Motor stall

What does A780 mean?

This is a programmable warning indicating a motor stall condition. The motor current has exceeded the defined stall current limit, while the output frequency or speed is below its respective limit for a set duration. This suggests the motor is overloaded or mechanically constrained, potentially leading to overheating if not addressed.

Complete Troubleshooting Guide

1. 1

   Check for any mechanical overload or obstruction preventing the motor from turning freely.

2. 2

   Verify the application's process and load conditions to ensure they are within the motor's capabilities.

3. 3

   Review and adjust parameters 31.25 (Stall current limit), 31.26 (Stall speed limit), 31.27 (Stall frequency limit), and 31.28 (Stall time) if the stall conditions are part of normal operation or require a different threshold.