Performance Motion Devices CME N Series, User Manual

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ION/CME N-Series Digital Drive Developer Kit User Manual 55
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The next few sections will provide detailed instructions for assembling a complete DK stack from the components
listed above. For additional information on mechanical mounting of the N-Series ION unit refer to
Section 3.7,
“Mechanical Mounting.” For additional information on DK P/Ns and contents refer to Section 3.2, “Developer Kit
Hardware Contents.”
3.5.2 Assembly Sequence
Attaching the thermal pad to the N-Series ION
The first step of the assembly procedure is to insure that there is good thermal contact between the N-Series ION
and the base plate heat sink. For this purpose, a thermal pad will be attached to the ION’s metallic heat sink interface.
Figure 3-2:
Mounting
Thermal Pad to
N-Series ION
To accomplish this, locate the thermal pad in the developer kit box. Next, carefully remove the thin plastic protective
sheets on either side of the thermal pad and mount onto the ION unit, carefully aligning the pad with the ION unit’s
metallic backing and applying finger pressure to adhere the pads to the metal.
After adherence to the ION’s metallic backing the thermal pad should appear flat and without bubbles or bulges. Once
pressed in place the pad should stay in place but if required the pad can be removed and remounted.
Mounting the N-Series ION to the base plate
The next step of the assembly process is to mount the N-Series ION with thermal pad attached to the rectangular
base plate. Four M2.5 screws and the Allen key are used for this purpose as shown in
Figure 3-1 . Make sure to orient
the base plate so that the rubber feet are away from the ION unit.
When tightening the screws use only modest torquing force, and alternate tightening in an X pattern so that the applied
force is increased slowly and equally amongst the four screws. Should you hear or see a snap of the ION unit tab while
tightening a screw this means the ION unit’s protective fuse tab has engaged because too much torque was applied.
If this occurs the N-Series ION unit can not be used. It must be de-installed and discarded, and a new unit installed.
The N-Series ION contains electronic components and is therefore subject to damage from ESD (Electro Static
Discharge). Therefore, during the assembly procedures described below and at all other times while handling the
ION unit the operator should apply measures to reduce the potential for ESD damage which include use of
grounding straps, anti-static mats, environmental controls, and other measures.
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