Elektor 1SD 510, Инструкция по эксплуатации и сборке

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14
U
B
0
f
B
Prohibited
range
Operating and assembly instructions SD www.elektror.com
0241
18 07.16/06
EN
frequency converter during FU applications, the appliance
must not be restarted until the problem has been identi fi ed
and eliminated.
If the side channel blower cannot be operated over the whole
range of the characteristic curve, the motor may overload
if the system resistance is too high (excessive current con-
sumption). If the possibility of overload due to system resist-
ance cannot be excluded, a pressure limiting valve must be
provided on the intake or pressure side.
The side channel blower must not be subjected to vibration
or impact loads.
4.2 Frequency converter operation
A frequency converter is used, allowing a wide range of
speed adjustments. There is only a small, load-related differ-
ence in rpm between idle state and the max. load of the side
channel blowers.
To ensure trouble-free operation of the side channel
blowers, it is important that the converter meet the fol-
lowing requirements:
• Converter output equal to or greater than motor power
output *)
• Converter current equal to or greater than motor current *)
• Converter output voltage equal to rated motor voltage
• The pulse frequency of the converter should be 8 kHz,
since a lower pulse frequency can cause very noisy motor
operation.
• The converter should have a connection for a tempera-
ture sensor (PTC resistor sensor) or a temperature switch
(normally-closed contact)
*) Refer to the rating plate for data
The motor can be operated in a delta or star-point con
fi gu-
ration, depending on the input voltage of the converter.
The following U/f assignments must be con fi gured at the
converter.
f
B
and U
B
= refer to rating plate
If this is ignored, the motor current will increase disproportion-
ately and the drive motor will fail to achieve its rated speed.
Warning!
To avoid personal damage, destruction of the
side channel blower or motor overload, a higher
frequency (speed) than the frequency (f
B
) speci-
fi ed on the rating plate must never be set on the
converter otherwise the motor may be overloaded
or the blower destroyed due to the increased
speed. The temperature sensors are connected to
the corresponding converter inputs to protective
the drive motor. Single-phase alternating current
motors are not suitable for converter operation.
It is absolutely essential that you observe the
installation and safety instructions described in
the respective operating or application manuals
provided by the frequency converter supplier to
guarantee a safe and trouble-free operation.
It is also important to note that special ambient
conditions may lead to a high level of contamina-
tion of the cooling fi ns with the FUK devices. The
frequency converter switches off if the cool-
ing output on the cooling fi ns is not adequate.
Regular cleaning is required for devices in these
environments.
Note!
The following times apply for the respective
device motor output class (see rating plate) with
run-up/expiry as well as speed changes in order
to avoid high component loads and faults in the
converter operation:
Device motor output
Run-up time
[s]
Expiry time
[s]
Motor output < 0.25 kW 5 10
0.25 kW < Motor output
<=3.0 kW
10 20
3.1 kW < Motor output
<= 7.5 kW
20 40
7,6 kW < Motor output
<= 11.0 kW
30 60
11,1 kW < Motor output
<= 30.0 kW
30 100
A uniform run-up and expiry must be guaranteed within the
run-up and expiry times.
No speed changes must occur during operation that exceed
the speed change during run-up and expiry.
Protection by residual-current-operated circuit breaker
(FI circuit-breaker):
IGBT frequency converters produce discharge currents of
>=3.5 mA due to their design principle. These discharge cur-
rents can lead to unwanted tripping in systems protected by
a 30 mA-FI circuit-breaker.
If a fault occurs, fault currents can also discharge through the
PE conductor as direct current. If protection is needed on the
supply side by means of an FI circuit-breaker, then an ACDC
sensitive (type B) FI circuit-breaker must be used. Use of an
FI circuit-breaker other than type B can cause death or seri-
ous injury if a fault occurs.
To meet the EN 61800-5-1 standard, the PE conductor must
be duplexed and routed through separate terminals or have
a cross-section of at least 10 mm² Cu.
Operation and connection to public grids:
See 3.4
4.3 Hydraulic Motor Operation
The run-up and expiry times as well as the speed changes
speci fi ed in 4.2 should be noted when operating with hydrau-
lic motors. Free-running hydraulic motors should be used to
guarantee a smooth run on.
5 INSTRUCTIONS FOR MAINTENANCE
Wear parts are subject to the recommended maintenance in-
tervals and are an element of valid warranty claims (see 5.1
to 5.6). The service life of wearing parts (ball bearings and
fi lters) depends on the operating hours, the load and other
in fl uences, such as temperature, etc.
Maintenance and servicing may only be performed by per-
sons with the necessary expertise and regular training. In ad-
dition to the appliance’s operating instructions and the regu-
lations and recommendations for the system as a whole, the