Fuji Electric ALPHA5 Smart, User Manual

Page: 167 / 636

CHAPTER 3 OPERATION
Operation
3-25
3
(6) Deviation clear
If the deviation clear signal is detected during motor rotation, operation is stopped and immediate
controlled stop is caused according to the selected torque limit. (The maximum torque is assumed
if parameter setting is selected with the default setting). If “1” (level signal) is selected for parameter
PA3_36 (deviation clear input form), the motor is stopped at the zero speed and the current
position is not retained while the deviation reset signal remains active.
The in-position [INP] signal shown in the figure indicates the state in the level output
mode.
(7) Free-run
While the free-run signal is turned on, outputs of the servo amplifier are turned off and the
servomotor coasts to stop (at zero torque). (The motor rotation is not controlled.) If the free-run
signal is turned on during motor rotation, operation is stopped and the motor keeps rotating due to
the inertia of the load.
In regular cases, free-run is not used for vertical traveling machines. If the function is
used for a vertical traveling machine, examine adaptability with the brake carefully.
In addition to operation stop and interruption caused by input signals, detection of an alarm causes
the operation to be stopped. The stopping motion upon an alarm follows the setting of parameter
PA2_62 (serious alarms: fixed at free-run).
Speed
Time
[RDY]
ON
[INP] ON OFF
Deviation clear
ON
OFF
Zero deviation
Zero speed ON OFF
ON OFF
Speed
Time
[RDY]
[INP] ON OFF
ON
Zero deviation
Zero speed
ON OFF
ON OFF
ON Free-run OFF
OFF
OFF
ON