Auto-Tuning; Auto-Tuning; Types Of Auto-Tuning - YASKAWA L1000V 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.
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.
u Types of Auto-Tuning
The drive offers two different types of Auto-Tuning for induction motors. The type of Auto-Tuning used differs 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
Note: The drive will only show Auto-Tuning parameters that are valid for the control mode that has been set in A1-02.
NOTICE: Equipment Hazard. Rotational 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 rotational Auto-Tuning.
This feature automatically sets the V/f pattern and motor parameters E1-
Type
Rotational Auto-Tuning
Stationary Auto-Tuning for
Line-to-Line Resistance
Table 4.5 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
Motor Rated Power
Motor Rated Voltage
Motor Rated Current
Motor Rated Frequency
Number of Motor Poles
Motor Rated Speed
The number of motor poles (T1-06) is usually not found on the motor nameplate, but it can be calculated by:
Where f is the motor rated frequency and n
80
Table 4.4 Types of Auto-Tuning for Induction Motors
Setting
• Rotational Auto-Tuning gives the most accurate results, and is recommended if possible.
T1-01 = 0
• Motor must run freely or with light load (<30%), i.e. ropes have to be removed.
• Used when the motor cable exceeds 50 m.
T1-01 = 2 • Used in V/f control if drive and motor capacities differ.
• Perform when the ropes cannot be removed from the installation for rotational auto-tuning.
76 and 79
Table 4.5 Auto-Tuning Input Data
Input Value
is the motor synchronous speed.
s
YASKAWA EUROPE SIEP
Start-Up Flowcharts on page
Requirements and Benefits
for details on Auto-Tuning process and selections.
Input Parameter Unit
T1-02 kW
T1-03 Vac
T1-04 A
T1-05 Hz
T1-06 -
T1-07 r/min
p = (120 x f) / n
s
and E2- for an induction motor.
Control Mode (A1-02)
V/f (0)
Tuning Type (T1-01)
2
0
Stationary for Line-to-
Rotational
Line Resistance
Yes Yes
Yes No
Yes Yes
Yes No
Yes No
Yes No
YASKAWA AC Drive L1000V Technical Manual
76.
OLV (2)
No Yes
Yes Yes