Maloperation Of The Drive; Fault Analysis Using The History Buffer - Lenze 8201 Operating Instructions Manual

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Troubleshooting and fault elimination
8.1.3

8.2 Fault analysis using the history buffer

8-2
820XBA1097

Maloperation of the drive

Maloperation Possible causes
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Motor does not rotate
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Motor does not rotate
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smoothly
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Current consumption of
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motor too high
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The history buffer is used to trace faults. The fault messages are
stored in the history buffer in the order of their occurrence.
The history buffer has 4 memory locations which can be addressed
via codes.
Structure of the history buffer
Code C0168 Entry
C161 Memory locations 1 Active fault
C162 Memory location 2 Last fault
C163 Memory location 3 Last but one fault
Last but two fault
C164 Memory location 4
DC-bus voltage too low
(red LED is blinking every 0.4 s; message LU is displayed)
Controller inhibited
(green LED is blinking, display of the operating module: OFF,
STOP or AS_LC)
Setpoint = 0
DC braking active
Quick-stop function active
JOG setpoint activated and JOG frequency = 0
Fault is indicated (see chapter 8.3 )
Mechanical motor brake is not released
Defective motor cable
Maximum current C022 and C023 too low
Motor underexcited or overexcited (check parameter setting)
Setting of C016 too high
Setting of C015 too low
C088 and C091 are not adapted to the motor data.
Note
If the fault is no longer active or has been
acknowledged: acknowledged:
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The contents of the memory locations 1-3 will be
saved in a "higher" location. saved in a "higher" location.
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The contents of the memory location 4 will be The contents of the memory location 4 will be
eliminated from the history buffer and cannot be eliminated from the history buffer and cannot be
read any longer.
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Memory location 1 will be deleted (= no active fault).