Toshiba AS3 vs Other Low Voltage Adjustable Speed Drives

This side-by-side comparison scorecard highlights the advantages of Toshiba’s AS3 Low Voltage Adjustable Speed Drive (ASD) over other popular low voltage ASDs. It provides detailed specifications across overload capacity, dynamic braking, input/output, V/Hz functions, and more—helping engineers, integrators, and maintenance professionals make informed decisions.

Key Points

  • Overload Capability: Toshiba AS3 supports 150% overload for 1 minute (HD) and 120% for 1 minute (ND), outperforming standard ASDs.
  • Connections & Protocols: Offers dual-port Modbus and Toshiba protocols with encoder feedback, surpassing single-port alternatives.
  • Advanced V/Hz Modes: Includes Constant, Variable, Energy Saving, and Vector Control modes—more versatile than typical ASDs.
  • Compatibility: Optional safety modules and encoder feedback make it ideal for precision and safety-critical installations.
  • Dynamic Braking: Integrated IGBT7 braking with standard inclusion on most AS3 frames, unlike competitors that lack this feature.
  • Flexible Frequency Ranges: AS3 supports wide carrier frequency ranges from 1–16 kHz depending on frame size.
  • Input/Output: 8 digital inputs, multiple feedback options, and optional safety modules give the AS3 system flexibility for demanding applications.
  • Better Default Parameter Management: Improved user control and parameter settings compared to generic drive models.