Re: Big servo motors drive recommendations

Forgive me for mentioning this as I'm no electronics expert.

Over the past 4 years I have scrapped out 5 large laser cutting
machines with 5'x 10' beds.
Most of these were on SEM servo's 140 volt 56 amp peak and were
controlled by Baldor servo cards.
I still have the Baldor book somewhere. Now the brief on these
machines was some spares were kept but the rest went under the hammer
- literally as they didn't want the machines going onto the S/H market.

Some motors were saved, some sold and the drive cards sold. The cards
made absolute peanuts on Ebay and Niel Ginley at Pennine Automation
was paying £20 a card.
From memory as I don't have any cards here but there may still be some
in a cupboard at the laser co. these were very simple with no chips on
board.

Is it possible to either buy cheaply or make some board to this spec
and drive them via a step and direction board.
They were easy to tune, three pots in fact most boards had cheap
multimeters left connected up so they could be tweaked when needed.

John S.