RoboteQ AX2550 Manual Do Utilizador

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board against a vertical surface as shown in the figure below will ensure a better natural 
convection flow and is, therefore, recommended.

For high current applications, it is possible that the controller may heat up faster and to a 
higher temperature than can be dissipated by the using natural convection alone.

In these applications, you should ensure that air flow exists to remove the heat from the 
heat sink. In the most extreme use, you should consider using an external fan to circulate 
air around the controller.

The AX1500 can be attached to a metal chassis to improve heat dissipation. For this pur-
pose the board has holes at the corners of the PCB, which can be used to fasten it to the 
chassis.

Of course first it is necessary to remove the blue heat sink, which is mounted as standard.

A total of 6 screws for the AX1500 are required, four on the corners and two in the heat 
sink area.

In order to avoid that components leads sticking out the back of the PCB make contact 
with the chassis it is needed to interpose a metal bar (interposer) of thickness sufficient to 
distance the PCB from the surface of the chassis.

FIGURE 103. Mount the controller against a vertical surface to maximize convection flow