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

• When the protective function (E.EP) is activated during tuning, check the wiring of the motor and the encoder, Pr.359
(Pr.852) setting, and then perform tuning again.
• When tuning ends properly, the counter value of the offset between the motor home magnetic pole position and the
encoder home position is written in Pr.1105 (Pr.887).
Parameters referred to
Pr.9 Electronic thermal O/L
Pr.71 Applied motorpage 528
Pr.178 to Pr.189 (Input terminal function
Pr.800 Control method
5.13.4 Offline auto tuning for a PM motor (motor constant
PM PM PM
The offline auto tuning enables the optimal operation of a PM motor.
• Automatic measurement of motor constants (offline auto tuning) enables optimal operation of motors for PM sensorless
vector control even when motor constants vary or when the wiring distance is long. IPM and SPM motors other than the
MM-CF IPM motor can also be used.
For the offline auto tuning under Advanced magnetic flux vector control, Real sensorless vector control, and Vector control,
refer to page 532.
Pr.
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
Downloaded from ManualsNet.com
relaypage 415
selection)page 521
selectionpage 221
tuning)
Initial
Name
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, 101
1
0
11
search engine
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).
The MM-CF constant is used when the IPM motor MM-CF is
selected, and the inverter internal data is used when a PM
motor other than MM-CF is selected. Use the correct setting
according to the motor specification.
Set the permissible speed (frequency) of the motor.
The MM-CF motor maximum frequency is used when the IPM
motor MM-CF is selected, and Pr.84 setting is used when a PM
motor other than MM-CF is selected.
Set the motor inertia.
9999: The MM-CF inertia is used for the IPM motor MM-CF.
No offline auto tuning
Offline auto tuning is performed without rotating the motor
(motor other than IPM motor MM-CF).
Offline auto tuning is performed without rotating the motor (for
IPM motor MM-CF).
Description
5. PARAMETERS
5.13 (C) Motor constant parameters
1
2
3
4
5
6
7
8
9
10
551