Lenze 8400 - Page 145

Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 145
5 Motor control (MCTRL)
5.1 Motor selection/Motor data
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Required parameter settings before the motor parameter identification is executed
• For an extended
motor parameter identification, a motor control suitable for the motor has to
be set in C00006
. When the identification starts, this setting determines whether an
asynchronous motor or a synchronous motor has to be identified. Selecting the control mode
( 149)
• The motor parameters listed in the table below are excluded from automatic identification and
must therefore be adapted to the used motor before motor parameter identification is carried
out (see motor nameplate).
• If the motor nameplate data are entered in the »Engineer« motor catalogue instead of selecting
a motor, it is recommendable to use the extended motor parameter identification
(C02867/1
= "2: extended identification").
• Especially for third-party motors, it is also recommendable to carry out the slip calculation with
the motor equivalent circuit diagram data (C02879/1
). If the slip calculation is derived from the
motor nameplate data, this can negatively affect the stability and accuracy of the drive
behaviour because the rated speed specified on the motor nameplate often is rather inaccurate.
• The available motor cable must be specified in terms of length and cross-section:
The motor cable resistance resulting from these settings is displayed in C00917
.
• For the measurement of the required variables, the motor is energised via the inverter terminals
U, V and W during the motor parameter identification. The corresponding current controller is
preset in the Lenze setting so that a optimal controller behaviour is achieved with an
asynchronous motor power-adapted to the inverter.
Thanks to optimisation, the current controller can be set via the following parameters:
Parameters Info
C00081
Rated motor power
C00087
Rated motor speed
C00088
Rated motor current (according to the connection method /)
NoteThe amplitude of the rated motor current (C00088
) is injected to identify the stator
resistance. If the rated motor current amounts to less than 60 % of the rated inverter current,
at least 60 % of the rated inverter current will be injected to ensure sufficient motor
parameter identification accuracy.
C00089
Rated motor frequency (according to the connection method /)
C00090
Rated motor voltage (according to the connection method /)
C00091
Motor cos ϕ
Parameters Info
C00915
Motor cable length
C00916 Motor cable cross-section
Parameters Info Lenze setting
Value Unit
C00075 Vp current controller 7.00 V/A
C00076
Ti current controller 10.61 ms