Degree Of Protection - Siemens SIMOTICS S-1FT2 Operating Instructions Manual

2.2.5

Degree of protection

The degree of protection designation in accordance with EN 60034-5 (IEC 60034-5) is
described using the letters IP and two digits, e.g. IP64.
IP = International Protection
1st digit = protection against the ingress of foreign bodies
2nd digit = protection against water
The validity of DIN 60034-5 refers to water as a medium that can potentially enter, and not
oil. Since machine tools, for example, use oil-containing, creep-capable and/or aggressive
cooling lubricants, protection only against water is not sufficient.
Configure the motor in the environment of creep-capable oils with the appropriate degree of
protection.
Effect / environment
Dry
Environment with liquids
Mist
Spray
Jet
Splash, brief submersion
Specified degrees of protection as a function of the ambient conditions
Available degrees of protection
1FT2 motors can be supplied with degree of protection IP64, IP65, or IP67 according to
EN 60034-5 (IEC 60034-5).
The degree of protection is stated on the rating plate.
The motors with degree of protection IP65 and IP67 have a radial shaft sealing.
1FT2☐03 ... 1FT2☐04
①
The radial shaft sealing ring shortens the usable shaft extension on the 1FT2☐03 and
1FT2☐04.
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
Operating Instructions, 07/2021, A5E50610821B AB
Radial shaft sealing ring
2.2 Technical features and environmental conditions
General Water,
workshop general cooling lubricant
environment (95% water, 5% oil), oil
IP64
-
-
-
-
-
1FT2☐05 ... 1FT2☐10
Description of the motors
Creep oil, kerosene,
aggressive cooling
lubricants
-
IP64
IP65
IP65
IP67
IP67
-
IP67
IP67
IP67
IP67
IP67
25