Lenze 8400 motec - Manual (Page 295)

Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05 295
9 Diagnostics & error management
9.7 Maloperation of the drive
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Motor rotates irregu-
larly
Motor cable is defective Check motor cable
Maximum motor current in motor or genera-
tor mode is set too low
Adjust settings to the application: C00022:
Imax in motor mode
C00023 : Imax in generator mode
Motor is underexcited or overexcited Check parameterisation:
C00006 : Motor control
C00015 : VFC: V/f base frequency
C00016 : VFC: Vmin boost
Rated motor data (stator resistance, speed,
current, frequency, voltage) and cos ϕ and/
or magnetising inductance is not adapted to
the motor data
Execute automatic motor parameter identifi-
cation with the C00002/23 device command
- or -
Adjust motor parameters manually:
C00084 : Motor stator resistance
C00087 : Rated motor speed
C00088 : Rated motor current
C00089 : Rated motor frequency
C00090 : Rated motor voltage
C00091 : Motor cosine phi
C00092 : Motor magnetising inductance
Motor windings are wired incorrectly Reverse from star connection to delta con-
nection
Motor consumes too
much current
V
min
boost has been selected too high Correct setting with C00016
V/f base frequency has been selected too low Correct setting with C00015
Rated motor data (stator resistance, speed,
current, frequency, voltage) and cos ϕ and/
or magnetising inductance is not adapted to
the motor data
Execute automatic motor parameter identifi-
cation with the C00002/23 device command
- or -
Adjust motor parameters manually:
C00084 : Motor stator resistance
C00087 : Rated motor speed
C00088 : Rated motor current
C00089 : Rated motor frequency
C00090 : Rated motor voltage
C00091 : Motor cosine phi
C00092 : Motor magnetising inductance
Motor parameter
identification is
aborted with error
LP1
Motor is too small compared to the rated de-
vice power (>1 : 3)
Use device with lower rated power
DC-injection braking (DCB) is active via ter-
minal
Deactivate DC-injection braking
Drive behaviour with
vector control is not
satisfactory
different Optimise or manually adapt vector control
 Sensorless vector control (SLVC)
Execute automatic motor parameter identifi-
cation with the C00002/23 device command
 Automatic motor data identification
Torque dip in field
weakening range
or
motor stalling when
being operated in the
field weakening
range
Motor is overloaded Check motor load
Motor windings are wired incorrectly Reverse from star connection to delta con-
nection
V/f base frequency is set too high Correct setting with C00015
Mains voltage too low Increase mains voltage
Parameter changes
are not accepted
Settings according to DIP1, DIP2, P1, P2 and
P3 are active (local mode)
Set DIP1/switch 1 to "OFF" in order that no
parameters of the memory module are over-
written when the device is started.
• See display parameters C01911 and
C01912 for details.
Maloperation Cause Remedy