Troubleshooting and fault elimination
Error messages
8−3
L EDB82MV752 EN 5.2
8.4 Error elimination
8.4.1 Maloperation of the drive
Fault Cause Remedy
Motor does not rotate DC−bus voltage too low
(Red LED is blinking every 0.4 s;
keypad display LU)
Check mains voltage
Controller inhibited
(Green LED is blinking, keypad display: )
Remove the controller inhibit, controller inhibit can be set
through several sources
Automatic start inhibited (C0142 = 0 or 2) LOW−HIGH edge at X3/28
If necessary, correct start condition (C0142)
DC injection brake (DCB) active Deactivate DC injection brake
Mechanical motor brake is not released Manual or electrical release of mechanical motor brake
Quick stop (QSP) active (keypad display: ) Remove quick stop
Setpoint = 0 Select setpoint
JOG setpoint activated and JOG frequency = 0 Select JOG setpoint (C0037 ... C0039)
Active fault Eliminate fault
Wrong parameter set active Change to correct parameter set via terminal
Operating mode C0014 = −4−, −5−, but no motor parameter
identification executed
Motor parameter identification (C0148)
Under C0410 several functions which exclude each other, are assigned
to the same signal source.
Correct configuration in C0410
Use of internal voltage source X3/20 for function modules Standard I/O,
INTERBUS, PROFIBUS−DP or LECOM−B (RS485):
Jumper between X3/7 and X3/39 is missing
Jumper terminals
Motor does not rotate
smoothly
Defective motor cable Check motor cable
Maximum current set too low (C0022, C0023) Adapt settings to the application
Motor underexcited or overexcited Check parameter setting (C0015, C0016, C0014)
C0084, C0087, C0088, C0089, C0090, C0091 and/or C0092 are not
adapted to the motor data
Manual adaptation or identification of motor parameters
(C0148)
Current consumption of
motor too high
Setting of C0016 too high Correct setting
Setting of C0015 too low Correct setting
C0084, C0087, C0088, C0089, C0090, C0091 and/or C0092 are not
adapted to the motor data
Manual adaptation or identification of motor parameters
(C0148)
Motor rotates, setpoints are
0"
With the function of the keypad a setpoint has been selected. Set the setpoint to "0" via C0140 = 0
Motor parameter
identification stops with
error LP1
Motor too small compared with rated device power
DC injection brake active via terminal
Unacceptable drive response
with vector control
various Optimise vector control ( 7−9)
Torque dip in the field
weakening range
various Contact Lenze
Stalling of the motor when
operating in the field
weakening range
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