Siemens SIMOTICS A 1FU8, Operating Instructions Manual

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Description
3.3 Installation
1FU8
Operating Instructions, 02/2016, 5 610 70000 02 000
23
3.3.3.1 Machines with a fan
Self-ventilation (standard): Cooling IC 411 in accordance with EN / IEC 60034-6
Located at the ND end of the stator housing is an air intake cowl that guides the external air
on its way to the motor. The external air is drawn in through openings in the air intake cowl
and flows axially across the outer cooling ribs of the motor frame. The fan wheel for the
external flow of cooling air is attached to the machine shaft.
The fan wheels are bidirectional.
Check the cooling effect below rated speed in the case of frequent switching or braking – or
if the speed is controlled continually below the rated speed.