Upgrading to Toshiba’s AS3 Series Adjustable Speed Drive

This guide assists users transitioning from earlier Toshiba adjustable speed drives (ASDs) to the modern AS3 series. It outlines terminal updates, control and programming differences, and physical size variations to ensure a smooth upgrade process. The document is particularly useful for electrical engineers, system integrators, and maintenance personnel involved in ASD upgrades.

Key Points

  • Terminal Mapping Changes: Detailed terminal board overview showing updated connections and functions compared to previous drive generations.
  • Programming Updates: Includes a parameter translation table for AS1 and 9-series to AS3 parameter codes.
  • Drive Logic Default Settings: Notes on default logic state (PLC vs SINK) for correct integration.
  • Form Factor Adjustments: Extensive tables comparing AS3 dimensions to AS1, G9, and H9 drive models across horsepower ranges.
  • New Safety Features: Introduction of Safe Torque Off (STO) terminals replacing older ST logic.
  • Digital Input Expansion: AS3 adds new digital input capabilities for expanded preset speed selections.
  • Parameter Migration Guidance: Best practices for transferring drive parameters using ASD Pro software or manual entry.
  • Model Reference Table: Model-by-model comparison for ND (normal duty) and HD (heavy duty) AS3 units.