Appendix; General Operating Conditions - Beckhoff EPI4 Series Documentation

Appendix

7 Appendix
7.1

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
0
1
2
3
4
5
6
2. Number: water* protection
0
1
2
3
4
5
6
7
*) These protection classes define only protection against water.
Chemical Resistance
The Resistance relates to the Housing of the IP67 modules and the used metal parts. In the table below you
will find some typical resistance.
Character
Steam
Sodium base liquor
(ph-Value > 12)
Acetic acid
Argon (technical clean)
Key
• resistant: Lifetime several months
• non inherently resistant: Lifetime several weeks
• not resistant: Lifetime several hours resp. early decomposition
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Definition
Non-protected
Protected against access to hazardous parts with the back of a hand. Protected against solid
foreign objects of Ø 50 mm
Protected against access to hazardous parts with a finger. Protected against solid foreign ob-
jects of Ø 12.5 mm.
Protected against access to hazardous parts with a tool. Protected against solid foreign objects
Ø 2.5 mm.
Protected against access to hazardous parts with a wire. Protected against solid foreign objects
Ø 1 mm.
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.
Protected against access to hazardous parts with a wire. Dust-tight. No intrusion of dust.
Definition
Non-protected
Protected against water drops
Protected against water drops when enclosure tilted up to 15°.
Protected against spraying water. Water sprayed at an angle up to 60° on either side of the ver-
tical shall have no harmful effects.
Protected against splashing water. Water splashed against the disclosure from any direction
shall have no harmful effects
Protected against water jets
Protected against powerful water jets
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 wa-
ter for 30 min. in 1 m depth.
Resistance
at temperatures >100°C: not resistant
at room temperature: resistant
> 40°C: not resistant
not resistant
resistant
Version: 1.6 EPI4xxx, ERI4xxx