• 4I28-(Non-RoHS) 4 axis servo motor controller card (PWM)

The 4I28 is a low cost, LM629 based 4 axis DC servo motor control system implemented on a stackable PC/104 bus card. The 4I28 is designed for high performance positioning systems using DC servo motors with quadrature shaft encoders.  The per axis output of the 4I28 is an 8 bit sign-magnitude PWM signal that can drive H-bridge type servo amplifiers directly.  Quadrature encoder and index inputs are conditioned with RC filters and Schmitt triggers for noise immunity.  Sixteen general purpose I/O bits are available for any application use.  The LM629's used on the 4I28 are high performance digital processors specifically designed for motion control.  The LM629 can execute a ramp-up, slew, and ramp-down motion sequence without host processor intervention.  Host interrupts can be generated at end of motion, position breakpoints, index pulse, or in response to various error conditions.  Interrupts are or'ed on the 4I28 card, so that only one system interrupt is used.  A digital PID filter is used to set loop feedback parameters for stability and optimum performance.  Velocity, target position and filter parameters may be changed during motion.  Demonstration software includes examples of 4 axis position mode operation, velocity mode operation, and a simple filter tuning program that allows dynamic filter coefficient modification while providing a graphic display of the servo system step response.  Source code is provided for all demonstration software.

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4I28-(Non-RoHS) 4 axis servo motor controller card (PWM)

  • US$561.00


  • 5 or more US$449.00
  • 25 or more US$426.00
  • 100 or more US$405.00