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ABB-Welcome
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6.2
General installation instructions
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Terminate all branches of the wiring system via a connected bus device (e.g.,
indoor station, outdoor station, system device).
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Do not install the system controller directly next to the bell transformer and other
power supplies (to avoid interference).
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Do not install the wires of the system bus together with 100-240 V wires.
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Do not use common cables for the connecting wires of the door openers and wires
of the system bus.
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Avoid bridges between different cable types.
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Use only two wires for the system bus in a four-core or multi-core cable.
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When looping, never install the incoming and outgoing bus inside the same cable.
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Never install the internal and external bus inside the same cable.
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Check the type supply network (TN system, IT system, TT system)
to secure the following power supply conditions (classic
connection to ground, protective earthing, necessary additional
measures, etc.).
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