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Solar collector production line


  • Siemens CPU 315-2 PN/DP, 317-2 PN/DP and ET200S control system
  • 15“ Siemens Comfort Panel, touch-screen operation
  • Pilz Pnozmulti safety technology
  • Siemens SINAMICS Smart Line and Lenze 8400 StateLine C drive technology with PROFINET fieldbus interface
  • Decentralised peripheral SIMATIC ET 200eco PROFINET fieldbus boxes throughout the facility
  • Festo CPX terminals with PROFINET fieldbus interface for decentralised activation of pneumatic system
  • Trumpf laser-welding facility (TruPulse 556) with PROFIBUS interface
  • Plasmatreat plasma cleaning device for optimal bonding
  • Reinhardt Technik bonding facility with PROFIBUS interface
  • Process speed: A completed solar collector is discharged every 5 minutes



  • Concept development
  • Project planning
  • Risk assessment and safety evaluation according to Machinery Directive EN 13849
  • Performance specification
  • Interface specifications
  • Welding and bonding process
  • Wiring diagrams
  • Operating manuals, servicing plans
  • Remote maintenance

Software development

  • PLC programming with Siemens TIA portal
  • Visualisation

Control installation

  • Construction of control cabinet
  • Installation and commissioning of the plant
  • Process optimisation together with the customer


  • Training and manufacturing support

Short project description:

The facility manufactures what is currently the most efficient solar collector available on the global market.

With a welding speed of approx. 10m/min, the laser-welding plant welds the absorber (made from aluminium) onto the meander (copper pipes).

The individual welding points are spaced at a distance of 2mm. After the laser-welding process, the absorber moves on to the next manufacturing stage. The pre-drilled frame is taken to the bonding station.

The 1-component glue with accelerator is transferred onto the frame via an XYZ portal. The back is then pressed onto the frame and the frames are hardened using a buffer system.

After this manufacturing phase, the heat insulation, connectors and welded absorbers from the laser-welding machine are positioned into the frame and clipped into place.

This frame is now once again transported to the bonding station where the glue for the solar safety glass is applied. The glass is pressed on after the bonding process and discharged after a hardening period in the buffer. A completed solar collector is discharged every 5 minutes.




Video production line:

Hoval UltraSol evolutionary history: