Mitsubishi Electric FR-A740-00023 Instruction Manual page 200

Selection and protection of a motor
(6) Tune second applied motor
· When you want to switch two motors with one inverter, set the second motor in Pr. 450 Second applied motor (refer to
page 179). Initial setting is without second applied motor.
· Turning the RT signal on makes the following parameters for the second parameters valid.
Functions
Motor capacity
Number of motor poles
Motor excitation current
Motor rated voltage
Rated motor frequency
Motor constant (R1)
Motor constant (R2)
Motor constant (L1)
Motor constant (L2)
Motor constant (X)
Auto tuning setting/status
REMARKS
· The RT signal is assigned to the terminal RT in the initial setting. By setting "3" in any of Pr. 178 to Pr. 189 (input terminal function
selection), you can assign the RT signal to the other terminal.
CAUTION
· Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Please
make setting after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 7 Acceleration time, Pr. 8 Deceleration time
Pr. 9 Electronic thermal O/L relay
Pr. 71 Applied motor Refer to page 179
Pr. 80 Motor capacity, Pr. 81 Number of motor poles
Pr. 95 Online auto tuning selection
Pr. 156 Stall prevention operation selection
Pr. 178 to Pr. 189 (input terminal function selection)
Pr. 190 to Pr. 196 (output terminal function selection)
Pr. 800 Control method selection
190
RT Signal ON
(second motor)
Pr. 453
Pr. 454
Pr. 455
Pr. 456
Pr. 457
Pr. 458
Pr. 459
Pr. 460
Pr. 461
Pr. 462
Pr. 463
Refer to page 167
Refer to page 175
Refer to page 87
Refer to page 191
Refer to page 144
Refer to page 222
Refer to page 230
Refer to page 87
RT Signal OFF
(first motor)
Pr. 80
Pr. 81
Pr. 82
Pr. 83
Pr. 84
Pr. 90
Pr. 91
Pr. 92
Pr. 93
Pr. 94
Pr. 96