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
Start-Up Flowcharts on page
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.
Auto-Tuning for Induction Motors
■
This feature automatically sets the V/f pattern and motor parameters E1- and E2- for an induction motor.
Additionally, the feature also sets some F1- parameters for speed feedback detection in Closed Loop Vector.
Type Setting
T1-01 = 0
Rotational Auto-Tuning
T1-01 = 1
Stationary Auto-Tuning 1
Stationary Auto-Tuning for
T1-01 = 2
Line-to-Line Resistance
Stationary Auto-Tuning 2 T1-01 = 4
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
Auto-Tuning process and selections.
Input Value
Control Mode
Motor Rated Power
Motor Rated Voltage
Motor Rated Current
Motor Rated Frequency
112
104.
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 cannot 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 cannot be removed and if slip and no-load current data are available.
Flowchart B: Auto-Tuning for Induction Motors on page 109
Table 4.6 Auto-Tuning Input Data
Input
Unit
Parameter
A1-02 –
T1-02 kW
T1-03 Vac
T1-04 A
T1-05 Hz
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Tuning Type (T1-01)
0 1
Standard Stationary 1
2, 3 2, 3
YES YES
YES YES
YES YES
YES YES
Control Mode (A1-02)
V/f (0) OLV (2) CLV (3)
No Yes Yes
No Yes Yes
Yes Yes Yes
No Yes Yes
for details on
2
4
Line-to-Line
Stationary 2
Resistance
0, 1, 2, 3 2, 3
YES YES
N/A YES
YES YES
N/A YES