Mitsubishi Electric FR-A820-00046 Instruction Manual page 656

(C) Motor constant parameters
Using two types of motors (RT signal, Pr. 450)
● When using two types of motors with one inverter, set Pr. 450 "Second applied motor".
● The setting value "9999" (initial value) disables second applied motor.
● If Pr. 450 ≠ 9999, the following parameters will be enabled by turning ON the Second function
selection (RT) signal.
Function
Electronic thermal O/L relay
Applied motor
Control method selection
Motor capacity
Number of motor poles
Motor excitation current
Rated motor voltage
Rated motor frequency
Motor constant (R1)
Motor constant (R2)
Motor constant (L1)/d-axis inductance (Ld)
Motor constant (L2)/q-axis inductance (Lq)
Motor constant (X)
Auto tuning setting/status
Frequency search gain
Online auto tuning selection
Induced voltage constant (phi f )
Motor Ld decay ratio
Motor Lq decay ratio
Starting resistance tuning compensation
Starting magnetic pole position detection pulse
width
Maximum motor frequency
Motor inertia (integer)
Motor inertia (exponent)
Motor protection current level
Torque current/Rated PM motor current
Tab. 5-176: Validation of parameters by the RT signal
NOTES The RT signal is a second function selection signal. The RT signal also enables other second func-
tions. (Refer to page 5-445.)
The RT signal is assigned to the terminal RT in the initial status. Set "3" in any of Pr. 178 to Pr. 189
(input terminal function selection) to assign the RT signal to another terminal.
Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may
affect the other functions. Set parameters after confirming the function of each terminal.
5 - 454
RT signal ON (second motor)
Pr. 51
Pr. 450
Pr. 451
Pr. 453
Pr. 454
Pr. 455
Pr. 456
Pr. 457
Pr. 458
Pr. 459
Pr. 460
Pr. 461
Pr. 462
Pr. 463
Pr. 560
Pr. 574
Pr. 738
Pr. 739
Pr. 740
Pr. 741
Pr. 742
Pr. 743
Pr. 744
Pr. 745
Pr. 746
Pr. 860
Parameters
RT signal OFF (first motor)
Pr. 9
Pr. 71
Pr. 800
Pr. 80
Pr. 81
Pr. 82
Pr. 83
Pr. 84
Pr. 90
Pr. 91
Pr. 92
Pr. 93
Pr. 94
Pr. 96
Pr. 298
Pr. 95
Pr. 706
Pr. 711
Pr. 712
Pr. 717
Pr. 721
Pr. 702
Pr. 707
Pr. 724
Pr. 725
Pr. 859