Auto-Tuning; Auto-Tuning; Types Of Auto-Tuning; Before Auto-Tuning The Drive - YASKAWA V1000 Technical Manual

4.7 Auto-Tuning

4.7

Auto-Tuning

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Types of Auto-Tuning

There are three types of Auto-Tuning. Select the best type of Auto-Tuning for the application.
Procedure on page 101.
Type
Rotational
Auto-Tuning
for V/f Control
Rotational Auto-
Tuning
for OLV Control
Stationary Auto-
Tuning
for Line-to-Line
Resistance (V/f and
OLV Control)
Note: Auto-Tuning cannot be performed on permanent magnet motors (IPM, SPM, etc.).
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Before Auto-Tuning the Drive

Check the items below before Auto-Tuning the drive.
n Basic Auto-Tuning Preparations
• Auto-Tuning automatically determines the electrical characteristics of the motor. This is fundamentally different from
other types of Auto-Tuning features used in servo systems.
• Auto-Tuning requires the user to input data from the motor nameplate. Make sure the information written on the
nameplate is available before Auto-Tuning the drive.
• For best performance, be sure the drive input supply voltage equals or exceeds the motor rated voltage.
Note: Performance can be enhanced by using a motor with a base voltage that is 20 V (40 V for 400 V class models) lower than the input
supply voltage. This may be of special importance when operating the motor above 90% of base speed, where high torque precision is
required.
• Auto-Tuning is not possible with permanent magnet motors.
• To cancel Auto-Tuning, press the STOP key on the LED operator.
• Table 4.21 describes digital input and output terminal status during Auto-Tuning.
Auto-Tuning Type
Rotational Auto-Tuning for V/f Control
Rotational Auto-Tuning for OLV Control
Stationary Auto-Tuning for Line-to-Line Resistance
WARNING! Sudden Movement Hazard. Do not release the mechanical brake during stationary Auto-Tuning. Inadvertent brake release
may cause damage to equipment or injury to personnel. Ensure that the mechanical brake release circuit is not controlled by the drive
multi-function digital outputs.
Note: It is recommended that Rotational Auto-Tuning is performed with the load disconnected. Failure to comply could result in improper
drive operation. If Rotational Auto-Tuning is performed for a motor coupled to a load, the motor constants will be inaccurate and the
motor may exhibit abnormal operation. Disconnect or decouple the motor from the load.
n Notes on Rotational Auto-Tuning
• For optimal performance, Auto-Tuning should only be done with the motor uncoupled from the load for applications
requiring high performance over a wide speed range.
• If motor and load can not be uncoupled, the load should be lower than 30% of the rated load. Performing Rotational
Auto-Tuning with a higher load will set motor parameters incorrectly, and can cause irregular motor rotation.
• Ensure the motor-mounted brake is fully released if installed.
• Connected machinery should be allowed to rotate the motor.
100
Setting Application Conditions and Benefits
• Assumes the motor can rotate during the Auto-Tuning process
• Improves torque compensation, slip compensation, energy
T1-01 = 3 savings, and Speed Search performance
• Should be performed when Speed Estimation Type Speed
Search or Energy Saving is used in V/f Control
• Assumes the motor can rotate during the Auto-Tuning process
T1-01 = 0
• Achieves high-performance motor control and should be
performed whenever Open Loop Vector Control is used
For use when:
• The motor cable exceeds 50 m
T1-01 = 2
• The motor cable length has been modified after Auto-Tuning
has been previously performed
• When motor capacity and drive capacity differ
Table 4.21 Digital Input and Output Operation During Auto-Tuning
Digital Input
Not available Functions the same as during normal operation
Not available Functions the same as during normal operation
Not available Maintains the status at the start of Auto-Tuning
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Refer to Auto-Tuning
Control Mode
V/f Control
Open Loop Vector Control
V/f Control, Open Loop Vector
Control
Digital Output