1 Troubleshooting
1.3
Checking method and
remedy of trouble
classification
0
Item
Cause
Check Remedy
o
Check the signal waveform at
the check pins on the printed
circuit board SF-CA card
using an oscilloscope.
Phase A signal:
CH44-CH9
(or AGA)
Phase B signal:
CH45-CH9
(or AGA)
(See Appendixes
6(l)
and
9(l).)
(Note) Before using the check
pins,
the power of the
amplifier should have been
turned off.
The printed circuit
0
Check that the motor rotates
0
Replace the printed circuit
board in the motor
at several ten rpm and the
board in the motor terminal
built-in encoder speed display indicates
"0".
box and adjust the controls
(motor terminal box) is
by referencing Section 2.9.
defective.
o
Like the same manner as the
Item 6 above, in the open
loop state, rotate the motor
at a low speed.
0
Like the same manner as the
Item 6,
check the signal
waveform of the check pins on
the SF-CA card using an
oscilloscope.
7
0
By referencing the descrip-
tion relating to adjustment
and replacement of the motor
built-in encoder described
in Section 2.9, observe the
waveforms between PA and PGA
and between PB and PGA using
an oscilloscope and check
that they can be in the
standard value range using
volume resistors
(VRl,
VR2,
VR3 and
VR4).
The sensor in the motor
o
Check that the output
wave-
o
Replace the entire motor
built-in encoder is forms between PA and PGA and
with a new one.
defective.
between PB and PGA on the
encoder printed circuit board
o
If the motor cannot be
cannot be adjusted in the
replaced, replace it
a
standard value range even
together with the sensor
after the printed circuit
and printed circuit board
board has been replaced in
by referencing Section
the manner described in the
2.9.
Item 7 above.
(9)
Alarm
No.24tBRT)
Breaker Trip
(10)
Alarm
No_25(COC)
Converter Overcurrent
-
29
-
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