9 Diagnostics & error management
9.5 Logbook
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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9.5 Logbook
The integrated logbook function of the inverter chronologically logs important events within the
system and plays an important role for troubleshooting and inverter diagnostics.
Events that can be logged
The following events can be logged in the logbook:
• Error messages of the operating system
( 647)
• Error messages generated by the application (via LS_SetError
)
• Loading/saving of parameter sets, loading of the Lenze setting (in preparation)
• Transmitting the firmware to the inverter (in preparation)
• Switching on/off of the inverter
Information saved
For each event, the following information is saved in the logbook:
• Type of response to the event (e.g. fault, warning or information)
• Subject area that activated the event (e.g. CAN or USER).
•Event
• Value of power-on time meter
• Selected process values (analog % signals, binary signals)
Memory depth
Maximum number of logbook entries:
• 8400 StateLine: 15 logbook entries
• 8400 HighLine/TopLine: 50 logbook entries
9.5.1 Functional description
The structure of the logbook corresponds to a ring buffer:
• As long as free logbook memory is available, the entry is placed in
the next free position within the memory ().
• If all memory units are assigned, the oldest entry () is deleted for
a new entry.
• The newest entries will always remain available.
Note!
In the event of a supply voltage failure, the logbook is saved and reloaded automatically
when the inverter is switched on. This ensures that the error history of the device does
not get lost. For this reason it is very important to act with caution when deleting the
logbook entries.
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