Description
M31 Controller – intelligent controller for three-phase pumps with operating history
The IBO M31 controller is a professional electronic controller for operating and comprehensively protecting a single three-phase pump. It automatically switches the pump on and off depending on the water level or pressure, while also recording the accumulated operating time and the history of the last five faults. Effective dry-run protection works even without installing probes in the well, and the dynamic display continuously shows the status of the system, making monitoring and diagnostics easier.
Who it is for
- Installers and electricians – the M31 controller makes diagnostics easier by recording fault history and operating time, shortening the service time for a three-phase pump.
- Homeowners and farms with a well water intake – the controller automates the water supply and protects the pump against costly failures.
- Agricultural and horticultural farms – the device monitors pump operation when irrigating fields, greenhouses, and gardens, as well as in rainwater management systems.
- Facilities with pumping stations and tanks – the controller switches the pump on and off according to the level or pressure, while an overflow probe warns of tank overfilling.
Applications
The M31 controller is suitable wherever a single three-phase pump is to operate automatically and the user wants insight into its operation. It works with submersible borehole pumps for water supply from wells, surface pumps in water supply systems, and immersion pumps in tanks, septic tanks, and drainage systems. The on/off signal is received from level probes, floats, or a pressure switch working with a pressure tank.
The device controls the pump according to the water level in the tank from which it pumps, the level in the target tank, or the pressure in the system. The recorded operating time and fault history facilitate ongoing monitoring and any necessary servicing. It can be used in houses, apartments, vacation homes, farms, and industrial installations. The intelligent M31 400 V controller provides automatic and safe control of a three-phase pump.
Features of the M31 controller
The heart of the device is an electronic system with a dynamic LCD display showing voltage, current, pump operating status, and fault messages. The M31 uses dual dry-run protection – it analyzes the signal from probes or a float as well as the current draw of the operating pump. Importantly, dry-run protection also works without installing probes in the well itself: after the relevant inputs are bridged, the controller detects dry running based on current draw and stops the pump in time. When a fault occurs, the device automatically checks the conditions and resumes operation only after the irregularity has ceased.
Unlike the basic M131 model, the M31 controller additionally records the accumulated pump operating time and the history of the last five faults in which the protective functions were activated. This makes it easier to assess the condition of the system and plan inspections. As a three-phase device, the M31 should be connected by a qualified installer in accordance with the instructions and applicable regulations.
- Brand: IBO
- Type: intelligent pump controller / controller
- Power supply: 3~400 V, 50 Hz
- Power range of supported pumps: 0.75–4 kW
- Protection rating: IP22
- Operating modes: automatic / manual
- Protections: dry running, overload, phase failure, voltage drop and surge, overvoltage and undervoltage, voltage surge, short circuit
- Extended functions: pump operating-time counter, history of the last 5 faults, dynamic LCD screen
- Operating temperature range: -25°C to +55°C
- Included: 3 measuring probes
IBO – 24-month (2-year) manufacturer's warranty.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.
Frequently asked questions (FAQ) – M31 controller
What is the M31 controller used for?
The M31 controller is an intelligent controller for automatically operating and protecting a single three-phase pump. It switches the pump on and off depending on the water level or pressure, protects it against dry running and power-supply irregularities, and also records operating time and fault history.
Which pumps can be connected to the M31 controller?
The M31 works with three-phase submersible borehole, surface, and immersion pumps supplied with 3~400 V. It is available in two versions for supported pump power ranges: 0.75–4 kW and 5.5–7.5 kW, allowing it to be selected for different installations.
How does the M31 controller differ from the M131 model?
The M31 has the same power-supply parameters and the same set of protections as the M131, but additionally displays the accumulated pump operating time, records the history of the last five faults, and uses a dynamic LCD screen. You can find the full range of controllers in the controllers category.
Does the M31 protect the pump against dry running without installing probes in the well?
Yes. The M31 can detect dry running by analyzing the pump's current draw, so effective protection also works when installing probes in the well is difficult or costly. When dry running is detected, the pump is stopped and the controller attempts to restart it after the problem has ceased.
Can the M31 controller be installed outdoors?
The M31 has an IP22 protection rating and is designed for indoor installation, in a vertical position, in a dry and well-ventilated location. The device must be protected from water, including rainwater, so when the pump operates outdoors, the controller itself should be placed indoors or in a suitable protected enclosure.
Where can I buy the M31 controller?
As the manufacturer, we do not sell directly. The IBO M31 controller can be purchased from our trade partners, installation wholesalers, and authorized online distributors.
What is the warranty on the M31 controller?
IBO – 24-month (2-year) manufacturer's warranty.
- Type: Pump controller,
- Number of pumps supported: 1,
- Maximum power: 4.0 kW,
- Power supply: 300–400 V,
- Frequency: Hz,
- Maximum supported current: A
- Protection rating:
- Maximum liquid temperature: °C
- Dimensions: mm,
- Weight: 1.4 kg.
CONTROLLER FUNCTIONS
• Automatic attempt to restart the pump after it has been shut down in an emergency by one of the protection functions. Different emergency situations have different automatic restart times.
• The controller can be calibrated and recalibrated to work with a given pump.
• Switching the pump on and off depending on:
o The water level in the tank from which water is pumped,
o The water level in the tank to which water is pumped,
o The pressure value in the tank to which water is pumped,
• Operation in automatic or manual mode.
• Various on/off signal sources: probes, floats, pressure sensors.
CONTROLLER PROTECTION FUNCTIONS
• Dual dry-run protection using:
o Fluid-level probes/sensors,
o Analysis of the operating pump’s current consumption,
• Overload protection,
• Protection against voltage drops,
• Protection against voltage spikes,
• Overvoltage protection,
• Short-circuit protection,
• Phase-loss protection.
Additional M31 Functions
The M31 controller also features:
• A function displaying the pump’s accumulated operating time,
• A function displaying the history of the last five faults that triggered the protection functions,
• A dynamic LCD screen displaying the pump’s current operating status.
Download: M_31_instrukcja_PL_EN_DE.pdf
Download: GARAN_Prawny_obowiazek_zapewnienia_zgodnosci_towaru_z_umowa.pdf
M31 Controller – intelligent controller for three-phase pumps with operating history
The IBO M31 controller is a professional electronic controller for operating and comprehensively protecting a single three-phase pump. It automatically switches the pump on and off depending on the water level or pressure, while also recording the accumulated operating time and the history of the last five faults. Effective dry-run protection works even without installing probes in the well, and the dynamic display continuously shows the status of the system, making monitoring and diagnostics easier.
Who it is for
- Installers and electricians – the M31 controller makes diagnostics easier by recording fault history and operating time, shortening the service time for a three-phase pump.
- Homeowners and farms with a well water intake – the controller automates the water supply and protects the pump against costly failures.
- Agricultural and horticultural farms – the device monitors pump operation when irrigating fields, greenhouses, and gardens, as well as in rainwater management systems.
- Facilities with pumping stations and tanks – the controller switches the pump on and off according to the level or pressure, while an overflow probe warns of tank overfilling.
Applications
The M31 controller is suitable wherever a single three-phase pump is to operate automatically and the user wants insight into its operation. It works with submersible borehole pumps for water supply from wells, surface pumps in water supply systems, and immersion pumps in tanks, septic tanks, and drainage systems. The on/off signal is received from level probes, floats, or a pressure switch working with a pressure tank.
The device controls the pump according to the water level in the tank from which it pumps, the level in the target tank, or the pressure in the system. The recorded operating time and fault history facilitate ongoing monitoring and any necessary servicing. It can be used in houses, apartments, vacation homes, farms, and industrial installations. The intelligent M31 400 V controller provides automatic and safe control of a three-phase pump.
Features of the M31 controller
The heart of the device is an electronic system with a dynamic LCD display showing voltage, current, pump operating status, and fault messages. The M31 uses dual dry-run protection – it analyzes the signal from probes or a float as well as the current draw of the operating pump. Importantly, dry-run protection also works without installing probes in the well itself: after the relevant inputs are bridged, the controller detects dry running based on current draw and stops the pump in time. When a fault occurs, the device automatically checks the conditions and resumes operation only after the irregularity has ceased.
Unlike the basic M131 model, the M31 controller additionally records the accumulated pump operating time and the history of the last five faults in which the protective functions were activated. This makes it easier to assess the condition of the system and plan inspections. As a three-phase device, the M31 should be connected by a qualified installer in accordance with the instructions and applicable regulations.
- Brand: IBO
- Type: intelligent pump controller / controller
- Power supply: 3~400 V, 50 Hz
- Power range of supported pumps: 0.75–4 kW
- Protection rating: IP22
- Operating modes: automatic / manual
- Protections: dry running, overload, phase failure, voltage drop and surge, overvoltage and undervoltage, voltage surge, short circuit
- Extended functions: pump operating-time counter, history of the last 5 faults, dynamic LCD screen
- Operating temperature range: -25°C to +55°C
- Included: 3 measuring probes
IBO – 24-month (2-year) manufacturer's warranty.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.
Frequently asked questions (FAQ) – M31 controller
What is the M31 controller used for?
The M31 controller is an intelligent controller for automatically operating and protecting a single three-phase pump. It switches the pump on and off depending on the water level or pressure, protects it against dry running and power-supply irregularities, and also records operating time and fault history.
Which pumps can be connected to the M31 controller?
The M31 works with three-phase submersible borehole, surface, and immersion pumps supplied with 3~400 V. It is available in two versions for supported pump power ranges: 0.75–4 kW and 5.5–7.5 kW, allowing it to be selected for different installations.
How does the M31 controller differ from the M131 model?
The M31 has the same power-supply parameters and the same set of protections as the M131, but additionally displays the accumulated pump operating time, records the history of the last five faults, and uses a dynamic LCD screen. You can find the full range of controllers in the controllers category.
Does the M31 protect the pump against dry running without installing probes in the well?
Yes. The M31 can detect dry running by analyzing the pump's current draw, so effective protection also works when installing probes in the well is difficult or costly. When dry running is detected, the pump is stopped and the controller attempts to restart it after the problem has ceased.
Can the M31 controller be installed outdoors?
The M31 has an IP22 protection rating and is designed for indoor installation, in a vertical position, in a dry and well-ventilated location. The device must be protected from water, including rainwater, so when the pump operates outdoors, the controller itself should be placed indoors or in a suitable protected enclosure.
Where can I buy the M31 controller?
As the manufacturer, we do not sell directly. The IBO M31 controller can be purchased from our trade partners, installation wholesalers, and authorized online distributors.
What is the warranty on the M31 controller?
IBO – 24-month (2-year) manufacturer's warranty.



