Mitsubishi Electric FR-V500 Instruction Manual page 188

• When Pr. 840 = 3
Pr. 904 "torque command terminal 3 bias", Pr. 905 "torque command terminal 3 gain" and Pr. 846 "torque bias
balance compensation" can be set automatically according to the load.
Pr. 904, Pr. 905 settings
Run under no load.
Press [WRITE] key.
(Pr. 905 setting
complete)
Pr. 846 setting
Balanced load
being carried.
CAUTION
When starting torque bias operation after completion of automatic setting, set "1 or 2" in Pr. 840.
2) Pr. 841 "torque bias 1", Pr. 842 "torque bias 2", Pr. 843 "torque bias 3"
On the assumption that the rated torque is 100%, the torque bias setting of 1000% is the center value of torque
and the bias value is "0".
Setting
600 to 999%
1000 to 1400%
9999
3) Pr. 844 "torque bias filter"
You can make a torque rise gentler. At this time, the torque rises according to the time constant of the primary
delay filter.
Setting
0 to 5s
9999
4) Pr. 845 "torque bias operation time"
Set the time for output torque be maintained with the torque bias command value alone.
Setting
0 to 5s
9999
5) Pr. 846 "torque bias balance compensation"
Set the voltage of the torque bias analog input value input to the terminal 3 to compensate for the balance of the
torque bias amount.
Setting
0 to 10V
9999
6) Pr. 847 "fall-time torque bias terminal 3 bias"
Set the torque bias amount at a fall time (when the motor runs in the reverse rotation direction).
Setting
0 to 400%
9999
7) Pr. 848 "fall-time torque bias terminal 3 gain"
Set the torque bias amount at a fall time.
Setting
0 to 400%
9999
Read Pr. 904 when
speed has stabilized.
Read Pr. 905 when
speed has stabilized.
Read Pr. 846.
Description
Negative torque bias amount (-400% to -1%)
Positive torque bias amount (0% to 400%)
Without torque bias setting
Description
Time until torque rises.
Same operation as when 0s is set.
Description
Time for maintaining torque equivalent to the torque bias amount.
Same operation as when 0s is set.
Description
Set the voltage under balanced load.
Same operation as when 0V is set.
Description
Set the bias value of the torque command.
Same as at a rise time (Pr. 904).
Description
Set the gain value of the torque command.
Same as at a rise time (Pr. 905).
179
Torque biases (Pr. 840 to Pr. 848)
Press [WRITE] key.
(Pr. 904 setting
complete)
Run under
maximum load.
Press [WRITE] key.
Torque balance compensation
in driving mode is complete.
3