Mitsubishi Electric FR-A800 Series Instruction Manual page 292

• 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).)
Rotation speed
Speed limit value
Reverse-side
speed limit value
Start signal
 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 following
figures.)
• When Pr.807 Speed limit selection = "0, 2", the setting during speed control is applied for the speed limit. When Pr.807
Speed limit selection = "1", Pr.808 Forward rotation speed limit/speed limit is applied for the speed limit.
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Reverse-side Torque
speed limit value command
-Pr.809 value Speed limit value
-Speed limit value Reverse-side
speed limit value
Range where torque
control is available
Pr.7
-Pr.809
OFF ON
When the torque command value is positive
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Range where torque
control is available
Rotation speed
Pr.809
Rotation speed
Pr.8
Reverse-side
speed limit value
Time
Speed limit value
Start signal
When the torque command value is negative
5.4 Torque control under Real sensorless vector control and Vector control
Range where torque
control is available
Pr.809
Pr.7
OFF ON
1
2
3
4
5
6
7
Time
Pr.8
8
9
10
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5. PARAMETERS