Lenze L-force HighLine C 8400 Series Reference Manual page 578

8400 HighLine C | Reference manual
Diagnostics & error management
Maloperation of the drive
Maloperation
Motor consumes too
much current
Motor parameter
identification is
aborted with error
LP1
Drive behaviour with
vector control is not
satisfactory
Torque dip in field
weakening range
or
motor stalling when
being operated in the
field weakening
range
An asynchronous
motor with feedback
rotates without
control and with too
low speed
Motor phase (LP1)
monitoring does not
respond if the motor
phases are
interrupted
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Cause
V boost has been selected too high
min
V/f base frequency has been selected too low Correct setting with
Rated motor data (stator resistance, speed,
current, frequency, voltage) and cos ϕ
and/or magnetising inductance is not
adapted to the motor data
Motor is too small compared to the rated
device power (>1 : 3)
DC injection brake (DCB) is active via
terminal
different
Motor is overloaded
Motor windings are wired incorrectly
V/f reference point is set too high
Override point of field weakening is set too
low
Mains voltage is too low
Motor phases have been interchanged
• Thus the rotating field of the motor is not
identical anymore with the rotating field
of the feedback system.
• Therefore, the drive shows the following
behaviour if V/f characteristic control
(C00006 = 7) is performed:
– The motor rotates faster than the speed
setpoint by the value set in C00074.
– After the controller has been enabled,
the controller will not stop if the speed
setpoint = 0 or a quick stop (QSP) occurs.
– Among other things, the final motor
current depends on the value set for the
V boost and may rise up to I
min
can trigger the "OC5: Ixt overload" fault
message.
Monitoring is not active (C00597
L
Remedy
Correct setting with
Execute automatic motor parameter
identification with the
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
Use device with lower rated power
Deactivate DC injection brake
Optimise or manually adapt vector control
Execute automatic motor parameter
identification with the
command
Check motor load
Reverse from star connection to delta
connection
Correct setting with
Correct setting with
Increase mains voltage
Check the phase position of the motor cable
If possible: Operate the motor with
deactivated feedback
direction of rotation of the motor
which
max
= 0) Activate monitoring
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
C00016
C00015
C00002/23 device
C00002/23 device
C00015
C00080
(C00006 = 6) and check
(C00597 = 1)