Brake resistor power limit

What does 26 mean?

This warning/alarm indicates that the average power dissipated by the brake resistor over the last 120 seconds has exceeded 90% of its rated capacity. The calculation is based on the DC-link voltage and the brake resistor value set in parameter 2-16 (AC brake Max. Current). If parameter 2-13 (Brake Power Monitoring) is configured for [2] Trip, the drive will fault and stop when the dissipation reaches 100%, signifying continuous excessive braking and potential overheating of the resistor.

Complete Troubleshooting Guide

1. 1

   Analyze the application's braking requirements and operating profile to identify why the brake resistor is consistently dissipating excessive power.

2. 2

   Ensure that the brake resistor value configured in parameter 2-16 (AC brake Max. Current) accurately matches the installed physical resistor's specifications.

3. 3

   Consider installing a brake resistor with a higher power rating or a larger duty cycle if the application genuinely demands frequent or heavy braking.

4. 4

   Check the DC-link voltage during braking events to ensure it is within expected operational limits and not contributing to excessive power dissipation.