System Description; User Interface - Xylem LOWARA ResiBoost MMW Manuel D'installation, D'utilisation Et D'entretien

en - Original instructions
For models MMA and
MTA, see Figure 10 on
page 253 and Figure 15
on page 258.
4.4.3 Analogue pressure sensor
An analogue sensor with 4-20mA output is required
to monitor the pressure in the system constantly.
Converter models MMA and MTA require an external
sensor. See Figure 15 on page 258 for connections.
A 2–meter power cable and a 0-16bar sensor are
provided as standard.
The pressure sensor for models MMW and MTW is
inside the converter.
Be sure the following are adhered to:
32
tact must be normal-
ly open when an
alarm is triggered.
Suitable cable 2 x
2
(0.75 to 1.5) mm .
3. Insert the cable in
the cable gland in
the cover, see Figure
12 on page 255.
4. Check that all the ca-
bles are secure and
close the FRONT
cover, making sure
not to crush the ca-
bles between the
cover and the con-
verter. Unfasten the
6 screws.
1. Unfasten the 8
screws and open the
FRONT cable mak-
ing sure not to dam-
age the connecting
cable of the display
and the connector.
2. Insert the cable of
the pressure sensor
in the relative cable
gland, see
Figure 15
on page 258 if the
cable is missing or
needs to be re-
placed.
3. If required, connect
the cable of the level
sensor to the digital
input to prevent dry
running of the pump.
The electrical con-
tact must be normal-
ly open when an
alarm is triggered,
see Figure 15 on
page 258. Suitable
cable 2 x (0.75 to
2
1.5) mm . Check that
all the cables are se-
cured, including the
connecting cable of
the display, and
close the FRONT
cover and fasten the
8 screws.
• Use cables resistant to heat up to +70°C (158°F)
for all the connections.
• The wires that are connected to the power termi-
nals, the pressure sensor (MMA, MTA), and the
contact for protection against dry running must
be separate and have reinforced insulation.
• Be careful not to drop bits of wire or sheathing or
other foreign materials into the converter when
making the electrical connections. Take all due
care to avoid damaging the internal parts when
removing anything inside.
4.4.4 Applications with very long cables
If the cable between the converter and the motor is
more than 30 meters in length, it is ADVISABLE to
install a dV/dt or sinusoidal filter.
The filters extend the life-span of the motor.
Inductance on the side of the motor (dV/dt filter) re-
duces the dv/dt at the rising edge and the phases,
leveling the waveform of the current.
The sinusoidal filter makes both the waveform of the
current and the waveform of the voltage at the out-
put of the frequency converters sinusoidal.
Be sure that the following are adhered to:
• Refer to figures Figure 16
ure 18 on page 261.
• Install the filter between the converter and the
motor.
• Install the filter as near as possible to the output
of the converter, at a max distance of L1max.
• IP64 grade filters can be installed outdoors but it
is advisable to ensure protection against direct
sunlight.
• Refer to Table 17 on page 259 and
page 261for the maximum lengths of the power
cable of the H07RNF motor.

5 System Description

5.1 User interface

The list describes the parts in
and Figure 2 on page 250.
Num- Description
ber
1 Button for running the electric pump in
MANUAL mode. Press and hold the but-
ton to run the electric pump.
2 Button for switching between AUTOMATIC
and MANUAL mode.
3 Button for accessing the MENU BASE
(MB) parameters in MANUAL mode,
SIC MENU (MB) parameters
4 and 5 Buttons for:
• Decreasing or increasing the value of a
parameter selected in MANUAL mode.
• Viewing the operating parameters in
AUTOMATIC mode,
eters on page 33.
6 Button for selecting parameters in AUTO-
MATIC mode. In MANUAL mode, this is
an alarm reset button.
on page 259 and Fig-
Table 19 on
Figure 1 on page 249
BA-
on page 35.
Operating param-