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PARAMETERS
93
Pr. 7 "acceleration time"
Pr. 9 "electronic thermal O/L
relay"
Pr. 71 "applied motor"
Pr. 79
"operation mode selection"
Pr. 80 "motor capacity"
Related parameters
"
" Offline auto tuning function (Pr. 82 to Pr. 84, Pr. 90, Pr. 96)
4.2.28 Offline auto tuning function (Pr. 82 to Pr. 84, Pr. 90, Pr. 96)
Pr. 82 "motor exciting current"
Pr. 83 "rated motor voltage"
Pr. 84 "rated motor frequency"
Pr. 90 "motor constant (R1)"
Pr. 96 "auto-tuning setting/status"
What is auto tuning?
(
1
)
The
g
eneral-
p
ur
p
ose ma
g
netic flux vector control s
y
stem
g
ets the best
performance from the motor for operation.
(
2
)
Usin
g
the offline auto tunin
g
function to im
p
rove the o
p
erational
p
erformance of
the motor.
When you use the general-purpose magnetic flux vector control, you can perform the
offline auto tuning operation to calculate the motor constants automatically.
"
Offline auto tuning is made valid only when Pr. 80 is set to other than "9999" to
select the general-purpose magnetic flux vector control.
"
The Mitsubishi standard motor (SF-JR0.4kW or more) or Mitsubishi constant-torque
motor (By SF-JRCA 200V class and 4-pole motor of 0.4kW to 7.5kW) allows
general-purpose magnetic flux vector control operation to be performed without
using the offline auto tuning function. However, if any other motor (Motor made of
the other manufacturers or SF-JRC, etc.) is used or the wiring distance is long, using
the offline auto tuning function allows the motor to be operated with the optimum
operational characteristics.
"
Offline auto tuning
Automatically measures the motor constants used for general-purpose magnetic flux
vector control.
!
Offline auto tuning can be performed with the load connected. (As the load is
smaller, tuning accuracy is higher. Tuning accuracy does not change if inertia is
large.)
!
The offline auto tuning status can be monitored with the PU (FR-PU04).
!
Offline auto tuning is available only when the motor is at a stop.
"
Tuning data (motor constants) can be copied to another inverter with the PU
(FR-PU04).
!
You can read, write and copy the motor constants tuned by the offline auto tuning.
Parameter
Number
Factory
Setting
Setting Range Remarks
82 9999
0 to 500A,
9999
9999: Mitsubishi standard motor
83 200V 0 to 1000V Rated inverter voltage
84 60Hz 50 to 120Hz
90 9999 0 to 50
Ω
, 9999 9999: Mitsubishi standard motor
96 0 0, 1 0: No tuning