Mitsubishi Electric 800 Series Instruction Manual page 200

Speed limit mode 3 (Pr.1113="1")
• Select this mode when the torque command is positive. The forward rotation command is for power driving (such as
winding) and the reverse rotation command is for regenerative driving (such as unwinding). (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 negative, the setting of Pr.809 Reverse rotation speed limit/reverse-side speed
limit is applied to prevent the speed from increasing in the reverse 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
Reverse-side Torque
speed limit value command
-Pr.809
For forward rotation command
Rotation speed
Pr.7
Speed limit value
-Pr.809
Reverse-side
speed limit value
OFF ON
Start signal
For power driving
by forward rotation command (winding)
Torque control under Real sensorless vector control and vector control
Winding
(power driving)
Forward
rotation
Unwinding
(regenerative driving)
Reverse
rotation
value
Speed limit value
Forward rotation
power driving
Rotation speed
Range where torque
control is available
Range where torque
control is available
Pr.8
Time
Reverse-side
speed limit value
-Pr.809
Reverse rotation
regenerative driving
For reverse rotation command
Rotation speed
Range where torque
control is available
Speed limit value
-Pr.809
Reverse-side
Pr.7
speed limit value
OFF ON
Start signal
For regenerative driving
by reverse rotation command (unwinding)
Speed
limit
value Torque command value
Rotation speed
Range where torque
control is available
Time
Pr.8
PARAMETERS
5
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