Lenze E70AC Series Hardware Manual page 80

5 Mechanical installation
Notes on mounting the device version in push−through design
Assembly in push−through technique (thermal separation)
All about cooling
A good cooling is achieved by a focussed air flow at the cooling ribs.
By measuring the air speed, the compliance with the required cooling should be checked.
The measurement has to be executed at the points (MP) defined in the illustration for the
heatsink cross−section.
Fig. 5−3
If a single fan is to cool several devices, this fan has to provide the sum of all volume flows.
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Tip!
An air channel serves to implement a protection against accidental contact
towards the hot heatsink surface.
An air channel provides a sufficient air flow for each device.
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Positions of the measuring points, centrally above the heatsink
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EDS700ACBA EN 5.1