•
Metal screwed-connections are not permitted in plastic housing parts because there is no
potential equalization.
•
Never clean electrical equipment with water or similar liquids.
Information
The respective connections are represented in the enclosure of this Operating Instructions (see
connection diagram)!
5.2
EMC-compatible installation
5.2.1
Motor cable
The applicable standard for interference emissions is EN 61000-6-3. Compliance with this standard is
achieved through the use of an unscreened motor feed cable.
5.2.2
Control cables
Pay attention to suf
fi
cient distance from powerlines and motor wires to prevent interferences. The
control cable may not be longer than 30 m. Screened control cables must be used when the cable
length is longer than 20 m. When using a shielded cable connect the shielding to one side only, i.e.
only to the control unit with the protective ground (keep cable short and with as little inductance as
possible!).
5.2.3
Harmonics current for devices
≤
16 A
According to EN 61000-3-2 these devices are to be classi
fi
ed as
“
professional
”
devices.
Connection to a low voltage supply (public networks) is allowed insofar as this has been clari
fi
ed with
the respective energy supply company responsible.
Note: up to a maximum current of approx. 4 A, the limits are adhered to with no restrictions.
Exception for Germany: An energy provider follows the technical connection conditions of the
TAB2007, in which case the use of phase angle controlled devices up to a rating of 3.4 kVA per phase
is allowed.
5.3
Mains connection
The mains connection is made at the terminals: PE, L1 and N. In this regard, it is essential to ensure
that the mains voltage lies within the allowable tolerance speci
fi
cations (see technical data and rating
plate af
fi
xed to the side).
Danger due to electric current
The mains voltage must comply with the DIN EN 50160 quality characteristics and the de
fi
ned
standard voltages in IEC 60038!
5.4
Motor connection
The motor is connected at terminals U1 and U2. Several motors can be connected to the device.
Attention!
The maximum total control current (speci
fi
ed for electronic voltage regulation) for all motors may not
exceed the device
’
s rated current.
If the maximum control current for electronic voltage regulation is not known, a supplementary 20 % of
the rated motor current must be allowed for.
When controlling motors from other manufacturers, the controllability and the maximum current for
electronic voltage regulation should be requested from the manufacturer.
Information
•
It is recommended that a separate motor protection unit be foreseen for each fan.
•
For motors with thermistors
“
TB
”
e.g. type S-ET10.
Operating Instructions
Acontrol
–
model series PXET6Q / PXET10Q
Electrical installation
L-BAL-E016-GB 1925 Index 007
Part.-No.
9/32
