Mitsubishi FR-A800

Torque control under Real sensorless vector control and vector control
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PARAMETERS
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)
Winding
(power driving)
Winding
(power driving)
Unwinding
(regenerative driving)
Forward
rotation
Forward
rotation
Reverse
rotation
Reverse
rotation
Pr.7
ONOFF
Start signal
Rotation speed
Time
Torque
command
value
Speed limit value
Reverse-side
speed limit value
Rotation speed
Pr.809
Range where torque
control is available
Range where torque
control is available
Speed limit value
Pr.8
Pr.809
Reverse-side
speed limit value
Pr.7
ONOFF
Start signal
Rotation speed
Time
Speed limit value
Pr.8
Pr.809
Reverse-side
speed limit value
Range where torque
control is available
For regenerative driving
by forward rotation command (unwinding)
For power driving
by reverse rotation command (winding)
For reverse rotation command
Torque
command
value
Speed limit value
Reverse-side
speed limit value
Rotation speed
Pr.809
Range where torque
control is available
For forward rotation command
Reverse rotation
power driving
Forward rotation
regenerative driving