Auto-Tuning Fault Codes; Performing Auto-Tuning - YASKAWA V1000 Series Technical Manual

Basic Auto-Tuning Preparations
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• 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.
• Before auto-tuning, be sure the input supply voltage equals or exceeds the motor rated voltage. 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.
• The next table describes digital input and output terminal status during Auto-Tuning.
Auto-Tuning Type
Auto-Tuning for Energy Savings in V/f Control
Rotational-Type Auto-Tuning
Auto-Tuning for Resistance between Lines
WARNING! When Auto-Tuning a motor that is used on an application in conjunction with a brake, take special precaution to insure the brake stays applied. Auto-Tuning activates
the drive multi-function outputs per the table below. Therefore, a brake may be released while the motor is uncoupled from the load, resulting in an unsafe condition. Proper
precautions must therefore be taken prior to performing Auto-Tuning.
Note: It is recommended that Rotational Auto-Tuning be 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.
Rotational Auto-Tuning for V/f Control
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• Motor rotates during Auto-Tuning.
• Sets parameters required for torque compensation, slip compensation, energy savings, and speed search.
• Available only when the drive is set for V/f Control.
• Required to perform Estimation-Type Speed Search when using V/f Control.
Rotational Auto-Tuning for Open Loop Vector Control
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• Used only when in Open Loop Vector Control.
• Perform only with the motor uncoupled from the load for applications requiring high performance over a wide speed range.
• Disconnect the load before Auto-Tuning the drive and motor. Performing Rotational Auto-Tuning with the load connected will set motor parameters
incorrectly, and also be dangerous because irregular motor rotation will occur.
• It is possible to perform Rotational Auto-Tuning with a connected load if the load is less than 30% of the rated load.
• Ensure a motor-mounted brake is fully released.
• Connected machinery should not produce enough power to rotate the motor.
Stationary Auto-Tuning for Terminal Resistance Only
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• 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.
Note: When auto-tuning a motor that is used on an application in conjunction with a brake, take special precaution to ensure the brake stays applied.
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Auto-Tuning Fault Codes

Calculation of abnormal measurements or pressing

Performing Auto-Tuning

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The following example illustrates how to perform Rotational Auto-Tuning.
Note: The following example is shown with the drive in Open Loop Vector Control (A1-02 = 2).
Selecting the Type of Auto-Tuning
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1. Turn on the power to the drive. The initial display appears.
2.
Press the key until the Auto-Tuning screen appears.
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
STOP
before completion will interrupt Auto-Tuning.
A
A – Normal Auto-Tuning Display
Figure 5.76 Auto-Tuning Interruption Display
Step
Digital Input
Not available Works the same during normal operation
Not available Works the same during normal operation
Not available Maintains the status at the start of Auto-Tuning
B
B – Auto-Tuning Interrupted
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⇒
5.11 Auto-Tuning
Digital Output
Display/Result
5
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