
9. TROUBLESHOOTING (SERIAL INTERFACE SPINDLE)
B–62835EN/01
342
Item Cause of trouble Check procedure Remedy
1
Incorrect parameter
setting
Check if specified param-
eter value is beyond al-
lowable range of values.
Specify value within allow-
able range.
and are alternately displayed in the spindle amplifier
indicator section if an AL–34 alarm is raised.
“XXX” indicates the data number internal to the spindle for a parameter
where a value beyond the allowable range is specified.
AL–34
F–XXX
Item Cause of trouble Check procedure Remedy
1
Parameter data of
gear ratio and posi-
tion gain are too
large.
Check gear ratio and
position gain data.
Change to suitable values.
Item Cause of trouble Check procedure Remedy
1
Incorrect setting of
parameter for number
of speed feedback
pulses (No. 6511)
Check if number of speed
feedback pulses matches
parameter setting.
Set correct value in
parameter.
Item Cause of trouble Check procedure Remedy
1
Incorrect setting of
parameter for number
of position coder sig-
nal pulses (No.
4003#4,6,7).
Check number of position
coder signal pulses and
parameter setting.
Set correct value in param-
eter.
2
Incorrect amplitude
and offset of position
coder feedback sig-
nal, or noise on same
feedback signal.
Check feedback signal
level and also check if
feedback signal waveform
includes noise.
Adjust feedback signal.
Check shielding status.
Item Cause of trouble Check procedure Remedy
1
Incorrect setting of
parameter for number
of position coder sig-
nal pulses
(No. 4003#4,6,7).
Check number of position
coder signal pulses and
parameter setting.
Set correct value in param-
eter.
2
Incorrect amplitude
and offset of position
coder feedback sig-
nal, or noise on same
feedback signal.
Check feedback signal
level and also check if
feedback signal waveform
includes noise.
Adjust feedback signal.
Check shielding status.
AL–34 Parameter data
setting beyond
allowable range
of values
AL–35 Excessive gear
ratio data setting
AL–37 Speed detector
parameter setting
error
AL–41 Alarm for
indicating failure
in detecting
position coder
1–rotation signal
AL–47 Position coder
signal
abnormality