Mitsubishi Electric FR-A700 Instruction Manual page 325

Parameter
Stabilize speed detection (Pr. 823, Pr. 833)
● Since the current loop response reduces, use it with the initial value.
Increase the setting value gradually and adjust the value to stabilize the speed when speed
ripples occur due to harmonic disturbance, etc. A too large value will run the motor unstably.
● Pr. 823 and Pr. 833 are valid only during vector control.
Stabilize speed detection (Pr. 827, Pr. 837)
● Since the current loop response reduces, use it with the initial value.
Increase the setting value gradually and adjust the value to stabilize the speed when torque
ripples occur due to harmonic disturbance, etc. A too large value will run the motor unstably.
Use multiple primary delay filters
● Use Pr. 833 and Pr. 837 to change the filter accroding to applications. Pr. 833 and Pr. 837
are valid when the RT signal is on.
NOTES
The RT signal acts as the second function selection signal and makes the other second
functions valid. (Refer to section 6.14.3.)
The RT signal is assigned to the RT terminal in the initial setting. By setting "3" in any of
Pr. 178 to Pr. 189 "Input terminal function selection", you can assign the RT signal to the
other terminal.
FR-A700 EC
Adjustment of real sensorless vector control, vector control
6 - 145