Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Torque control by real sensorless vector control, vector control
FR-A700 EC 6 - 123
NOTES When speed limit operation starts, speed control is exercised to enable internal torque limit
(Pr. 22 "Torque limit level") (initial value). Speed control may not be returned to torque con-
trol in this case. Torque limit be set to external torque limit (terminal 1, 4)
Undervoltage avoidance function (Pr. 261 = 11, 12) of power-failure deceleration stop func-
tion is made invalid under torque control. When Pr. 261 = 11 (12), the inverter operates in
the same manner as when 1 (2) is set in Pr. 261.
Set linear acceleration/deceleration (Pr. 29 = 0 (initial value)) when torque control is exer-
cised. When acceleration/deceleration patterns other than the linear acceleration/decelera-
tion are selected, the protective function of the inverter may function. (Refer to
section 6.11.3).
m
CAUTION:
Performing pre-excitation (LX signal and X13 signal) under torque control (real
sensorless vector control or vector control) may start the motor running at a low speed
even when the start command (STF or STR) is not input. The motor may run also at a
low speed when the speed limit value = 0 with a start command input. Perform pre-
excitation after making sure that there will be no problem in safety if the motor runs.