Mitsubishi Electric FR-A820-00046 Instruction Manual page 322

Speed control under Real sensorless vector control, vector control, PM sensorless vector control
Block diagram
Torque bias selection 1
Torque bias selection 2
Fig. 5-31:
Setting the torque bias amount using contact input (Pr. 840 = "0", Pr. 841 to Pr. 843)
● Select the torque bias amount shown in the table below using the corresponding contact signal
combination.
● To input the X42 signal, set "42" in any of Pr. 178 to Pr. 189 (input terminal function selection) to
assign the function to a terminal, and to input the X43 signal, set "43".
Torque bias selection 1
Tab. 5-41:
● When Pr. 841 = "1025", the torque bias is 25%.
When Pr. 842 = "975", the torque bias is –25%.
When Pr. 843 = "925", the torque bias is –75%.
NOTE Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may
affect the other functions. Set parameters after confirming the function of each terminal.
5 - 120
Speed command Speed command
Internal parameters
X42
[Pr. 841]
[Pr. 842]
X43
[Pr. 843]
SD
Block diagram
Torque bias selection 2
(X42) (X43)
OFF OFF
ON OFF
OFF ON
ON ON
Setting torque bias amount with the contact input
Speed
+
control
P gain
-
Speed
control
integral time
0
Integration cleared to 0
[Pr. 845]
[Pr. 840 = 0]
C16, C17
+
[Pr. 919]
-
C18, C19
[Pr. 846]
[Pr. 920]
Torque bias amount
0%
Pr. 841 –400% to +400% (Setting value: 600 to 1400%)
Pr. 842 –400% to +400% (Setting value: 600 to 1400%)
Pr. 843 –400% to +400% (Setting value: 600 to 1400%)
+ +
Torque
M
3~
control
+ +
[Pr. 840 = 1, 2, 3]
Cage
[Pr. 826]
Torque setting filter 1
Cage
Terminal 1
Load
detector
Parameters
PLG
CW
Cage
I002522E