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CV AI-STEP XC Advanced Intelligent Stepper Position Controller

Quantity Discount     Unit Price
List Price:   $299.95
1   $229.95


Datasheet (PDF)

The Critical Velocity AI-STEP XC is a powerful and versatile stepper motor position controller (indexer) capable of driving unipolar and bipolar stepper motors up to 3 amps per phase.

A full-featured menu-driven jog-dial interface allows stand-alone operation without a computer. In addition, a 100 position memory allows for quick recall of stored positions.

A serial interface allows computer or MCU control of the motor and AI-STEP configuration options.

The standard TTL STEP and DIRECTION interface allows for basic interaction while maintaining full control of maximum speed and acceleration of the motor.

Control Options:

  • Stand-alone Manual Jog Dial Operation or
  • Optoisolated RS-232 Serial, Inverted TTL Serial inputs for computer control or
  • Optoisolated TTL STEP / DIRECTION inputs for logic circuit operation

Memory Features:

  • 100 position memory accessible via jog dial or serial interface
  • Multiple power-up resume modes allow automatic return to previous position

Motor Drive Capabilities:

  • 3 A, 6 - 28V output rating per phase
  • 4-wire Bipolar or 5,6,8-wire Unipolar Motors
  • Full Step, Half Step and Quarter Step (4X micro-stepping)
  • Configurable Speed Limit
  • Acceleration / Deceleration Ramps
  • Maximum Step Rate: 10,000 steps/second

Additional Features:

  • Upper and Lower Limit switch inputs
  • Motor Idle Power Save mode
  • Motor OFF command
  • Over-current protection
  • Over-temperature protection


  • Terminal blocks for power connections
  • DB9 Serial Port for RS-232
  • SIP Header for TTL signals and Limit Switches

Technical Documents:

Datasheet (PDF) (requires Adobe Acrobat Reader)


Optical and other precision positioning systems, Automated Testing Systems, Robotics, Computer Numerical Control (CNC), Process Control, and more

Wiring Diagram:


3.0 x 4.0 x 1.0 inch tall excluding jog dial shaft.

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