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5.4
Electrical connection of the pumps
Connection of single-phase pumps with internal capacitor: see Fig.1.
The pumps must be connected to the two contactors as shown in the figure. The neutral wire must
be connected to the terminal N, the phase wire must be connected to the terminal L1.
Connection of three-phase pumps: see Fig.1.
The pumps must be connected to the two contactors as shown in the figure. The correct sequence
of phases U, V and W must be respected so that they turn in the correct direction.
Connection of single-phase pumps with external capacitor: see Fig.1.
The pumps with an external capacitor must be connected to the two contactors as shown in the
figure. Particular care must be taken to observe the correspondence between the screenprinting
and the names of the pump wires. The pump cable marked C should be connected to terminal 2T1.
The same should be done for cables A to terminal 4T2 and P to terminal 6T3.
The pump capacitor can be placed inside the NGPANEL, on the metal bracket provided.
The capacitors should be connected where shown in the figure. Take care because in the NGPANEL they
share the same contactor as the pump.
See Fig.1 and Fig. 2
Power supply electrical connection: see Fig.3.
In the case of single-phase power supply use terminals L1 and N. In the case of three phase power
supply use terminals L1, L2, N. See Fig.3.
6
FILLING FUNCTION
The NGPANEL can be used for making filling systems. As control inputs, floats, level probes or a depth sensor
can be used. For the general diagram, see Fig.4.
6.1
Electrical connections of pump and supply
6.2
Connect the supply line and the pumps as described in chapter 5.4 Electrical connection of the
6.3
Control inputs
As inputs the NGPANEL accepts either floats, level probes or depth sensors. Particular care must be taken:
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Floats and level probes cannot be used at the same time.
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Level probes can only be used with clear, clean water.
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The maximum level and minimum level alarms can be generated by floats or by level probes, or, if the depth
sensor is used, by thresholds of the value read by the sensor itself.
6.4
Connection of additional protections: overflow, water lack, motor thermal protection
It is possible, but not necessary, to use the alarm inputs to the NGPANEL so that the pumps stop in the case of
reaching the maximum level, or too high motor temperature. In the case of an alarm, the pumps stop, the buzzer
sounds, the corresponding alarm outputs are activated.
If the minimum level is reached, the pumps are activated. The buzzer sounds, the
corresponding alarm outputs are activated (OUT3)
In all cases, the type of alarm is indicated on the display.
When the alarm conditions no longer exist, the NGPANEL resumes normal operation.
Содержание NGPANEL
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