Mitsubishi Electronics FR-A700 Manual De Usuario

 

⋅ For general adjustment, make setting within the range 50 to 200% as a guideline.
⋅ Set the proportional gain for torque control.
⋅ Increasing the value improves trackability in response to a current command change and reduces current variation

with disturbance. However, a too large gain will cause instability, generating harmonic torque pulsation.

⋅ Set the integral time of current control during torque control. 
⋅ A small value enhances the torque response level, but a too small value will cause current fluctuation.
⋅ Decreasing the value shortens the time taken to return to the original torque if current variation with disturbance

occurs.

⋅ When you want to change the gain according to applications, switch multiple motors with one inverter, etc., use

Torque control P gain 2 and Torque control integral time 2 .

⋅ Pr. 834 Torque control P gain 2 and Pr. 835 Torque control integral time 2 are valid when the RT signal is ON.

Although stable operation is possible with the initial value, make adjustment when any of such phenomena as
unusual motor and machine vibration/noise and overcurrent has occurred. 

100%

0 to 200%

Set the current loop proportional gain.
100% is equivalent to 2000rad/s.

5ms

0 to 500ms

Set the current loop integral compensation time. 

9999

0 to 200%

Set the current loop proportional gain when the RT 
signal is ON.

9999

Without torque control P gain 2 function

9999

0 to500ms

Set the current loop integral compensation time when 
the RT signal is ON.

9999

Without torque control integral time 2 function

⋅ 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 terminal RT 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.