The R4U-20A sets new standards for ultra rugged COTS Plus rackmount computer systems. The rackmount system is designed for high shock / high vibration environments such as vehicular mount, aircraft mount or transit case installation. The short depth of 20 inches allows it to fit virtually all transit cases. The rugged construction will assure its reliable operation in that environment.
A key feature to support operation in adverse shock and vibration environments is the entire interior front sub-panel with the drives is shock mounted. This is the optimum way to protect drives versus shock mounting individual drives. See
our Shock and Vibration white paper for details.
Primary construction is from high strength .090 5052 aluminum alloy. The front panel is milled from a single piece of .250 inch aluminum. A door covers the drives and air inlet. The front panel provides an embedded EMI/environmental gasket and multiple captive fasteners on the door to secure the system from contamination. The lid is secured with a number of captive screws and is provided with an EMI/environmental gasket. The overall effect is a very robust enclosure to protect the system in any foreseeable environment.
Superior cooling is provided by two high volume 92mm aluminum frame fans providing 60CFM each of high pressure air flow. The fans are Sanyo-Denki High Reliability models with 100K hour MTBF. The front door is provided with an easily serviced air filter with various classes available. A chassis over- temperature alarm and fan failure circuit monitors chassis conditions. Higher velocity fans are optionally available.
The system is provided with two externally accessible 5-1/4" drive bays and two internal 3-1/2" hard drives. All drives are mounted on heavy duty shock mounts to protect the components in high shock / high vibration environments such as vehicular or aircraft installation. A variety of removable drive bays are available to allow quick access to the front mounted drives.
System controls are mounted behind the front door and include power control, system reset, and alarm reset. Mounted in the front panel is the Power-on LED, Fan Failure and Overtemp LEDs. The internal controls are mounted on an easily accessible PCB and overlay providing for simple customization.
The R4U-20A is optimized for installation of an ATX motherboard. This configuration fits the mission requirements for a lower cost solution and performance options. Systems are available with long life motherboards for assured system consistency over multi-year programs. A hold-down bar provides for securing the cards for any adverse shock and vibration environment.
A standard 4U PS/2 style power supply can be mounted including redundant supplies and DC input. A Mil Std 704 or 1275 compliant supply is available for military airborne or ground installations.
The chassis provides a rear mounted ground stud and low smoke / zero halogen wiring is available for military compliance. All fasteners are either self locking or are secured with Loc-Tite during assembly.
19" (wide)
x 4U (6.95") (high) x 20.0" (deep)
Weight - 30-35lbs typical configured system
Rugged all aluminum construction:
.090" 5052-H32 chassis and components
.250" 5052-H32 milled front panel
Formed and welded front door w/ filter
Mil-C-5541E Class 3 chem film protection
Lid secured with captive screws
EMI/Environmental gasket behind front door and under lid
Built to survive high shock and vibration environments:
Shock isolated front sub panel
Multiple mounting points for motherboard and CPU heat sinks
Card hold down
Self locking fasteners or Locktite when appropriate
All cables securely dressed and tied down
Drive Capacity
Two horizontal 5-1/4 inch half height
drives - front accessible
Multiple options for hot swap drives
Two internal 3-1/2 inch hard drives
Drives mounted on heavy duty shock mounted unibody drive cage
Provision for 2-1/2 inch and SSHDD drive mounting
Front Panel Controls
Power
switch
System Reset switch
Alarm Reset switch
Power LED
Hard Drive Access LED
Fan Failure LED
Chassis Overtemp LED
Switches mounted behind filter door
Rear Panel Details
7 I/O card slots
10-32 ground stud
PS/2 or Redundant power supply opening
Air vents for mounting 2 optional 60mm fans
Cooling
Two 92mm 60CFM fans Sanyo-Denki Long Life 100K hr MTBF
Positive chassis pressure
30PPI filter installed
Fan Options: thermister regulated fan speed,
3-wire tach signal, higher or lower flow rates
Power Supply
PS/2 Style supply - not provided
Options for single supply, redundant N+1, DC input, 400Hz input
Mil-Spec 704/1275 supplies available as required. Inquire with your Sales Engineer
Motherboard Mounting
ATX (9.6 x 12") motherboard
Supports 7 plug-in cards
Rack Slides
See Rack Slides
for an offering of available slides.
Chassis Plans is more than a chassis
supplier. Our primary business is providing long life span fully integrated turnkey systems tailored exactly to customer specification. We are experts at multi-vendor integration and offer a complete product
line including the latest long-life motherboards,
drives, video boards and plug-in cards
including analog/digital I/O cards.
Integrating today's complex systems
can be a challenge. Allow us to provide
you with a professionally integrated
system with the OS loaded and the system
tested and burned-in as a complete unit.
We stand behind our work 100%.
