17,-Alarms 3141 To 3148 (Prevention Of Uncontrolled Running); Alarms 3161 To 3168 (Absolute Errors)• 00 - YASKAWA YASNAC i80 Maintenance Manual

4.2 TROUBLESHOOTING BY ALARM
4.2.17 ALARMS 3141 TO 3148 (PREVENTION
UNCONTROLLED RUNNING)
These alarms detect uncontrolled running due to
erroneous wiring of the motor or encoder.
Table 4.19
Cause of Trouble
Failure of model
Erroneous wiring of
motor
Erroneous wiring of
encoder
New incremental
encoder pole sense
input signal (phase C)
malfunction (by noise)
4.2.18 ALARMS 3161 TO3168 (ABSOLUTE ERRORS)
Malfunction of absolute encoder is detected.
Cause of Trouble
Failure of model
JANCD-FC300B board
Erroneous wiring of
encoder
Malfunction of absolute
encoder
Malfunction of absolute Check whether the wiring of absolute
encoder
Backup-battery
defective or not con-
netted
Fault of absolute
encoder
98
Alarms 3141 to 3145 (Prevention of Uncontrolled Running)
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Check Method
Check whether the alarm is caused merely
by application of control power.
Check wiring according to YASNAC i80
Connecting Manual (T OE-C843-11 .5).
Check wiring according to YASNAC i80
Connecting Nfanual (TOE -C843-11.5).
Check whether alarm occurs often when
primary power supply is turned on.
Table 4.20 Alarms 3161 to 3165 (Absolute Errors)
Check Method
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Check whether the alarm is caused merely
by application of control power.
Check wiring according to YASNAC i80
Connecting Manual (TOE-C843-11 .5).
Check whether alarm lamp goes out after
power is turned off, then on again.
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encoder is correct and alarm occurs.
Check whether battery alarm occurs at the
same time.
Check whether alarm occurs although all of
the above check items are satisfied.
CODES
(Cent'd)
OF
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Solution
Replace model JANCD-
FC300B board.
If erroneous wiring is
found, correct the wiring.
If erroneous wiring is
found, correct the wiring.
Restart operation after
turning off the power
and then turning it on.
Provide some noise
prevention.
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Solution
Replace model JANCD-
FC300B board.
If ecconeous wiring is
found, correct the wiring.
Restart operation after
turning power off, then on
again.
encoder.
Connect or replace backup
battery.
Replace the motor.