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Beschikbare talen
Beschikbare talen
Alarm, Pressure in system too high: the pressure switch must be installed in the delivery of the set. The normally closed
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contact of the pressure switch must be connected to terminal R of the Ebox. The pressure switch must be set at the maximum
pressure that can be reached by the system. If it is not used, the contact is jumpered.
Alarm, Pressure in system too low: the pressure switch can be installed either on suction or on delivery depending on the
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type of system. The pressure switch must be connected to terminal N of the Ebox, it must be set at the minimum pressure
necessary for the system to work correctly. The contact must open if the pressure falls below the minimum value. This
contact may be used either to prevent blocks for lack of water or to discover burst pipes. A level probe or float can also be
connected to this alarm to check the state of a tank or well. If it is not used, the contact is jumpered.
Motor thermal protection: the device has an input for the thermal protection of each motor. If the motor used is provided
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with thermal protection, this protection can be connected to the terminals KK shown in Figure 9. If there is no protection in
the motor, the terminals must be jumpered.
If the alarms are not used, the corresponding inputs must be jumpered. So jumpers must be fitted on the inputs of the contacts N, R,
KK1 and KK2. These jumpers are provided with the E-box.
5.4
Connection of the alarm outputs
If alarms occur, this is indicated by the Ebox in three ways:
With the leds on the front panel, which give a number of blinks depending on the error.
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With the outputs Q1, Q2, Q3 which short circuit as specified in Table 17. The operating logic of the alarms is as
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follows: Q1 closes following malfunctions of pump 1, Q2 of pump 2 and Q3 for general errors.
With the indications on the display (if present). In this case it is also possible to see the alarm log.
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If the panel is not fed, Q1, Q2 and Q3 are closed, so they give an alarm signal.
5.5
Operation with pressure sensor (recommended choice)
It is recommended to use this operating mode, rather than pressure switches, because it allows greater flexibility in managing the
system, the pressure distributed by the set can be seen, and installation is easier. In this case it will be possible to set the Set Point
pressure and the pressure differential for the restarting and stopping of the pumps.
5.6
Connection of the pressure sensor
The pressure sensor must be connected to the terminal board, see Figure 10 Pressure sensor connection, according to the following
diagram:
ENGLISH
Figure 8: Inputs and outputs
Figure 9: Thermal protection inputs KK
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