Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Motor brake and stop operation
FR-A700 EC 6 - 241
6.13 Motor brake and stop operation
6.13.1 DC injection brake and zero speed control, servo lock (LX signal, X13
signal, Pr. 10 to Pr. 12, Pr. 802, Pr. 850)
The FR-A700 EC frequency inverter has an adjustable DC brake function.
The DC injection brake can be operated at a motor stop to adjust the stop timing and braking
torque. Zero speed control can be selected during real sensorless vector control and either zero
speed control or servo lock can be selected under vector control.In DC injection brake operation,
DC voltage is directly applied to the motor to prevent the motor shaft from rotating when a motor
decelerates to stop. While, in zero speed control, vector control is performed to maintain 0r/min.
In either control, the motor will not return to the original position if the motor shaft rotates due to
external force.
The motor shaft position is maintained with servo lock. The motor will return to the original posi-
tion if the motor shaft rotates due to external force.
Purpose Parameters that must be set
Refer to
Section
Motor braking torque adjustment DC injection brake and zero speed control, servo
lock Pr. 10 to Pr. 12,
Pr. 802, Pr. 850 6.13.1
Improve the motor braking torque
with an option Selection of a regenerative brake Pr. 30, Pr. 70 6.13.2
Performing operation by DC current
input DC current feeding mode Pr. 30 6.13.2
Coast the motor to a stop Selection of motor stopping method Pr. 250 6.13.3
Used to stop the motor with a
mechanical brake (vibration
restraint at stop-on-contact) Stop-on-contact control Pr. 270, Pr. 275,
Pr. 276 6.13.4
Used to stop the motor with a
mechanical brake (operation timing
of a mechanical brake) Brake sequence function Pr. 278 to Pr. 285,
Pr. 292 6.13.5
Perform position stop (orientation)
control of the rotation shaft Orientation control Pr. 350 to Pr. 366,
Pr. 369, Pr. 393,
Pr. 396 to Pr. 399 6.13.6