Mitsubishi Electric FR-F820-04750 Instruction Manual page 206

Control method
Driving two motors under Advanced magnetic flux vector control
● Turning ON the Second function selection (RT) signal enables the second motor operation.
● Set a second motor in Pr. 450 "Second applied motor". (In the initial setting, "9999 (no second
motor)" is selected. Refer to page 5-291.)
Function
Applied motor
Motor capacity
Number of motor poles
Speed control gain
(Advanced magnetic flux vector)
Tab. 5-18:
NOTES The RT signal is a second function selection signal. The RT signal also enables other second func-
tions. (Refer to page 5-285.)
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. 71, Pr. 450
Pr. 800
5 - 44
Switching the parameters by using the RT signal
Applied motor
Control method selection
RT signal ON (second motor)
Pr. 450
Pr. 453
Pr. 454
Pr. 569
Parameters
RT signal OFF (first motor)
Pr. 71
Pr. 80
Pr. 81
Pr. 89
=> page 5-291
=> page 5-38