Andy Pugh wrote: > PWM sounds like a better way to go. > In theory you could then connect the PWM to the Z-position-cmd in HAL. > G0 Z1 would be full-power into the solenoid, G0 Z0.5 half-power, and > G1 Z0.5 F20 (or similar) would be a slowly ramping PWM suitable for > gently pushing a drill bit. > Solenoids are not generally linear devices. As the armature is pulled into the coil, the magnetic field becomes stronger as the air gap shrinks. So, enough current to start it moving from the fully-up position might still make it slam hard at the end of the stroke.
Jon ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
