Mitsubishi Electric FR-A800, Instruction Manual

Page: 306 / 1042

Torque control under Real sensorless vector control and vector control Parameters
5 - 126
Operation transition
●
If the setting value of Pr. 7 and Pr. 8 is "0", turning OFF the start signal enables speed control, and
the output torque is controlled by the torque limit value.
I002530E
Fig. 5-39: Transition operation
I002531E
Fig. 5-40: Transition operation
Item Description
Start signal
External operation STF, STR signal
PU operation FWD or REV key on the operation panel or the parameter unit
Torque command Selects the torque command input method and inputs the torque command.
Speed limit Selects the speed limit input method and inputs a speed limit value.
Tab. 5-45: Signal input
Speed limit value is
increased up to preset value
according to the Pr. 7
Acceleration time setting.
Speed limit value
Torque control
Speed limit
Speed limit value is decreased
down to zero according to the Pr. 8
Deceleration time setting.
Output torque is provided
according to the terminal 1
setting.
Speed control is peformed during speed
limit. (Thus, torque according to the
commanded is not developed.)
Speed limit
Speed
Start signal
Output torque
Speed
Start signal
Output torque
Torque control
Limit at the torque limit value
Speed control
(speed limit)
Output torque is provided
according to the terminal 1
setting.
Speed limit value