Mitsubishi Electric FR-A800, Instruction Manual

Page: 315 / 1042

Parameters Torque control under Real sensorless vector control and vector control
FR-A800 5 - 135
Modifying the torque characteristics in the constant output area (Pr. 803)
●
Because of the motor characteristics, torque is reduced at base frequency or higher. To generate
a certain amount of torque at base frequency or higher, use Pr. 803 "Constant output range torque
characteristic selection" = "1 or 11".
●
Under torque control, the torque generated in the low-speed range is constant regardless of
Pr. 803 setting.
Reverse selection of the torque command (Pr. 1114)
Whether the torque command polarity is reversed or not when the reverse rotation command (STR)
is turned ON can be selected using Pr. 1114 "Torque command reverse selection".
Pr. 803 setting Torque characteristic in the constant output range
0 (initial value), 10 Constant motor output
1, 11 Constant torque
Tab. 5-47: Torque characteristics in the constant output area
I001526E
Fig. 5-47: Motor characteristic
Pr. 1114 setting Torque command polarity at STR signal ON (sign)
0 Not reversed
1 (initial value) Reversed
Tab. 5-48: Reverse selection of the torque command
Parameters referred to
Pr. 868 Terminal 1 function assignment => page 5-394
Calibration parameter
C16 (Pr. 919) to
C19 (Pr. 920)
(terminal 1 bias, gain torque) => page 5-409
Torque
Base speed
Constant torque range
Constant power range
Pr. 803 = 1, 11:
constant torque limit
Pr. 803 = 0, 10:
constant power limit
(torque reduction)
Speed