Mitsubishi Electric FR-E800, Инструкция по эксплуатации, Страница: 157 / 484

156
7. Adjustment during Real sensorless vector control, Vector control, PM sensorless vector control
7.3 Gain adjustment of current controllers for the d axis and the q axis
7.3
Gain adjustment of current controllers for the d
axis and the q axis
The gain of the current controller can be adjusted.
• Use Pr.824 Torque control P gain 1 (current loop proportional gain) to adjust the proportional gain of current
controllers for the d axis and the q axis. The 100% gain is equivalent to 1000 rad/s. Setting this parameter higher improves
the trackability for current command changes. It also reduces the current fluctuation caused by external disturbances.
• Use Pr.825 Torque control integral time 1 (current loop integral time) to set the integral time of current controllers for
the d axis and the q axis. If the setting value is small, it produces current fluctuation against external disturbances,
decreasing time until it returns to original current value.
NOTE
• Pr.834 Torque control P gain 2 (current loop proportional gain) and Pr.835 Torque control integral time 2 (current loop
integral time)
are valid when the RT signal turns ON.
In this case, replace them for Pr.824 and Pr.825 in the description above.
PM PM PM Vector Vector Vector
Pr. Name
Initial
value Setting
range
Description
824
G213 Torque control P gain 1 (current
loop proportional gain)
100% 0% to 500% The proportional gain of the current controller is set.
825
G214 Torque control integral time 1
(current loop integral time)
5 ms 0 to 500 ms The integral time of the current controller is set.