Torque Control - Mitsubishi Electric FR-E800 Series Instruction Manual

6

Torque Control

Purpose
Torque command source selection or
torque command value setting
To prevent the motor from
overspeeding
To raise precision of torque control
6.1
Torque control
This chapter explains the torque control under Real sensorless vector control or Vector 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.
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6. Torque Control
6.1 Torque control
P.D400 to P.D402, P.G210,
Torque command
P.H704
Speed limit P.H410 to P.H412
Torque control gain P.G213, P.G214, P.G313,
adjustment P.G314
Parameter to set
Pr.801, Pr.803 to Pr.806
Pr.807 to Pr.809
Pr.824, Pr.825, Pr.834,
Pr.835
Refer
to page
143
147
149