Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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14. (C) Motor Constant Parameters
14.3 Offline auto tuning for a PM motor (motor constant tuning)
*1 The setting range for the 575 V class is "0, 3, 5, 6, 10, 13, 15, 16, 30, 33, 8090, 8093, 9090, and 9093".
*2 The initial value for the FR-E820-0050(0.75K) or lower, the FR-E840-0026(0.75K) or lower, the FR-E860-0017(0.75K), and the FR-E820S-
0050(0.75K) or lower is set to the 85% of the inverter rated current.
*3 The initial value differs according to the voltage class (200/400/575 V).
*4 The setting range and unit change according to the Pr.71 (Pr.450) setting.
• The settings are valid under PM sensorless vector control.
• The offline auto tuning enables the operation with IPM motors and SPM motors. (When a PM motor is used, always perform
offline auto tuning.)
• Tuning is enabled even when a load is connected to the motor.
• Reading/writing of the motor constants tuned by offline auto tuning are enabled.
• The offline auto tuning status can be monitored on the operation panel.
 Before performing offline auto tuning
Check the following points before performing offline auto tuning:
• Check that PM sensorless vector control is selected. (Refer to page 97 .)
• Check that a motor is connected. (Check that the motor is not rotated by an external force during tuning.)
• The rated motor current should be equal to or less than the inverter rated current. (Note that the motor rated current should
be 0.4 kW or higher (0.1 kW or higher for the 200 V class).)
If a motor with substantially low rated current compared with the inverter rated current, however, is used, speed and torque
accuracies may deteriorate due to torque ripples, etc. Set the rated motor current to about 40% or higher of the inverter
rated current.
• The maximum frequency under PM sensorless vector control is 400 Hz.
• Tuning is enabled even when a load is connected to the motor. The motor may run slightly. Fix the motor securely with a
mechanical brake, or before tuning, make sure that it is safe even if the motor rotates. (Caution is required especially in
vertical lift applications.) Note that even if the motor runs slightly, tuning performance is unaffected.
• Tuning may be disabled depending on the motor characteristics.

Settings
• To perform tuning, set the following parameters about the motor.
739
C231 Second motor Ld decay
ratio
9999 0% to 100%, 9999
Tuning data of the second motor.
(The value measured by offline auto tuning is automatically
set.)
9999: Inverter internal data is used.
740
C232 Second motor Lq decay
ratio
9999 0% to 100%, 9999
741
C282
Second motor starting
resistance tuning
compensation coefficient 1
9999 0% to 200%, 9999
742
C285 Second motor magnetic
pole detection pulse width
9999 0 to 6000 μ s, 9999
746
C233 Second motor protection
current level
9999
100% to 500% Set the maximum current (OCT) level of the second motor.
9999 200%
Pr. Name
Initial
value
Setting range Description
First motor Pr. Second motor Pr. Name Setting
80 453 Motor capacity Motor capacity (kW)
81 454 Number of motor poles Number of motor poles (2 to 12)
9 51 Electronic thermal O/L relay Rated motor current (A)
84 457 Rated motor frequency Rated motor frequency (Hz)
83 456 Rated motor voltage Rated motor voltage (V)
71 450 Applied motor
8090, 8093 (IPM motor),
9090, 9093 (SPM motor)
*1
96 463 Auto tuning setting/status 1