Mitsubishi Electric FR-D720-0.4K Instruction Manual page 80

Adjustment of 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
Switch the control method using external terminal (X18 signal) during an inverter stop. If control method between V/F control and
General-purpose magnetic flux vector control is switched during the operation, the actual switchover does not take place until the
inverter stops. In addition, if control method is switched to V/F control during the operation, only second function becomes valid as
V/F control and second functions are selected simultaneously in V/F control.
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 182 (input terminal function selection) may affect the other
functions. Set parameters 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)
78
Refer to page 86
Refer to page 104
Refer to page 162
Refer to page 114