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PC78 Multi-Axis Motion Controller

Item No: PC78

The PC78 is both a PC/104 motion controller that conforms to the PC/104 ISA bus standard as well as a stand-alone controller via a RS232 communication port. The PC78 controls up to 4 axes of step and direction control or +/-10 V servo control. There are up to 12 general-purpose TTL I/O bits, 8 of which are user definable. Non-volatile memory macros store programs that can be executed via a command or programmed to an I/O bit signal. The step pulse is a TTL level 50% duty cycle square wave that supports velocities of 0 to 1,044,000 pulses per second.

The encoder feedback functionality supports quadrature encoders up to 12 MHz at a 4 times the encoder line resolution and is used as closed-loop feedback for the servo and stepper axes or as independent position feedback. The encoder feedback can provide slip and/or stall detection with programmable dead-band. Each axis includes dedicated +/- over-travel inputs, a home input, and an auxiliary output. The controller measures 3.5"x3.75" for compact applications. The PC78 was designed for expandability and incorporates an external board-to-board connector for custom daughter board development.

Models:

PC78-25 2 servo axes
PC78-26 2 closed-loop (encoder)/open-loop stepper axes
PC78-45 4 servo axes
PC78-46 4 closed-loop (encoder)/open-loop stepper axes

Features:

  • 4 axes of stepper control with encoder feedback or servo control
  • Encoder feedback to 12 MHz
  • PC/104 bus
  • Stand-alone with RS232 port with baud rates of 9600 to 18.2 K
  • 16-bit DAC analog resolution
  • Circular interpolation
  • Custom, parabolic, cosine, linear trajectory profiles
  • Patented technology to minimize torque ripple and velocity modulation
  • Internal watchdog timer for safety
  • Field upgradeable firmware within Windows® operating systems
  • Non-volatile program storage and parameter storage
  • Single high-density shielded SCSI type connector
  • Up to 12 user I/O
  • Dedicated home and +/- over-travel inputs for each axis
  • Over 150 commands, universal to all OMS controllers
  • Software supplied at no additional cost
  • Customizable solutions available for your requirements

Accessories:

  • IO68-M: I/O breakout board for PC78 motion controllers
  • CBL68-10: 10 ft cable w/mating connector 68-pin, (IO68/PC78)
  • CDSWSUPP: DLLs and drivers for Windows® NT, 95, 98, 2000, and XP
  • CDMAN: Electronic manual; 1 per shipment provided

PDF Documents

Download SpecificationsDownload Data Sheet