Solved Servo Applications

Automated Assay Machine


Automated assay machines deposit various bio-technic,-logic,-chemical liquid samples to the wells of assay trays in a controlled, automated manner for large-scale testing and analysis. The machine’s manifold location / pump operation, conveyed table speed and tray’s row / column position all need complete coordination for most efficient transfers that easily surpass 1 million per day.

Motion Needs

Velocity and position coordination of the motion as well as volume and duration control for dispensing.

Customer Requirements

High performance network communications

  • EtherCAT® already existed on other support equipment
  • Ability to communicate / connect to other work cells


  • repeatable behavior
  • Continuous tray motion with tightly metered liquid dispensing action on precise intervals

Ultra high throughput screening

  • Reliable operation with continuous throughput to maximize sample deliveries
  • No system downtime and low failure rates

Solutions Technology

Unique but standard off-the-shelf solution available

  • Reduced customer's time to market
  • EtherCAT® with ADVANCED Motion Controls' DxM Technology for highest performance and cost savings

Position-based logic output

  • Servo drive available PLS feature allowed precisely controlled, on-the-fly dispensing
  • Distributes time consuming position calculations from the controller to the drive
  • This further enhanced motion coordination and allowed increased throughput

Future machine designs

  • Established close cooperation between customer and applications engineers at ADVANCED Motion Controls for next-generation systems

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