Mitsubishi Electric FR-F820-00077 Instruction Manual page 503

Parameters
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.
Tab. 5-156: Related Parameters
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.
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
Pr. 71
Pr. 80
Pr. 81
Pr. 96
Pr. 178 to Pr. 189
Pr. 190 to Pr. 196
FR-F800
Pr. Description
450 Applicable motor
Motor capacity
453
(with the rated motor current equal to or lower than the inverter rated current)
454 Number of motor poles
Electronic thermal O/L relay
Applied motor
Motor capacity
Number of motor poles
Auto tuning setting/status
(input terminal function selection)
(output terminal function selection)
(C) Motor constant parameters
=> page 5-150
=> page 5-297
page 5-41, page 5-45,
=>
page 5-316
page 5-41, page 5-45,
=>
page 5-316
=> page 5-45, page 5-316
=> page 5-285
=> page 5-231
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