On 1/30/2014 2:44 PM, Viesturs Lācis wrote: > 2014-01-30 Jeshua Lacock <[email protected]>: > >> Or perhaps this driver: >> http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115 >> > Does anyone have experience with these drives? I have few servo motors > whose current requirements are too large for 7i39 drive, so this one looks > really tempting. But I feel reserved about the motor position feedback. So > what functionality does it have? Only commutating current in phases? I feel > confident that no feedback loop is closed in the drives. > > So are these drives any good? > > Viesturs >
I think that drive is targeted for the speed control market, not the servo positioning market. The hint is: "pot control with external 5 volt control available" Plus no mention of servo control, and it is only a 2 quadrant drive so it cannot regenerate power back into the power supply. A 4 quadrant drive is required for that. http://en.wikipedia.org/wiki/File:Four_quadrant_motion_control_of_a_motor.jpg Dave ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
