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3. Install and secure the cables entering the enclosure and make sure they have adequate
strain relief. The cable entry may only be used for strain relief if suitable cable glands are
used.
4. Route the cables from below through the associated glands and tighten the clamping screw
of the gland at the torque specified in the manufacturer's instructions.
5. Make a short connection between the cable screen and the equipotential bonding rail.
6. If you remove the the detachable connections between equipotential bonding rail and
mounting plate, you can install the bonding rail ungrounded if required (see Design of
enclosure (Page 13)).
7. Route and connect in accordance with EN 60079-11:
– The power supply cable
– The bus cable
– The signal cables
In hazardous areas, the installation regulations according to EN 60079-14 and the national
regulations must also be observed.
8. If you replace installed components, follow the instructions in the manufacturer's description
of the device.
5.3
Installing the enclosure outdoors
The enclosure should have at least IP56 protection when installing outdoors. This prevents
damaging amounts of dirt or water from penetrating the enclosure under normal ambient
conditions. Take the following additional protective measures depending on the environment
of the installation location:
● Avoid subjecting the enclosure permanently to water (for example, snow).
● Remember that direct sunlight can cause excessive temperatures in the interior of the
enclosure. In locations where this can occur, provide additional protection with some form
of roofing.
● Note that opening the enclosure at ambient temperatures below 0 °C can damage the seal
as a result of freezing.
● Condensation may be produced within the enclosure due to temperature variations. Climate
nozzles are therefore installed to permit drainage and pressure compensation. Ensure
when mounting the enclosure that the climate nozzles are at the lowest position.
● If you want to use the device in an aggressive environment, check whether this is possible
with the material in question.
Distributed I/O 6DL2804-3xxxx & 6DL2804-4xxxx
Hardware Installation Manual, 04/2017, A5E41591350-AA
5.3 Installing the enclosure outdoors
Mounting
21
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