Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Wiring
General guidance
2-16
2
2.9 Wiring
Appropriate use by trained personnel
●
The PCD7.LRxx-P5 room controllers have
slots under their terminals for cable ties to
secure cables and provide strain relief.
1 2
max. 9 mm
max. 3 mm
●
230 VAC supply lines and data lines must be wired separately with a minimum
distance of 10 cm between them. We recommend leaving space between the
supply and data lines inside the control cabinet as well.
●
Digital data/bus lines and analogue data/sensor lines should be wired
separately.
●
We recommend using shielded cables for analogue data lines.
●
The shielding should be earthed at the entry IN or exit OUT point of the con-
trol cabinet. The shielding should be as short as possible and have as large a
cross-section as possible. The central earthing point should be > 10 mm² and
connected to the earthing cable using the shortest possible route.
●
The shielding is normally only connected to the control cabinet on one side,
unless equipotential bonding is installed with significantly lower resistance than
the shielding resistance.
●
Inductive loads installed in the same control cabinet, e.g. protective coils, must
be equipped with suitable snubbers (RC elements).
● Control cabinet components with a high field strength, e.g. transformers or
frequency converters, should be shielded with baffle plates with a good earth
connection.
