interface material between them.
The height of the spacers must be chosen according to the thermal interface material thickness.
The thermal interface material must have a thermal resistance less than 0.75ºC/W (inch
2
).
- The heatsink contact area must be perfectly flat. A flat contact area allows you to use a thinner layer
of thermal interface material, which will reduce its thermal resistance.
- The pressure on the thermal interface material must be high (such as 30KPa), while still being
reasonably easy to install.
The heatsink must have a thermal resistance less than 1.5ºC/W and include a label with the text:
“Warning – Hot surface – Do not touch” or an equivalent safety symbol.
In the case a fan is used, ensure the proper flow of air inside the mechanical enclosure.
PowerTrunk recommends its Thermal Dissipator Kit accessory.
Place the TRM-300 so that the labels are visible.
Remove the protective tape of the thermal interface
material.
Ensure the instructions of the section 8.3 are carried out,
regarding this hole specifically. Apply a 44cN·m torque.
In the other three holes, fix the TRM-300 to the spacers
with screws (11mm -0.43 inches- length) and washers.
Apply a 44cN·m torque.
Screw the four thick spacers to the heatsink.
Fix the four thick spacers with screws to a flat surface, in
which four holes have been drilled according to the file
D288W21NX_SP02.