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3 Startup Procedure and Test Run
If the settings in E2-02 and E2-03 are different from the measurement taken in step 1, then the values were set
automatically by the drive.
Note:
• When the conditions in step 2 cannot be met for the first test run, then the following problems may occur if the values set in E2-02 and
E2-03 are significantly different from data in the official test report for the motor and the data listed in Parameters Changed by o2-04
[Drive Model (KVA) Selection] on page 513.
–Motor vibrations, hunting
–Insufficient torque
–Overcurrent
Particularly when used in an elevator, there is the risk of the cage dropping and personal injury. Take one of the following measures to
decrease risk.
–After performing Stationary Auto-Tuning, operate the drive in accordance with the previously described conditions and procedure.
–Set T1-12 = 0 [Test Mode Selection = No].
–Perform Rotational Auto-Tuning.
• If the drive is initialized after completing step 1, then go back and repeat Stationary Auto-Tuning.
• When using a general-purpose motor, the target value for E2-02 should be 1 Hz to 3 Hz, and the target rated current for E2-03 should
be 30% to 65%. Generally, larger capacity motor have a lower rated slip, and a smaller ratio for the no-load current rated current. Refer
to Parameters Changed by o2-04 [Drive Model (KVA) Selection] on page 513 for details.
Precautions before Stationary Auto-Tuning for Line-to-Line Resistance and Stator Resistance Auto-Tuning
In V/f control, when the motor cable is 50 meters (164 feet), do Stationary Auto-Tuning for Line-to-Line
Resistance.
WARNING
Electrical Shock Hazard. In Stationary Auto-Tuning, the drive applies voltage to the motor. Do not touch the
motor until Auto-Tuning is complete. Failure to obey could cause serious injury.
Precautions before Inertia Tuning and ASR Tuning
Before Inertia Tuning or ASR Tuning, check these items:
WARNING
Electrical Shock Hazard. In Rotational Auto-Tuning, the drive applies voltage to the motor before the motor
rotates. Do not touch the motor until Auto-Tuning is complete. Failure to obey could cause serious injury.
• Do rotational motor parameter tuning or look at the motor test report or nameplate to enter the values manually.
• Make sure that the motor magnetic brake is released.
• Connect the motor and load.
• Make sure that external force from the machine will not cause the motor to rotate.
• Make sure that the machine does not prevent reverse rotation. You cannot do Inertia Tuning or ASR Tuning with
machines that prevent reverse rotation.
• When the motor can rotate during Auto-Tuning, check for safety issues near the drive, motor, and machine.
Note:
If there are gears between the machine and motor shaft, Inertia Tuning or ASR Tuning are possibly not applicable.
Deceleration Rate Tuning Precautions
Check the following before performing Deceleration Rate Tuning.
Note:
• Do not use Deceleration Rate Tuning if also using a braking resistor unit or a regenerative converter.
• Perform Deceleration Rate Tuning with the load attached to the motor.
• Do not use the Deceleration Rate Tuning with the following applications. When performing Deceleration Rate Tuning, the drive will
automatically rotate the motor forward and repeatedly accelerate and decelerate the motor.
–Applications that cannot handle sudden acceleration and sudden deceleration
• Do not perform Deceleration Rate Tuning if the drive is set to H1-xx = 16 [MFDI Function Selection = Motor 2 Selection]. Failure to
obey can cause an ov [Overvoltage] fault.
◆
No-load Test Runs
After you set the basic parameters and completed Auto-Tuning for the motor, the next step is to do a test run.
WARNING
Crash Hazard. Test the system to make sure that the drive operates safely after you wire the drive and set
parameters. Failure to obey can cause injury or damage to equipment.
■
No-load Test Runs
Before connecting the motor with machinery, run a no-load test to confirm operational status.
Precautions before Operation
Before rotating the motor, check the following items.
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YASKAWA ELECTRIC SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
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