Application of PLC programming in cost efficient industrial process

Paper presents application of programmable logic controller (PLC) in consecutive putting into operation of three groups of motors. PLC programming is done on the base of prescribed technological parameters. Putting into operation of each group of motors consisted of two motors is done with programmed time delay necessary for starting current of the motors to decrease up to the rated value and consequently allowed maximal current which is not penalized by the electrical utility to be observed. Offered solution enables saving of electricity, cutting off costs related to maxi graph and economical operation of electrical drive