Mitsubishi FR-A740-00023-EC - Page 119

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4
PARAMETERS
Speed control by real sensorless vector
control, vector control
(2) Setting torque bias amount with the contact input (Pr. 840 = "0")
⋅ Select the torque bias amount in the table below according to the combination of contact signals.
⋅ Set "42" in Pr. 178 to Pr. 189 (input terminal function selection) for the terminal used for X42 signal input and set "43" for
the terminal used for X43 signal input to assign functions.
Example) when Pr. 841 = 1025, 25% when Pr. 842 = 975, -25% when Pr. 843 = 925, -75%
(3) Setting torque bias amount with terminal 1 (Pr. 840 = "1, 2")
⋅ Calculate torque bias from the load input from terminal 1 as shown in the diagram below and provide torque bias.
⋅ When torque bias amount is set from terminal 1, set "6" in Pr. 868 Terminal 1 function assignment .
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%)
CAUTION
Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Make
setting after confirming the function of each terminal.
Pr. 840
Setting
Rise (Motor Forward Rotation) Fall (Motor Reverse Rotation)
1
2
Torque command
terminal 1 gain
C18(Pr. 920)
Torque command
terminal 1 bias
C16(Pr. 919)
Voltage for
max. load
C19(Pr. 920)
Voltage for
balanced load
Pr. 846
Terminal 1
input
Bias amount
C17(Pr. 919)
Voltage for
max. load
C19(Pr. 920)
Voltage for
balanced load
Pr. 846
Bias amount
Terminal 1
input
Fall-time
torque bias
terminal 1
gain
P
r. 847
Fall-time
torque bias
terminal 1
bias
Pr. 848
C17(Pr. 919)
Torque command
terminal 1 gain
C18(Pr. 920)
Voltage for
max. load
C19(Pr. 920)
Voltage for
balanced load
Pr. 846
Bias amount
Terminal 1
input
Torque command
terminal 1 bias
C16(Pr. 919)
C17(Pr. 919)
Voltage for
max. load
C19(Pr. 920)
Voltage for
balanced load
Pr. 846
Bias amount
Terminal 1
input
Fall-time
torque bias
terminal 1
bias
P
r. 847
Fall-time
torque bias
terminal 1
gain
P
r. 848
C17(Pr. 919)