TIP 120-0405 Light Array Ream Inspection

TIP_120-0405_Light Array Ream Inspection

Machine Model for Improvement

Pemco packaging machine Model 122, 124

Description of Improvement

This upgrade is part of the Technical Improvement Program (TIP); it replaces the existing inspection sensors with Light Arrays as depicted in the reference image.

The light arrays require a fast response time and analog input card. The existing PLC cannot satisfy these needs, so it鈥檚 replaced by AB Compact Logix or Siemens S7 with all of the required I/O cards. The existing ream reject fault indicators and other switches will be replaced by a 7 in HMI for operator interface. This HMI will also be used to 鈥渢each鈥 a new ream being run. To also improve the ream reject timing and precision, the existing 4-lobe scanner wheel will be replaced by a 8-lobe wheel along with a new sensor. The girth inspect eye will be replaced by a retro reflective eye thus eliminating all the fiber optic eyes on the machine.


  • Eliminates obsolete electrical components for ream inspection
  • Easier setup for different wrapping materials
  • Full perimeter ream inspection instead of point-by-point inspection

Technical Service

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Service Technician
A sheeter that we had planned especially for our lightweight specialty papers has become an all-round smart sheeter that can process even heavy grammages up to 300 gsm with maximum cutting accuracy.
Dr. Matthias Rauhut, CEO, DREWSEN SPEZIALPAPIERE, Lachendorf, Germany