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F2-JB-#.I, F*-JB-#.*
Installation/Commissioning
Note!
Ensuring degree of protection - unused cable glands
To ensure the degree of protection IP67, seal unused (M16 and M20) cable glands with M20
sealing plugs.
8.2
Fieldbus Junction Boxes (Ex i)
Fieldbus junction boxes may be installed in accordance with their ratings in Zones 0, 1, or 2, or
in Class I, Division 1 and 2, Class II, Division 1 and 2, or Class III, Division 1 and 2.
If the installation takes place in accordance with FISCO, the maximum length of each spur is
limited to 30 m.
If stranded conductors are used in explosion-hazardous areas, the conductor ends must be
protected from fraying, e. g., by using wire end ferrules.
The diameter of individual wires in explosion-hazardous areas may not be < 0.1 mm. This also
applies to the individual cores of stranded conductors.
During installation of intrinsically safe fieldbus junction boxes and segments, observe the
standard IEC/EN 60079-14. For the Federal Republic of Germany, also observe the "National
Foreword" of IEC/EN 60079-14.
Note!
Type of protection
For equipment category 1G, Zone 0, the circuit must meet the type of protection "ia".
Danger!
Explosion hazard from electrostatic charge
Electrostatic charges can discharge and consequently ignite a surrounding potentially
explosive atmosphere while installing or operating the device.
Avoid electrostatic charges during installation and operation of the device.
Note!
EC-type examination certificate and special conditions
Observe the EC-type examination certificate. Strictly adhere to any "Special conditions"
specified there.
8.2.1
Fieldbus Junction Boxes (Ex i) in the Field Housing F*-JB**-I-***
For metallic housings in explosion-hazardous areas, a suitable equipotential bonding
according to IEC/EN 60079 is required. On the F2 housings, a grounding screw is provided for
this purpose. The F3/F4 housings feature a grounding terminal. Connections must be secured
against loosening and protected against corrosion. Corrosion protection can be achieved,
e. g., by using tinned cable plates.
Only attach permanently laid cables and lines to the cable glands.
For the permissible cable diameters refer to the respective datasheet.
Provide a suitable strain relief (e. g., a suitable cable clamp).
Observe the mounting information, see chapter 7.2.1.
Before closing the cover, visually check the installation to ensure that the cover seal shows no
visible damage. In case of damage, replace the seal with an original seal.
Tighten the cover screws to a torque of 2.5 Nm.
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