Mitsubishi Electric FR-A700 Instruction Manual page 266

Speed control by real sensorless vector control, vector control
Setting increments switchover of the torque limit level (Pr. 811)
By setting "10, 11" in Pr. 811 "Set resolution switchover", the setting increments of Pr. 22
"Torque limit level" and Pr. 812 to Pr. 817 "Torque limit level" can be switched to 0.01%.
NOTES
The internal resolution of the torque limit is 0.024% (100/2
resolution is rounded off.
When the torque limit setting increments have been changed (0.1% ⇔ 0.01%), reset is nec-
essary because the settings of Pr. 22 and Pr. 812 to Pr. 817 are multiplied by 1/10 (ten
times).
For example, when 10 (0.01%) set in Pr. 811 is changed to 1 (0.1%) with Pr. 22 = 150.00%,
Pr. 22 = 1500.0% and the maximum torque is 400%.
Refer to section 6.15.1 for switchover of speed setting increments.
Change the torque characteristics in the constant power range (Pr. 803)
You can select whether the torque limit in the constant power range be constant torque limit (set-
ting is "1") or constant power limit (initial setting is "0"), using Pr. 803 "Constant power range
torque characteristic selection" under torque limit operation.
Torque command
Constant torque range
6 - 86
Constant power range
Pr. 803 = 1:
constant torque
limit
Pr. 803 = 0:
constant power limit
(torque reduction)
Base speed Speed
12
) and the fraction less than the
Fig. 6-13:
Torque characteristics in the constant power
range
Parameter
I001507E