Hardware Revision - Lenze 8400 Hardware Manual

10 Safety engineering

Hardware revision

10.6 Hardware revision
The integrated safety of the 8400 controllers is implemented with two hardware versions.
The previous hardware ...
has no labelling (up to "1B").
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has to be assigned to the data with the reference to HW revision: up to 1B.
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The revised hardware ...
Is clearly labelled on the side with a sticker, e.g. "HW: 2A".
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has to be assigned to the data with the reference to HW revision: from 2A.
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is functionally compatible with the previous hardware.
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comes with changed technical data.
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Revision 2A has a slightly lower PFH value (compared to the revision up to 1B).
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Hence, the hardware requires approx. 0.9 % of the maximum PFH value of the total
safety chain. For all the other components of the safety chain, only 99.1 % (instead
of 100 % so far) of the PFH value is available. Although the PFH value given here is
negligible, we recommend a check of the executed calculation of the safety chain
and, if required, a correction of the safety-related parameters.
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EDS84ASC552 EN 10.0