General
Active Driver is an innovative integrated system for controlling variable-speed electric pumps by keeping
pressure constant at variable flow rates. The user-friendly interface makes it quick and easy to calibrate
pressure set points and view settings and error messages.
Active Driver comprises:
• an inverter
• a pressure sensor
• a flow sensor
It has 3 inputs and 2 outputs so as to be able to realise certain interface solutions with more complex
installations.
Cooling: water flow through the whole device and cools down the components.
Operation logic:
The parallel installation operation logic is that of supplying Constant Pressure to the varying flow rate of the
water required by the system: this is made possible by the Active Driver which is applied to each pump.
Each pump should ideally be set at the same desired pressure value.
The first pump is started when the pressure in the system drops for the first time, due to the drawing of water. The
second and/or third pump start in cascade as the flow rate increases. As the flow rate of the water decreases, the
pumps turn off in reverse order to which they were started.
Thanks to an alternating system in which the pumps are started, the second pump is started when the pressure
in the system drops for a second time. The first and/or third pump start in cascade as the flow rate increases. As
the flow rate of the water decreases, the pumps turn off in reverse order to which they were started.
Advantages of Active Driver:
• enhanced comfort
• energy saving
• silent-running
• compact
• overpressures eliminated
• extended pump lifetime
• trouble-free installation
• compatible with a large number of pump types
Protections :
Active Driver features a malfunction protection system. Any fault is indicated on the display and, depending
on the type of error, the pump may switch off. The application provides:
• dry running
• overload
• excess temperature of the electronics
• abnormal feeding voltages (excluding A.D. M/M and A.D. M/T 1.0)
• direct short-circuit between the output phases
Digital indications
- Frequency (HZ)
- Pressure (bar)
- Absorbed current (A)
- Αlarm
Signals
- Imput : pump's stop, pressure switch / float
- Output : two free-voltage contacts alarm/stop and pump's running
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