IECEx - Special conditions

Observe the special conditions for the intended use of Beckhoff fieldbus components in potentially explosive areas!

• For gas: The equipment shall be installed in a suitable enclosure providing a degree of protection of IP54 according to IEC 60079-15, taking into account the environmental conditions under which the equipment is used!
• For dust (only the fieldbus components of certificate no. IECEx DEK 16.0078X Issue 3):
  The equipment shall be installed in a suitable enclosure providing a degree of protection of IP54 according to EN 60079-31 for group IIIA or IIIB and IP6X for group IIIC, taking into account the environmental conditions under which the equipment is used!
• The equipment shall only be used in an area of at least pollution degree 2, as defined in IEC 60664-1!
• Provisions shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 119 V!
• 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 temperature data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range for the use of Beckhoff fieldbus components in potentially explosive areas!
• 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 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!
• The front hatch of certified units may only be opened if the supply voltage has been switched off or a non-explosive atmosphere is ensured!