Application 12
Application 12
Application No.12 - Feeding of Maize to Mixers
Application No.12 - Feeding of Maize to Mixers
Embedded Files
This project was for a snack producer in the UK
The main ingredient of the snacks being produced on the lines we were dealing with was maize. A mixture of coarse and fine Maize from storage silos is conveyed into the building to two discrete weighers. When one of the mixers calls for product, the system transfers the correct amount of each quality of maize via loss in weight systems. Here it is mixed with a number of minor additives (added by hand) before being extruded to form products such as Onion rings, Bacon Frazzles etc. The introduction of this system removes the need for the operator to tips tonnes of material per shift from 25kg sacks by hand.
The system comprised an Allen Bradley Compact Logix PLC, and a number of HMIs.
The PLC and one of the HMIs was housed in the main control panel; a floor standing stainless steel panel. This system shows the entire plant, and allows the set up and monitoring of all mixers.
Each Mixer/Pair of Mixers also have their own Operator panel where the operator can set up the requirements for those mixers only.
Below are some photos of the panels, graphics screens, and Plant Controlled
The control panels on this project were all Stainless Steel. They consisted of a main panel housing the plc and motor starters, with an hmi on the front, and a number of small operator panels. The operator panels had an hmi on the front for setting up recipes, a couple of lights and pushbuttons, and marshalling terminals inside.
The screens on the main panel show the operator:
The status of each item of equipment
Alarm conditions
Recipe set-up of each mixer
Current status of each mixer
It also allows the operator to manually operate any piece of equipment.
The screens on the operator panel only show the recipe set-up and current status for each mixer
Page updated
Google Sites
Report abuse