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2 Safety requirements and installation instructions
2.3
Installation in zone 2
–
Adhere to the specified conditions for use in potentially explosive areas. Install the device in a suit-
able approved housing with at least IP54 protection that meets the requirements of EN 60079-15,
Section 1.
Also observe the requirements of EN 60079-14.
–
In potentially explosive areas, connecting and disconnecting cables and connectors in non-intrinsi-
cally safe electrical circuits or actuating DIP switches is only permitted in a de-energized state or if
no potentially explosive atmosphere is present.
–
The device must be taken out of operation and removed from the Ex area immediately if it is dam-
aged, has been improperly stressed or stored, or malfunctions.
–
Temporary malfunctions (transients) must not exceed the value 497 V (355 V x 1.4).
2.4
Areas that are potentially explosive due to dust
–
The device is not designed for installation in Zone 22.
–
If you nevertheless want to use the device in Zone 22, you have to install it in a housing according
to EN 60079-31. In doing so, observe the maximum surface temperatures. Adhere to the require-
ments of EN 60079-14.
–
Only carry out interconnection with the intrinsically safe electrical circuit in areas that are potentially
explosive due to dust (Zones 20, 21, or 22) if the equipment connected to this electrical circuit is
approved for this zone (e.g. category 1D, 2D, or 3D).
2.5
Safety-related applications (SIL)
When using the device in safety-related applications, observe the instructions in the chapter "Safety-re-
lated applications", as the requirements for the safety-related function vary.
chapter 5 "Safety-related applications", Page 19
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