Torque Control Under Real Sensorless Vector Control And Vector Control; Torque Control - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

5.4
Torque control under Real sensorless vector
control and Vector control
Purpose
Torque command source selection or
torque command value setting
To prevent the motor from
overspeeding
To raise precision of torque control
To stabilize torque detection signal
5.4.1

Torque control

• Under torque control, output torque 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.
P.D400 to P.D403, P.G210,
Torque command
P.H704
Speed limit P.H410 to P.H412, P.H414
Torque control gain P.G213, P.G214, P.G313,
adjustment P.G314
Torque detection
P.G216, P.G316
filter

5.4 Torque control under Real sensorless vector control and Vector control

Parameter to set
Pr.801, Pr.803 to Pr.806,
Pr.1114
Pr.807 to Pr.809, Pr.1113
Pr.824, Pr.825, Pr.834,
Pr.835
Pr.827, Pr.837
1
2
Refer
to page
3
270
274
4
280
316
5
6
7
8
9
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263
5. PARAMETERS