> > > > > I have recently acquired a number of motors and one robot. A bit > battered. > > But I only have a few of the servo drives loose, SGDR-SDA140A01BY22 and > > SGDR-SDA060A018. No controller box. > > > > Do you have detailed info on driving these servos? I see that that are > > essentially dumb devices, an H-bridge brick and a number of opto > isolaters. > > It probably isn't too difficult to buzz them out, but all info would be > > useful. > > > > > Are you sure they are "dumb" drives? These appear to be > servo-pack drives. > I worked with some a long time ago, from an earlier series. > The encoder is proprietary, the AB are normal, but the C > track looks like the AB, but apparently has a phase shift > that tells you what quadrant you are in. The drives > internally convert the encoder to standard ABZ quadrature > with index, to send to the controller. There should be a > serial interface (can be hooked to RS-232 or RS-485) to a > PC, and use Yaskawa's configuration program. > Early drives were positioning only or speed only, later > drives could do either via configuration. > I set up a SGDP drive to run in both analog +/- 10 V mode > and step/direction mode through the utility. > > Jon > > Here are two images. One off the net, and the other is an inside view. I haven't cleaned the boards yet............ There is a brick mounted on the heatsink, bottom left, and both boards have no uP, unless there's one inside the brick, which I doubt..
https://ibb.co/3hWYbzg https://ibb.co/GxFWfZX So presumably this unit just drives the H bridge and the intelligence is in another module called the 'converter', which I don't have. Roland _______________________________________________ Emc-users mailing list Emcfirstname.lastname@example.org https://lists.sourceforge.net/lists/listinfo/emc-users