Mitsubishi Electric FR-A800, Instruction Manual

Page: 638 / 1042

(C) Motor constant parameters Parameters
5 - 458
Setting
●
To perform tuning, set the following parameters about the motor.
Set Pr. 71 "Applied motor" according to the motor to be used. According to the Pr. 71 setting, the
range of the motor constant parameter setting values and units can be changed. (For other setting
values of Pr. 71, refer to page 5-434.)
●
For the tuning accuracy improvement, set the following parameter when the motor constant is
known in advance.
The setting is valid only when both of the Pr. 707 (Pr. 744) and Pr. 724 (Pr. 745) settings are other
than "9999".
First
motor Pr.
Second
motor Pr.
Name
Setting for a PM motor other than
MM-CF
Setting for MM-CF
80 453 Motor capacity Motor capacity (kW)
Set by the IPM
parameter initialization
(Refer to page 5-71.)
81 454 Number of motor poles The number of motor poles (2 to 12)
9 51
Electronic thermal O/L
relay
Rated motor current (A)
84 457 Rated motor frequency Rated motor frequency (Hz)
83 456 Rated motor voltage Rated motor voltage (V)
Rated motor voltage (V)
written on the rated
plate
71 450 Applied motor
8090, 8093 (IPM motor)
9090, 9093 (SPM motor)
330 and 333
96 463 Auto tuning setting/status 1 11
Tab. 5-186: Set the parameters before performing tuning
Motor
Pr. 71 setting
Motor constant parameter
Ω
, mH and A unit setting
Motor constant parameter
Internal data setting
IPM motor
MM-CF 330 333 (334)
Other than MM-CF 8090 8093 (8094)
SPM motor 9090 9093 (9094)
Tab. 5-187: Motor selection
NOTES If PM sensorless vector control is performed, tuning cannot be performed even when Pr. 96 =
"101" is set. If MM-CF is set to the applied motor, tuning cannot be performed even when Pr. 96 =
"1, 101" is set.
First
motor Pr.
Second
motor Pr.
Name
Setting for a PM motor other than
MM-CF
Setting for MM-CF
702 743
Maximum motor
frequency
The maximum motor frequency [Hz] 9999 (initial value)
707 744 Motor inertia (integer)
Motor inertia
Jm = Pr. 707 × 10^(– Pr. 724) [kg/m
2
]
9999 (initial value)
724 745 Motor inertia (exponent)
725 746
Motor protection current
level
Maximum current level of the motor [%] 9999 (initial value)
Tab. 5-188: Parameter settings to improve the tuning accuracy