Mitsubishi Electric FR-A820-00046 Instruction Manual page 301

Parameters Speed control under Real sensorless vector control, vector control, PM sensorless vector control
Changing the setting increments of the torque limit level (Pr. 811)
● The setting increments of Pr. 22 "Torque limit level" and Pr. 812 to Pr. 817 (torque limit level) can
be changed to 0.01% by setting Pr. 811 "Set resolution switchover" = "10, 11".
Pr. 811 setting
0
1
10
11
Tab. 5-31:
For the change of the speed setting increments using a communication option, refer to the
Instruction Manual of the communication option.
NOTES
The internal resolution of the torque limit is 0.024% (100/2
are rounded off.
When Real sensorless vector control is selected, fractions below a resolution equivalent to 0.1%
are rounded off even if Pr. 811 = "10, 11" is set.
For details on changing the speed setting increments, refer to page 5-341.
Changing the torque characteristic of the constant-output range (Pr. 803)
In torque limit operations under Real sensorless vector control or vector control, the torque charac-
teristic in a low-speed range and constant-output range can be changed.
Pr. 803 setting
Tab. 5-32:
Valid only under Real sensorless vector control.
FR-A800
Speed setting, running speed monitor increments from PU,
RS-485 communication, communication options
Torque limit level increments
Torque characteristic in low-speed range
0
Torque rise
1 Constant torque
10 Constant torque
11
Torque rise
Torque characteristic in a low-speed range and constant-output range
1 r/min
0.1 r/min
1 r/min
0.1 r/min
12
Torque limit setting increments
Pr. 22, Pr. 812 to Pr. 817
0.1%
0.01%
), and fractions below this resolution
Torque characteristic in constant-output
range
Constant motor output
Constant torque
Constant motor output
Constant torque
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