Lenze EVF9324

Troubleshooting and fault elimination
Troubleshooting
Error analysis with the history buffer
9
9.2
9.2.2

9.2-2
EDSVF9333V EN 3.0-06/2005
Structure of the history buffer
Code Memory unit Entry Note
C0168/1 C0169/1 C0170/1 Memory unit 1 Active fault
If the fault is not available anymore or has
been acknowledged:
z The contents of the memory locations 1 ... 7
are moved one memory location ”higher”.
z The contents of memory location 8 is
deleted from the history buffer and cannot
be retrieved anymore.
z Memory location 1 is deleted (= no active
fault).
C0168/2 C0169/2 C0170/2 Memory unit 2 Last fault
C0168/3 C0169/3 C0170/3 Memory unit 3 Second to last fault
C0168/4 C0169/4 C0170/4 Memory unit 4 Third last fault
C0168/5 C0169/5 C0170/5 Memory unit 5 Fourth-last fault
C0168/6 C0169/6 C0170/6 Memory unit 6 Fifth-last fault
C0168/7 C0169/7 C0170/7 Memory unit 7 Sixth-last fault
C0168/8 C0169/8 C0170/8 Memory unit 8 Last but six fault
Explanations regarding the codes
C0168 Fault recognition and response to the reaction
z The entry is done as a LECOM error number
z If several fault with different reactions occur at the same time:
– Only the fault is entered the reaction of which has the highest priority
(1.TRIP,2.message,3.warning).
z If faults with the same reactions occur (e.g. 2 messages):
– Only the fault which occurred first is entered.
C0169 Time of the fault
z Reference time is the status of the power-on time meter (C0179).
z If a fault is immediately f ollowed by another fault for several times, only
thetimeofthelastoccurrenceisstored.
C0170 Frequency of the fault
z Thetimeofthelastoccurrenceisstored.
Set C0167 = 1 to delete the history buffer.
Delete history buffer