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Installation/Commissioning
8.3
Fieldbus Junction Boxes with Short Circuit Current Limitation for
Equipment Category 3 G
The integrated terminator may only be connected if all the following conditions apply:
■
the fieldbus junction box is the last one on the segment
■
the terminator of the field device is not in use
For the position of the slide refer to:
F2 housing: see chapter 9.1
F3 housing: see chapter 9.2
F4 housing: see chapter 9.3
Only devices suitable for operation in explosion-hazardous (classified) locations in Zone 2 or
Class I, Division 2, and the local operating conditions may be connected to these circuits (see
manufacturer's declaration or certificate from test facility).
All unused cable glands must be plugged with a suitable sealing or stopping plug. The sealing
or stopping plugs must be suitable for this application.
The stopping plugs must only be replaced by cable glands that are adapted for the intended
use. When mounting the cable glands, pay attention to the respective documentation.
Danger!
Explosion hazards from permanent live wiring
If you frequently connect or disconnect energized circuits in a Zone 2 or Class I, Division 2
potentially explosive atmosphere, there could be a probability that sparks might ignite the
surrounding atmosphere.
Connect, disconnect, or switch circuits under voltage in Zone 2 or Class I, Division 2 only
during installation, maintenance, or for repair purposes.
Note!
Ensuring degree of protection
To ensure the degree of protection IP54, secure any unused M12 or 7/8" connectors in an
appropriate way.
Note!
Ambient temperature range restrictions
The ambient temperature range can be restricted by the sealing or stopping plug and the cable
gland. will be. Observe the respective documentation when installing the cable gland.
Danger!
Explosion hazards from live connection or disconnection
If you connect or disconnect M12 or 7/8" connectors to or from energized circuits in a
potentially explosive atmosphere, this can cause sparks that might ignite the surrounding
atmosphere.
Always deenergize the circuit before connecting or disconnecting M12 or 7/8" connectors.
