1 Troubleshooting
1.3 Checking method and
remedy of trouble
classification
B
(12) Alarm
No.26(PL)
Power Phase Lack
[When R and T of phases R, S, and T are
normal,
whether there is phase S is
checked.]
Item
Cause
Check
Remedy
One of phases R, S, and
D
Check the voltage between any
o
Check the cause of the phase
T is lacked when the
two phases of R, S, and T at
lack and take proper
1
power is turned on.
the input power terminals
Sl,
countermeasures.
X2,
and X3 using a circuit
tester.
One of the fuses
Fl,
F2,
o
Check the electric continuity
0
Replace the fuse being blown
2
and F3 has been blown
of each fuse using the
cir-
with a new one.
when the power is turned
cuit
tester.
(See Section 2.1.)
on.
(13) Alarm
No.27(CPUE)
CPU Error (Division error)
[This alarm occurs when an CPU operation where
a value is divided by 0 is executed or the
result of division is overflowed.)
Item
Cause
Check
Remedy
The parameter relating
D
Check the parameter by
refer-
o
Correctly set the parameter.
to gear ratio is
in-
encing
Reference 1.2.2 for
correctly set.
that which is set from the
(Note) Compare the parameter
1
amplifier and Reference 1.2.3
in the parameter list on
for that which is set from
the cover of the amplifier
the NC.
with that being set.
(See Appendix 10)
The connector
(CNlA)
o
Check the cable in the same
o
Securely connect the
connec-
2
which is linked with the
manner as the alarm No. 15
tor and the set screws.
NC through the bus is
(k=2).
loose.
The cable
(CAMll)
which
D
Check the cable in the same
o
Replace the cable with a new
3
is linked with the NC
manner as the alarm No. 15
one.
through the bus is
(-2).
defective.
The following parameters
o
Check the parameters by
o
Correctly set the parameters.
relating to the gain of
referencing Reference 1.2.3.
the speed loop are
in-
(Note) Compare the parameters
4
correct.
VKP,VKI,ORSl.
in the parameter list on
the amplifier cover with
those being set.
(See Appendix 10.)
When a special motor is
o
Compare the
parameters.in
D
Correctly set the parameters
used (when
X01
and 02
the parameter list on the
5
are set), the motor
amplifier cover with those
constants
181
to
XAF
are
being set.
incorrect.
(See Appendix 10.)
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32
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