Mitsubishi Electric 800 Series Instruction Manual page 201

Torque control under Real sensorless vector control and vector control
Speed limit mode 4 (Pr.1113="2")
• Select this mode when the torque command is negative. The forward rotation command is for regenerative driving (such as
unwinding) and the reverse rotation command is for power driving (such as winding). (Refer to each inside of the frames in
the following figures.)
• 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 torque command becomes positive, the setting of Pr.809 Reverse rotation speed limit/reverse-side speed
limit is applied to prevent the speed from increasing in the forward rotation direction. (The speed limit value and reverse-
side speed limit value are limited at Pr.1 Maximum frequency (maximum 400 Hz under vector control).)
Unwinding
(regenerative driving)
Forward
rotation
Winding
(power driving)
Reverse
rotation
Speed limit value
Reverse rotation
power driving
For reverse rotation command
Rotation speed
Pr.809
Reverse-side
speed limit value
Speed limit value
Pr.7
OFF ON
Start signal
For power driving
by reverse rotation command (winding)
200
PARAMETERS
Winding
(power driving)
Unwinding
(regenerative driving)
Reverse-side
Torque
speed limit value
command
value
Pr.809
Rotation speed
Range where torque
control is available
Range where torque
control is available
Time
Pr.8
Forward
rotation
Reverse
rotation
Torque
command
value
Speed limit value
Forward rotation
regenerative driving
For forward rotation command
Rotation speed
Pr.809
Reverse-side
speed limit value
Speed limit value
OFF
Start signal
For regenerative driving
by forward rotation command (unwinding)
Reverse-side
speed limit value
Pr.809
Range where torque
control is available
Rotation speed
Range where torque
control is available
Pr.7 Pr.8
ON
Time