Auto-Tuning - YASKAWA L1000A Technical Manual

4.5 Auto-Tuning

4.5 Auto-Tuning
WARNING! Sudden Movement Hazard. The drive and motor may start unexpectedly during Auto-Tuning, which could result in death or
serious injury. Ensure the area surrounding the drive motor and load are clear before proceeding with Auto-Tuning. Remove main
power from the drive before servicing the drive or motor. Do not touch the motor during Auto-Tuning.
Note: When using a PM motor for the first time, or when replacing the drive or PM motor, always make sure that motor parameters are
set properly and the speed detection functions accurately prior to operation. Using a PM motor requires that the encoder offset be
set correctly in addition to entering motor data to corresponding parameters. If the motor, encoder, or drive are ever replaced, be
sure to perform Encoder Offset Auto-Tuning.
Insufficient torque can cause the elevator car to move in the direction of the load, or cause the motor to behave erratically
(reverse operation, stand still, sudden accelerations, etc.).
For more information, refer to the instruction manual included with the motor.
◆ Types of Auto-Tuning
The drive offers different types of Auto-Tuning for induction motors and permanent magnet motors. The type of Auto-
Tuning used differs further based on the control mode and other operating conditions. Refer to the tables below to select
the type of Auto-Tuning that bests suits the application. Directions for performing Auto-Tuning are listed in
Flowcharts on page 96.
Note: The drive will only show Auto-Tuning parameters that are valid for the control mode that has been set in A1-02. If the control
mode is for an induction motor, the Auto-Tuning parameters for PM motors will not be available. If the control mode is for a PM
motor, the Auto-Tuning parameters for induction motors will not be available. Inertia Tuning and ASR Gain Tuning parameters
and setting options will be visible only when the drive is set for operation with CLV or CLV/PM.
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Auto-Tuning for Induction Motors
NOTICE: Equipment Hazard. Auto-Tuning will not function properly if a holding brake is engaged on the load. Failure to comply could
result in improper operation of the drive. Ensure the motor can freely spin before beginning Auto-Tuning.
This feature automatically sets the V/f pattern and motor parameters E1-
Additionally, the feature also sets some F1-
Type Setting
Rotational Auto-Tuning T1-01 = 0
Stationary Auto-Tuning 1 T1-01 = 1
Stationary Auto-Tuning
for Line-to-Line Resis-
T1-01 = 2
tance
T1-01 = 4
Stationary Auto-Tuning 2
Table 4.6 lists the data that must be entered for Auto-Tuning. Make sure this data is available before starting Auto-
Tuning. The necessary information is usually listed on the motor nameplate or in the motor test report provided by the
motor manufacturer. Also refer to pages
104
parameters for speed feedback detection in Closed Loop Vector.
Table 4.5 Types of Auto-Tuning for Induction Motors
Requirements and Benefits
• Rotational Auto-Tuning gives the most accurate results, and is recommended if possible.
• Motor must run freely or with light load (<30%), i.e. ropes have to be removed.
• A motor test report listing motor data is not available.
• Automatically calculates motor parameters needed for vector control.
• Use if ropes can not be removed. Note that the accuracy is less then with Rotational Auto-Tuning.
• Used for V/f Control or in vector control modes when the drive was previously set up properly and now
the motor cable has changed.
• Used in V/f control if drive and motor capacities differ.
• Should not be used for any vector control modes unless the motor cable has changed.
• A motor test report is available. Once the no-load current and the rated slip have been entered, the drive
calculates and sets all other motor-related parameters.
• Use if ropes can not be removed and if slip and no-load current data are available.
97 and 101 for details on Auto-Tuning process and selections.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
and E2- for an induction motor.
Control Mode (A1-02)
V/f (0)
No
No
Yes
No
Start-Up
OLV (2) CLV (3)
Yes Yes
Yes Yes
Yes Yes
Yes Yes