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2

GENERAL

Read carefully the instructions before installing this unit. Verify the tech-

nical characteristics of the motor in order to assure the compatibility with 

the device.

DESCRIPTION (diagram A)

SWITCHMATIC 2T is an electronic pressure switch with integrated digital 

manometer. It manages the start and stop of a three-phase pump up to 

4kW (5,5 HP). Cut-in and cut-out pressures are easily adjustable through 

the users control panel.

Wiring is analogous to the traditional electromechanical switch.

It can operate as a differential pressure switch and as reverse pressure 

switch.

Unit SWITCHMATIC 2T in addition to all the features of the basic SWIT-

CHMATIC includes instantaneous reading of current drawn. This paten-

ted system controls and manages the overcurrent, dry-run operation and 

fast-cycling.

Unit SWITCHMATIC 2T in addition to all the features of individual assem-

bly includes the option to be synchronized to another unit SWITCHMATIC 

2T managing and protecting 2 pumps operating in cascade with alterna-

ted starting sequence.

 

CLASSIFICATION AND TYPE

According to IEC 60730-1  and EN 60730-1 this unit is a control sensor 

device, electronic, independent assembly, programming type A with action 

type 1B (microdisconnection). Operating value: I <20% I learned. Pollution 

degree 2 (clean environment). Rated impulse voltage: cat II / 2500V. Tem-

peratures for ball test: enclousure (75) and PCB (125). 

OPERATING CHARACTERISTICS

•  Adjustable cut-in and cut-out pressures.

•  Integrated digital pressure gauge with bar and psi indication.

•  Inner pressure transmitter.

•  Dry-run protection: through the instantaneous current consumption 

in case of.

•  Overload protection.

•  Overvoltage protection.

•  Undervoltage protection.

•  ART Function (Automatic Reset Test). When the device has stopped 

the pump by the intervention of the  dry-running protection system, 

the ART tries, with scheduled basis, to re-start the pump in order to 

restore the water supply. See “ART. Automatic reset function“. Must be 

activated in the step 5 of the ADVANCED MENU (Ar1).

•  Fast cycling: when the hydropneumatic tank has lost too much air and, 

consequently, frequent start-stop cycles are produced this alarm is 

activated and is delayed the start of the pump. Activated (rc2).

•  Manual start push-button (ENTER).

• 

3 operation modes: differential, reverse and synchronized.

•  Control panel with 3-digit display, LED indicator lights and push-

buttons.

•  Available settings:

• Stand-by mode.

• Minimum period between fast cycles.

• Start and stop delay.

TECHNICAL CHARACTERISTICS

•  Rated motor power: 

  

4,4kW (5,5HP)

•  Power supply: 

   

 

~3 x 230-400 Vac  

 

•  Electric outlet:   

 

~3 x 230-400 Vac 

•  Pessure max. 

 

 

1,2 MPa

•  Frequency: 

   

 

50/60Hz

•  Max. current:  

 

 

10 A

•  Protection degree:  

 

IP55 

•  Max water Temperature: 

 

40ºC

•  Max environment Temperature:  

50ºC

•  Maximum relative humidity:   

80% (31ºC) - 50% (40ºC)

•  Cut-in range (start pressure)   

0,5

÷

11,5 bar

•  Cut-out range (stop pressure) 

1÷12 bar 

• 

Max. differential (Pstop-Pstart) 

11,5 bar 

• 

Minimum differential (Pstop-Pstart)) 

0,5 bar

•  Factory setting (start/stop)   

3/4 bar

•  Hydraulic inlet   

 

G1/4” Female - Rotative nut

•  Net weight (without cables)   

0,654 kg

HYDRAULIC INSTALLATION

 

(diagram A)

 SWITCHMATIC 2T equipment must be threaded to a fitting G1/4” 

male at the pump´s outlet. 

Before connecting the SWITCHMATIC 2T verify that the hydraulic system is 

properly installed, especially if the hydropneumatic tank is pressurized.

ELECTRIC CONNECTION (diagram B)

 

The electric connection must be performed by qualified personal in 

compliance with regulation of each country. Before doing manipulations 

inside the device, it must be disconnected from the electric supply. 

Wrong connection could spoil the electronic circuit. 

The manufacturer declines all responsability in damages caused by 

wrong connections.

When carrying out the electrical connection it is compulsory to use a differen

-

tial switch of high sensitivity: I = 30 mA (clase A o AC). It is compulsory to use a 
magnetothermic switch adapted at the motor load.

Check if power supply is between 230-400V.

If you have purchased the unit without cables follow diagram B:

•  Use cables type H07RN-F 4G1 or 4G1,5 with section enough to the power 

installed.

•  Do the pump connection U, V, W and   

•  Do the power supply connection L1, L2, L3 and  .

• 

The earth conductor must be longer than the others. It will be the first 

one to be mounted during the assembly and the last one to be discon-

nected during the dismantling. 

The earth conductors connections are 

compulsory!

CONTROL PANEL (diagram C)

The meanings of the different control panel elements are summarized on the 

following tables, where: 

•  O means lit LED light.

• 

( ( O ) ) means slow-flashing.

• 

(((O))) means fast-flashing.

DISPLAY

ACTION

OPERATION MODE

Is showed on screen instantaneous pressure or instanta-

neous current consumption  

ADJUSTMENT MODE

Is displayed on screen the adjusted start pressure 

blinking.

Is displayed on screen the adjusted stop pressure blin-

king.

Is displayed the adjusted rated current blinking.

ALARM MODE

Is displayed the alarm code

STAND-BY MODE

Are displayed 3 flashing dots

BASIC CONFIGURA-

TION MODE

Is displayed the sequence of basic configuration para

-

meters

ADVANCED CONFI-

GURATION MODE

Is displayed the sequence of advanced configuration 

parameters 

LEDS

STATE

MEANING

bar

O

It indicates the instantaneous pressure in bar

( ( O ) )

It indicates the instantaneous pressure in bar + 

pump operating

psi

O

It indicates the instantaneous pressure in psi

( ( O ) )

It indicates the instantaneous pressure in psi + 

pump operating

A

O

It indicates the instantaneous current consumption 

in Ampere units

( ( O ) )

Pump ON

START

O

Is displayed the start pressure

( ( O ) )

Adjusting start pressure

STOP

O

Is displayed the stop pressure

( ( O ) )

Adjusting stop pressure

O

Ratified dry-running or overload alarms

( ( O ) )

Dry-running alarm performing ART or overload 

alarm preforming any of the 4 restore attempts

(((O)))

Fast-cycling alarm

V

O

It indicates the instantaneous voltage consumption 

in voltage units

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