Infeed: Summation current too high

What does 206210 mean?

This fault occurs when the smoothed total of the phase currents (i1 + i2 + i3) exceeds 4% of the maximum power unit current (r0209). Primary causes include a ground fault in the DC link leading to high summation current, unperformed zero point calibration of current measurement, or a defective current measurement in the power unit. A high DC component in line currents can severely damage the power unit, line reactor, or line filter if left unaddressed, posing a risk of component failure.

Complete Troubleshooting Guide

1. 1

   Check for a ground fault in the DC link, which can be indicated by parameter r0069.6. Isolate and rectify any ground faults found.

2. 2

   Perform the zero point calibration of the current measurement using parameter p3491. Refer to alarm A06602 if applicable for guidance.

3. 3

   Verify the functionality and accuracy of the current measurement sensors in the power unit. Replace the power unit if current measurement is found to be defective.

4. 4

   Inspect the power unit, line reactor, and line filter for any signs of damage (e.g., discoloration, burnt smell) that might have resulted from high DC components.