Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 267

 Operation transition
Speed limit value is
increased up to preset value
according to the Pr.7
Acceleration time setting.
Speed
Start signal
Output torque
• 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.
Speed
Start signal
Output torque
Item
External
operation
Start signal
PU operation
Torque Select the method to give the torque command, and give the torque
command command.
Select the method to give the speed limit command, and input the speed
Speed limit
limit value.
 Operation example (when Pr.804 = "0")
Torque control is possible when actual rotation speed does not exceed the speed limit value.
When the actual speed reaches or exceeds the speed limit value, speed limit is activated, torque control is stopped and speed
control (proportional control) is performed.
266
5. PARAMETERS
5.4 Torque control under Real sensorless vector control and Vector control
Speed limit
Speed control is peformed during speed
limit. (Thus, torque according to the
commanded is not developed.)
Torque control
Description
STF, STR signal
or of operation panel/ parameter unit
Speed limit value is decreased
Speed limit value
down to zero according to the Pr.8
Deceleration time setting.
Torque control
Limit at the torque limit value
Speed limit
Output torque is provided
according to the terminal 1
setting.
Speed limit value
Speed control
(speed limit)
Output torque is provided
according to the terminal 1
setting.