Lenze 8200 - Fault Analysis with the History Buffer; Fault Messages; Maloperation of the Drive

Troubleshooting and fault elimination
8200SHB01998-2
8.1.3 Maloperation of the drive
Maloperation Possible causes
Motor does not rotate - DC-bus voltage too low
(Red LED is blinking every 0.4 seconds, message LU is indicated)
- 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 message is displayed (see chapter 8.3)
- Mechanical motor brake is not released
Motor does not rotate
smoothly
- Defective motor cable
- Maximum current C022 and C023 too low
- Motor underexcited or overexcited (check parameter setting)
Current consumption of
motor too high
- Setting of C016 too high
- Setting of C015 too low
- C088 and C091 are not adapted to the motor data
8.2 Fault analysis with the history buffer
The history buffer is used to trace faults. The fault messages are stored in the
history buffer in the order of their occurrence.
The memory locations can be retrieved via the codes.
Structure of the history buffer
Code Memory unit Entry Note
C161 Memory unit 1 Active fault
If the fault is no longer active or has been acknowledged:
-
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C162 Memory unit 2 Last fault
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1
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”higher” location.
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C163 Memory unit 3 Last but one fault
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- The contents of the memorylocation4 will be eliminated from
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C164 Memory unit 4 Last but two fault
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- Memory location 1 will be deleted (= no active fault).
8.3 Fault messages
Display Fault Cause Remedy
--- No fault - -
EEr External fault (TRIP-Set) A digital input assigned to the TRIP-Set
function has been activated.
Check external encoder
H05 Internal fault Contact Lenze
LP1 Motor phase failure - Failure of one or several motor
phases
- Motor current too low
Check motor cables, check V
min
setting,
connect motor with corresponding power or
adapt motor under C599.
LU Undervoltage DC-bus voltage too low - Check mains voltage
- Check supply module
OC1 Short-circuit
Short-circuit Find out cause of short circuit; check cable
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Excessive capacitive charging current of
the motor cable
Use shorter motor cables or cables with less
capacitance
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