Mitsubishi Electric FR-A820-00046 Instruction Manual page 294

Speed control under Real sensorless vector control, vector control, PM sensorless vector control
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 - 114
Torque bias selection 2
(X42) (X43)
OFF OFF
ON OFF
OFF ON
ON ON
Setting torque bias amount with the contact input
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%)
Parameters