Asis AdvancedTCA Class
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Asis AdvancedTCA Class. Fan Tray Fan tray is a component responsible of supplying sufficient shelf cooling According to the Parameters send from the shelf manager either via direct Lines or Communication. Asis fan trays are designed according to the Picmg 3.X Specifications.

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Asis AdvancedTCA Class

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Asis advancedtca class

Asis AdvancedTCA Class

Fan Tray

Fan tray is a component responsible of supplying sufficient shelf cooling

According to the Parameters send from the shelf manager either via direct

Lines or Communication.

Asis fan trays are designed according to the Picmg 3.X Specifications.

It’s design enables Asis shelf to exceed the Atca cooling specifications

detailed in the Picmg Atca 3.x spec.

Asis uses state of the art Delta Fans for cooling the shelf, all the fans are

Controlled by the Shelf manager and have an integral Tachometers for

Closed loop monitoring.


Asis advancedtca class

Asis AdvancedTCA Class

cooling approaches :

  • Push Only

  • Pull Only

  • Push-pull

    • fan failure produces high air impedance

    • difficult to achieve high air flow

  • Parallel fans – similar limitations

  • Top Vs. Bottom fan trays

  • Side to side

    The Picmg Atca 3.X Spec recommend

    The cooling Approach front bottom to

    Back top As shown in the picture


Asis advancedtca class

Asis AdvancedTCA Class

Cooling approach - Points to consider

front panel Blades cooling

Massive air flow

  • NEBS type air filter becomes an obstacle.

  • Wide inlet and exhaust openings

  • contradict design for EMI.

    Angular fan placement limitation Design for balanced and aerodynamic air flow Adopt a system approach - Chassis and blades Control the air flow distribution per customer configuration.


Asis advancedtca class

Asis AdvancedTCA Class

Asis 2U-5U horizontal chassis have one vertical fan tray.

Asis 12U horizontal chassis have two vertical fan trays.

Asis 12U vertical has four fan trays.

The fan trays are designed with N+1 redundancy to meet the cooling

Requirements Of A full shelf, furthermore in the 14 slots vertical there are

four fan trays which Backup one etch other, incase of a signal fan fail all the

fans in the fan tray go to full Speed and incase of communication lose

between the shelf manager and on of the Fan trays the rest of the fan trays

will go to full speed to compensate.

In case of single fan failure, the remaining fans provide the required cooling

To Dissipate the heat generated by the occupied slots. It is recommended to

replace the Fan tray as soon as possible.

The fan tray is factory-mounted in the Shelf. It is easily replaceable, and

can be Replaced while the shelf is operating.


Asis advancedtca class

Asis AdvancedTCA Class

2 slots fan tray -

5 slots fan tray -


Asis advancedtca class

Asis AdvancedTCA Class

14 slots horizontal fan trays

Containing 9 axial fans each

14 slots vertical fan tray -

Containing 5 axial fans

Three of them horizontal and two vertical


Asis advancedtca class

Asis AdvancedTCA Class

For further information about the Fan trays ,

please refer to the relevant chassis User Manual

At www.asis-pro.com , please login at the

Partners zone in order to download the manual.


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