SSF

Torque/Current Limitation Fault

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does SSF mean?

A torque/current limitation detected fault. This indicates that the drive's output torque or current has hit its predefined limit, typically due to an overload condition or an attempt to accelerate too quickly. While a protection feature, persistent limitation can indicate an undersized system or mechanical issue.

Complete Troubleshooting Guide

  1. 1

    Inspect the mechanical load for binding, obstructions, or excessive inertia.

  2. 2

    Review the drive's torque and current limit parameters, ensuring they are appropriate for the application.

  3. 3

    Increase acceleration/deceleration ramp times to reduce peak current demands.

  4. 4

    Verify that the motor and drive are appropriately sized for the application's demands.