Mitsubishi Electric 800 Series Instruction Manual (Function page 388

*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, FR-E840-0026(0.75K) or lower, FR-E860-0017(0.75K), and 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.
*5 To perform offline auto tuning for the 400 V class 0.1 kW Mitsubishi Electric geared motor (GM-[]), set "1803" in Pr.71 (Pr.450).
• The setting is valid under Advanced magnetic flux vector control, Real sensorless vector control, or Vector control.
• By using the offline auto tuning function, the optimum operation characteristics are obtained for a motor other than Mitsubishi
Electric standard efficiency motors (SF-JR 0.2 kW or higher), high-efficiency motors (SF-HR 0.2 kW or higher), Mitsubishi
Electric constant-torque motors (SF-JRCA 4P, SF-HRCA 0.2 kW to 7.5 kW), Mitsubishi Electric high-performance energy-
saving motor (SF-PR), Mitsubishi Electric high-performance energy-saving motor with encoder (SF-PR-SC), Mitsubishi
Electric Vector control dedicated motor (SF-V5RU (1500 r/min series)), Mitsubishi Electric geared motor (GM-[]), or Mitsubishi
Electric inverter-driven geared motor for encoder feedback control (GM-DZ, GM-DP), such as an induction motor of other
manufacturers or SF-JRC, or with a long wiring length (30 m or longer).
• 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 a value other than "9999" is set in Pr.80 and Pr.81, and Advanced magnetic flux vector control, Real sensorless
vector control, or Vector control is selected (with Pr.800). (Refer to
• Check that a motor is connected. (Check that the motor is not rotated by an external force during tuning.)
• Select a motor with the rated current 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 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.
• Tuning is not available for a high-slip motor, high-speed motor, or special motor.
• The maximum frequency 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.
• Offline auto tuning is not performed correctly when the surge voltage suppression filter (FR-ASF-H/FR-BMF-H) is inserted
between the inverter and motor. Be sure to remove it before performing tuning.
• Make sure to connect the encoder to the motor without coaxial misalignment for Vector control. Speed ratio must be 1:1.
 Settings
• To perform tuning, set the following parameters about the motor.
First Second
motor motor Name
Pr. Pr.
80 453 Motor capacity
81 454 Number of motor poles 9999 (V/F control)
Control method
800 451
selection
Electronic thermal O/L
9 51
relay
83 456 Rated motor voltage
Rated motor
84 457
frequency
71 450 Applied motor
Auto tuning setting/
96 463
status
*1 The initial value differs according to the voltage class (200/400/575 V).
Initial value
9999 (V/F control) Set the motor capacity (kW).
Set the number of motor poles (2 to 12).
40 (in Pr.800) / 9999 Set this parameter under Advanced magnetic flux vector control, Real
(in Pr.451) sensorless vector control, or Vector control.
Inverter rated current Set the rated motor current (A).
*1
200/400/575 V Set the rated motor voltage (V) printed on the motor's rating plate.
Set the rated motor frequency (Hz).
9999
Pr.3 Base frequency setting is used.
Set this parameter according to the motor.
0 (standard motor)
constant setting ranges, units and tuning data can be stored according
to settings.
Set "1".
0 1: Tuning is performed without the motor rotating. (Excitation noise
occurs at this point.)
page 104.)
Description
*2
When the setting is "9999", the
*3
15. (C) Motor Constant Parameters
11
12
13
14
15
16
17
18
19
20
*2
Three types of motor
387
15.2 Offline auto tuning