1 Troubleshooting
1.3 Checking method and
remedy of trouble
classification
B
(b)
In case of un-synchronous tapping:
[tern
cause
Check
Remedy
The speed of the spindle
0
Change the parameter value
@
When the signal waveform
motor deviates for 10
of the amplifier for the
in the open loop state
rpm or more. open loop state, input the
deviates:
speed reference and start
replace the printed
cir-
command,
rotate the motor
cuit
board SF-CA card
at a low speed, and check
with a new one.
the signal of the motor
built-in encoder (in the
@
When the signal waveform
in the open loop state
1
same manner as the check
method of the Item 6 of the
does not deviate, in
ac-
alarm
No.23(OSE)).
cordance with the Items 6,
7, and 8 of the alarm
No.23
(OSE),
(i)
adjust
the variable resistor in
the motor built-in encoder
and (ii) replace the
printed circuit board or
sensor with a new one.
The up to speed signal
o
Check the external signal in
o
Take proper countermeasures
2
or zero speed signal is the status display diagnosis
by referencing Section
not issued.
mode by referencing Section
1.3.11.
1.3.11.
The orientation encoder
o
In the same manner as the
o
Replace the encoder with the
of the spindle is
defec-
Item 1 of the alarm No.21
new one.
tive.
OJS2),
check the signal wave-
form.
3
o
Replace the encoder with a
new one and check that the
equipment correctly works.
(See Appendix 7.)
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