Autotuning - Omron SYSDRIVE RV Series User Manual

Open-loop Vector Control (A1-02 = 2)
Perform autotuning. If the motor can be operated without a load, perform rotational autotuning. If the motor
cannot be operated, perform stationary autotuning. Refer to the following section on Autotuning for details on

autotuning.

Flux Vector Control (A1-02 = 3)
Perform autotuning. If the motor can be operated, perform rotational autotuning. If the motor cannot be oper-
ated, perform stationary autotuning 1 or 2. Refer to the following section on Autotuning for details on autotun-
ing.
Autotuning
Use the following procedure to perform autotuning if using the vector control method or the cable length is
long, etc. Motor parameters will be set automatically.
If the control method was changed after autotuning, be sure to perform autotuning again.
One of the following four autotuning modes can be set.
Rotational autotuning
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Stationary autotuning 1
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Stationary autotuning for line-to-line resistance only
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Stationary autotuning 2
•
Precautions Before Using Autotuning
Read the following precautions before using autotuning.
Autotuning the Inverter is fundamentally different from autotuning the servo system. Inverter autotuning
•
automatically adjusts parameters according to detected motor parameters, whereas servo system autotun-
ing adjusts parameters according to the detected size of the load.
When speed or torque precision is required at high speeds (i.e., 90% of the rated speed or higher), use a
•
motor with a rated voltage that is 20 V less than the input power supply voltage of the Inverter for 200V-
class Inverters and 40 V less for 400V-class Inverters. If the rated voltage of the motor is the same as the
input power supply voltage, the voltage output from the Inverter will be unstable at high speeds and suffi-
cient performance will not be possible.
Use stationary autotuning 1 or 2 whenever performing autotuning for a motor that is connected to a load.
•
Use rotational autotuning whenever performing autotuning for a motor that has fixed output characteris-
•
tics, when high precision is required, or for a motor that is not connected to a load.
If rotational autotuning is performed for a motor connected to a load, the motor parameters will not be
•
found accurately and the motor may exhibit abnormal operation. Never perform rotational autotuning for a
motor connected to a load.
If the wiring between the Inverter and motor changes by 50 m or more between autotuning and motor
•
installation, perform stationary autotuning for line-to-line resistance only.
If the motor cable is long (50 m or longer), perform stationary autotuning for line-to-line resistance only
•
even when using V/f control.
The status of the multi-function inputs and multi-function outputs will be as shown in the following table
•
during autotuning. When performing autotuning with the motor connected to a load, be sure that the hold-
ing brake is not applied during autotuning, especially for conveyor systems or similar equipment.
Trial Operation Procedures
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