| Control system
development for five new conveying lines in bottling plant.
SUMMARY:
Used five programmable logic controllers (PLCs) to control
table-top conveyors (for loose bottles) and full-case conveyors
(for packaged bottles) for five new bottling lines.
DESCRIPTION:
The five new bottling lines use table-top conveyor to convey
loose bottles from the fillers to the case-packers and full-case
conveyors to convey cases from the case-packers to the palletizers.
Using photoeyes and accumulation control logic, the PLC controls
the conveyors to maintain product flow and avoid backups. A plant
floor device network is used between the PLC and the variable
frequency drives (VFDs) for start/stop and speed control. Messaging
between PLCs and a supervisory PLC is accomplished through a
gateway.
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