8400 StateLine C | Operating instructions
Diagnostics & troubleshooting
Maloperation of the drive
54 L from Firmware V06.00 - DMS 1.1 EN - 11/2011
7.6 Maloperation of the drive
Motor does not rotate
Motor rotates irregularly
Cause Remedy
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 of quick stop.
Setpoint = 0 Select setpoint
JOG frequency = 0 at activated JOG setpoint Set JOG setpoint in C00039/1...15
Trouble is active Clear fault
Assignment of several mutually exclusive functions with
a signal source in C00701
Correct configuration in C00701
Cause Remedy
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
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