Internal current thresholds are too low for single-phase devices (eliminated from V5.0 onwards)

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

Behaviour of the new version?
The Ixt monitoring is not triggered ahead of time

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Which products are affected?
8400 StateLine / HighLine with FW < 05.01

What happens?
If C0173 > 0, Ixt and switching frequency-dependent current thresholds are too low for single-phase devices, and as a consequence the inverter reports an overload (Ixt warning) before this is actually the case.

When does the problem occur?
If mains voltages > 400 V, three-phase, or 230 V, single-phase, (C0173 > 0) are selected, the derating factor is also considered in the Ixt function for 230 V devices.

Possible diagnostics?
Ixt monitoring is triggered ahead of time

Short-term measures / recommendations?
Set C0173 to 0 for single-phase devices (default value)

Evaluation:
The error is likely to occur during commissioning and can be avoided if the recommendations are followed.

Information taken from chapter 1.1.9 of Service Message No. 16/2010.