Maloperation Of The Drive - Lenze E84AVSC Operating Instructions Manual

8400 StateLine C | Operating instructions
Diagnostics & troubleshooting

Maloperation of the drive

7.6 Maloperation of the drive
Motor does not rotate
Cause
DC-bus voltage is too low
• Red LED is blinking every 1 s
• Display in the keypad: LU
Controller is inhibited
• Green LED is blinking
• Display in the keypad:
Automatic start is inhibited
(Bit 0 in C00142 = 1)
DC-injection braking (DCB) is active
Mechanical motor brake is not released
Quick stop (QSP) is active
• Display in the keypad:
Setpoint = 0
JOG frequency = 0 at activated JOG setpoint
Trouble is active
Assignment of several mutually exclusive functions with
a signal source in C00701
Motor rotates irregularly
Cause
Motor cable is defective
Maximum motor current in motor or generator mode is
set too low
Motor is underexcited or overexcited
Rated motor data (stator resistance, speed, current,
frequency, voltage) and cos ϕ and/or magnetising
inductance is not adapted to the motor data
Motor windings are wired incorrectly
54


L
Remedy
Check mains voltage
Deactivate controller inhibit
• Note: Controller inhibit can be set via several
sources !
• C00158 displays all active sources for controller
inhibit.
LOW/HIGH edge at RFR
If required, correct starting condition with C00142
Deactivate DC injection brake
Release mechanical motor brake manually or electrically
Deactivate quick stop
• Note: Quick stop can be set via several sources!
• C00159 displays all active sources of quick stop.
Select setpoint
Set JOG setpoint in C00039/1...15
Clear fault
Correct configuration in C00701
Remedy
Check motor cable
Adjust settings to the application:
C00022: Imax in motor mode
C00023: Imax in generator mode
Check parameterisation:
C00006: Motor control
C00015: VFC: V/f base frequency
C00016: VFC: Vmin boost
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
Reverse from star connection to delta connection
from Firmware V06.00 - DMS 1.1 EN - 11/2011