Sealed, 0.8" pitch, high performance dry-air 6U chassis incorporates four heat exchangers and air re-circulation fans inside. This minimum maintenance ATR is ideal for applications where ambient air is laden with hostile or harmful contaminants.
Heat generated within the enclosure is conducted to the hollow sidewalls, top cover & rear panel heat exchanger where it is dissipated to the ambient environment by forced air rear fans or by vehicle platform air plenum. Internal air recirculation fans ensure constant airflow across modules.
The 6U HES chassis is available in 5, 7, & 12 slot versions ( ½ ATR, ¾ ATR, 1 ATR), supporting VME, cPCI, VPX, VPX-VME & cPCI-VME hybrid backplanes. A total PSU power of up to 1550 watts may be installed. Custom modifications can be designed upon request.
Internal layout is divided into 4 independent metallic partitions. I/O section at the front, card-cage, PSU section & exhaust fans at the rear. This improves EMI/EMC performance & reduces PSU noise on system electronics.
Attention to I/O flexibility and easy board integration; allowing the intermixing of wedgelock IEEE P1101.2 conduction cooled boards, IEC-297 air cooled modules, Compact PCI 1101.1/IEC/118/ CD and VPX VITA 46.0/.1/.10/.3/.4/.7 air cooled boards.
Slots / Pitch:5 | 7 | 12 0.8"
Sealed (Dry Air):≤ 400W
The 6U HES chassis is suitable for medium wattage sealed applications that demand superior cooling capability.
HES - Chassis Global Thermal Resistance (CGTR) coefficient:
ΔT/W = 0.105°C (½ ATR) | 0.096°C (¾ ATR) | 0.081°C (1 ATR) .
HES - Chassis Payload Thermal Resistance (CPTR) coefficient:
ΔT/W = 0.117°C (½ ATR) | 0.107°C (¾ ATR) | 0.0903°C (1 ATR).
For reliable operation it is recommended the maximum Payload Power not be exceeded. Subject to operating conditions.
All CM 6U ATR chassis are delivered tested, qualified and certified per Military Standards MIL-STD-461E & MIL-STD-810F.
CM 6U HES military backplanes are available in VPX, VMEbus, cPCI, or combinations of VPX-VME64 or cPCI-VME64 hybrids, providing standard bus slot and signal daisy-chain functionalities. Designed to improve card-cage mechanical performance with 0.8 inch pitch slots & implement many features.
All 6U backplanes install specific TTL logic circuitry for driving up to 8 front panel user LED indicators. Units fitted with a Temperature Supervisory Unit will also drive an additional panel LED TEMP (over/under temperature indicator).
All HES backplanes integrate a Temperature Supervisory Unit (TSU) with panel LED (over/under temperature) that controls Power Supply & Fan operation. Remote optoisolated control switches for ‘Battle-short’ & chassis PSU ‘on/standby’ are fitted as standard but not activated by default.
CM 6U military backplanes allow unlimited pin I/O wiring capability. Flexible top & bottom wiring integration is facilitated by a standard 25mm bottom cavity clearance to avoid requiring a custom backplane.
Final slots in 12 & 7 slot chassis allow for bus functionality & contain power/control provisions to accept a eurocard-size metallically caged Redundant PSU. A single slot RPSU up to 575W operates in parallel with main PSU on a load-sharing basis to minimize component stress.
Custom backplanes maybe designed upon customer request.
CM backplanes support one or two 100W power sockets for optional micro-size DC/DC military converters with user defined output voltage. The converters are useful for increasing the +5VDC or +3.3VDC power lines or for generating isolated positive, negative or bipolar auxiliary DC voltages.
Class 1 military power input connectors offer reliable shock & vibration interconnectivity between chassis internal modules and allows high DC current rates with low voltage drops & minimum contact heating.
6U backplanes are supplied with military conformal coating. Printed circuits boards are partially coated per MIL-I-4658C in areas in which do no affect VPX, VME, cPCI, or I/O connectors.
All 6U models integrate similar backplane electronics for easy switch-overs, retrofits or replacement parts.
6U HES chassis PSUs support a wide variety of AC/DC input voltages (MIL-STD-704 & MIL-STD-1275) and customer defined DC power output combinations up to 1050 Watts. Available in different versions to suit input voltage requirments.
All PSU models are fitted with Power Fail Monitor, remote voltage sensing, output voltage trim-up, time-delayed protection fuses, rear fan fuse and DC/DC converter remote shutdown.
To comply with MIL-STD-461E, a high capacity integrated EMI/EMC input voltage filter is fitted as standard on all 6U models. PSUs are custom made to match the enclosure mechanics.
200VAC 3-Phase PSU versions incorporate AC/DC rectifier stage prior to the VICOR FIAM front-end modules.
DC PSUs are equipped with a VICOR military Filter and Attenuator Module (FIAM). This front-end device is fitted prior to the DC/DC converters to provide EMI filtering, inrush current limiting and transient protection.
Front-end FIAM modules are protected against DC reverse polarity. An optional reverse polarity diode may be fitted in series with power connector input pin IN (+).
Single-phase AC PSUs are fitted with a VICOR military Filter and Autoranging Rectifier Module (FARM) to provided EMI filtering, autoranging line rectification and inrush current limiting to meet MIL-STD-461E category A1b specifications for Electromagnetic Compatibility.
6U HES PSUs incorporate isolated DC/DC converters & oversized hold-up capacitors to ensure proper operation during short power line failures. Outputs are protected against short-circuit, thermal-shutdown etc.
in HES models is attached to a heat exchanger panel that provides both conduction and convection cooling. Internal air recirculation dissipates heat generated by the PSU through its panel via thermal conduction to the chassis frame.
Forced air that is drawn through the heat exchangers, passing over the PSU panel external fins & exhausted, removing the majority of heat.
|WIDTH||140 mm||180 mm||281 mm|
|HEIGHT||236 mm||236 mm||236 mm|
|DEPTH||455 mm||455 mm||455 mm|
|WEIGHT||7.5 Kg||8.9 Kg||12.5 Kg|
|CGTR COEFF||ΔT/W = 0.105°C||ΔT/W = 0.096°C||ΔT/W = 0.081°C|
|CPTR COEFF||ΔT/W = 0.117°C||ΔT/W = 0.107°C||ΔT/W = 0.0903°C|
|PSU MAX POWER||575 Watts (28 VDC 475 Watts)||825 Watts (28 VDC 675 Watts)||1550 Watts (28 VDC 1350 Watts)|
|PSU V-INPUT||28 VDC ±30%, 48 VDC ±30%, 72 VDC ±30%, 270 VDC ±30%, Autorange 90-132 VAC RMS & 180-264 VAC RMS 47-880 Hz, 3-Phase 200 VAC ±30% 47-880 Hz|
|STD BACKPLANE||6U (0.8" Pitch), VME64X or cPCI or VPX or Hybrid VME64X/VPX or VME64X/cPCI|
|BOARD FORMAT||CCS: Conduction-cooled slots only or MCS: Slot-by-slot user configured card-cage allows intermixing conduction-cooled ANSI-VITA 48.2 & air-cooled ANSI-VITA 48.1 boards|
|EXT. REAR FAN||2 Rotron PX2||2 Rotron PX2||4 Rotron PX2|
|F115-400||130 CFM||130 CFM||260 CFM|
|F200-400||240 CFM||240 CFM||480 CFM|
|F28||130 CFM||130 CFM||260 CFM|
|INTERNAL FAN||27 CFM||54 CFM||108 CFM|
|FRONT PANEL AREA||101 mm x 172.5 mm||141.5 mm x 172.5 mm||243 mm x 172.5 mm|
|6 Power Pins (23 Amp) & 365 I/O Pins (5 Amp)||6 Power Pins (23 Amp) & 822 I/O Pins (5 Amp)||6 Power Pins (23 Amp) & 1057 I/O Pins (5 Amp)|
|OPERATING TEMP||-40 °C to +85 °C Operating Temperature, -55 °C to 100 °C Storage Temperature|
|MTBF||25° GB 82,000 Hours, 65° AIC 27,000 Hours||25° GB 80,000 Hours, 65° AIC 26,000 Hours||25° GB 63,000 Hours, 65° AIC 20,000 Hours|
These highly optimized 6U chassis incorporate all proprietary technologies, features and well established mechanical & electrical solutions developed during the past 27 years.FAC:Flow-through airflow open enclosure.