13
W2
U2
V2
U1
V1
W1
W2
U2
V2
U1
V1
W1
(L3) (L1)
(L3) (L1)
L1 L2 L3
L1 L2 L3
EN
Operating and assembly instructions S-HP
www.elektror.com
9016325 01.20/07
Minimum distance to the blower cover
(for the intake of cooling air)
Driving power
Minimum distance
to the blower cover
[mm]
[inches]
≤
1.5 kW
34
1.34
> 1.5 kW
53
2.09
3.3 Electrical Connection
Note!
The work described in this section may only be
performed by a quali
fi
ed electrician. Connect the
appliance as per the circuit diagram in the termi-
nal box and in accordance with the relevant local
requirements.
• Where appliances are frequency-converter-operated, the
existing temperature sensor (PTC resistor sensor) or tem-
perature switch (normally closed contact) must be connect-
ed to the converter and evaluated.
• Check that the mains voltage matches the ratings on the
nameplate.
• The safety earth terminal can be found in the terminal box.
Note!
The following information should also be ob-
served when operating the drive motor with a
frequency converter:
• Only motors must be used on the frequency
converter that are marked on the rating plate with
the option “/FU”, “suitable for use with a frequen-
cy converter” or that were ordered and con
fi
rmed
as “suitable for use with a frequency converter”.
• The frequency converter supply voltage must
only be a maximum of 400 V without the motor
fi
l-
ter. Appropriate measures such as a motor
fi
lter to
protect the motor must be installed on the motor
terminals with higher frequency converter supply
voltages, longer lines and/or if the pulse voltages
are exceeded (max. 1000 Vpk for drive motors up
to 0.75 kW, maximum 1300 Vpk for drive motors
larger than 0.75 kW) Please contact the converter
supplier in this case. If a motor
fi
lter is included
in the delivery, this must be installed between
the converter and the motor. Please ensure that
there is su
ffi
cient space in the switch cabinet and
take into account the installation and assembly
requirements in the operating instructions of the
frequency converter/motor
fi
lter manufacturer.
• The maximum cable length between the mo-
tor and switch cabinet frequency converter (e.g.
Lenze Vector, Omron MX2 and Omron RX) must
not exceed 20 m. Maximum cable lengths of up to
3 m are permitted with Kostal INVEOR frequency
converters installed close to the motor and up to
10 m with Lenze MOTEC frequency converters.
Further information on wall mounting close to the
motor can be found in the original operating and
assembly instructions of the respective frequen-
cy converter manufacturer. The electrical con-
necting cables between the motor and frequency
converter in the above cases must be suitable
shielded cables, laid using the shortest route and
without clamping and plug-in connections and
connected correctly at both sides.
• The shielding braid in the connecting cables
must be connected fully, continuously and on
both sides, i.e. to the frequency converter and
motor, and at low resistance and permanently to
protective earthing systems or the main earthing
bus bar. Suitable EMC cable glands must be used
for this on the motor side and also on the INVEOR
wall mounting plate, if necessary.
• It is important to ensure that the solid con-
nection of the device to the protective earthing
system or several suitable earthing lines is at low
resistance and permanent for blowers installed
with electrical insulation (e.g. through vibration
dampers, compensators, insulated pipes, etc.) for
frequency converter operation.
For further information about EMC compliant installation and
assembly, refer to the Operating and Assembly Instructions
issued by the frequency converter manufacturer.
3.3.1 Con
fi
guration for three-phase current blowers
Warning!
Danger due to loose or improperly tightened
connections!
Improperly tightened and loose connections
cause electric shocks,
fi
res, property damage and
personal injuries!
Check for loose connections and tighten in
accordance with the tightening torques in the
following table.
circuit
Y circuit
(low voltage)
(high voltage)
Threaded bolt
Tightening torque
M4
1,2 Nm
M5
2,0 Nm
M6
3,0 Nm
M8
6,0 Nm
Checking the direction of rotation
Brie
fl
y switch on the blower. The running direction of the im-
peller should correspond to the direction arrow on the hous-
ing. If the impeller rotates in the wrong direction, then inter-
change L1 and L3.
3.4 Declaration concerning the EMC Directive (2014/30/EU)
Our blowers are components that are designed to be in-
stalled in other machines or systems by quali
fi
ed personnel,
i.e. not intended for consumers. The manufacturer of the
fi
nal system/machine must guarantee/con
fi
rm that the
fi
nal
system/machine complies with the EMC Directive.
Blowers with frequency converter operation (FU):
Prior to the start-up and during operation of the device on a
frequency converter it is essential that the EMC instructions
from the frequency converter manufacturer and the informa-
tion in the Elektror operating and assembly instructions are
observed in order to meet the requirements of the EC “Elec-
tromagnetic Compatibility” Directive 2014/30/EU.
If the device is delivered together with an Elektror switch cab-
inet frequency converter package, it is possible to comply
with the EN61800-3 category C2 (Industrial environments),
