Thanks CB2 and Radarray for the hints.
Bardac does not cover the high current units required.
We found Brook Solutions in Kitchener, Ont. (formerly SAF)
They make DD312 drives up to 800 HP. The unit has an analog front end (regulator) coupled to a digital firing card. They call it...
I am using MODICON's "Compact" series controllers. IMO Modicon's software (LMODSOFT, full-blown MODSOFT (both under MS-DOS)or their newer Windows based Concept software) allow on line program editing. I find Modicon to be the fastest and most convenient programming software if on-line...
Who still makes a conventional (analog NOT digital) 4-quadrant DC drive controller (for 480-3-60 input. It appears that the industry was very successfull in telling everybody that "it needs to be digital (= non-repairable, limited life expectancy, complicated start-up (300 parameters to...