Справочник Пользователя для Mitsubishi Electronics FR-A700

(1) 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

(2) 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 Pr. 833 and Pr. 837 to change the filter according to applications.  Pr. 833 and Pr. 837 are valid when the RT

signal is ON.

Set the time constant of the primary delay filter relative to the speed feedback signal and torque feedback signal.
Since this function reduces the speed loop response, use it with the initial value.

0.001s

0

Without filter

0.001 to 0.1s

Set the time constant of the primary delay filter 
relative to the speed feedback signal.

0s

0

Without filter

0.001 to 0.1s

Set the time constant of the primary delay filter 
relative to the torque feedback signal.

9999

0 to 0.1s

Second function of Pr. 823 (valid when RT signal is 
on)

9999

Same as the  Pr. 823 setting

9999

0 to 0.1s

Second function of Pr. 827 (valid when RT signal is 
on)

9999

Same as the  Pr. 827 setting

*1

This parameter can be set when the FR-A7AP/FR-A7AL (option) is mounted.

⋅ The RT signal acts as the second function selection signal and makes the other second functions valid. (Refer to page 235.)
⋅ 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.