5
Wiring
Safety instructions
DANGER!
Danger of electric shock! Do not touch any live com-
ponents! Electrical equipment carries a dangerous
electrical voltage.
–
Only skilled qualified electricians are allowed to
work on the electrical system.
–
Switch off the power supply before working on
any electrical equipment.
5.1 Installation instructions
The VAV terminal unit was manufactured and configured
on a project-specific basis. The control components are
factory-mounted and balanced. For installation, the
supply voltage and, if necessary, signal lines, must be
connected for electrical control components.
The connection is made according to the information
given on the control components or connection dia-
grams in this manual. The voltage ranges and the ter-
minal connections specified on the control components
must be observed!
Personnel:
Skilled qualified electrician
Please note during installation:
Legal and official regulations, in particular VDE
guidelines.
Consideration of the technical connection rules
(TCR) of the local network operators.
Wiring work for supply voltage and signal lines on
site.
The rating and manufacture of customer-side con-
nections and wiring must be carried out in accord-
ance with the recognised rules of electrical engi-
neering.
Observe wiring guidelines and the customer's
project-specific connection diagrams of the control
component.
The electrical connection to the terminal unit may
only be made if the installation has been carried out
correctly.
The 24 V supply voltage may only be supplied with
a safety power supply unit.
If several control components are connected to a
24 V mains supply, it must be ensured that a
common zero or ground line is defined and not inter-
changed.
The control component contains no parts that can
be replaced or repaired by the user and may only be
opened by the manufacturer.
Lay connecting cables in such a way that they
cannot be accidentally damaged by mechanical
impact or by heat.
Electrical safety
The control component complies with all relevant stand-
ards and guidelines, see declaration of conformity.
Open terminals
According to the electro-technical regulations, contact
protection insulation is only required for active parts.
Because Compactregler controllers are operated with
protective extra-low voltage (PELV), the screw terminals
are not considered to be active parts.
To protect the terminals, fit the terminal cover included
in the supply package.
Wire clamping bracket
Devices that are permanently installed in buildings are
stationary electrical equipment for which no strain relief
on the connecting cables is prescribed.
5.2 Connection diagrams
5.2.1 Terminals
Compact
-
+
-
+
Y U B+ A-
Fig. 11: Terminals
Terminal Function
-
Ground, neutral
+
24 V AC / DC supply voltage
Y
Setpoint value signal (Y) 0 – 10 V DC
and/or 2 – 10 V DC override control
U
Actual value signal (U) 0 – 10 V DC or
2 – 10 V DC
B+
Modbus RTU
A-
Wiring
Connection diagrams > Terminals
Control component Compact XM0 • XS0 for VAV terminal unit TVE
18