Optional arrangement may be provided to suit the equipment installation and process application.

The switching cabinet is built up using proven relay technology.  A diagram of the plant is printed on the front showing the individual machines and adjustment elements.  The sole automation is to be found in the reverse interlocking of the machines.
 

Switch cabinet set up as under A but with automatic measuring of the recipe using a component weigher with metering processor.

 Functions as for A and B though the control and
 interlocking of the individual machines is achieved not with
 relays but by means of the PLC.
 

Design as for A and C whereby individual parts of the plant can be switched on with a single switch.  Simple, unsupervised operations, for example night-time operating are possible.

Central contactor cabinet and PLC operation generally by means of a keyboard and monitor screen.  The operator gives one or more commands to the control system, whereby these are then processed either one after another, or, preferably, parallel to each other.  A command for product intake could be as follows:
* Input of product identification (abbreviation, number)
* Input of product source (intake hopper, exhaust, etc.)
* Input of require processing (awning, cleaning, etc.)

For plants requiring additions by hand a number of these additions can be prepared.  In automatic operation the control system makes such an addition to each batch independently.  It is possible to connect the control system to a host computer, permitting, for example:
* Automatic stock-keeping on the basis of weighing data
* Recipe management
* Order management

Operation of units with separate MCC stations running from a central control command center.

G     Process Computer Operational 
        Control

With these control systems it is possible to control the decisive process stages in the flour mill or pelleting plants with:
* A high degree of reliability;
* High accuracy; and
* Practically operator-free working.