Mitsubishi Electric FR-F820-00046, Instruction Manual

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Parameters (C) Motor constant parameters
FR-F800 5 - 331
Tuning the second applied motor (Pr. 574)
When switching two different motors by one inverter, set the second motor in Pr. 450 "Second applied
motor". (In the initial setting, no second motor is applied. (Refer to page 5-297.))
Pr. 574 is enabled when the Second function selection (RT) signal is turned ON.
If a motor with substantially low rated current compared with the inverter rated current is used,
speed and torque accuracies may deteriorate due to torque ripples, etc. Set the rated motor current
to about 40% or higher of the inverter rated current.
Pr. Description
450 Applicable motor
453
Motor capacity
(with the rated motor current equal to or lower than the inverter rated current)
454 Number of motor poles
Tab. 5-156: Related Parameters
NOTES The RT signal is a second function selection signal. The RT signal also enables other second func-
tions. (Refer to page 5-285.)
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.
Parameters referred to
Pr. 9 Electronic thermal O/L relay => page 5-150
Pr. 71 Applied motor => page 5-297
Pr. 80 Motor capacity =>
page 5-41, page 5-45,
page 5-316
Pr. 81 Number of motor poles =>
page 5-41, page 5-45,
page 5-316
Pr. 96 Auto tuning setting/status => page 5-45, page 5-316
Pr. 178 to Pr. 189 (input terminal function selection) => page 5-285
Pr. 190 to Pr. 196 (output terminal function selection) => page 5-231