Mitsubishi Electric FR-A700 Technical Manual page 237

(1) Wiring and load check
Check the following before performing auto tuning.
1) Connect the motor and select any of General-
purpose magnetic flux vector control, Advanced
magnetic flux control, Real sensorless vector
control, or vector control. Note that the motor
should be at a stop at a tuning start. Auto tuning
can not be performed when V/F control is
selected.
(Except when [Pr. 96 = 21] in
2) The motor capacity should be equal to or one rank
lower than the inverter capacity. (Note that the
motor capacity should be 04.kW or more for
and 0.1kW or more for
A700
3) Tuning is enabled even when a load (friction,
steady load, etc.) is connected to the motor. Note
that tuning accuracy is higher as the load is
lighter. Tuning accuracy does not change even if
the inertia is large.
4) Note the following matters when [Pr. 96 = 101]
(offline auto tuning performed with motor running).
(a) Torque is not enough during tuning.
(b) The motor may be run at nearly its rated
frequency ([Pr. 84] setting), make sure that
there will be no problem in safety
(c)
The mechanical brake is open.
(d)
No external force is applied to rotate the
motor.
5) Even if [Pr. 96 = 1, 11, 21] (tuning performed
without motor running), the motor may run slightly.
Therefore, fix the
mechanical brake, or before tuning, and make
sure that there will be no problem in safety if the
motor runs.
*Fix the motor securely especially for elevators.
Note that tuning performance is unaffected even if
the motor runs slightly.
6) Offline auto tuning will not be performed properly
if it is performed with a reactor connected or surge
voltage suppression filter (FR-ASF-H) to the 55K
or less, or sine wave filter (MT-BSL/BSC)
connected to the 75K or more between the
inverter and motor. Remove it before tuning start.
)
E700 D700
.)
E700 D700
motor securely with a
271
(2) Parameter Setting
After General-purpose magnetic flux vector control,
Advanced magnetic
sensorless vector control, vector control is selected,
refer to the parameter description to set the following
parameters. Refer to page 367 for the auto tuning at
[Pr. 96 = 21] V/F control (automatic restart after
instantaneous power failure (with frequency search)).
1) [Pr. 96 Auto tuning setting/status]
......... Set 1 or 101 when performing Advanced magnetic
vector control. Set 11 when performing General-
purpose magnetic vector control.
When the setting is 1 (Advanced magnetic flux
vector control)
......... It is performed without motor running. It takes
about 25 to 120s
Excitation noise is produced during tuning.
*Tuning time differs according to the inverter
capacity and motor type.
When the setting is 11 (General-purpose magnetic
vector control)
......... It tunes only the motor constant (R1) without
running motor. It takes about 9s until tuning is
completed.
When the setting is 101
......... It is performed with motor running.
It takes about 40s until tuning is completed. The
motor rotates at 60Hz.
2) [Pr. 9 Electronic thermal O/L relay]
......... Set the rated motor current (A).
3) [Pr. 83 Rated motor voltage]
......... Set the rated motor voltage (V).
4) [Pr. 84 Rated motor frequency]
......... Set the rated motor frequency (Hz).
5) [Pr. 71 Applied motor]
......... Select the setting referring to the table below.
Motor
SF-JR, SF-TH
Mitsubishi standard
SF-JR 4P 1.5kW or less
motor
Mitsubishi high
SF-HR
efficiency motor
Others
SF-JRCA 4P, SF-TH
(constant torque)
Mitsubishi constant-
torque motor SF-HRCA
Others (SF-JRC, etc.)
SF-V5RU (1500r/min series)
SF-THY
Vector control
dedicated motor
SF-V5RU (except for 1500r/
min series)
Other manufacturer's
standard motor
Other manufacturer's
constant-torque motor
* For the setting value, set the motor rating plate value.
If there are several rating values as standard motor,
set the value of 200V/60Hz or 400V/60Hz.
When using vector control dedicated motors, SF-
V5RU and SF-THY, setting 33 or 34 to [Pr. 71]
chooses the internal constant that meets the
dedicated motor. Therefore, setting to [Pr. 83 and 84]
is unnecessary.
PARAMETER
flux vector control, Real
*
until tuning is completed.
*
*
[Pr. 71]
Setting
3
23
43
3
13
53
13
33
13
— 3
— 13
2