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Hey take a look at some modular Allen bradley PLC's and do some reading it sounds to me you could benefit here. These will also offer room for future expansion. Modicon can also offer you some expansion and do what you need. I dont want to push any product but these have been very useful for us.

What kind of problems should I expect with installing a vfd 100 ft from my motor that is 25hp 480v 33.7a w/ an Allen Bradley power flex 70 vfd. The conductor size I came up with is 3 - #6 thw-2 and a #10 grnd. Any suggestions on better condutors? I also came up w/ a 90a inverse time trip...

Here is more info on 480 motors w/ soft starts that keep tripping. Motors are Baldor Super-e hp. 150, class f, rpm 3570, des b, amps 164, code G, hz 60, rating 40c amb. cont., nema nom eff 95.4, pf 90, ser. f. 1.15 they are driving a spencer blower mizer blower #c534t41a1, with an Allen Bradley...

we have had 2 large 480 motor w/ soft starts installed both seem to be failng on start up they both are 164 amp. we have an adjust. trip setting breaker ahead of a soft start set at approx 900+ amp for inrush which you would think should be plenty. I see no faults in history of soft start and...