Mitsubishi Electric FR-D720-0.1K Instruction Manual page 107

(2) Use two motors (Pr. 450)
Set Pr. 450 Second applied motor to use two different motors with one inverter.
When "9999" (initial value) is set, no function is selected.
When a value other than 9999 is set in Pr. 450, the second motor is valid with the RT signal ON.
For the RT signal, set "3" in any of Pr. 178 to Pr. 182 (input terminal function selection) to assign the function.
REMARKS
The RT signal acts as the second function selection signal and makes the other second functions valid. (Refer to page 117)
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect other functions.
Set parameters after confirming the function of each terminal.
Set this parameter correctly according to the motor used.
Incorrect setting may cause the motor to overheat and burn.
Parameters referred to
Pr. 0 Torque boost
Pr. 12 DC injection brake operation voltage
Pr. 80 Motor capacity
CAUTION
Refer to page 75
Refer to page 110
Refer to page 106
Selection and protection of a motor
4
105