Parameter Reference C-23
AC30 series Variable Speed Drive
Functional Description
You MUST carry out an Autotune if you intend to use the drive in vector control mode. If you are using it in
Volts/Hz control an Autotune is not necessary.
Autotune can only be initiated from the “stopped” condition. When the test is complete, the stack is disabled and Autotune Enable is set to FALSE.
Note Refer to the Chapter 6: Setup Wizard for details on how to perform an Autotune.
Standard Autotune
If an induction motor is fitted, the autotune will identify parameters as follows.
Not measured by Stationary Autotune
Per phase stator resistance
Per phase stator leakage inductance
Per phase mutual inductance
This will be identified while the motor is spinning, while measuring the
magnestising current. If stationary autotune is selected, it will be
identified from magnetising current and motor nameplate rpm
♦ The Rotating autotune sequence rotates the motor up to the user-programmed MAX SPEED (Scale Setpoint function) in order to
identify these parameters. (A rotating autotune is required if the motor is to be operated above base speed).
♦ The Stationary autotune sequence does not rotate the motor and requires the correct value of MAG CURRENT to be entered.
(Stationey Autotune should only be considered if roatating autotune is not possible to execute).
If a permanent magnet motor is fitted, the autotune will identify parameters as follows.
Phase to phase stator resistance
Phase to phase stator leakage inductance
This will be identified while the motor is spinning. If stationary autotune
is selected, it will be identified from motor nameplate parameters
♦ The Stationary autotune sequence does not rotate the motor and requires the correct permanant magnet nameplate value to be
entered.
♦ The Rotating autotune sequence rotates the motor up to the half of the rated motor speed in order to identify these parameters.
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