Asis AdvancedTCA Class

Asis AdvancedTCA ClassAsis AdvancedTCA Class

Fan TrayFan TrayFan 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.


cooling approaches :cooling approaches :• Push OnlyPush Only• Pull OnlyPull Only• Push-pullPush-pull

– fan failure produces high air impedancefan failure produces high air impedance– difficult to achieve high air flow difficult to achieve high air flow

• Parallel fans – similar limitationsParallel fans – similar limitations• Top Vs. Bottom fan traysTop Vs. Bottom fan trays• Side to sideSide to side

The Picmg Atca 3.X Spec recommendThe Picmg Atca 3.X Spec recommendThe cooling Approach front bottom to The cooling Approach front bottom to Back top As shown in the picture Back top As shown in the picture

Cooling approach - Points to considerCooling approach - Points to considerfront 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 2U-5U horizontal chassis have one vertical fan tray.Asis 2U-5U horizontal chassis have one vertical fan tray.

Asis 12U horizontal chassis have two vertical fan trays.Asis 12U horizontal chassis have two vertical fan trays.

Asis 12U vertical has four fan trays.Asis 12U vertical has four fan trays.

The fan trays are designed with N+1 redundancy to meet the cooling 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 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 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 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 between the shelf manager and on of the Fan trays the rest of the fan trays

will go to full speed to compensate.will go to full speed to compensate.

In case of single fan failure, the remaining fans provide the required cooling 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 Dissipate the heat generated by the occupied slots. It is recommended to to

replace the Fan tray as soon as possible.replace the Fan tray as soon as possible.

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

can be Replaced while the shelf is operatingcan be Replaced while the shelf is operating.


2 slots fan tray - 2 slots fan tray -

5 slots fan tray - 5 slots fan tray -


14 slots horizontal fan trays 14 slots horizontal fan trays Containing 9 axial fans eachContaining 9 axial fans each

14 slots vertical fan tray - 14 slots vertical fan tray - Containing 5 axial fansContaining 5 axial fansThree of them horizontal and two verticalThree of them horizontal and two vertical

For further information about the Fan trays , please refer to the relevant chassis User

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

Partners zone in order to download the manual.


http://www.asis-pro.com/

Documents

Asis AdvancedTCA Class