Selecting The Motor Degree Of Protection - Siemens SIMODRIVE 611 Configuration Manual

2.2

Selecting the motor degree of protection

2.2
Degree of protection
The degree of protection designation according to EN 60034-5 and IEC 60034-5 consists of
the letters "IP" and two digits (e.g. IP64). The second digit in the designation represents the
protection against water, the first digit the protection against penetration of foreign matter.
Since coolants are used for machine tools and transfer machines that contain oil, are able to
creep, and may also be corrosive, protection against water alone is insufficient. The
designation for the degree of protection should only be considered here as a guideline. Our
sealing systems are based on many years of practical experience, exceed the IEC
definitions by far, and are appropriate for the requirements of machine tools.
The table can serve as a decision aid for selecting the proper degree of protection for
servomotors. For types of construction IM V3/IM V19, liquid may only be present at the
flange for IP67.
Table 2-4
Liquid
Effect
Dry
Water-enriched environment
Mist
Spatter
Jet
Wave; brief immersion; continuous
flooding (deckwater)
1)
2)
General Section for Synchronous Motors
Configuration Manual, (PJAL), 11.2005 Edition, 6SN1 197-0AD07-0BP4
Selecting the motor degree of protection
IP67 for versions with holding brake and oil as cooling medium
IP 64 for dry running at the shaft outlet
2.2 Selecting the motor degree of protection
General Water;
workshop
General cooling-
environment
lubricating medium
(95 % H2O; 5 % oil); oil
IP64
- IP64
-
-
-
-
Mechanical Data
Penetrating oil;
Petroleum;
Aggressive cooling-
lubricating medium
-
IP67
1)
IP65
IP65
IP67
IP67
-
2)
IP67
IP68
IP68
IP68
2-5