Atex - Special Conditions (Extended Temperature Range); Atex Documentation - Beckhoff BK3 0 Series Documentation

Mounting and wiring
3.5.2

ATEX - Special conditions (extended temperature range)

Observe the special conditions for the intended use of Beckhoff fieldbus components with
extended temperature range (ET) in potentially explosive areas (directive 94/9/EU)!
• The certified components are to be installed in a suitable housing that guarantees a protection class of at
least IP54 in accordance with EN 60529! The environmental conditions during use are thereby to be
taken into account!
• If the temperatures during rated operation are higher than 70°C at the feed-in points of cables, lines or
pipes, or higher than 80°C at the wire branching points, then cables must be selected whose tempera-
ture data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range of -25 to 60°C for the use of Beckhoff fieldbus com-
ponents with extended temperature range (ET) in potentially explosive areas!
• Measures must be taken to protect against the rated operating voltage being exceeded by more than
40% due to short-term interference voltages!
• The individual terminals may only be unplugged or removed from the Bus Terminal system if the supply
voltage has been switched off or if a non-explosive atmosphere is ensured!
• The connections of the certified components may only be connected or disconnected if the supply volt-
age has been switched off or if a non-explosive atmosphere is ensured!
• The fuses of the KL92xx/EL92xx power feed terminals may only be exchanged if the supply voltage has
been switched off or if a non-explosive atmosphere is ensured!
• Address selectors and ID switches may only be adjusted if the supply voltage has been switched off or if
a non-explosive atmosphere is ensured!
Standards
The fundamental health and safety requirements are fulfilled by compliance with the following standards:
• EN 60079-0:2012+A11:2013
• EN 60079-15:2010
Marking
The Beckhoff fieldbus components with extended temperature range (ET) certified for potentially explosive
areas bear the following marking:
II 3G KEMA 10ATEX0075 X Ex nA IIC T4 Gc Ta: -25 ... 60°C
or
II 3G KEMA 10ATEX0075 X Ex nC IIC T4 Gc Ta: -25 ... 60°C
3.5.3

ATEX Documentation

Notes about operation of the Beckhoff terminal systems in potentially explosive ar-
eas (ATEX)
Pay also attention to the continuative documentation
Notes about operation of the Beckhoff terminal systems in potentially explosive areas (ATEX)
that is available in the download area of the Beckhoff homepage http:\\www.beckhoff.com!
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WARNING
Version: 4.3.0 BK3xx0