Incorrect values for a few process signals for devices with a power of 15 kW or greater

Eliminated from:
StateLine / HighLine with firmware version V05.01 or higher

Behaviour of the new version?
The process signal data are correct and can be used in the application.



Which products are affected?
8400 StateLine / HighLine with a power of 15 kW or greater and with FW < 05.01

What happens?
The nStatorCurrentIS_a, nEffCurrentIq_a, and nReaktCurrentId_a process signals are miscalculated in devices with a power of 15 kW or greater. Hence, the values of the data are also incorrect.

When does the problem occur?
The nStatorCurrentIS_a, nEffCurren-tIq_a, and nReaktCurrentId_a process signals are miscalculated in all devices with a power of 15 kW or greater and in all applications.

Possible diagnostics?
Compare the nStatorCurrentIS_a process signal (16384 = 100% = C00022) to the value in C00054.

Short-term measures / recommendations?
Use the LS_ParReadWrite system block to read out the effective apparent motor current as a process signal from code C0054.

Evaluation:
The error can be avoided if the recommendations are followed.

Information taken from chapter 1.1.16 of Service Message No. 16/2010.

URL for linking this AKB article: https://www.lenze.com/en-de/go/akb/201006102/1/
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