Appendix; General Operating Conditions - Beckhoff EPP4314-1002 Documentation

Appendix

7 Appendix
7.1

General operating conditions

Protection rating according to IP code
The degrees of protection are defined and divided into different classes in the IEC 60529 standard
(EN 60529). Degrees of protection are designated by the letters "IP" and two numerals: IPxy
• Numeral x: Dust protection and contact protection
• Numeral y: Protection against water
x Meaning
0 Not protected
1 Protected against access to dangerous parts with the back of the hand.
Protected against solid foreign objects of 50 mm Ø
2 Protected against access to dangerous parts with a finger.
Protected against solid foreign objects of 12.5 mm Ø
3 Protected against access to dangerous parts with a tool.
Protected against solid foreign objects of 2.5 mm Ø
4 Protected against access to dangerous parts with a wire.
Protected against solid foreign objects of 1 mm Ø
5 Protection against access to dangerous parts with a wire.
Dust-protected. Ingress of dust is not prevented completely, although the quantity of dust able to penetrate
is limited to such an extent that the proper function of the device and safety are not impaired
6 Protection against access to dangerous parts with a wire.
Dust-tight. No ingress of dust
y Meaning
0 Not protected
1 Protection against vertically falling water drops
2 Protection against vertically falling water drops when enclosure tilted up to 15°
3 Protection against spraying water. Water sprayed at an angle of up to 60° on either side of the vertical shall
have no harmful effects
4 Protection against splashing water. Water splashed against the enclosure from any direction shall have no
harmful effects
5 Protection against water jets.
6 Protection against powerful water jets.
7 Protected against the effects of temporary immersion in water.
Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is immersed
in water at a depth of 1 m for 30 minutes
Chemical resistance
The resistance refers to the housing of the IP67 modules and the metal parts used. In the table below you
will find some typical resistances.
Type Resistance
Water vapor unstable at temperatures > 100 °C
Sodium hydroxide solution stable at room temperature
(ph value > 12) unstable > 40 °C
Acetic acid unstable
Argon (technically pure) stable
Key
• resistant: Lifetime several months
• non inherently resistant: Lifetime several weeks
• not resistant: Lifetime several hours resp. early decomposition
76 Version: 1.3 EPP4314-1002