Mitsubishi Electric FR-D700 Instruction Manual page 76

Adjust the output torque (current) of the motor
(3) Control method switching by external terminals (X18 signal)
Use the V/F switchover signal (X18) to change the control method (V/F control and general-purpose magnetic flux vector
control) with external terminal.
Turn the X18 signal on to change the currently selected control method (general-purpose magnetic flux vector control) to
V/F control.
For the terminal used for X18 signal input, set "18" in any of Pr. 178 to Pr. 182 (input terminal function selection) to assign the
function.
REMARKS
When V/F control is selected by V/F switchover (X18 signal), second function is also selected at the same time. Control between
V/F and general-purpose magnetic flux can not be switched while the inverter is running. In case control is switched between V/F
and general-purpose magnetic flux, only second function is selected.
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other
functions. Make setting after confirming the function of each terminal.
Parameters referred to
Pr.3 Base frequency, Pr.19 Base frequency voltage
Pr.71 Applied motor
Pr.77 Parameter write selection
Pr. 178 to Pr. 182 (input terminal function selection)
72
Refer to page 80
Refer to page 98
Refer to page 156
Refer to page 108