10
Installation BRS20/22/30/32/40/42/50/52
Release
12
01/2022
Qualification requirements for personnel
Only allow qualified personnel to work on the device.
Qualified personnel have the following characteristics:
Qualified personnel are properly trained. Training as well as practical
knowledge and experience make up their qualifications. This is the
prerequisite for grounding and labeling circuits, devices, and systems
in accordance with current standards in safety technology.
Qualified personnel are aware of the dangers that exist in their work.
Qualified personnel are familiar with appropriate measures against
these hazards in order to reduce the risk for themselves and others.
Qualified personnel receive training on a regular basis.
Device casing
Only technicians authorized by the manufacturer are permitted to open
the casing.
Shielding ground
The shielding ground of the connectable twisted pair cables is connected
to the ground connection as a conductor.
Beware of possible short circuits when connecting a cable section with
conductive shielding braiding.
Grounding the device
The device is grounded via the separate ground screw. The grounding
screw is located on the front right side of the device for narrow casing
sizes. For the medium and wide casing sizes, the grounding screw is
located at the bottom left of the front side of the device.
See “Dimension drawings” on page 84.
Ground the device before connecting any other cables.
Disconnect the grounding only after disconnecting all other cables.
Requirements for connecting electrical wires
Before connecting the electrical wires, always verify that the
requirements listed are complied with.
The following requirements apply without restrictions:
The electrical wires are voltage-free.
The cables used are permitted for the temperature range of the application case.
Only use power supply cables that are suitable for a temperature 20 °C (36 °F)
higher than the maximum ambient air temperature at which the device is used.
Only use copper wire.
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