Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

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Real sensorless vector control, vector control, PM sensorless vector control adjustment Parameters
5 - 196
5.6.3 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 toward disturbance, decreasing time until it returns to original current value.
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.
NOTES When excitation ratio is reduced, output torque startup is less responsive.
Pr. 834 "Torque control P gain 2"and Pr. 835 "Torque control integral time 2" are valid when termi-
nal RT is ON. In this case, replace them for Pr. 824 and Pr. 825 in the description above.
PM PM PM