The main computer, networking, and control electronics are contained in a watertight enclosure located on the WAM-V tray. The enclosure is designed to protect these components, allow easy installation and interface, as well as provide access for debugging as needed.

An SKB rackmount case was selected as the frame for the enclosure. These cases are IP67 rated, can be opened from both sides, and have standard half-rack hardware. The cases adequately meet requirements for component protection and accessibility. Modifications are needed to allow for easy installation and interfacing.

Rendered unmodified SKB R6S case

As the majority of networking and control hardware are inside this enclosure, a number of cables of various types must penetrate the case. While these cases are certainly safe to use when closed, if they are opened they (obviously) do not protect from water and dust. Cables must penetrate the closed case. Additionally, because this case should be “future proof” the method for penetration should allow for a wide range of cables and be relatively easily modified.

The proposed solution requires some modification of the stock lids to allow for interchangeable penetrator panels to be installed. The lids are cut to create flat portions suitable for sealing. A custom, lasercut gasket and panel are then installed. The panels can be redesigned and reinstalled to accommodate any reasonably sized panel-mount fitting.

Components in the enclosure must also be easily installed. For this purpose, two sliding racks were designed and installed to house certain specific components (for instance the main computer) as well as unknown future components. A standard M4 hole pattern was cut into the racks to encourage neat placement of future components.

The completed enclosure has successfully met its design goals. It is easily removed from (and installed on) the WAM-V tray, is easily transported, and (thus far) satisfactorily protects components.