Block diagram
Speed command
Torque bias selection 1
Torque bias selection 2
Setting the torque bias amount using contact input (Pr.840 = "0", Pr.841
to Pr.843)
• Select the torque bias amount shown in the following table 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 selection1
(X42)
OFF
ON
OFF
ON
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.
Setting the torque bias amount using terminal 1 (Pr.840 ="1, 2", Pr.847,
Pr.848)
• Calculate the torque bias from the load input to terminal 1 as shown in the following diagram, and then apply the torque
bias.
• To set the torque bias amount with a voltage input to terminal 1, set Pr.868 Terminal 1 function assignment ="6".
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5. PARAMETERS
5.3 Speed control under Real sensorless vector control, vector control, PM sensorless vector control
Speed command
+
-
Internal parameters
X42
[Pr. 841]
[Pr. 842]
X43
[Pr. 843]
SD
Torque bias selection2
(X43)
OFF
0%
Pr.841 -400% to +400% (Setting value: 600 to
OFF
1400%)
Pr.842 -400% to +400% (Setting value: 600 to
ON
1400%)
Pr.843 -400% to +400% (Setting value: 600 to
ON
1400%)
Speed
+
control
P gain
+
Speed
control
integral time
0
Integration cleared to 0
[Pr. 845]
[Pr. 840 = 0]
CW
C16, C17
+
[Pr. 919]
-
C18, C19
[Pr. 846]
CW > Cage
[Pr. 920]
Torque bias amount
+
Torque
IM
control
+
PLG
[Pr. 840 = 1, 2, 3]
Cage
[Pr. 826]
Torque setting filter 1
Terminal 1
Load
detector
CW
Cage