Offline Auto Tuning (Pr. 80 To Pr. 84, Pr. 90 To Pr. 94, Pr. 96, Pr. 684, Pr. 859) - Mitsubishi Electric FR-B-750 to 75K Instruction Manual

Before operating the FR-B3 series
4.4.2 Offline auto tuning ( Pr. 80 to Pr. 84 , Pr. 90 to Pr. 94 , Pr. 96 , Pr. 684, Pr. 859 )
Setting can be made only for FR-B3 series.
• What is offline auto tuning?
When performing FR-B3 series, the motor can be run with the optimum operating characteristics by
automaticaly measuring the motor constants (offline auto tuning) even when each motor constants differs,
other manufacturer's motor is used, or the wiring length is long.
Parameter
Name
Number
80 Motor capacity
81 Number of motor poles
82 Motor excitation current
83 Motor rated voltage
84 Rated motor frequency
90 Motor constant (R1)
91 Motor constant (R2)
92 Motor constant (L1)
93 Motor constant (L2)
94 Motor constant (X)
Auto tuning setting/
96
status
Tuning data unit
684
switchover
859 Torque current
POINT
Tuning is enabled even when a load is connected to the motor. (As the load is lighter, tuning accuracy is higher.
·
Tuning accuracy does not change even if the inertia is large.)
· For the offline auto tuning, you can select either the motor non-rotation mode (Pr.96 = "1") or rotation mode (Pr.96 =
"101"). Perform tuning in motor rotation mode in this case.
Reading/writing/copy of motor constants tuned by offline auto tuning are enabled.
·
The offline auto tuning status can be monitored with the PU (FR-DU07/FR-PU04/FR-PU07).
·
70
Initial
Setting Range
Value
Inverter
Inverter capacity
capacity
4 4
Reading only.
9999
(Not settable.)
200/400V* 0 to 1000V
60Hz 10 to 120Hz
9999
9999
Reading only.
9999
(Not settable)
9999
9999
0
1
0
101
0
0
1
Reading only.
9999
(Not settable)
Description
Setting cannot be changed.
The number of motor poles is always four.
Tuning data
(The value measured by offline auto tuning is
automatically set.)
Use the Mitsubishi explosion-proof motor
constants
Set the rated motor voltage(V).
* The initial value differs according to the
voltage level. (200V/400V)
Set the rated motor frequency (Hz).
Tuning data
(The value measured by offline auto tuning is
automatically set.)
9999: Use the Mitsubishi explosion-proof
motor constants
Offline auto tuning is not performed
Offline auto tuning is performed without motor
running
Offline auto tuning is performed with motor
running
Internal data converter value
Displayed in "A, Ω, mH, %"
Tuning data
(The value measured by offline auto tuning is
automatically set.)
Use the Mitsubishi explosion-proof motor
constants
B3 B3 B3