
B-65280EN/05 FANUC BUILT-IN SPINDLE MOTOR Bis series 2.EXPLANATION OF OPERATION MODES
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15i 16i 30i
3082 4082 4082
Setting of acceleration/deceleration time
Unit of data : 1sec
Valid data range : 0 to 255
Standard setting value : 10
This parameter sets a period of time in which alarm detection is
disabled by assuming that the spindle motor is being accelerated or
decelerated even if the velocity error exceeds the velocity error excess
alarm (SPM alarm 02) level after start of acceleration/deceleration on
the velocity control mode.
In the velocity control mode, a step-by-step speed command is
specified. So, the spindle motor cannot follow up the command
immediately after start of acceleration/deceleration, and the velocity
error exceeds the velocity error excess alarm level. This parameter is
used to prevent the velocity error excess alarm (SPM alarm 02) from
being detected incorrectly immediately after start of
acceleration/deceleration.
NOTE
With a machine tool such as a lathe that has a large
load inertia, the acceleration/deceleration time
becomes longer. In such a case, set the value
corresponding to the acceleration/deceleration time
of the machine in this parameter.