MHT258a (Engl.)5-53
5.7.7 Free-run [BX]
This function puts the motor into free-run status forcibly.
While free-run [BX] signal is on, the motor is in free-run status. Motor decelerates (or accelerates) with the loaded torque.
The [BX] signal is always effective in any control status (position control, speed control and torque control).
In position control, while this signal is on, the motor free-runs. If this signal is turned on when performing position control using pulse train,
the output pulse count of the host controller may differ from the motor rotational quantity.
In speed control or torque control, the motor immediately free-runs. If this signal is turned off during deceleration, the command speed or
command torque can be output.
■ Interface
■ Parameter setting
To allocate the free-run signal to the control input terminal, set (54) to the system para.
■ Related item
The free-run signal takes the precedence over any other signals in all the control modes.
5.7.8 P-action
The speed control is subordinate to proportional band control.
This signal should be turned on while locking the motor shaft mechanically, with the run command [RUN] on. See 5.7.1 Brake timing.
Speed control or position control becomes unstable if P-action signal is on during motor running. Never put this signal on during motor
running.
■ Interface
■ Parameter setting
To allocate the P-action signal to the control input terminal, set (29) to the system para. If this signal is not allocated to the control input
terminal, this signal is deemed "always off."
For safety purpose, do not use this signal to the machine which moves vertically.
Free-run (54)
ON : In free-run status
OFF : In normal operation status
P-action (29)
ON : In P-action (proportional band control)
OFF : In normal operation
P24
M24
2.2k
+24V
P24
M24
2.2k
+24V
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