OPERATION
Is a wall-mounted automatic control device designed for the automation of a two single or three-phase pump group, with an
electronic system managed by a software responding to the rigorous requirements of efficiency and safety of the most
important pump manufacturers. It includes two frequency inverters that regulate the speed of each pump in order to keep
constant the pressure independently of the flow given. The system will work with both pumps in alternation and cascade.
The system incorporates an LCD screen where the parameters configuration is very
and intuitive. Once the configuration
easy
parameters are set, the
manages the start-up of the pumps and the frequency inverters. It assures a constant pressure
device
and an important costs reduction because at any time the control will feed the system with the right and necessary output,
obtaining a maximum energetic efficiency. In order to establish the optimal pressure in the installation is suitable to consider
following criteria:
Hm:
Max. water column height in m. It depends on the number of floors and it corresponds to the height from the pump to the
last floor. Every 10 m of height corresponds approximately to 1 bar (0.98) bar.
Pw:
Available minimum pressure in last floor (usually 1.5 bar).
Pc:
Pressure drop. It can be considered with a simplified criteria as 0.033 bar/m.
Prmin:
Minimum resultant pressure. It is the sum of the previous pressures and it will be the operating pressure of the pump.
Example for a 5 floors building (15 m) with pump placed at level 0:
Hm =15 m 1.5 bar Pw = 1,5 bar Pc=15 x 0,033 bar 0,5 bar Prmin = 1,5 + 1,5 + 0,5 = 3,5 bar
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MAIN CHARACTERISTICS
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2 frequency inverters for the pumps control.
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Wall-mounted
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Control and safety system against overload.
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Control and safety system against dry run.
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ART
function (Automatic Reset Test). If the device has been stopped due to the action of the safety system against over-
current, the
tries to connect the pump, with a programmed periodicity because the water supply could have been
ART
restored
n
Automatic restore system after an interruption of power supply. System is activated in AUTOMATIC mode keeping the
configuration parameters (see “CONFIGURATION” chapter).
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STC function ( Smart Temperature Control ). When the temperature of the electronic board reaches 85ºC, the spin
frequency of the pump decreases automatically, decreasing that way the heat generation but keeping the water supply.
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External pressure transducer (4.20 mA) under demand.
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External programable input with three options: Level, ON/OFF and Second pressure.
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Control panel (Fig.1):
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LCD screen, for alarm menu with permanent pressure indication.
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START/STOP push-buttons to act by hand each one of the pumps
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ENTER pushbutton to save data in memory.
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pushbutton to
ON/OFF
change rom AUTOMATIC to MANUAL mode or vice versa.
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MENU push-button
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Keyboard for the access to programming menu.
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Digital gauge.
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Register of operational controls: infomation about operating hours, counter of starts, counter of connections to the power
supply.
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Register of alarms: information about type and number of alarms since the starting up of the device.
CLASSIFICATION AND TYPE
According to EN: 60730-1 and EN:60730-2-6 this unit is a control electronic device for pressure groups, with flexible cable for
permanent assembly type Y, action type 1Y (transistor output). Operating value: flow 2.5 l/min. Degree of contamination 2
(clean environment). Software Class A.
Impulse rating voltage: cat II / 2500V. Applied temperature for the ball pressure test: enclosure (75ºC) and PCB (125ºC).
Control circuit for AC motor with cos fi 0,6 (single-phase) and cos fi 0,75 (3-phase).
≥
≥
According to EN 61800-3 this device is C2 class.
BEFORE INSTALLATION AND USE READ THE FOLLOWING INSTRUCTIONS CAREFULLY. THE MANUFACTURER DECLINES ALL RESPONSABILITY IN THE
EVENT OF ACCIDENT OR DAMAGE DUE TO NEGLIGENCE OR FAILURE TO OBSERVE THE INSTRUCTIONS DESCRIBED IN THIS MANUAL OR IN
CONDITIONS THAT DIFFER FROM THOSE INDICATED ON THE DEVICE.
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