YASKAWA yasnac lx3 - OPERATION IS NOTAVAILABLE W ITHG32, G76 or G92 4. C

4.3.15 OPERATIONIS NOTAVAILABLEWITHG32, G76 ORG92
—
Cause of Trouble
Pulse of spindle en-
coder does not return.
Unevenness of starting
point pulse(C phase)
Slip of chuck or spin-
dle
Servo response
Staggering of spindle
revolution
—
Failure of thread
cutting bias or accel-
eration/deceleration
setting
Spindle speed X F
(pitch) exceeds maximu
rating of machine.
Check Method
;heck POSS on POS screen(failure of A
~nd/or B phase).
;an be observed by~#1287 if at low
speed revolution such as manual
rota+tion.
0 phase is faulty if GOl(mm/rev) is
proper and G32 is faulty.
Occurs when thread is shifted.
Occurs when thread pitch is shifted,
Ensure the servo response with TG-M,
Check if POS S staggers on the POS
screen.
m #6306 X-axis acceleration/dece lera-
tion at thread cutting
#6307 Z-axis acceleration/decelera-
tion at thread cutting
#6308 X-axis bias at thread cutting
X6309 Z-axis bias at thread cutting
Check the program.
Solution
~ailure of encoder, loosen
:able, timing belt or con-
~ector, or PG interface
railure of MB20.
——
ieplace the spindle PG.
:heck wiring.
;heck the function of
nachine.
\djust KP(L-GAIN).
~ailure of spindle clrive
mit, spindle drive unit,
spindle motor, DAoutput
of MB20, or noise
Adjust parameters.
Reduce the commandfor
spindle speed.
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