Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 322 / 1218

Speed control under Real sensorless vector control, vector control, PM sensorless vector control Parameters
5 - 120
Block diagram
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".
●
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%.
I002522E
Fig. 5-31: Block diagram
Torque bias selection 1
(X42)
Torque bias selection 2
(X43)
Torque bias amount
OFF OFF 0%
ON OFF Pr. 841 –400% to +400% (Setting value: 600 to 1400%)
OFF ON Pr. 842 –400% to +400% (Setting value: 600 to 1400%)
ON ON Pr. 843 –400% to +400% (Setting value: 600 to 1400%)
Tab. 5-41: Setting torque bias amount with the contact input
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.
CW
-
+
-
+
X42
X43
SD
+
+
0
+
+
Speed command
Torque bias selection 1
Torque bias selection 2
Speed command
Speed
control
P gain
Speed
control
integral time
Internal parameters
[Pr. 840 = 0]
[Pr. 845]
Integration cleared to 0
C16, C17
[Pr. 919]
C18, C19
[Pr. 920]
[Pr. 846]
[Pr. 841]
[Pr. 842]
[Pr. 843]
[Pr. 840 = 1, 2, 3]
[Pr. 826]
Torque setting filter 1
Cage
Cage
Torque
control
Cage
Load
detector
Terminal 1
M
3~
PLG