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Wiring
Fan motors
EC motor single speed
Electrical Equipment Wiring
Wiring of Drives and Internal M&C Elements
If the delivery includes the integrated control unit, all the
wiring (connections of motors, internal damper drives and mea-
suring and control elements, hereinafter M&C) is performed by
the manufacturer, i.e., connected to the control unit inside the
switchboard box where all the connecting terminals are also
situated.
If the compact unit includes an external control unit which is
a part of the delivery, the entire internal wiring is prepared and
connected to the prepared connecting terminals in the terminal
box inside the unit. All the connections between the control unit
and internal M&C elements are performed through the com-
mon grommet and terminal inside the terminal box.
If the control system is not included in the specification of
the CAKE compact unit order, only internal protective interco-
nnections are performed and all the internal wiring, including
M&C elements, will be performed on the site.
Wiring of External M&C Elements
External measuring and control elements, not firmly attached
to the air-handling unit, are installed on site and connected to:
a prepared terminal box on the top of the unit casing (CAKE
version with an integrated control unit);
a terminal box (CAKE version with an external control unit
included in the delivery)
Figure 13 – Assembly of the round output
L – power supply
N – neutral conductor
PE – safety conductor
11, 14 – fan summary fault
(contact load 250 V AC, 2 A)
E1 – 0–10 V DC input
D1 – digital input (on/off)
10 V – 10 V DC voltage source
GND – ground
CAKE Air-handling units
Three-phase EC Motor
Regeneration Exchanger
Control unit with step motor
Main Supply Cable Connection
If the device is equipped with the integrated control unit, the
supply cable is connected to the main terminal box situated on
the top of the compact air-handling unit casing.
If an external control unit is used, the supply cable is conne-
cted to the terminal of the main switch situated in the control
unit.
The wiring and installation of the M&C system's external au-
xiliary elements must be performed by qualified professionals
authorized to perform wiring of the given type of device. The
wiring must be performed in accordance with the directives
and standards of the country of installation, and in accordance
with the Installation and Operating Instructions of individual
pieces of equipment (frequency converters, pressure and
temperature sensors, etc.). Conformity of the power supply
voltage, frequency and protection with the data in the technical
documentation and on the type plate of the connected device
and cross-section of the connecting cables must be checked
before connecting the electrical equipment to the power supp-
ly. Before putting the air-handling unit into operation, a wiring
inspection must be performed.
L1, L2, L3 – power supply
PE – safety conductor
11, 14 – fan summary fault
(contact load 250 V AC, 2 A)
250 V AC, 2 A)
E1 – 0–10 V DC input
D1 – digital input (on/off)
10 V – 10 V DC voltage source
GND – ground
L – power supply
N – neutral conductor
PE – safety conductor
13, 15 – fan summary fault
(contact load 250 V AC, 2 A)
2 – 0–10 V DC(+) input
3 – 0–10 V DC(–) input
9
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