Connection Of The Alarm Outputs; Operation With Pressure Sensor (Recommended Choice); Connection Of The Pressure Sensor; Figure 44: Inputs - DAB E.Box Plus Instructions Pour L'installation Et La Maintenance

Alarm, Pressure in system too high: the pressure switch must be installed in the delivery of the set. The normally closed contact of
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the pressure switch must be connected to terminal R of the E.box. The pressure switch must be set at the maximum pressure that can
be reached by the system in safe conditions. 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 with thermal
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protection, this protection can be connected to the terminals KK. If the protection is not present in the motor, the terminals must be
jumpered. The terminals are shown in Figure 45.
If the alarms are not used, they must be jumpered. So jumpers must be fitted on the inputs of the contacts R, KK1 and KK2.
8.4

Connection of the alarm outputs

If alarms occur, this is indicated by the E.box 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 follows: Q1 closes
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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.
8.5

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.
8.6

Connection of the pressure sensor

The pressure sensor must be connected to the terminal board, see Figure 46, according to the following diagram:
ENGLISH

Figure 44: Inputs

Figure 45: Thermal protection inputs KK

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