Ensure Adequate Cooling; Interlock Circuit For The Separately Driven Fan Motor - Siemens SIMOTICS SD Operating Instructions Manual

4.6

Ensure adequate cooling

Overheating and failure of the motor
Death, severe injury or material damage can occur if you do not strictly comply with the
following points, for explosion-proof machines, an explosion can occur.
• Do not obstruct the ventilation.
• Prevent the air expelled by neighboring equipment from being immediately sucked in again.
• For vertical types of machine construction with the air intake from above, protect the air
• If the shaft extension is facing upwards, liquid must be prevented from entering by moving
Damage to the ventilation system
Material damage and injury can occur if the fan is destroyed and therefore the machine
overheats.
• Prevent foreign bodies from falling into the fan cover. For vertical machine installation with
• Take suitable measures to prevent water from entering the ventilation system. The optional
• Ensure that the cooling air flow is not reduced as a result of covers and that the minimum
4.6.1

Interlock circuit for the separately driven fan motor

For machines with separately driven fans, install an interlock circuit that prevents the main
machine being switched on if the separately driven fan is not operational.
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A
WARNING
intakes from the ingress of foreign bodies and water.
along the shaft.
WARNING
the shaft end facing downwards, attach a protective canopy.
canopy is not suitable as protection against water ingress.
air clearances are maintained.
Preparing for use
4.6 Ensure adequate cooling
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