[GEMorris]

I have some SEM brushed servos on my SCMI Routron which I just bought. They are rated at 4.5nm, drawing 10.2 amps and 57 amps at peak.

What would be a good drive option for these? I want to have a retrofit prepared incase anything happens to the onboard controller, which is ancient.

I can't find peak amp ratings for geckos, I'm assuming I'm going to have to go with something industrial, but perhaps not.

here is the tech sheet, mine are the 48's http://www.sem.co.uk/files/brochure/MT30U4.pdf

[yanjue]

If you want to keep the original performance of your motor, don't use Gecko drive, because it run at max 80Vdc. The motor will have less speed and stall torque.

Yannick

[Al_The_Man]

I have used Copley Controls & A-M-C for those motors but they are analogue input, which in all probability your existing ones are.
If you go with PC based control you will need step/dir drives or at least a step to analogue convertor board to use the likes of Copley.
You won't need the tach connection with modern drives.
Al.