Offline Auto Tuning For A Pm Motor (Under Vector Control) - Mitsubishi Electric FR-A800 Series Instruction Manual

NOTE
• The RT signal is assigned to terminal RT in the initial status. Set "3" in one of Pr.178 to Pr.189 (Input terminal function
selection) to assign the RT signal to another terminal.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.1 Maximum frequencypage 428
Pr.9 Electronic thermal O/L
Pr.31 to Pr.36 Frequency
Pr.71 Applied motorpage 528
Pr.156 Stall prevention operation
Pr.178 to Pr.189 (Input terminal function
Pr.190 to Pr.196 (Output terminal function
Pr.800 Control method
5.13.3 Offline auto tuning for a PM motor (under Vector
control)
Vector Vector Vector
The offline auto tuning enables the optimal operation of a PM motor (under Vector control).
• Automatic measurement of motor constants (offline auto tuning) enables optimal operation of motors for Vector control
even when motor constants vary or when the wiring distance is long.
For the offline auto tuning under Vector control (for induction motor), refer to
Pr. Name
684 Tuning data unit
C000 switchover
71
Applied motor
C100
80
Motor capacity
C101
81
Number of motor poles 9999
C102
9 Electronic thermal O/L
C103 relay
83
Rated motor voltage
C104
84
Rated motor frequency 9999
C105
702 Maximum motor
C106 frequency
707
Motor inertia (integer)
C107
724 Motor inertia
C108 (exponent)
96 Auto tuning setting/
C110 status
542
5. PARAMETERS
5.13 (C) Motor constant parameters
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relaypage 415
jumppage 429
selectionpage 431
selection)page 521
selection)page 473
selectionpage 221
Initial
value
0
0
1
0 to 6, 13 to 16, 20, 23, 24,
30, 33, 34, 40, 43, 44, 50,
0 53, 54, 70, 73, 74, 330,
333, 334, 8090, 8093,
8094, 9090, 9093, 9094
0.4 to 55 kW
9999
0 to 3600 kW
9999
2, 4, 6, 8, 10, 12
9999
Inverter
0 to 500 A
rated
0 to 3600 A
*1
current
200/400
0 to 1000 V
*4
V
10 to 400 Hz
9999
0 to 400 Hz
9999
9999
9999 10 to 999, 9999
9999 0 to 7, 9999
0
1
0
11
101
search engine
page
Setting range
Internal data converted value
The value is indicated in A, Ω, mH, or mV.
By selecting a motor, the thermal characteristic and motor
constant of each motor are set.
*2
Set the applied motor capacity.
*3
V/F control
Set the number of motor poles.
V/F control
*2
Set the rated motor current.
*3
Set the rated motor voltage (V).
Set the rated motor frequency (Hz).
As the internal data of the inverter is used, set it correctly
according to the motor specifications.
Set the permissible speed (frequency) of the motor.
The Pr.84 setting is used.
Set the motor inertia.
9999: Inverter internal data
No offline auto tuning
Offline auto tuning is performed without the motor rotating.
Offline auto tuning is performed only for motor constant R1
(without motor rotation).
Encoder position tuning and offline auto tuning are performed
(with the motor rotating slightly).
532.
Description