Instruction manual V 2.3
8
PWM 230 - PWM 400 - PWM 400/7.5
Instruction manual
1.1 Applications
PWM systems are useful in all cases we need to control one or more pumps managing their turn-on and
turn-off. The PWM system maintains a constant pressure by changing the frequency of rotation of the pump.
Normally, the pump takes water from a basin or a well.
Typical usage scenarios include:
-
Houses
-
Flats
-
Holiday
houses
-
Farms
-
Water supply from wells
-
Irrigation of greenhouses, gardens, agriculture
-
Rain water reuse
-
Industrial
plants
PWM systems can be connected to the “Da Vinci” controller board to form a system together with up to 4
PWM in the same installation. The controller allows setting the working parameters and controls the whole
system, thus widening usage possibilities of the PWM. PWM works with drinking water, domestic water or
clean water without solid particles or suspended abrasive material.
PWM cannot be used with: feed liquid, inflammable fluid, by-products of the hydrocarbons,
aggressive, corrosive or viscous fluids.
1.2 Technical
features
The following chart shows all technical features of the PWM series systems
Table 1: Technical features
For further details about pressure loss of PWM, please see the appendix.
PWM 230
PWM 400
PWM 400/7.5
Max. current
9,3 A
13,3 A
7.5 A
Power supply voltage
230 V single-phase
tolerance: +10%; -20%
400 V three-phase
tolerance: +10%; -20%
400 V three-phase
tolerance: +10%; -
20%
Minimum voltage
184 V
320 V
320 V
Maximum voltage
264 V
457 V
457 V
Pump motor type
230 V three-phase
400 V three-phase
400 V three-phase
Unit weight (packing not included) 3,7 Kg.
5,0 Kg.
5,0 Kg.
Installation Position
Any
Vertical
Vertical
Max. fluid temperature
50°C
Max working temperature
60°C
Max pressure
16 bar
Set Pressure range
1 - 15 bar
Max. Flow
300 l/min
Dimensions (LxHxD)
22x28x18 cm
Hydraulic Joint Inlet
1 ¼” male
Hydraulic Joint Outlet
1 ½” female
Degree of protection
IP 55
Connectivity
RS 485 serial interface
Protections
Dry run
Overcurrent
Overtemperature
Abnormal supply voltage
Direct short circuit of output phases