Mitsubishi FR-A721-11K Instruction Manual page 144

Parameter
Name
840
Torque bias selection
841
Torque bias 1
842
Torque bias 2
843
Torque bias 3
844
Torque bias filter
845
Torque bias operation time
Torque bias balance
846
compensation
Fall-time torque bias
847
terminal 1 bias
Fall-time torque bias
848
terminal 1 gain
849
Refer to Pr. 74.
850
Refer to Pr. 10.
—
853
Refer to Pr. 285.
854
Excitation ratio
Terminal 4 function
858
assignment
Terminal 1 function
868
assignment
859, 860
Refer to Pr. 82.
—
862
Notch filter time constant
863
Notch filter depth
Incre Initial
Range
ments Value
Set the contact signal (X42, X43) based-torque bias
0
amount using Pr.841 to Pr.843.
Set the terminal 1-based torque bias amount as
1
desired in C16 to C19. (forward rotation)
Set the terminal 1-based torque bias amount as desired
1 9999 2
in C16 to C19. (reverse rotation)
The terminal 1-based torque bias amount can be set
3 automatically in C16 to C19, Pr.846 according to the
load.
9999 Without torque bias, rated torque 100%
600 to
Negative torque bias amount (-400% to -1%)
999%
1000 to
1% 9999
Positive torque bias amount (0% to 400%)
1400%
9999 Without torque bias setting
0 to 5s Time until torque rises.
0.001s 9999
9999 Same operation as when 0s is set.
Time for maintaining torque equivalent to the torque
0 to 5s
bias amount.
0.01s 9999
9999 Same operation as when 0s is set.
0 to 10V Set the voltage under balanced load.
0.1V 9999
9999 Same operation as when 0V is set.
0 to 400% Set the bias value of the torque command.
1% 9999
9999 Same as at a rise time (C16, C17).
0 to 400% Set the gain value of the torque command.
1% 9999
9999 Same as at a rise time (C18, C19).
Set the excitation ratio under no load.
1% 100% 0 to 100%
0 Frequency/speed command
1 Magnetic flux command
1 0
4 Stall prevention/torque limit
9999 No function
0 Frequency setting auxiliary
1 Magnetic flux command
2 Regenerative torque limit
1 0
3 Torque command
4 Stall prevention/torque limit/torque command
5 Forward/reverse rotation speed limit
6 Torque bias
9999 No function
You can use the mechanical resonance speed to
make this setting to reduce the response level of the
1 0 0 to 60
mechanical resonance frequency band, avoiding
mechanical resonance.
0 Deep (-40dB)
↑ (-14dB)
1
1 0
↓ (-8dB)
2
3 Sharrow (-4dB)
Parameter List
Description
137
4