Mitsubishi Electric FR-A820-00046 Instruction Manual page 759

Parameters
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
Tab. 5-250: Turn on the RT signal to enable the parameters for the second motor
NOTES 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:
E
● 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
Pr. 65, Pr. 67 to Pr. 69
Pr. 71
Pr. 79
Pr. 156
Pr. 178 to Pr. 189
FR-A800
Electronic thermal O/L relay
Retry function
Applied motor
Operation mode selection
Stall prevention operation selection
(input terminal function selection)
RT signal ON (second motor)
Pr. 458
Pr. 463
Pr. 560
(A) Application parameters
RT signal OFF (first motor)
Pr. 90
Pr. 96
Pr. 298
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