2
0
1
8
-0
7
12
Product Specifications
2.3
Hazardous Area Installation and Use
The device may be operated in Zone 1.
For applications in Zone 1, the type of protection must be Ex i according to Entity or FISCO.
The device may be installed in Zone 2.
The type of protection for the trunk interface is Ex ec or Ex ic according to Entity or FISCO.
Independent of the type of protection of the fieldbus interface, the inputs/outputs remain
intrinsically safe and may be installed in Zone 1.
Zone 2
Type of Protection "Ex i"
Type of Protection "Ex ec"
Danger!
Explosion hazard from live wiring of non-intrinsically safe circuits
If you connect or disconnect energized non-intrinsically safe circuits in a potentially explosive
atmosphere, sparks can ignite the surrounding atmosphere.
Only connect or disconnect energized non-intrinsically safe circuits in the absence of a
potentially explosive atmosphere.
Danger!
Explosion hazard from wrong separation distances
Non-observance of the separation distances between circuits can result in added currents or
voltages. This can result in a current/voltage flashover generating sparks. The sparks can ignite
the surrounding potentially explosive atmosphere.
Ensure you observe the compliance of the separation distances according to
IEC/EN 60079–14.
Danger!
Explosion hazard from wrong calculation of verification of intrinsic safety
If you do not consider the maximum permissible peak values of all components when
connecting intrinsically safe devices with intrinsically safe circuits of associated apparatus, this
can lead to added currents or voltages. This, in return, can result in a current/voltage flashover
generating sparks. The sparks can ignite the surrounding potentially explosive atmosphere.
Ensure you observe IEC/EN 60079-14 and IEC/EN 60079-25 for the verification of intrinsic
safety.
Danger!
Explosion hazard from pollution
An excessively polluted surface of the device can become conductive and consequently ignite
a surrounding potentially explosive atmosphere.
Ensure that you install the device only in environments with a pollution degree 2 or better
according to IEC/EN 60664–1.
