Mitsubishi Electric FR-A820-00046 Instruction Manual Page 267

Parameters
Speed control under Real sensorless vector control, vector control, PM sensorless vector control
Torque limit level using parameter settings (Pr. 810 = "0", Pr. 812 to Pr. 814)
● The torque is limited by parameter setting. (Internal torque limit 1)
● In the initial value, a limit is applied to all quadrants with Pr. 22 "Stall prevention operation level
(Torque limit level)".
● To set individually for each quadrant, use Pr. 812 "Torque limit level (regeneration)", Pr. 813 "Torque
limit level (3rd quadrant)", Pr. 814 "Torque limit level (4th quadrant)". When "9999" is set, Pr. 22
setting is regarded as torque limit level in all the quadrants.
Reverse
regeneration
Reverse
rotation
Reverse
driving
Torque limit level using analog input (terminals 1, 4) (Pr. 810 = "1", Pr. 858, Pr. 868)
● The torque is limited with the analog input of terminal 1 or terminal 4 (external torque limit).
● Torque limit using analog input is valid with a limit value lower than the internal torque limit (Pr. 2,
Pr. 812 to Pr. 814). (If the torque limit using analog input exceeds the internal torque limit, the
internal torque limit is valid.)
● When inputting the torque limit value from terminal 1, set Pr. 868 "Terminal 1 function assign-
ment" = "4". When inputting from terminal 4, set Terminal 4 function assignment = "4".
● When Pr. 858 = "4" and Pr. 868 = "2", the torque for regenerative driving is limited with the terminal
1 analog input, and the torque for power driving is limited with the terminal 4 analog input.
Reverse
regeneration
Reverse
rotation
Reverse
driving
* Analog input (terminal 1, 4) or internal torque control (Pr. 22 etc.) whichever is smaller
Fig. 5-15:
FR-A800
Torque limit
(Pr. 814)
(Pr. 22)
(Pr. 813)
(Pr. 812)
Rated speed
Torque limit
Forward
(Pr. 22)
(Pr. 814)
rotation
(Pr. 813)
(Pr. 812)
regeneration
-
Rated speed
Fig. 5-14:
Torque limit level by parameter setting
Forward
driving
Forward
rotation
Speed
Forward
regeneration
Reverse
regeneratio
Forward
driving
Terminal 4 input or internal torque
limit whichever is smaller
Reverse rotation
Speed
Speed
Terminal 4 input or internal
torque limit whichever is smaller
Forward
Reverse
driving
Torque limit
Forward
driving
Terminal 4 input or internal
torque limit whichever is smaller
Forward rotation
Terminal 4 input or internal
torque limit whichever is smaller
regeneration
-
Rated speed
When Pr. 858 = 4, Pr. 868 = 2
I001502E
Forward
I002507E
5 - 87  