Remedied from:
8400 StateLine, 400V devices, SW V4.00 onwards
8400 HighLine, 400V devices, SW V4.00 onwards
Behaviour of the new version?
The above-named software version rectifies this functional restriction.
Which products are affected?
8400 StateLine, 400V devices, SW ≤ V3.01
8400 HighLine, 400V devices, SW ≤ V2.01
What happens?
The degree of utilisation indicated for the brake resistor (L-C00133) is calculated incorrectly in the case of the 400 V devices (too low). As a result, the monitoring function for the brake resistor (L-C00574) can be triggered too late.
When does the problem occur?
The problem occurs in the case of the 400 V devices if a brake resistor connected to the frequency inverter is to be protected with the help of the internal monitoring function.
Possible diagnostics?
Check setting of the monitoring function of the brake resistor (L-C00574).
Short-term measures/recommendations?
None
Evaluation:
The brake resistor can be thermally overloaded. Full protection of the brake resistor can only be ensured by means of hardware monitoring (evaluation of the brake resistor's temperature detector).
Published with service message No. 2009/35
