Pump control modules

Pump controllers for variable-displacement pumps provide precise control of flow rate and pressure in hydraulic systems while simultaneously protecting the pump and the system from overload. They regulate swash angle, pressure and power according to demand, thereby increasing energy efficiency in industrial plants, construction machinery,
agricultural and municipal equipment, as well as mobile working machines. Learn more...

Product image Universal pump control module PQP-176-P
Universal pump control module PQP-176-P
- Swing angle, pressure and power control
- Freely scalable analog inputs
- Compact design
- Digital reproducible adjustment
- Optimized control function
- Application-oriented parameterization
- Two parameter sets can be selected for pressure control
- Swivel angle limiting function
- Integrated power output stage
- Alternatively, analog manipulated variable for control valves with OBE
- Fault diagnostics and extended function check
- Easy parameterization with the WPC-300 software
1.328,13 EUR
1.135,15 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
1.135,15 EUR excl. 17% tax
Product image Pump control module PQP-171-P
Pump control module PQP-171-P
- Swing angle, pressure and power control
- Freely scalable analog inputs
- Compact design
- Digital reproducible adjustment
- Optimized control function
- Application-oriented parameterization
- Two parameter sets can be selected for pressure control
- Swivel angle limiting function
- Integrated power output stage
- Alternatively, analog manipulated variable for control valves with OBE
- Fault diagnostics and extended function check
- Easy parameterization with the WPC-300 software
569,19 EUR
486,49 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
486,49 EUR excl. 17% tax
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Our high-quality pump controllers are built with robust metal housings, precisely manufactured internal components and durable sealing elements, designed for demanding operating conditions. In the Hydromot webshop you will find controller solutions specifically matched to variable-displacement pumps, including for swash-angle and pressure control (p/Q) as well as load-limiting and power control. Examples such as the pump controllers PQP-176-P and PQP-171-P demonstrate the breadth of our product range – featuring freely scalable analogue inputs, integrated power stages and advanced fault diagnostics for reliable and efficient pump control.

 

Pump Controllers in Hydraulic Systems – Frequently Asked Questions

What exactly is a pump controller and what is its function in a hydraulic system?

A pump controller is a central component in hydraulic systems, particularly in variable-displacement pumps such as axial piston units.

Its task is to control the pump’s flow rate and/or pressure. To do this, it automatically adjusts the swash angle of the pump unit to maintain the desired flow (Q) or system pressure (p) within the predefined target range.

Which types of control can pump controllers perform?

Pump controllers support different control types depending on the application and pump design.

Typical control modes include:

  • Swash-angle control
  • Pressure control
  • Power- or load-limiting control

Often, combinations are used, such as pressure/flow control (p/Q). Modern modules are specifically designed to meet the demands of variable-displacement pumps.

Where are pump controllers typically used?

Pump controllers are used in numerous technical fields, including:

  • Industrial hydraulic systems (e.g., presses, injection moulding machines)
  • Mobile machinery (construction equipment, agricultural machinery, cranes, municipal equipment)
  • Energy and environmental technology
  • Test benches and testing systems

The purpose of using pump controllers is to optimize energy efficiency, ensure smooth operation and protect the pump from overload.

What advantages do pump controllers provide to the hydraulic system?

Pump controllers increase energy efficiency because the pump delivers only the power actually required.

Additional advantages include:

  • Protection of the pump and system components against overload
  • Improved process stability through constant pressure and flow specifications
  • Flexibility due to digital or analogue control options
  • Extended diagnostic and monitoring functions on modern models

Which parameters must be considered when selecting a suitable pump controller?

When selecting a pump controller, the following parameters should generally be considered:

  • Pump type (e.g., axial piston, swash-plate)
  • Maximum pressure and flow range
  • Desired control mode (swash-angle, pressure, power)
  • Type of control input (electrical, hydraulic, analogue/digital)
  • Media compatibility of the materials used
  • Installation situation, space availability and system compatibility

What maintenance effort is required for pump controllers and how long is the service life?

Pump controllers require relatively little maintenance. Regular visual inspections and checks of electrical and hydraulic connections are generally sufficient.

With proper use, pump controllers often achieve a service life of many thousands of operating hours. Corrosion-resistant materials and regular system maintenance further contribute to reliability and long service life.

Which advanced digital functions can modern pump controllers offer?

Modern pump controllers often provide advanced digital control and diagnostic features, including freely scalable analogue inputs, reproducible digital settings and application-specific parameterization options.

Some models combine several control types, such as swash-angle, pressure and power control in one device.

Other features may include:

  • Optimized control functions for different pump types
  • Advanced fault diagnostics and function monitoring
  • Simple parameterization via USB or software interfaces