Lenze 8400 StateLine - Manual (Page 440)

9 Diagnostics & error management
9.7 Maloperation of the drive
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Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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9.7 Maloperation of the drive
Maloperation Cause Remedy
Motor does not
rotate
DC-bus voltage is too low
• Red LED is blinking every 1 s
• Display in the keypad: LU
Check mains voltage
Controller is inhibited
• Green LED is blinking
• Display in the keypad: 
Deactivate controller inhibit
• Note: Controller inhibit can be set via
several sources !
• C00158 displays all active sources for
controller inhibit.
Automatic start is inhibited
(Bit 0 in C00142 = 1)
LOW/HIGH edge at RFR
If required, correct starting condition with
C00142
DC-injection braking (DCB) is active Deactivate DC injection brake
Mechanical motor brake is not released Release mechanical motor brake manually or
electrically
Quick stop (QSP) is active
• Display in the keypad: 
Deactivate quick stop
• Note: Quick stop can be set via several
sources!
• C00159 displays all active sources for
quick stop.
Setpoint = 0 Select setpoint
JOG frequency = 0 at activated JOG setpoint Set JOG setpoint in C00039/1...15
Fault active Clear fault
With C00006 = 4, "SLVC: Vector control" has
been set, but no motor parameter
identification has been carried out.
Execute automatic motor parameter
identification with the C00002/23 device
command
Assignment of several mutually exclusive
functions with a signal source in C00701
Correct configuration in C00701
Motor rotates
irregularly
Motor cable is defective Check motor cable
Maximum motor current in motor or
generator 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
identification 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
connection