Siemens S120 Benutzerhandbuch
Motor assembly
6.2 Protecting the motor components
1FW6 Built-in torque motors
100
Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3
6.2
Protecting the motor components
Degree of protection
The machine construction surrounding the motor must fulfill at least degree of protection
IP54 (to EN 60529).
The degree of protection for built-in motors is governed by the surrounding machine
The degree of protection for built-in motors is governed by the surrounding machine
construction. The better the motor installation space is protected against the ingress of
foreign particles (ferromagnetic particles), the longer the service life.
In particular, foreign particles in the air gap between the stator and rotor can destroy the
In particular, foreign particles in the air gap between the stator and rotor can destroy the
motor during operation.
This also applies to corrosive chemicals (e.g. coolants, oil) that could penetrate the motor
This also applies to corrosive chemicals (e.g. coolants, oil) that could penetrate the motor
compartment. Corrosive chemicals can damage the magnetic bonds of the rotor.
Liquids can compromise the insulation resistance of the stator.
The thermal properties of the motor are influenced by the ingress of liquids and foreign
Liquids can compromise the insulation resistance of the stator.
The thermal properties of the motor are influenced by the ingress of liquids and foreign
particles.
WARNING
Contamination in the motor compartment can cause the motor to stop functioning or cause
wear and tear.