Lenze 8400 StateLine - Manual (Page 114)

5 Motor control (MCTRL)
5.1 Motor selection/Motor data
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Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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Preconditions for executing the motor parameter identification
• The motor parameter identification must be carried out when the motor is cold!
• The load machine may remain connected. Holding brakes, if present, may remain in the braking
position.
• In case of a synchronous motor:
• The shaft must be able to rotate freely (must not be locked).
• An identification is only possible with the extended motor parameter identification.
• For an asynchronous motor from a power of 11 kW:
An identification is only possible with the extended motor parameter identification.
• The controller has to be ready for enable (has to be in the " SwitchedOn " state).
Inhibit the controller if it is enabled, e.g. via the C00002/16 device command or a LOW signal at
the X4/RFR terminal.
• The motor has to be at standstill.
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
( 118)
• 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.
Parameter 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