Mitsubishi Electric 800 Series Instruction Manual page 199

Torque control under Real sensorless vector control and vector control
Speed limit mode 2 (Pr.1113="0", initial value)
• Following the polarity change in the torque command, the polarity of the speed limit value changes. This prevents the
speed from increasing in the torque polarity direction. (When the torque command is 0, the polarity of the speed limit value
is positive.)
• When Pr.807 Speed limit selection="0 or 2", the speed setting value for speed control is applied for the speed limit. When
Pr.807 Speed limit selection="1", the setting of Pr.808 Forward rotation speed limit/speed limit is applied for the speed
limit.
• When the load has reversed the rotation opposite to the torque polarity, the setting of Pr.809 Reverse rotation speed limit/
reverse-side speed limit is applied for the speed limit. (The speed limit value and reverse-side speed limit value are
limited at Pr.1 Maximum frequency (maximum 400 Hz under vector control).)
Reverse-side
speed limit value
-Pr.809
-Speed limit value
Rotation speed
Speed limit value
-Pr.809
Reverse-side
speed limit value
OFF
Start signal
When the torque command value is positive
198
PARAMETERS
Torque
command
value Speed limit value
Range where torque
control is available
Rotation speed
Reverse-side
speed limit value
Pr.809
Range where torque
control is available
Pr.7 Pr.8
ON
Rotation speed
Pr.809
Reverse-side
speed limit value
Time
Speed limit value
Start signal
When the torque command value is negative
Range where torque
control is available
Pr.7
OFF ON
Time
Pr.8