DOMESTIC PUMPS SETS WITH ACTIVE DRIVER
Constant pressure set
Constant pressure – Low noise operation – Low running costs – Reduced water consumption – More compact (no need for expansion vessels) – Reduced maintenance – Protected against dry run conditions.
Pump sets equipped with Active Driver are designed and built to meet the constant pressure requirements imposed by modern water distribution system technology.
Constant pressure control is used in an increasing number of applications in the most diverse range of sectors: Water pipelines - Irrigation - Industry - Hotels - Residential building - Spa centres. The basic principles that guided our engineers in developing these pump sets were simplicity, flexibility andreliability.
SHORT INTRODUCTION TO Active Driver
The Active Driver module is a comprehensive device that includes water pipeline connections, a pressure sensor, a flow sensor, and an electronic inverter. When applied to the discharge line of each electric pump, Active Driver controls the speed of the pump to which it is connected in such a way as to ensure constant pressure irrespective of variations in the water flow rate demand. The water that flows though Active Driver’s connections also helps to dissipate the heat produced by the internal electronic components.
As soon as the system pressure drops due to a water demand, just one pump will run in order to meet the flow rate demanded. Starting of the second and third pump occurs in a cascade sequence once the first pump has reached its maximum rotation speed. Pump pressure can be user adjusted by means of the Active Driver + and keys (usually all pumps are set to the same pressure value).
The pumps are stopped automatically in the following situations: pump current surge dry running low power supply voltage surpassing of an adjustable pressure set-point value overheating of Active Driver electronics.
Sets with two pumps and with three pumpsequipped with Active Driver are supplied complete with a protection control unit containing thermal magnetic cut-outs and the power line input terminals.
FUNCTIONS DISPLAYED on Active Driver
Pump operating frequency (Hz)
Instantaneous pressure (bar)
Pump current draw (ampere)
Active Driver EXTERNAL CONNECTIONS (models M/T 2.2
T/T 3.0 - T/T 5.5 only)
Inputs: pump disable, pressure switch / float switch to protect against dry running, second pressure Set point.
Outputs: two voltage-free contacts for alarm / stop signalling, pump running