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6U Mechanical Housing Assembly (MHA)
 

PDF print version of this specification

The Air-Cooled Mechanical Housing Assembly (MHA) is a versatile, rugged enclosure for embedded systems, as used in varied Naval, Military and Industrial applications and has extensive I/O capability and options.

The MHA can be configured for use with a wide range of standard or custom backplanes.

The MHA has dual-redundant hot-swappable power supplies, connected in a load-sharing topology, capable of operating from a wide AC input range and supplying standard DC output rails. On-board power line filtering is implemented to limit susceptibility to EMI and RFI.

The modular rear-I/O connector plate can easily be customised to suite any end application. Resilience to shock and vibration is ensured by the MHAs external shock isolation mounts, which operate in conjunction with the inner cages own shock isolation mounts.

The MHA supports many further optional features, including a 305 mm (12") TFT LCD Touchscreen, located on the front access panel.

Features

  • Support for various 3U and 6U backplanes (CompactPCI, VME, VPX, custom, etc.)

  • Four CompactPCI or VME card slots in the standard configuration (expandable)

  • Rugged, stainless steel plate construction

  • Dual-redundant power supplies

  • External and internal mechanical shock isolation

  • Forced-air or chilled water cooling

  • Front-panel hour meter, power and battleshort switches, USB connector and CO2 injection point

  • Optional 305 mm (12") TFT LCD touchscreen

Mechanical Housing Assembly

Mechanical Housing Assembly

 

Specifications

Mechanical Construction

3CR12 stainless steel plate (2,5 mm) construction
CNC laser cut parts
All stainless steel nuts, bolts and screws
Removable lifting eyes
Freestanding (with or without shockmounts) and 19" rackmount options

Card Area

Shock isolated inner card cage
3U : vertical card orientation, up to eight slots
6U : horizontal card orientation, up to four slots
Air-cooled cards
Lockable front access panel

Thermal Management

Forced air cooling via filtered side panel air vents
Optional intercooler for chilled water cooling

Backplane Type

Various standard 3U or 6U options (CompactPCI, VME, VPX, etc.)
Custom 3U or 6U backplanes

Power Supply

Dual-redundant power supplies (application specific rating)
EMI/RFI power line filtering

I/O Interface

Fully customisable rear I/O area
Rear I/O plate angled for cable strain relief

Switches and Indicators

Standard front panel switches and indicators :

  • Power and battleshort switches
  • Running hour meter
  • General purpose multi-pin circular I/O connector (USB or serial I/O)

Surface Finish

Powder coat painted

Physical
- 6U Dimensions (W x H x D)
- 6U Dimensions (W x H x D)
- 3U Mass
- 3U Mass


450 mm x 310 mm x 565 mm (excluding shockmounts and lifting eyes)
450 mm x 270 mm x 565 mm (excluding shockmounts and lifting eyes)
27 kg 0,5 kg (excluding options)
25 kg 0,5 kg (excluding options)

IP Rating

IP-54 (IEC-60529)

Acoustic Noise

< 55 dBA at 1 m

MTTR

< 1 hour onboard

 

Environmental Specifications

 

Commercial Grade

Industrial Grade

Ruggedised Grade

Temperature
- Operating
- Storage


   0 C to +55 C
-40 C to +85 C


-15 C to +75 C
-50 C to +85 C


-40 C to +85 C
-60 C to +125 C

Humidity

0% to 90%

0% to 95%

Shock

N/A

25 g for 5 ms, sine (operational)
30 g for 10 ms, sine (non-operational)

Vibration

N/A

i.a.w. DEF-STAN 07-55 (Part 2), Section 1/1, Annex A, Figure 4

EMC

i.a.w. MIL-STD-461C (Table 5 for Class A4 equipment installed on surface ships)

 

 Part Designations

Part Number

Grade

Backplane Size

CCII/MHA/AC/6U/xxx/COM

Commercial

6U

CCII/MHA/AC/6U/xxx/IND

Industrial

6U

CCII/MHA/AC/6U/xxx/RUG

Ruggedised

6U

CCII/MHA/AC/3U/xxx/COM

Commercial

3U

CCII/MHA/AC/3U/xxx/IND

Industrial

3U

CCII/MHA/AC/3U/xxx/RUG

Ruggedised

3U

Note : The three digit code (xxx) in the part number denotes customer specific backplane options.

 


MHA  Rev2.1 2015-07-31
CCII Systems (Pty) Ltd P.O. Box 171 Rondebosch 7701  South Africa 
Telephone : (+27 21) 683 5490 Facsimile : (+27 21) 683 5435 WWW : www.ccii.co.za