3. Test Operation and Adjustment
3-12
1) Preparation
Separate the motor and load, machine, etc., and confirm the safety on the load side.
2) Selection of control method
• Set A05-2 to 1. (enables parameter display)
• By parameter (C30-0), select V/f control according the load conditions
IM speed sensor-less vector control (C30-0 = 3), ( Default value)
IM vector control with speed sensor (C30-0 = 4)
* The default value is V/f control (constant torque) (C30-0 = 1).
3) Initialisation of motor constants
Input the motor rating nameplate value parameters. Automatic tuning will automatically change the
parameters, so it is recommended to write down the values set in table 3-6-4 or table 3-6-5.
Table 3-6-6
Parameter No.
Name
B01-0
B01-1
B01-2
B01-3
B01-4
B01-5
B01-6
B01-7
B01-8
Rated input voltage setting
[V]
Motor rated output
[kW]
No. of motor poles
[Pole]
Rated output voltage
[V]
Max. speed
[min
−
1
]
Base speed
[min
−
1
]
Motor rated current
[A]
Carrier frequency
[kHz] : (Note 1)
No. of encoder pulses
[P/R] : (Note 2)
* When the motor works under constant power operation, the excitation inductance fluctuation
must be compensated.
Assign the operation range to the table reference speed in B33-0 to 7.
Note that the motor will rotate to the max. speed in this case, so take special care to safety.
* The max. speed cannot be set below the base speed, and the base speed cannot be set
above the max. speed.
(Note 1) During IM speed sensor-less vector control (C30-0 = 3), it is recommended to set the
carrier frequency to 10KHz to improve the current detection accuracy.
(Note 2) Always enter encoder pulse numbers when using the speed sensor.
4) Selection of automatic tuning function
• Set A05-0 to 1. (enables parameter display)
• By parameter (B19-0), select the automatic tuning mode according working conditions. Refer to
section 3-6-1 for details.
• The automatic tuning will star when the
key is pressed.
• During the automatic tuning state, the LCL LED will blink.
• To abort the automatic tuning standby state, press the
key.
