
B–62755EN/01
10. TROUBLESHOOTING
(ANALOG INTERFACE SPINDLE)
407
Remove connector CN2 during
rotation, and the machine may
move a little.
NO
YES
NO
NO
YES
* Take enough care
* Do not execute frequently
YES
PAP
1 : 1
+5V
PBP
0V
+5V
0V
1 : 11/2
NO
YES
(Start)
Does it occur during
deceleration
Check waveform
with synchroscope
during rotation
· TSA
·ER
Check regenerative discharge
circuit (pause of regeneration)
· Check transistor module
If load inertia is large,
decrease value of F–20
* For 1S to 3S, disconnection of
transistor of discharge circuit or
discharge resistor
Is abnormality
confirmed?
Check relation between
frequency of vibration and
speed by changing speeds
Is abnormal
sound heard?
Electric system is abnormal
· Check incorrect signal of
pulse generator
· PCB is faulty
Problem of machine
Feedback signal of pulse generator
Is there any
relation?
· Check gear between spindle
and spindle motor
· Observe frequency of vibration
per motor rotation and check
the mechanical element that has
the frequency
· Check incorrect signal
of pulse generator
· Failure of machine
· PCB is faulty
· Check parameters F–21,
22, 25, and 26
10.8
ABNORMAL SOUND
AND VIBRATION
DURING ROTATION