Eliminated from:
Inverter Drives 8400 StateLine, HighLine and TopLine from firmware version 12.00.00.00
Behaviour of the new version?
The analog signals are now only filtered with the time configured in C0440/1+2. This time can also be parameterised to zero.
Which products are affected?
Inverter Drives 8400 StateLine, HighLine and TopLine with a firmware version lower than 12.00.00.00
What happens?
Analog signals are always filtered with a filter time of at least 3 ms. Via C0440/1+2, the filter time can only be increased.
When does the problem occur
For all signals measured via the analog inputs.
Diagnostics options?
A signal step at the analog input in the inverter can only be measured with a typical PT1 characteristic at the LS_AnalogInput.
Short-term measures/recommendations?
None.
Evaluation:
Fast signal changes cannot be recorded via the analog input. In practice, the input signal must typically be filtered with a filter time >2ms to suppress interference injections.
It is difficult to diagnose the restriction.
