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YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
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
[Drive Model (KVA) Selection] on page 557
.
–
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 557
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) or longer, do Stationary Auto-Tuning for Line-to-Line
Resistance.
WARNING!
Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the motor is stopped. Do not
touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it can cause serious injury or death.
■
Precautions before Inertia Tuning and ASR Tuning
Before Inertia Tuning or ASR Tuning, check these items:
WARNING!
Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the motor is stopped. Do not
touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it can cause serious injury or death.
•
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.
Содержание CR700
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Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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