Herz HD140 Betriebsanleitung Seite 12

Note!
For operation of the drive motor with a frequency
converter, the following points should also be
noted:
Motors may only be operated on a

frequency converter if they have "/FU"
(which denotes "frequency converter
compatible") marked on the nameplate,
or if
"frequency
motors and confirmed.
The frequency converter supply voltage

must only be a maximum of 400 V
without the motor filter. Appropriate
measures, such as a motor filter to
protect the motor, must be installed on
the motor terminals with longer cables,
higher
voltages 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
supplier in this case. If a motor filter is
included in the delivery, this must be
installed between the converter and the
motor. Please ensure that there is
sufficient space in the switch cabinet
and take into account the installation and
assembly requirements in the operating
instructions
converter/motor filter manufacturer.
The wire running between the motor and

the frequency converter must not exceed
a length of 20 m, configured as a
suitable, shielded cable and laid by as
direct a route as possible, without any
additional plug/clamp connections.
The braided screen in the connecting

cable must cover the full length of the
cable on both sides, i.e. be connected to
the earthing system at the frequency
converter and to the motor using a low
electrical resistance. For this purpose,
suitable EMC cable couplings must be
used on the motor side. They must
contact the cable shield around its full
circumference
resistance.
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 Configuration for three-phase current side channel
blowers
Warning!
Danger due to lose 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.
12
they have been ordered
converter compatible"
frequency converter
contact the converter
of the frequency
and have a
Technische Änderungen vorbehalten / Technical changes reserved
as
(low voltage)
Threaded bolt
Checking the direction of rotation
Switch on the side channel blower. The running direction of the
supply
impeller should correspond to the direction arrow on the housing.
The direction of the air flow must also match the directional
arrows on the silencer housing. If the impeller rotates in the
wrong direction, then interchange L1 and L3.
Star-delta start-up
Motors with an output above 3.0 kW are provided at the supply
mains for star-delta start-up. For direct on-line starting (high
short circuit current at the instant the motor is energised), please
contact your local utility for details of conditions.
3.3.2 Configuration for single-phase a.c. side channel
blowers
Clockwise rotation
3.3.3 Special confi gurations and additional clamps
Terminal diagrams can be found in the motor terminal box for
voltage interchangeable motors, pole-changeable motors, FU
motors and other special confi gurations of threephase a.c. and
a.c. motors. This also applies to the optional thermal winding
protection and the space heater.
3.3.4 Confi guration for units with attached frequency
low
converter
The mains connection with earthing conductor connection and
potential equalisation must be carried out in a professional
manner in accordance with the specifi cations in the enclosed
frequency converter assembly instructions.
3.4 Declaration concerning the EMC Directive (2014/30/EU)
Our side channel blowers are components that are designed to
be installed in other machines or systems by qualified personnel,
i.e. not intended for consumers. The manufacturer of the final
system/machine
system/machine complies with the EMC Directive.
Side channel blowers with mains operation:
With mains operation to a sinusoidal AC voltage, the
asynchronous motors with a squirrel-cage rotor that are built into
the devices meet the requirements of the EC "Electromagnetic
Compatibility" Directive 2014/30/EU, taking into account the
standards EN 61000-6-4 (Emitted interference in industrial
environments) and EN 61000-6-3 (Emitted interference in
residential environments).
-circuit
Tightening torque
M4
M5
M6
M8
Anticlockwise rotation
must guarantee/confi
BA HD140 V30 R20 07_2021 DE-GB.doc
Y-circuit
(high voltage)
1,2 Nm
2,0 Nm
3,0 Nm
6,0 Nm
rm that the final