Fuji Electric ALPHA7, Руководство пользователя

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CHAPTER 2 WIRING
2-66
Description of I/O Signals
2
Free-run [BX]: Sequence input signal (Reference value 54)
To put the servomotor forcibly into free-run (coast-to-stop).
Priority is given to this signal in all control modes.
 Function
While the free-run [BX] signal assigned to a CONT input signal remains turned on, the output of the
servo amplifier is shut off and the servomotor free-run.
The output shaft of the servomotor decelerates (accelerates) according to the torque of the load.
The free-run signal is enabled in all control modes (position control, speed control and torque
control modes).
In case it is used for vertical transportation purpose, note that there is a risk of falling.
Under position control, the number of output pulses sent from the host controller deviates from the
revolution amount of the servomotor because the servomotor free-run while the signal remains
turned on.
 Parameter setting
To assign the free-run to a sequence input terminal, specify the corresponding value ("54") to the
input terminal function setting parameter.
This signal is handled to be always turned off if it is not assigned to the sequence input terminal.