Auto-Tuning; Auto-Tuning; Types Of Auto-Tuning; Before Auto-Tuning The Drive - Omron V1000 User Manual

4.7

Auto-Tuning

u

Types of Auto-Tuning

There are three types of Auto-Tuning. Select the best type of Auto-Tuning for the application.
Procedure on page 88.
Type Setting
Rotational

Auto-Tuning

T1-01 = 3
for V/f Control
Rotational Auto-
Tuning T1-01 = 0
for OLV Control
Stationary Auto-
Tuning
for Line-to-Line T1-01 = 2
Resistance (V/f and
OLV Control)
Note: Auto-Tuning cannot be performed on permanent magnet motors (IPM, SPM, etc.).
u

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 4.19 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.
n Notes on Stationary Auto-Tuning for Terminal Resistance Only
• If the motor cable lead length has been significantly modified after Auto-Tuning has already been performed, perform
Stationary Auto-Tuning with the new cables.
• Perform when using motor cables longer than 50 m with V/f Control.
WARNING! Electrical Shock Hazard. When executing stationary Auto-Tuning for line-to-line resistance only, the motor does not rotate,
however, power is applied. Do not touch the motor until Auto-Tuning is completed. Failure to comply may result in injury from electrical
shock.
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
Application Conditions and Benefits
• Assumes the motor can rotate during the Auto-Tuning process
• Improves torque compensation, slip compensation, energy
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
• 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
• The motor cable length has been modified after Auto-Tuning has
been previously performed
• When motor capacity and drive capacity differ
Table 4.19 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
4.7 Auto-Tuning
Refer to Auto-Tuning
Control Mode
V/f Control
Open Loop Vector Control
V/f Control, Open Loop Vector
Control
Digital Output
4
87