Mitsubishi Electric FR-E800, Instruction Manual

Page: 137 / 484

136
6. Torque Control
6.1 Torque control
6
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.
Purpose Parameter to set
Refer
to page
Torque command source selection or
torque command value setting
Torque command
P.D400 to P.D402, P.G210,
P.H704
Pr.801, Pr.803 to Pr.806 143
To prevent the motor from
overspeeding
Speed limit P.H410 to P.H412 Pr.807 to Pr.809 147
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
149