Mitsubishi Electric 800 Series Instruction Manual page 526

Tuning the second applied motor (Pr.463)
• When performing operation where two motors are switched between one inverter, set the second motor in Pr.450 Second
applied motor, set Pr.463 Second motor auto tuning setting/status = "11", and perform tuning of the second motor.
• Turning ON the RT signal will enable the parameter settings for the second motor as shown below.
Function
Motor constant (R1)
Auto tuning setting/status
Frequency search gain
NOTE
• 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.
CAUTION
 Note that the motor may start running suddenly.
 For the offline auto tuning in vertical lift applications, etc., caution is required to avoid falling due to
insufficient torque.
Parameters referred to
Pr.9 Electronic thermal O/L relay
Pr.65, Pr.67 to Pr.69 retry function
Pr.71 Applied motor page 423
Pr.79 Operation mode selection
Pr.156 Stall prevention operation selection
Pr.178 to Pr.189 (Input terminal function selection)
RT signal ON (second motor)
Pr.458
Pr.463
Pr.560
page 317
page 327
page 332
page 415
(A) Application parameters
RT signal OFF (first motor)
Pr.90
Pr.96
Pr.298
525
PARAMETERS
5
GROUP
A