Ms: Measurement System; Sx: Setpoint Massimo; Technical Assistance Menu; Tb: Water Failure Block Time - DAB ACTIVE DRIVER PLUS M/T 1.0 Installations- Und Wartungsanleitungen

PR Value
0
1
2
3
The setpoint pressure is independent of the type of remote pressure sensor selected.

6.5.9 MS: Measurement system

This sets the measurement unit system; either international or Imperial The values displayed are shown in Table 20.

6.5.10 SX: Setpoint massimo

Sets the maximum value that any one of the setpoints SP, P1, P2, P3 can have (P2 and P3 are available only on type
MT and T/T inverters).

6.6 Technical Assistance Menu

From the main menu, press and hold "MODE" & "SET" & "+" simultaneously until "TB" appears on display (or use the
buttons + or – in the selection menu). This menu enables the display and modification of various configuration
parameters. The MODE button enables the user to scroll through the menu pages, while buttons + and – enable
respectively to increase and decrease the value of the parameter concerned. To exit the current menu and return to
the main menu, press SET.

6.6.1 TB: Water failure block time

Entry of a water failure block delay time enables selection of the time (in seconds) taken by the inverter to notify of low
water levels on the electric pump.
Modifications to this parameter may be useful if a known delay exists between the moment in which the pump is
activated and the actual moment of supply. One example is that of a system where the electric pump intake line is
particularly long and is subject to small leaks. In this case it may occur that the pipeline empties, and even if the water
supply is regular, the electric pump takes some time to reload, deliver flow and pressurise the system.

6.6.2 T1: Shutdown time after low pressure signal

This sets the inverter shutdown time starting from reception of the low pressure signal (see Impostazione della
rilevazione di bassa pressione par. 6.6.15.5). The low pressure signal may be received on any of the 3 inputs, by
suitably configuring the input (Setup degli ingressi digitali ausiliari IN1, IN2, IN3 par. 6.6.15).
T1 can be set between 0 and 12 s. The default setting is 2 s.

6.6.3 T2: Shutdown delay

This sets the delay after which the inverter shuts down after shutdown conditions have been reached: system
pressure and flow at minimum values.
T2 can be set between 2 and 120 s. The default setting is 10 s.

6.6.4 GP: Proportional gain coefficient

The proportional gain should generally be increased for elastic systems (wide and PVC pipelines) and reduced in the
case of rigid systems (narrow and steel pipelines).
To maintain constant system pressure, the inverter performs a PI check on the measured pressure error. On the basis
of this error, the inverter calculates the power to supply to the electric pump. The behaviour of this check depends on
the set parameters GP and GI. To meet the different requirements of the various types of hydraulic systems where the
system may operate, the inverter enables the selection of parameters that are different from the default settings. On
virtually all systems, the factory setting of parameters GP and GI are optimal. However, in the event of problems
with regulation, these settings may be modified as required.
Setting of the remote pressure sensor
Indication on display
Absent
Dab 16 bar
503 16 bar
501 R 25 bar

Table 19: Setting of the remote pressure sensor

Units of measurement displayed
International unit
Value
of measurement
Restart
Temperature

Table 20: Unit of measurement system

ENGLISH
Full scale [bar]
16
16
25
Imperial unit of
measurement
bar psi
°C
80
Fondo scala [psi]
232
232
363
°F