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

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Parameters Torque control under Real sensorless vector control and vector control
FR-A800 5 - 129
5.4 Torque control under Real sensorless vector control and
vector control
5.4.1 Torque control
●
Under torque control, the operation is controlled to output the torque as commanded.
●
Motor rotation speed is steady when the motor output torque and load torque are balanced.
Thus, motor speed during torque control is determined by the load.
●
Under torque control, motor speed accelerates so motor output torque does not exceed motor
load. In order to prevent the motor from overspeeding, set a speed limit. (Speed control is
performed instead of torque control during speed limit.)
●
If speed limit is not set, speed limit value setting is regarded as 0 Hz and torque control is not
enabled.
Purpose Parameter to set
Refer
to page
To select the torque command source and to
set the torque command value
Torque command
P.D400 to P.D402,
P.G210
Pr. 803 to Pr. 806 5-138
To prevent the motor from overspeeding Speed limit
P.H410 to P.H412,
P.H414 Pr. 807 to Pr. 809,
Pr. 1113
5-142
To raise precision of torque control
Torque control gain
adjustment P.G213, P.G214,
P.G313, P.G314 Pr. 824, Pr. 825,
Pr. 834, Pr. 835
5-150
To stabilize torque detection signal Torque detection filter P.G216, P.G316 Pr. 827, Pr. 837 5-194