Connection Of The Alarm Outputs; Operation With Pressure Sensor (Recommended Choice); Connection Of The Pressure Sensor; Operation With Pressure Switches - DAB E.Box Plus Instrucciones De Instalación Y Mantenimiento

5.4 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.

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 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.
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:

5.7 Operation with pressure switches

If you decide to operate the booster set with pressure switches, they must be connected on the delivery of the booster
set. The pressure switches to be used are B and C and they are connected as indicated in the next chapter.
Connection of pressure switches
The pressure switches must be connected to the contacts B and C of the terminal board shown in Figure 11.
ENGLISH

Figure 9: Thermal protection inputs KK

78
Pressure sensor connections
4..20mA
Terminal Cable to be connected
11 - OUT/GND (brown)
12 +VCC (white)

Figure 10: Pressure sensor connection 4..20Ma