Lenze 4800 Manual page 248

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8.2
With the history buffer, faults can be traced. The fault messages are stored in the
history buffer in the order of their occurrence.
8.2.1 Structure of the history buffer
( The history buffer has eight memory locations, which can be retrieved
( The first memory location is written only after the elimination or
( The memory locations 1-8 contain information about the last to eighth from
Code
C063
C066
C067
C161
C162
C163
C164
C165
C166
C167
C168
Troubleshooting and fault elimination
Fault analysis with the history buffer
- under C065, C066 and C067 at the operating unit
- via the LECOM interface under codes C161 to C168 for TRIP messages.
acknowledgement of the active fault. The eighth from last fault is eliminated
in the history buffer and can no longer be read.
last fault.
C0168
Active message
Active warning
Active TRIP
Memory location 1
Memory location 2
Memory location 3
Memory location 4
Memory location 5
Memory location 6
Memory location 7
Memory location 8
48XX/49XXSHB0399
8-3