Troubleshooting and fault elimination
Troubleshooting
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EDK82MV752 DE/EN/FR 7.2
7 Troubleshooting and fault elimination
7.1 Troubleshooting
Maloperation Cause Remedy
Motor does not rotate
DC−bus voltage too low
(red LED is blinking every 0.4 s;
keypad displays: LU)
Check mains voltage
Controller inhibited
(Green LED is blinking, keypad display: )
Deactivate controller inhibit, controller
inhibit can be set via several sources
Automatic start inhibited (C0142 = 0 or 2) LOW−HIGH edge at X3/28
If necessary, correct starting condition
(C0142)
DC−injection braking (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: ) Deactivate quick stop
Setpoint = 0 Select setpoint
JOG setpoint activated and JOG frequency = 0 Select JOG setpoint (C0037 ... C0039)
Fault active Eliminate fault
Incorrect parameter set active Change to correct parameter set via terminal
Operating mode C0014 = −4−, −5− set, but no motor
parameter identification
Identify motor parameters (C0148)
Assignment of several functions excluding each other to
one signal source in C0410
Correct configuration in C0410
Use of internal voltage source X3/20 for the function
modules Standard I/O, INTERBUS, PROFIBUS−DP, or
LECOM−B (RS485):
No jumper between X3/7 and X3/39
Jumper terminals
Motor does not rotate
smoothly
Motor cable defective Check motor cable
Maximum current set too low (C0022, C0023) Adjust settings to the application
Motor is under− or overexcited Check parameter setting (C0015, C0016,
C0014)
C0084, C0087, C0088, C0089, C0090, C0091 and/or
C0092 not adjusted to the motor data
Adjust codes manually or identify motor
parameters (C0148); optimise vector control
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 not adjusted to the motor data
Adjust codes manually or identify motor
parameters (C0148); optimise vector control
Motor rotates, setpoints
are 0"
A setpoint has been specified by the use of the function
of the keypad
Set setpoint to "0" with C0140 = 0
Motor parameter
identification stops with
error LP1
Motor is too small in relation to the rated power of the
drive
DC injection brake (DCB) active via terminal
Unacceptable drive
behaviour with vector
control
Various Optimising the vector control
Torque dip in the field
weakening range
Stalling of the motor
when operating in the
field weakening range
Various Contact Lenze
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