Series 90 Micro PLC User's Manual, GFK

H

Bakery Industry

Pastry Line Conveyor Control

The Need

The system includes several conveyors for a toaster pastry line, in which on-the-spot decisions on when to transfer pastries to the packaging machine conveyor are made. Decisions are based on the count of pastries, which occurs at high speed, and the downstream packaging machinery loading.

The Solution

GE Fanuc supplied ten Series 90 Micro PLCs and a Series 90-70 PLC. The Micro PLCs are distributed along the conveyor belt at each packaging point. The high-speed counting ability of the

Series 90 Micro and its local logic allow it to make the necessary on-the-fly decisions for conveyor control.

System parameters are transmitted using SNP to the Series 90-70 PLC at the heart of the system.

The Series 90-70 PLC monitors the overall performance of the system.

The Benefits

The Series 90 Micro PLC affords the customer the advantage of a cost-effective compact package that provides high-speed counting and local logic.

Series 90 Micro PLCs control individual sections of the conveyor as the Series 90-70 PLC controls the overall system.

GFK-1065F Appendix H Case Histories H-3