BECKHOFF Fieldbus Components: Appendix

General operating conditions

Protection degrees (IP-Code)

The standard  IEC 60529 (DIN EN 60529) defines the degrees of protection in different classes.

1. Number: dust protection
and touch guard
Definition
0 Non-protected
1 Protected against access to hazardous parts with the back of a hand. Protected against solid foreign objects of Ø50 mm
2 Protected against access to hazardous parts with a finger. Protected against solid foreign objects of Ø12,5 mm.
3 Protected against access to hazardous parts with a tool. Protected against solid foreign objects Ø2,5 mm.
4 Protected against access to hazardous parts with a wire. Protected against solid foreign objects Ø1 mm.
5 Protected against access to hazardous parts with a wire. Dust-protected. Intrusion of dust is not totally prevented, but dust shall not penetrate in a quantity to interfere with satisfactory operation of the device or to impair safety.
6 Protected against access to hazardous parts with a wire. Dust-tight. No intrusion of dust.
2. Number: water* protection Definition
0 Non-protected
1 Protected against water drops
2 Protected against water drops when enclosure tilted up to 15°.
3 Protected against spraying water. Water sprayed at an angle up to 60° on either side of the vertical shall have no harmful effects.
4 Protected against splashing water. Water splashed against the disclosure from any direction shall have no harmful effects
5 Protected against water jets
6 Protected against powerful water jets
7 Protected against the effects of temporary immersion in water. Intrusion of water in quantities causing harmful effects shall not be possible when the enclosure is temporarily immersed in water for 30 min. in 1 m depth.

*) These protection classes define only protection against water!

Chemical Resistance

The Resistance relates to the Housing of the Fieldbus Box and the used metal parts.

Character Resistance
Steam at temperatures >100°C: not resistant
Sodium base liquor
(ph-Value > 12)
at room temperature: resistant
> 40°C: not resistant
Acetic acid not resistant
Argon (technical clean) resistant
Key

resistant: Lifetime several months
non inherently resistant: Lifetime several weeks
not resistant: Lifetime several hours resp. early decomposition