• 4I27A 2 axis servo motor controller card (analog out)

The 4I27A is a low cost, LM628 based 2 axis DC servo motor control system implemented on a stackable PC/104 bus card.  The 4I27A is designed for high performance positioning systems using DC servo motors with quadrature shaft encoders. The per axis output of the is a +- 10 volt analog signal with 12 bits of resolution.  Quadrature encoder and index inputs use balanced RS-422 levels for noise immunity.  Control signals for each axis include 3 auxiliary I/O bits.  These I/O bits are used for over-temperature shutdown detect and servo amplifier enable.  Eight general purpose I/O bits are available for any application use.  The LM628's used on the 4I27A are high performance digital processors specifically designed for motion control.  The LM628 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 4I27A card, so that only one system interrupt is used.  The IRQ line used can be software selected from any of the 11 available AT bus interrupts.  The 4I27A requires only +5V power, as all analog output power is generated on card.  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 2 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.  A PWM output version of the 4I27A is available as the 4I27.

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4I27A 2 axis servo motor controller card (analog out)

  • US$385.00


  • 5 or more US$308.00
  • 25 or more US$293.00
  • 100 or more US$278.00