
2.EXPLANATION OF OPERATION MODES FANUC AC SPINDLE MOTOR αi series B-65280EN/05
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NOTE
This parameter is valid with 9D50 Series N (14)
edition or later and 9D70 series D (04) edition or
later.
16i 30i
4516 4516
Excessive positional deviation alarm detection level on spindle synchronous
control
Unit of data : 100 pulses (weight of 4096 pulses/rev)
Valid data range : 0 to 32767
Standard setting : 0
This parameter sets a level for detecting the excessive positional
deviation alarm under spindle synchronous control.
If the positional deviation (position error) exceeds the value set in this
parameter in the spindle synchronous control mode, the excessive
positional deviation alarm under spindle synchronous control (SPM
alarm C9) is detected. When this parameter is set to 0, alarm detection
is disabled.
As an alarm level, set a value greater than the positional deviation
(position error) equivalent to the spindle speed specified in the spindle
synchronous control mode. The positional deviation equivalent to the
spindle speed can be calculated from the following expression:
Positional deviation [pulse]
= Spindle speed [min
-1
] / 60 × 4096 × 100 / PG
where
PG: Position gain on synchronous control (Nos.4065 to 4068)
NOTE
This parameter is valid with 9D50 Series N (14)
edition or later and 9D70 series D (04) edition or
later.