Sustainable material conveyance on the construction site – efficient drive technology for electric screed pumps

How the Putzmeister Group uses the i550 cabinet from Lenze to operate electric pneumatic conveyors efficiently, quietly, and reliably

Wer schon einmal ein Haus gebaut oder renoviert hat, kennt Druckluftförderer für die Estrichverarbeitung. Sie transportieren den Estrich zuverlässig vom Mischpunkt bis zum Einbauort im Gebäude.

Mit dem EstrichBoy EC 260 setzt Brinkmann, eine Tochter der Putzmeister Group, auf eine neue Generation elektrischer Druckluftförderer. Das Unternehmen entwickelt Maschinen für die Herstellung, Förderung, Verteilung und Einbringung von Beton und Mörtel und zählt weltweit zu den führenden Anbietern seiner Branche.

Während herkömmliche Maschinen überwiegend mit Dieselmotoren betrieben werden, nutzt der EstrichBoy EC 260 einen elektrischen Antrieb. Dadurch werden Schallemissionen reduziert, lokale Emissionen vermieden und die Energieeffizienz verbessert. Zum Einsatz kommt dabei der Frequenzumrichter i550 cabinet von Lenze.

Electric compressed-air conveyors must:

  • reliably deliver high flow rates
  • respond flexibly to varying operating conditions
  • operate energy-efficiently
  • have a compact design
  • be suitable for use even in noise-sensitive areas

High Demands on Drive Technology in Electric Compressed Air Conveyors

Electric construction site machines place high demands on the drive technology used: 

  • high performance for conveying screed and mortar 
  • compact integration into limited installation spaces 
  • simple parameterization and commissioning 
  • flexible switching capabilities for different application scenarios 
  • reliable communication and system integration 
  • compliance with electromagnetic compatibility (EMC) requirements 

Benefits for efficient and precise high-pressure applications

  • Quiet operation on the construction site
    The electric drive also meets high standards in noise-sensitive areas and significantly reduces noise pollution.
  • Energy-efficient operation
    The temperature-controlled fan reduces energy consumption and noise emissions.
  • Zero-emission operation
    No exhaust gases and no local CO₂ emissions, ideal for inner-city applications and enclosed spaces.
  • Compact design
    The i550 cabinet impressed with its compact design and fit perfectly into the limited space of the control cabinet on the trailer.
  • Easy commissioning
    Simple parameterization and communication enable quick integration into the machine architecture.
  • Flexibility and reliability
    High performance and flexible switching capabilities support a variety of requirements on the construction site and ensure maximum operational flexibility.
  • EMC-compliant
    Compliance with electromagnetic compatibility requirements ensures reliable machine operation.

The electrification of construction site machinery demonstrates how modern drive technology helps make material handling more efficient, quieter, and more sustainable. With the i550 cabinet, Lenze supports machine manufacturers in developing high-performance electric compressed-air conveyors for the construction sites of tomorrow.

Learn how variable-frequency drives operate conveyor and pump applications with energy efficiency and precision.

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