Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011 L 399
8400 StateLine C | Reference manual
Diagnostics & error management
Maloperation of the drive
Motor rotates
although setpoint is
"0"
The setpoint is selected via the analog input
(open-circuited if required).
The analog input has a tolerance of ± 1 % and
is a bipolar input in contrast to the 8200
vector. For this reason, no dead band is set in
the Lenze setting.
With a setpoint selection of 0.3 %, a speed of
4.5 rpm can arise (at reference speed
= 1500 rpm). As the auto-DCB threshold in
C00019
is set to 3 rpm, the speed oscillates
between 0 and 4 rpm.
Set dead band for the analog input in
C00010/2
and C00010/4 (see chapter "Signal
adaptation by means of characteristic")
- or -
Increase auto DCB threshold in C00019
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
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 parameter
identification is
aborted with error
LP1
Motor is too small compared to the rated
device power (>1 : 3)
Use device with lower rated power
DC injection brake (DCB) is active via
terminal
Deactivate DC injection brake
Drive behaviour with
vector control is not
satisfactory
different Optimise or manually adapt vector control
Execute automatic motor parameter
identification with the C00002/23
device
command
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
connection
V/f reference point is set too high Correct setting with C00015
Override point of field weakening is set too
low
Correct setting with C00080
Mains voltage is too low Increase mains voltage
Maloperation Cause Remedy
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