Intelligent Motion Control Since 1987

DCX-VM 300 Series Specifications
  Form Factor & Processor
  • 6U double-width VME-bus card
  • Modular multi-processor architecture
  • Motherboard: Intel 32-bit CPU with 64-bit floating point co-processor
  • Axis Modules: 40 MHz Texas Instruments DSP & FPGA on each module
  Communication
  • ASCII communication
  • High speed binary communication via dual-ported RAM
  Programming
  • Programmable with easy-to-use motion command language
  • Programmable in user units (mm, microns, ft./sec...etc.)
  • Contact PMC for Operating System support
  Motion Capabilities
  • 1 to 6 control axes per card
  • AC/DC servo and/or stepper motor control
  • Point-to-point positioning
  • Multi-axis synchronized & coordinated motion
  • Trapezoidal, parabolic and S-curve velocity profiles
  • Independent acceleration & deceleration
  • Multi-axis linear & circular interpolation
  • High-resolution electronic gearing
  • Position, velocity and gain control modes
  • Backlash compensation
  • Target, velocity, acceleration/deceleration & PID parameters can be changed on-the-fly
  • Custom motion capabilities available upon request
  Memory
  • 64K user program memory
  • 256 general purpose user registers (variables)
  Dynamic Range
  • Position: 64 bit floating point
  • Velocity and acceleration: 64 bit floating point
  Servo Control Signals
  • ±10V command signal with 16-bit DAC resolution (DCX-MC300 Module)
  • Pulse & direction signals for pulse-controlled servo drives: 5MHz maximum pulse rate each axis
  • Sinusoidal output for commutation of AC servo motors (DCX-MC320 Module)
  Servo Filter
  • Proportional/Integral/Derivative with acceleration, deceleration & velocity feed forward (PID-FF)
  • Custom notch filtering
  • Selectable servo update rate 2, 4, & 8 KHz (up to 6 axes)

  Stepper Control Signals
  • Pulse/direction or CW/CCW stepper control (DCX-MC360 Module)
  • 5 MHz maximum step (pulse) rate each axis (up to 16 axes)
  • Full step, half-step and microstepping control, full and half current
  • 50% pulse train duty-cycle at all pulse rates
  • Open or closed-loop stepper control
  Position Feedback
  • Quadrature incremental encoder with index
  • 10 MHz encoder count rate for each axis (up to 16 axes)
  • Single-ended or differential inputs (A+, A-, B+, B-, I+, I-)
  • Digital noise filtering
  • Auxiliary encoders
  • 32-bit position resolution
  Dedicated I/O (each axis)
  • Axis inputs: Opto-isolated home, ± limits, amp fault
  • Axis outputs: Opto-isolated amp enable, step direction
  • Position capture input (less than 0.5 microsecond latency)
  • Position compare output (less than 0.5 microsecond latency, 10 microsecond opto-isolator delay)
  General Purpose I/O
  • 16 digital I/O on motherboard, individually software configurable as input/output
  • Up to 128 additional configurable digital I/O via DCX-MC400 plug-in modules
  • Up to 64 additional analog I/O, 12-bit resolution, via DCX-MC500 plug-in modules
  Other Features
  • Programmable in user units
  • On-board memory for user program storage
  • On-board watchdog timer with external or PC-bus reset
  • Custom features or performance available upon request
  Connections
  • 26 pin dual-row IDC ribbon header for each axis module and I/O module
  • Dual-row IDC ribbon header for on-board general-purpose digital I/O
  • VME P2 connector can also be used for I/O connections
  • External interconnection boards available with individually labeled screw terminals
  Environmental & Mechanical
  • Operating temperature: 0-55 ºC (32-131 ºF) R.H. non-condensing
  • Size: 314mm x 107mm (12.3" x 4.2")